Thomas Hamilton
SD Card Interface class. Log raw data bytes to memory addresses of your choice, or format the card and use the FAT file system to write files.
Revision 6:ddf09d859ed7, committed 2011-01-16
- Comitter:
- Blaze513
- Date:
- Sun Jan 16 09:20:30 2011 +0000
- Parent:
- 5:d85e20b6b904
- Commit message:
- gave access to Initialization function to FAT module.
added disk formatting functionality.
Changed in this revision
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/diskio.c
--- a/FATFileSystem/Core/diskio.c Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Core/diskio.c Sun Jan 16 09:20:30 2011 +0000
@@ -1,138 +1,138 @@
-/*-----------------------------------------------------------------------*/
-/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
-/*-----------------------------------------------------------------------*/
-/* This is a stub disk I/O module that acts as front end of the existing */
-/* disk I/O modules and attach it to FatFs module with common interface. */
-/*-----------------------------------------------------------------------*/
-
-//Modified by Thomas Hamilton, Copyright 2010
-
-#include "diskio.h"
-
-DSTATUS disk_initialize(BYTE drv)
-{
- if (FATFileSystem::DriveArray[drv])
- {
- return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_initialize();
- }
- else
- {
- return STA_NOINIT;
- }
-}
-
-DSTATUS disk_status(BYTE drv)
-{
- if (FATFileSystem::DriveArray[drv])
- {
- return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_status();
- }
- else
- {
- return STA_NOINIT;
- }
-}
-
-DRESULT disk_read(BYTE drv, BYTE* buff, DWORD sector, BYTE count)
-{
- if (FATFileSystem::DriveArray[drv])
- {
- return (DRESULT)FATFileSystem::DriveArray[drv]->disk_read((unsigned char*)buff,
- (unsigned long)sector, (unsigned char)count);
- }
- else
- {
- return RES_NOTRDY;
- }
-}
-
-#if _READONLY == 0
-DRESULT disk_write(BYTE drv, const BYTE* buff, DWORD sector, BYTE count)
-{
- if (FATFileSystem::DriveArray[drv])
- {
- return (DRESULT)FATFileSystem::DriveArray[drv]->disk_write((const unsigned char*)buff,
- (unsigned long)sector, (unsigned char)count);
- }
- else
- {
- return RES_NOTRDY;
- }
-}
-#endif
-
-DRESULT disk_ioctl(BYTE drv, BYTE ctrl, void* buff)
-{
- switch (ctrl)
- {
- case CTRL_SYNC:
- if (FATFileSystem::DriveArray[drv])
- {
- return (DRESULT)FATFileSystem::DriveArray[drv]->disk_sync();
- }
- else
- {
- return RES_NOTRDY;
- }
-
- case GET_SECTOR_SIZE:
- if (FATFileSystem::DriveArray[drv])
- {
- WORD Result = FATFileSystem::DriveArray[drv]->disk_sector_size();
- if (Result > 0)
- {
- *((WORD*)buff) = Result;
- return RES_OK;
- }
- else
- {
- return RES_ERROR;
- }
- }
- else
- {
- return RES_NOTRDY;
- }
-
- case GET_SECTOR_COUNT:
- if (FATFileSystem::DriveArray[drv])
- {
- DWORD Result = FATFileSystem::DriveArray[drv]->disk_sector_count();
- if (Result > 0)
- {
- *((DWORD*)buff) = Result;
- return RES_OK;
- }
- else
- {
- return RES_ERROR;
- }
- }
- else
- {
- return RES_NOTRDY;
- }
-
- case GET_BLOCK_SIZE:
- if (FATFileSystem::DriveArray[drv])
- {
- DWORD Result = FATFileSystem::DriveArray[drv]->disk_block_size();
- if (Result > 0)
- {
- *((DWORD*)buff) = Result;
- return RES_OK;
- }
- else
- {
- return RES_ERROR;
- }
- }
- else
- {
- return RES_NOTRDY;
- }
-
- default:
- return RES_PARERR;
- }
+/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
+/*-----------------------------------------------------------------------*/
+/* This is a stub disk I/O module that acts as front end of the existing */
+/* disk I/O modules and attach it to FatFs module with common interface. */
+/*-----------------------------------------------------------------------*/
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#include "diskio.h"
+
+DSTATUS disk_initialize(BYTE drv)
+{
+ if (FATFileSystem::DriveArray[drv])
+ {
+ return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_initialize();
+ }
+ else
+ {
+ return STA_NOINIT;
+ }
+}
+
+DSTATUS disk_status(BYTE drv)
+{
+ if (FATFileSystem::DriveArray[drv])
+ {
+ return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_status();
+ }
+ else
+ {
+ return STA_NOINIT;
+ }
+}
+
+DRESULT disk_read(BYTE drv, BYTE* buff, DWORD sector, BYTE count)
+{
+ if (FATFileSystem::DriveArray[drv])
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_read((unsigned char*)buff,
+ (unsigned long)sector, (unsigned char)count);
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+}
+
+#if _READONLY == 0
+DRESULT disk_write(BYTE drv, const BYTE* buff, DWORD sector, BYTE count)
+{
+ if (FATFileSystem::DriveArray[drv])
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_write((const unsigned char*)buff,
+ (unsigned long)sector, (unsigned char)count);
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+}
+#endif
+
+DRESULT disk_ioctl(BYTE drv, BYTE ctrl, void* buff)
+{
+ switch (ctrl)
+ {
+ case CTRL_SYNC:
+ if (FATFileSystem::DriveArray[drv])
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_sync();
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_SECTOR_SIZE:
+ if (FATFileSystem::DriveArray[drv])
+ {
+ WORD Result = FATFileSystem::DriveArray[drv]->disk_sector_size();
+ if (Result > 0)
+ {
+ *((WORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_SECTOR_COUNT:
+ if (FATFileSystem::DriveArray[drv])
+ {
+ DWORD Result = FATFileSystem::DriveArray[drv]->disk_sector_count();
+ if (Result > 0)
+ {
+ *((DWORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_BLOCK_SIZE:
+ if (FATFileSystem::DriveArray[drv])
+ {
+ DWORD Result = FATFileSystem::DriveArray[drv]->disk_block_size();
+ if (Result > 0)
+ {
+ *((DWORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ default:
+ return RES_PARERR;
+ }
}
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/diskio.h
--- a/FATFileSystem/Core/diskio.h Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Core/diskio.h Sun Jan 16 09:20:30 2011 +0000
@@ -1,57 +1,57 @@
-/*-----------------------------------------------------------------------
-/ Low level disk interface module include file R0.06 (C)ChaN, 2007
-/-----------------------------------------------------------------------*/
-
-//Modified by Thomas Hamilton, Copyright 2010
-
-#ifndef _DISKIO
-#define _DISKIO
-
-#define _READONLY 0
-#define _USE_IOCTL 1
-
-#include "integer.h"
-#include "FATFileSystem.h"
-#include <stdio.h>
-
-/* Status of Disk Functions */
-typedef BYTE DSTATUS;
-#define STA_NOINIT 0x01 /* Drive not initialized */
-#define STA_NODISK 0x02 /* No medium in the drive */
-#define STA_PROTECT 0x04 /* Write protected */
-/* Results of Disk Functions */
-typedef enum
-{
- RES_OK = 0, /* 0: Successful */
- RES_ERROR, /* 1: R/W Error */
- RES_WRPRT, /* 2: Write Protected */
- RES_NOTRDY, /* 3: Not Ready */
- RES_PARERR /* 4: Invalid Parameter */
-} DRESULT;
-
-/* Prototypes for disk control functions */
-DSTATUS disk_initialize (BYTE);
-DSTATUS disk_status (BYTE);
-DRESULT disk_read (BYTE, BYTE*, DWORD, BYTE);
-#if _READONLY == 0
-DRESULT disk_write (BYTE, const BYTE*, DWORD, BYTE);
-#endif
-DRESULT disk_ioctl (BYTE, BYTE, void*);
-/* Command code for disk_ioctrl() */
-#define CTRL_SYNC 0 /* Mandatory for read/write configuration */
-#define GET_SECTOR_COUNT 1 /* Mandatory for only f_mkfs() */
-#define GET_SECTOR_SIZE 2
-#define GET_BLOCK_SIZE 3 /* Mandatory for only f_mkfs() */
-#define CTRL_POWER 4
-#define CTRL_LOCK 5
-#define CTRL_EJECT 6
-#define MMC_GET_TYPE 10 /* MMC/SDC command */
-#define MMC_GET_CSD 11
-#define MMC_GET_CID 12
-#define MMC_GET_OCR 13
-#define MMC_GET_SDSTAT 14
-#define ATA_GET_REV 20 /* ATA/CF command */
-#define ATA_GET_MODEL 21
-#define ATA_GET_SN 22
-
+/*-----------------------------------------------------------------------
+/ Low level disk interface module include file R0.06 (C)ChaN, 2007
+/-----------------------------------------------------------------------*/
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#ifndef _DISKIO
+#define _DISKIO
+
+#define _READONLY 0
+#define _USE_IOCTL 1
+
+#include "integer.h"
+#include "FATFileSystem.h"
+#include <stdio.h>
+
+/* Status of Disk Functions */
+typedef BYTE DSTATUS;
+#define STA_NOINIT 0x01 /* Drive not initialized */
+#define STA_NODISK 0x02 /* No medium in the drive */
+#define STA_PROTECT 0x04 /* Write protected */
+/* Results of Disk Functions */
+typedef enum
+{
+ RES_OK = 0, /* 0: Successful */
+ RES_ERROR, /* 1: R/W Error */
+ RES_WRPRT, /* 2: Write Protected */
+ RES_NOTRDY, /* 3: Not Ready */
+ RES_PARERR /* 4: Invalid Parameter */
+} DRESULT;
+
+/* Prototypes for disk control functions */
+DSTATUS disk_initialize (BYTE);
+DSTATUS disk_status (BYTE);
+DRESULT disk_read (BYTE, BYTE*, DWORD, BYTE);
+#if _READONLY == 0
+DRESULT disk_write (BYTE, const BYTE*, DWORD, BYTE);
+#endif
+DRESULT disk_ioctl (BYTE, BYTE, void*);
+/* Command code for disk_ioctrl() */
+#define CTRL_SYNC 0 /* Mandatory for read/write configuration */
+#define GET_SECTOR_COUNT 1 /* Mandatory for only f_mkfs() */
+#define GET_SECTOR_SIZE 2
+#define GET_BLOCK_SIZE 3 /* Mandatory for only f_mkfs() */
+#define CTRL_POWER 4
+#define CTRL_LOCK 5
+#define CTRL_EJECT 6
+#define MMC_GET_TYPE 10 /* MMC/SDC command */
+#define MMC_GET_CSD 11
+#define MMC_GET_CID 12
+#define MMC_GET_OCR 13
+#define MMC_GET_SDSTAT 14
+#define ATA_GET_REV 20 /* ATA/CF command */
+#define ATA_GET_MODEL 21
+#define ATA_GET_SN 22
+
#endif
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/ff.c
--- a/FATFileSystem/Core/ff.c Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Core/ff.c Sun Jan 16 09:20:30 2011 +0000
@@ -1,3555 +1,3555 @@
-/*----------------------------------------------------------------------------/
-/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
-/-----------------------------------------------------------------------------/
-/ FatFs module is a generic FAT file system module for small embedded systems.
-/ This is a free software that opened for education, research and commercial
-/ developments under license policy of following terms.
-/
-/ Copyright (C) 2010, ChaN, all right reserved.
-/
-/ * The FatFs module is a free software and there is NO WARRANTY.
-/ * No restriction on use. You can use, modify and redistribute it for
-/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
-/ * Redistributions of source code must retain the above copyright notice.
-/
-/-----------------------------------------------------------------------------/
-/ Feb 26,'06 R0.00 Prototype.
-/
-/ Apr 29,'06 R0.01 First stable version.
-/
-/ Jun 01,'06 R0.02 Added FAT12 support.
-/ Removed unbuffered mode.
-/ Fixed a problem on small (<32M) partition.
-/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
-/
-/ Sep 22,'06 R0.03 Added f_rename().
-/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
-/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
-/ Fixed f_mkdir() creates incorrect directory on FAT32.
-/
-/ Feb 04,'07 R0.04 Supported multiple drive system.
-/ Changed some interfaces for multiple drive system.
-/ Changed f_mountdrv() to f_mount().
-/ Added f_mkfs().
-/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
-/ Added a capability of extending file size to f_lseek().
-/ Added minimization level 3.
-/ Fixed an endian sensitive code in f_mkfs().
-/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
-/ Added FSInfo support.
-/ Fixed DBCS name can result FR_INVALID_NAME.
-/ Fixed short seek (<= csize) collapses the file object.
-/
-/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
-/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
-/ Fixed f_mkdir() on FAT32 creates incorrect directory.
-/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
-/ Fixed off by one error at FAT sub-type determination.
-/ Fixed btr in f_read() can be mistruncated.
-/ Fixed cached sector is not flushed when create and close
-/ without write.
-/
-/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
-/ Improved performance of f_lseek() on moving to the same
-/ or following cluster.
-/
-/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
-/ Added long file name support.
-/ Added multiple code page support.
-/ Added re-entrancy for multitask operation.
-/ Added auto cluster size selection to f_mkfs().
-/ Added rewind option to f_readdir().
-/ Changed result code of critical errors.
-/ Renamed string functions to avoid name collision.
-/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
-/ Added multiple sector size support.
-/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
-/ Fixed wrong cache control in f_lseek().
-/ Added relative path feature.
-/ Added f_chdir() and f_chdrive().
-/ Added proper case conversion to extended char.
-/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
-/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
-/ Fixed name matching error on the 13 char boundary.
-/ Added a configuration option, _LFN_UNICODE.
-/ Changed f_readdir() to return the SFN with always upper
-/ case on non-LFN cfg.
-/
-/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN)
-/ Added file lock feature. (_FS_SHARE)
-/ Added fast seek feature. (_USE_FASTSEEK)
-/ Changed some types on the API, XCHAR->TCHAR.
-/ Changed fname member in the FILINFO structure on Unicode cfg.
-/ String functions support UTF-8 encoding files on Unicode cfg.
-/---------------------------------------------------------------------------*/
-
-//Modified by Thomas Hamilton, Copyright 2010
-
-#include "ff.h" /* FatFs configurations and declarations */
-#include "diskio.h" /* Declarations of low level disk I/O functions */
-
-
-/*--------------------------------------------------------------------------
-
- Module Private Definitions
-
----------------------------------------------------------------------------*/
-
-#if _FATFS != 8085
-#error Wrong include file (ff.h).
-#endif
-
-
-/* FAT sub-type boundaries */
-/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
-#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
-#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
-
-
-/* Definitions corresponds to multiple sector size */
-#if _MAX_SS == 512 /* Single sector size */
-#define SS(fs) 512U
-#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
-#define SS(fs) ((fs)->ssize)
-#else
-#error Wrong sector size.
-#endif
-
-
-/* Reentrancy related */
-#if _FS_REENTRANT
-#if _USE_LFN == 1
-#error Static LFN work area must not be used in re-entrant configuration.
-#endif
-#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
-#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
-
-#else
-#define ENTER_FF(fs)
-#define LEAVE_FF(fs, res) return res
-
-#endif
-
-#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
-
-
-/* Character code support macros */
-#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
-#define IsLower(c) (((c)>='a')&&((c)<='z'))
-#define IsDigit(c) (((c)>='0')&&((c)<='9'))
-
-#if _DF1S /* Code page is DBCS */
-
-#ifdef _DF2S /* Two 1st byte areas */
-#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
-#else /* One 1st byte area */
-#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
-#endif
-
-#ifdef _DS3S /* Three 2nd byte areas */
-#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
-#else /* Two 2nd byte areas */
-#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
-#endif
-
-#else /* Code page is SBCS */
-
-#define IsDBCS1(c) 0
-#define IsDBCS2(c) 0
-
-#endif /* _DF1S */
-
-
-/* Name status flags */
-#define NS 11 /* Offset of name status byte */
-#define NS_LOSS 0x01 /* Out of 8.3 format */
-#define NS_LFN 0x02 /* Force to create LFN entry */
-#define NS_LAST 0x04 /* Last segment */
-#define NS_BODY 0x08 /* Lower case flag (body) */
-#define NS_EXT 0x10 /* Lower case flag (ext) */
-#define NS_DOT 0x20 /* Dot entry */
-
-
-
-/*------------------------------------------------------------*/
-/* Work area */
-
-#if !_DRIVES
-#error Number of drives must not be 0.
-#endif
-static
-WORD Fsid; /* File system mount ID */
-static
-FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
-
-#if _FS_RPATH
-static
-BYTE Drive; /* Current drive */
-#endif
-
-
-#if _USE_LFN == 0 /* No LFN */
-#define DEF_NAMEBUF BYTE sfn[12]
-#define INIT_BUF(dobj) (dobj).fn = sfn
-#define FREE_BUF()
-
-#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
-static WCHAR LfnBuf[_MAX_LFN + 1];
-#define DEF_NAMEBUF BYTE sfn[12]
-#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
-#define FREE_BUF()
-
-#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
-#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
-#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
-#define FREE_BUF()
-
-#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
-#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
-#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
- if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
- (dobj).lfn = lfn; (dobj).fn = sfn; }
-#define FREE_BUF() ff_memfree(lfn)
-
-#else
-#error Wrong LFN configuration.
-#endif
-
-
-
-
-/*--------------------------------------------------------------------------
-
- Module Private Functions
-
----------------------------------------------------------------------------*/
-
-
-/*-----------------------------------------------------------------------*/
-/* String functions */
-/*-----------------------------------------------------------------------*/
-
-/* Copy memory to memory */
-static
-void mem_cpy (void* dst, const void* src, int cnt) {
- BYTE *d = (BYTE*)dst;
- const BYTE *s = (const BYTE*)src;
-
-#if _WORD_ACCESS == 1
- while (cnt >= sizeof(int)) {
- *(int*)d = *(int*)s;
- d += sizeof(int); s += sizeof(int);
- cnt -= sizeof(int);
- }
-#endif
- while (cnt--)
- *d++ = *s++;
-}
-
-/* Fill memory */
-static
-void mem_set (void* dst, int val, int cnt) {
- BYTE *d = (BYTE*)dst;
-
- while (cnt--)
- *d++ = (BYTE)val;
-}
-
-/* Compare memory to memory */
-static
-int mem_cmp (const void* dst, const void* src, int cnt) {
- const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
- int r = 0;
-
- while (cnt-- && (r = *d++ - *s++) == 0) ;
- return r;
-}
-
-/* Check if chr is contained in the string */
-static
-int chk_chr (const char* str, int chr) {
- while (*str && *str != chr) str++;
- return *str;
-}
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Request/Release grant to access the volume */
-/*-----------------------------------------------------------------------*/
-#if _FS_REENTRANT
-
-static
-int lock_fs (
- FATFS *fs /* File system object */
-)
-{
- return ff_req_grant(fs->sobj);
-}
-
-
-static
-void unlock_fs (
- FATFS *fs, /* File system object */
- FRESULT res /* Result code to be returned */
-)
-{
- if (res != FR_NOT_ENABLED &&
- res != FR_INVALID_DRIVE &&
- res != FR_INVALID_OBJECT &&
- res != FR_TIMEOUT) {
- ff_rel_grant(fs->sobj);
- }
-}
-#endif
-
-
-
-/*-----------------------------------------------------------------------*/
-/* File shareing control functions */
-/*-----------------------------------------------------------------------*/
-#if _FS_SHARE
-
-static
-FRESULT chk_lock ( /* Check if the file can be accessed */
- FAT_DIR* dj, /* Directory object pointing the file to be checked */
- int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
-)
-{
- UINT i, be;
-
- /* Search file semaphore table */
- for (i = be = 0; i < _FS_SHARE; i++) {
- if (dj->fs->flsem[i].ctr) { /* Existing entry */
- if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
- dj->fs->flsem[i].idx == dj->index) break;
- } else { /* Blank entry */
- be++;
- }
- }
- if (i == _FS_SHARE) /* The file has not been opened */
- return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
-
- /* The file has been opened. Reject any open against writing file and all write mode open */
- return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
-}
-
-
-static
-int enq_lock ( /* Check if an entry is available for a new file */
- FATFS* fs /* File system object */
-)
-{
- UINT i;
-
- for (i = 0; i < _FS_SHARE && fs->flsem[i].ctr; i++) ;
- return (i == _FS_SHARE) ? 0 : 1;
-}
-
-
-static
-UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
- FAT_DIR* dj, /* Directory object pointing the file to register or increment */
- int acc /* Desired access mode (0:Read, !0:Write) */
-)
-{
- UINT i;
-
-
- for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
- if (dj->fs->flsem[i].ctr &&
- dj->fs->flsem[i].clu == dj->sclust &&
- dj->fs->flsem[i].idx == dj->index) break;
- }
-
- if (i == _FS_SHARE) { /* Not opened. Register it as new. */
- for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
- if (i == _FS_SHARE) return 0; /* No space to register (int err) */
- dj->fs->flsem[i].clu = dj->sclust;
- dj->fs->flsem[i].idx = dj->index;
- }
-
- if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
-
- dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
-
- return i + 1;
-}
-
-
-static
-FRESULT dec_lock ( /* Decrement file open counter */
- FATFS* fs, /* File system object */
- UINT i /* Semaphore index */
-)
-{
- WORD n;
- FRESULT res;
-
-
- if (--i < _FS_SHARE) {
- n = fs->flsem[i].ctr;
- if (n >= 0x100) n = 0;
- if (n) n--;
- fs->flsem[i].ctr = n;
- res = FR_OK;
- } else {
- res = FR_INT_ERR;
- }
- return res;
-}
-
-#endif
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Change window offset */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT move_window (
- FATFS *fs, /* File system object */
- DWORD sector /* Sector number to make appearance in the fs->win[] */
-) /* Move to zero only writes back dirty window */
-{
- DWORD wsect;
-
-
- wsect = fs->winsect;
- if (wsect != sector) { /* Changed current window */
-#if !_FS_READONLY
- if (fs->wflag) { /* Write back dirty window if needed */
- if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
- return FR_DISK_ERR;
- fs->wflag = 0;
- if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
- BYTE nf;
- for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
- wsect += fs->fsize;
- disk_write(fs->drv, fs->win, wsect, 1);
- }
- }
- }
-#endif
- if (sector) {
- if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
- return FR_DISK_ERR;
- fs->winsect = sector;
- }
- }
-
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Clean-up cached data */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-static
-FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
- FATFS *fs /* File system object */
-)
-{
- FRESULT res;
-
-
- res = move_window(fs, 0);
- if (res == FR_OK) {
- /* Update FSInfo sector if needed */
- if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
- fs->winsect = 0;
- mem_set(fs->win, 0, 512);
- ST_WORD(fs->win+BS_55AA, 0xAA55);
- ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
- ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
- ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
- ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
- disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
- fs->fsi_flag = 0;
- }
- /* Make sure that no pending write process in the physical drive */
- if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
- res = FR_DISK_ERR;
- }
-
- return res;
-}
-#endif
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT access - Read value of a FAT entry */
-/*-----------------------------------------------------------------------*/
-
-
-DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to get the link information */
-)
-{
- UINT wc, bc;
- BYTE *p;
-
-
- if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
- return 1;
-
- switch (fs->fs_type) {
- case FS_FAT12 :
- bc = (UINT)clst; bc += bc / 2;
- if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
- wc = fs->win[bc % SS(fs)]; bc++;
- if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
- wc |= fs->win[bc % SS(fs)] << 8;
- return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
-
- case FS_FAT16 :
- if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
- p = &fs->win[clst * 2 % SS(fs)];
- return LD_WORD(p);
-
- case FS_FAT32 :
- if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
- p = &fs->win[clst * 4 % SS(fs)];
- return LD_DWORD(p) & 0x0FFFFFFF;
- }
-
- return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT access - Change value of a FAT entry */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-
-FRESULT put_fat (
- FATFS *fs, /* File system object */
- DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
- DWORD val /* New value to mark the cluster */
-)
-{
- UINT bc;
- BYTE *p;
- FRESULT res;
-
-
- if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
- res = FR_INT_ERR;
-
- } else {
- switch (fs->fs_type) {
- case FS_FAT12 :
- bc = clst; bc += bc / 2;
- res = move_window(fs, fs->fatbase + (bc / SS(fs)));
- if (res != FR_OK) break;
- p = &fs->win[bc % SS(fs)];
- *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
- bc++;
- fs->wflag = 1;
- res = move_window(fs, fs->fatbase + (bc / SS(fs)));
- if (res != FR_OK) break;
- p = &fs->win[bc % SS(fs)];
- *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
- break;
-
- case FS_FAT16 :
- res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
- if (res != FR_OK) break;
- p = &fs->win[clst * 2 % SS(fs)];
- ST_WORD(p, (WORD)val);
- break;
-
- case FS_FAT32 :
- res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
- if (res != FR_OK) break;
- p = &fs->win[clst * 4 % SS(fs)];
- val |= LD_DWORD(p) & 0xF0000000;
- ST_DWORD(p, val);
- break;
-
- default :
- res = FR_INT_ERR;
- }
- fs->wflag = 1;
- }
-
- return res;
-}
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT handling - Remove a cluster chain */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-static
-FRESULT remove_chain (
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to remove a chain from */
-)
-{
- FRESULT res;
- DWORD nxt;
-
-
- if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
- res = FR_INT_ERR;
-
- } else {
- res = FR_OK;
- while (clst < fs->n_fatent) { /* Not a last link? */
- nxt = get_fat(fs, clst); /* Get cluster status */
- if (nxt == 0) break; /* Empty cluster? */
- if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
- if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
- res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
- if (res != FR_OK) break;
- if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
- fs->free_clust++;
- fs->fsi_flag = 1;
- }
- clst = nxt; /* Next cluster */
- }
- }
-
- return res;
-}
-#endif
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* FAT handling - Stretch or Create a cluster chain */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-static
-DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
-)
-{
- DWORD cs, ncl, scl;
-
-
- if (clst == 0) { /* Create a new chain */
- scl = fs->last_clust; /* Get suggested start point */
- if (!scl || scl >= fs->n_fatent) scl = 1;
- }
- else { /* Stretch the current chain */
- cs = get_fat(fs, clst); /* Check the cluster status */
- if (cs < 2) return 1; /* It is an invalid cluster */
- if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
- scl = clst;
- }
-
- ncl = scl; /* Start cluster */
- for (;;) {
- ncl++; /* Next cluster */
- if (ncl >= fs->n_fatent) { /* Wrap around */
- ncl = 2;
- if (ncl > scl) return 0; /* No free cluster */
- }
- cs = get_fat(fs, ncl); /* Get the cluster status */
- if (cs == 0) break; /* Found a free cluster */
- if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
- return cs;
- if (ncl == scl) return 0; /* No free cluster */
- }
-
- if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
- return 0xFFFFFFFF;
- if (clst != 0) { /* Link it to the previous one if needed */
- if (put_fat(fs, clst, ncl))
- return 0xFFFFFFFF;
- }
-
- fs->last_clust = ncl; /* Update FSINFO */
- if (fs->free_clust != 0xFFFFFFFF) {
- fs->free_clust--;
- fs->fsi_flag = 1;
- }
-
- return ncl; /* Return new cluster number */
-}
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Get sector# from cluster# */
-/*-----------------------------------------------------------------------*/
-
-
-DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
- FATFS *fs, /* File system object */
- DWORD clst /* Cluster# to be converted */
-)
-{
- clst -= 2;
- if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
- return clst * fs->csize + fs->database;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Directory handling - Set directory index */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_sdi (
- FAT_DIR *dj, /* Pointer to directory object */
- WORD idx /* Directory index number */
-)
-{
- DWORD clst;
- WORD ic;
-
-
- dj->index = idx;
- clst = dj->sclust;
- if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
- return FR_INT_ERR;
- if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
- clst = dj->fs->dirbase;
-
- if (clst == 0) { /* Static table */
- dj->clust = clst;
- if (idx >= dj->fs->n_rootdir) /* Index is out of range */
- return FR_INT_ERR;
- dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
- }
- else { /* Dynamic table */
- ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
- while (idx >= ic) { /* Follow cluster chain */
- clst = get_fat(dj->fs, clst); /* Get next cluster */
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
- if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
- return FR_INT_ERR;
- idx -= ic;
- }
- dj->clust = clst;
- dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
- }
-
- dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
-
- return FR_OK; /* Seek succeeded */
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Directory handling - Move directory index next */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
- FAT_DIR *dj, /* Pointer to directory object */
- int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
-)
-{
- DWORD clst;
- WORD i;
-
-
- i = dj->index + 1;
- if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
- return FR_NO_FILE;
-
- if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
- dj->sect++; /* Next sector */
-
- if (dj->clust == 0) { /* Static table */
- if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
- return FR_NO_FILE;
- }
- else { /* Dynamic table */
- if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
- clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
- if (clst <= 1) return FR_INT_ERR;
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
- if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
-#if !_FS_READONLY
- BYTE c;
- if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
- clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
- if (clst == 0) return FR_DENIED; /* No free cluster */
- if (clst == 1) return FR_INT_ERR;
- if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
- /* Clean-up stretched table */
- if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
- mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
- dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
- for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
- dj->fs->wflag = 1;
- if (move_window(dj->fs, 0)) return FR_DISK_ERR;
- dj->fs->winsect++;
- }
- dj->fs->winsect -= c; /* Rewind window address */
-#else
- return FR_NO_FILE; /* Report EOT */
-#endif
- }
- dj->clust = clst; /* Initialize data for new cluster */
- dj->sect = clust2sect(dj->fs, clst);
- }
- }
- }
-
- dj->index = i;
- dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
-
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
-/*-----------------------------------------------------------------------*/
-#if _USE_LFN
-static
-const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
-
-
-static
-int cmp_lfn ( /* 1:Matched, 0:Not matched */
- WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
- BYTE *dir /* Pointer to the directory entry containing a part of LFN */
-)
-{
- int i, s;
- WCHAR wc, uc;
-
-
- i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
- s = 0; wc = 1;
- do {
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
- if (wc) { /* Last char has not been processed */
- wc = ff_wtoupper(uc); /* Convert it to upper case */
- if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
- return 0; /* Not matched */
- } else {
- if (uc != 0xFFFF) return 0; /* Check filler */
- }
- } while (++s < 13); /* Repeat until all chars in the entry are checked */
-
- if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
- return 0;
-
- return 1; /* The part of LFN matched */
-}
-
-
-
-static
-int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
- WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
- BYTE *dir /* Pointer to the directory entry */
-)
-{
- int i, s;
- WCHAR wc, uc;
-
-
- i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
-
- s = 0; wc = 1;
- do {
- uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
- if (wc) { /* Last char has not been processed */
- if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
- lfnbuf[i++] = wc = uc; /* Store it */
- } else {
- if (uc != 0xFFFF) return 0; /* Check filler */
- }
- } while (++s < 13); /* Read all character in the entry */
-
- if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
- if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
- lfnbuf[i] = 0;
- }
-
- return 1;
-}
-
-
-#if !_FS_READONLY
-static
-void fit_lfn (
- const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
- BYTE *dir, /* Pointer to the directory entry */
- BYTE ord, /* LFN order (1-20) */
- BYTE sum /* SFN sum */
-)
-{
- int i, s;
- WCHAR wc;
-
-
- dir[LDIR_Chksum] = sum; /* Set check sum */
- dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
- dir[LDIR_Type] = 0;
- ST_WORD(dir+LDIR_FstClusLO, 0);
-
- i = (ord - 1) * 13; /* Get offset in the LFN buffer */
- s = wc = 0;
- do {
- if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
- ST_WORD(dir+LfnOfs[s], wc); /* Put it */
- if (!wc) wc = 0xFFFF; /* Padding chars following last char */
- } while (++s < 13);
- if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
- dir[LDIR_Ord] = ord; /* Set the LFN order */
-}
-
-#endif
-#endif
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Create numbered name */
-/*-----------------------------------------------------------------------*/
-#if _USE_LFN
-void gen_numname (
- BYTE *dst, /* Pointer to generated SFN */
- const BYTE *src, /* Pointer to source SFN to be modified */
- const WCHAR *lfn, /* Pointer to LFN */
- WORD seq /* Sequence number */
-)
-{
- BYTE ns[8], c;
- int i, j;
-
-
- mem_cpy(dst, src, 11);
-
- if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
- do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
- }
-
- /* itoa */
- i = 7;
- do {
- c = (seq % 16) + '0';
- if (c > '9') c += 7;
- ns[i--] = c;
- seq /= 16;
- } while (seq);
- ns[i] = '~';
-
- /* Append the number */
- for (j = 0; j < i && dst[j] != ' '; j++) {
- if (IsDBCS1(dst[j])) {
- if (j == i - 1) break;
- j++;
- }
- }
- do {
- dst[j++] = (i < 8) ? ns[i++] : ' ';
- } while (j < 8);
-}
-#endif
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Calculate sum of an SFN */
-/*-----------------------------------------------------------------------*/
-#if _USE_LFN
-static
-BYTE sum_sfn (
- const BYTE *dir /* Ptr to directory entry */
-)
-{
- BYTE sum = 0;
- int n = 11;
-
- do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
- return sum;
-}
-#endif
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Directory handling - Find an object in the directory */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT dir_find (
- FAT_DIR *dj /* Pointer to the directory object linked to the file name */
-)
-{
- FRESULT res;
- BYTE c, *dir;
-#if _USE_LFN
- BYTE a, ord, sum;
-#endif
-
- res = dir_sdi(dj, 0); /* Rewind directory object */
- if (res != FR_OK) return res;
-
-#if _USE_LFN
- ord = sum = 0xFF;
-#endif
- do {
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- dir = dj->dir; /* Ptr to the directory entry of current index */
- c = dir[DIR_Name];
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
-#if _USE_LFN /* LFN configuration */
- a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
- ord = 0xFF;
- } else {
- if (a == AM_LFN) { /* An LFN entry is found */
- if (dj->lfn) {
- if (c & 0x40) { /* Is it start of LFN sequence? */
- sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c; /* LFN start order */
- dj->lfn_idx = dj->index;
- }
- /* Check validity of the LFN entry and compare it with given name */
- ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
- }
- } else { /* An SFN entry is found */
- if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
- ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
- if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
- }
- }
-#else /* Non LFN configuration */
- if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
- break;
-#endif
- res = dir_next(dj, 0); /* Next entry */
- } while (res == FR_OK);
-
- return res;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Read an object from the directory */
-/*-----------------------------------------------------------------------*/
-#if _FS_MINIMIZE <= 1
-static
-FRESULT dir_read (
- FAT_DIR *dj /* Pointer to the directory object that pointing the entry to be read */
-)
-{
- FRESULT res;
- BYTE c, *dir;
-#if _USE_LFN
- BYTE a, ord = 0xFF, sum = 0xFF;
-#endif
-
- res = FR_NO_FILE;
- while (dj->sect) {
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- dir = dj->dir; /* Ptr to the directory entry of current index */
- c = dir[DIR_Name];
- if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
-#if _USE_LFN /* LFN configuration */
- a = dir[DIR_Attr] & AM_MASK;
- if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
- ord = 0xFF;
- } else {
- if (a == AM_LFN) { /* An LFN entry is found */
- if (c & 0x40) { /* Is it start of LFN sequence? */
- sum = dir[LDIR_Chksum];
- c &= 0xBF; ord = c;
- dj->lfn_idx = dj->index;
- }
- /* Check LFN validity and capture it */
- ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
- } else { /* An SFN entry is found */
- if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
- dj->lfn_idx = 0xFFFF; /* It has no LFN. */
- break;
- }
- }
-#else /* Non LFN configuration */
- if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
- break;
-#endif
- res = dir_next(dj, 0); /* Next entry */
- if (res != FR_OK) break;
- }
-
- if (res != FR_OK) dj->sect = 0;
-
- return res;
-}
-#endif
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Register an object to the directory */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY
-static
-FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
- FAT_DIR *dj /* Target directory with object name to be created */
-)
-{
- FRESULT res;
- BYTE c, *dir;
-#if _USE_LFN /* LFN configuration */
- WORD n, ne, is;
- BYTE sn[12], *fn, sum;
- WCHAR *lfn;
-
-
- fn = dj->fn; lfn = dj->lfn;
- mem_cpy(sn, fn, 12);
-
- if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
-
- if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
- fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
- for (n = 1; n < 100; n++) {
- gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
- res = dir_find(dj); /* Check if the name collides with existing SFN */
- if (res != FR_OK) break;
- }
- if (n == 100) return FR_DENIED; /* Abort if too many collisions */
- if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
- fn[NS] = sn[NS]; dj->lfn = lfn;
- }
-
- if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
- for (ne = 0; lfn[ne]; ne++) ;
- ne = (ne + 25) / 13;
- } else { /* Otherwise reserve only an SFN entry. */
- ne = 1;
- }
-
- /* Reserve contiguous entries */
- res = dir_sdi(dj, 0);
- if (res != FR_OK) return res;
- n = is = 0;
- do {
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- c = *dj->dir; /* Check the entry status */
- if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
- if (n == 0) is = dj->index; /* First index of the contiguous entry */
- if (++n == ne) break; /* A contiguous entry that required count is found */
- } else {
- n = 0; /* Not a blank entry. Restart to search */
- }
- res = dir_next(dj, 1); /* Next entry with table stretch */
- } while (res == FR_OK);
-
- if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
- res = dir_sdi(dj, is);
- if (res == FR_OK) {
- sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
- ne--;
- do { /* Store LFN entries in bottom first */
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
- dj->fs->wflag = 1;
- res = dir_next(dj, 0); /* Next entry */
- } while (res == FR_OK && --ne);
- }
- }
-
-#else /* Non LFN configuration */
- res = dir_sdi(dj, 0);
- if (res == FR_OK) {
- do { /* Find a blank entry for the SFN */
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- c = *dj->dir;
- if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
- res = dir_next(dj, 1); /* Next entry with table stretch */
- } while (res == FR_OK);
- }
-#endif
-
- if (res == FR_OK) { /* Initialize the SFN entry */
- res = move_window(dj->fs, dj->sect);
- if (res == FR_OK) {
- dir = dj->dir;
- mem_set(dir, 0, 32); /* Clean the entry */
- mem_cpy(dir, dj->fn, 11); /* Put SFN */
-#if _USE_LFN
- dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
-#endif
- dj->fs->wflag = 1;
- }
- }
-
- return res;
-}
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Remove an object from the directory */
-/*-----------------------------------------------------------------------*/
-#if !_FS_READONLY && !_FS_MINIMIZE
-static
-FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
- FAT_DIR *dj /* Directory object pointing the entry to be removed */
-)
-{
- FRESULT res;
-#if _USE_LFN /* LFN configuration */
- WORD i;
-
- i = dj->index; /* SFN index */
- res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
- if (res == FR_OK) {
- do {
- res = move_window(dj->fs, dj->sect);
- if (res != FR_OK) break;
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
- dj->fs->wflag = 1;
- if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
- res = dir_next(dj, 0); /* Next entry */
- } while (res == FR_OK);
- if (res == FR_NO_FILE) res = FR_INT_ERR;
- }
-
-#else /* Non LFN configuration */
- res = dir_sdi(dj, dj->index);
- if (res == FR_OK) {
- res = move_window(dj->fs, dj->sect);
- if (res == FR_OK) {
- *dj->dir = 0xE5; /* Mark the entry "deleted" */
- dj->fs->wflag = 1;
- }
- }
-#endif
-
- return res;
-}
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Pick a segment and create the object name in directory form */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT create_name (
- FAT_DIR *dj, /* Pointer to the directory object */
- const TCHAR **path /* Pointer to pointer to the segment in the path string */
-)
-{
-#ifdef _EXCVT
- static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
-#endif
-
-#if _USE_LFN /* LFN configuration */
- BYTE b, cf;
- WCHAR w, *lfn;
- int i, ni, si, di;
- const TCHAR *p;
-
- /* Create LFN in Unicode */
- si = di = 0;
- p = *path;
- lfn = dj->lfn;
- for (;;) {
- w = p[si++]; /* Get a character */
- if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
- if (di >= _MAX_LFN) /* Reject too long name */
- return FR_INVALID_NAME;
-#if !_LFN_UNICODE
- w &= 0xFF;
- if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
- b = p[si++]; /* Get 2nd byte */
- if (!IsDBCS2(b)) /* Reject invalid code for DBC */
- return FR_INVALID_NAME;
- w = (w << 8) + b;
- }
- w = ff_convert(w, 1); /* Convert OEM to Unicode */
- if (!w) return FR_INVALID_NAME; /* Reject invalid code */
-#endif
- if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
- return FR_INVALID_NAME;
- lfn[di++] = w; /* Store the Unicode char */
- }
- *path = &p[si]; /* Return pointer to the next segment */
- cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
-#if _FS_RPATH
- if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
- (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
- lfn[di] = 0;
- for (i = 0; i < 11; i++)
- dj->fn[i] = (i < di) ? '.' : ' ';
- dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
- return FR_OK;
- }
-#endif
- while (di) { /* Strip trailing spaces and dots */
- w = lfn[di - 1];
- if (w != ' ' && w != '.') break;
- di--;
- }
- if (!di) return FR_INVALID_NAME; /* Reject nul string */
-
- lfn[di] = 0; /* LFN is created */
-
- /* Create SFN in directory form */
- mem_set(dj->fn, ' ', 11);
- for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
- if (si) cf |= NS_LOSS | NS_LFN;
- while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
-
- b = i = 0; ni = 8;
- for (;;) {
- w = lfn[si++]; /* Get an LFN char */
- if (!w) break; /* Break on end of the LFN */
- if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
- cf |= NS_LOSS | NS_LFN; continue;
- }
-
- if (i >= ni || si == di) { /* Extension or end of SFN */
- if (ni == 11) { /* Long extension */
- cf |= NS_LOSS | NS_LFN; break;
- }
- if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
- if (si > di) break; /* No extension */
- si = di; i = 8; ni = 11; /* Enter extension section */
- b <<= 2; continue;
- }
-
- if (w >= 0x80) { /* Non ASCII char */
-#ifdef _EXCVT
- w = ff_convert(w, 0); /* Unicode -> OEM code */
- if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
-#else
- w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
-#endif
- cf |= NS_LFN; /* Force create LFN entry */
- }
-
- if (_DF1S && w >= 0x100) { /* Double byte char */
- if (i >= ni - 1) {
- cf |= NS_LOSS | NS_LFN; i = ni; continue;
- }
- dj->fn[i++] = (BYTE)(w >> 8);
- } else { /* Single byte char */
- if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
- w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
- } else {
- if (IsUpper(w)) { /* ASCII large capital */
- b |= 2;
- } else {
- if (IsLower(w)) { /* ASCII small capital */
- b |= 1; w -= 0x20;
- }
- }
- }
- }
- dj->fn[i++] = (BYTE)w;
- }
-
- if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
-
- if (ni == 8) b <<= 2;
- if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
- cf |= NS_LFN;
- if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
- if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
- if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
- }
-
- dj->fn[NS] = cf; /* SFN is created */
-
- return FR_OK;
-
-
-#else /* Non-LFN configuration */
- BYTE b, c, d, *sfn;
- int ni, si, i;
- const char *p;
-
- /* Create file name in directory form */
- sfn = dj->fn;
- mem_set(sfn, ' ', 11);
- si = i = b = 0; ni = 8;
- p = *path;
-#if _FS_RPATH
- if (p[si] == '.') { /* Is this a dot entry? */
- for (;;) {
- c = (BYTE)p[si++];
- if (c != '.' || si >= 3) break;
- sfn[i++] = c;
- }
- if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
- *path = &p[si]; /* Return pointer to the next segment */
- sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
- return FR_OK;
- }
-#endif
- for (;;) {
- c = (BYTE)p[si++];
- if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
- if (c == '.' || i >= ni) {
- if (ni != 8 || c != '.') return FR_INVALID_NAME;
- i = 8; ni = 11;
- b <<= 2; continue;
- }
- if (c >= 0x80) { /* Extended char */
-#ifdef _EXCVT
- c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
-#else
- b |= 3; /* Eliminate NT flag if extended char is exist */
-#if !_DF1S /* ASCII only cfg */
- return FR_INVALID_NAME;
-#endif
-#endif
- }
- if (IsDBCS1(c)) { /* DBC 1st byte? */
- d = (BYTE)p[si++]; /* Get 2nd byte */
- if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
- return FR_INVALID_NAME;
- sfn[i++] = c;
- sfn[i++] = d;
- } else { /* Single byte code */
- if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
- return FR_INVALID_NAME;
- if (IsUpper(c)) { /* ASCII large capital? */
- b |= 2;
- } else {
- if (IsLower(c)) { /* ASCII small capital? */
- b |= 1; c -= 0x20;
- }
- }
- sfn[i++] = c;
- }
- }
- *path = &p[si]; /* Return pointer to the next segment */
- c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
-
- if (!i) return FR_INVALID_NAME; /* Reject nul string */
- if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
-
- if (ni == 8) b <<= 2;
- if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
- if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
-
- sfn[NS] = c; /* Store NT flag, File name is created */
-
- return FR_OK;
-#endif
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Get file information from directory entry */
-/*-----------------------------------------------------------------------*/
-#if _FS_MINIMIZE <= 1
-static
-void get_fileinfo ( /* No return code */
- FAT_DIR *dj, /* Pointer to the directory object */
- FILINFO *fno /* Pointer to the file information to be filled */
-)
-{
- int i;
- BYTE nt, *dir;
- TCHAR *p, c;
-
-
- p = fno->fname;
- if (dj->sect) {
- dir = dj->dir;
- nt = dir[DIR_NTres]; /* NT flag */
- for (i = 0; i < 8; i++) { /* Copy name body */
- c = dir[i];
- if (c == ' ') break;
- if (c == 0x05) c = (TCHAR)0xE5;
- if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
-#if _LFN_UNICODE
- if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i + 1]))
- c = (c << 8) | dir[++i];
- c = ff_convert(c, 1);
- if (!c) c = '?';
-#endif
- *p++ = c;
- }
- if (dir[8] != ' ') { /* Copy name extension */
- *p++ = '.';
- for (i = 8; i < 11; i++) {
- c = dir[i];
- if (c == ' ') break;
- if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
-#if _LFN_UNICODE
- if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i + 1]))
- c = (c << 8) | dir[++i];
- c = ff_convert(c, 1);
- if (!c) c = '?';
-#endif
- *p++ = c;
- }
- }
- fno->fattrib = dir[DIR_Attr]; /* Attribute */
- fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
- fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
- fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
- }
- *p = 0;
-
-#if _USE_LFN
- if (fno->lfname) {
- TCHAR *tp = fno->lfname;
- WCHAR w, *lfn;
-
- i = 0;
- if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
- lfn = dj->lfn;
- while ((w = *lfn++) != 0) { /* Get an LFN char */
-#if !_LFN_UNICODE
- w = ff_convert(w, 0); /* Unicode -> OEM conversion */
- if (!w) { i = 0; break; } /* Could not convert, no LFN */
- if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
- tp[i++] = (TCHAR)(w >> 8);
-#endif
- if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
- tp[i++] = (TCHAR)w;
- }
- }
- tp[i] = 0; /* Terminator */
- }
-#endif
-}
-#endif /* _FS_MINIMIZE <= 1 */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Follow a file path */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
- FAT_DIR *dj, /* Directory object to return last directory and found object */
- const TCHAR *path /* Full-path string to find a file or directory */
-)
-{
- FRESULT res;
- BYTE *dir, ns;
-
-
-#if _FS_RPATH
- if (*path == '/' || *path == '\\') { /* There is a heading separator */
- path++; dj->sclust = 0; /* Strip it and start from the root dir */
- } else { /* No heading separator */
- dj->sclust = dj->fs->cdir; /* Start from the current dir */
- }
-#else
- if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
- path++;
- dj->sclust = 0; /* Start from the root dir */
-#endif
-
- if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
- res = dir_sdi(dj, 0);
- dj->dir = 0;
-
- } else { /* Follow path */
- for (;;) {
- res = create_name(dj, &path); /* Get a segment */
- if (res != FR_OK) break;
- res = dir_find(dj); /* Find it */
- ns = *(dj->fn+NS);
- if (res != FR_OK) { /* Failed to find the object */
- if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
- /* Object not found */
- if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
- dj->sclust = 0; dj->dir = 0; /* It is the root dir */
- res = FR_OK;
- if (!(ns & NS_LAST)) continue;
- } else { /* Could not find the object */
- if (!(ns & NS_LAST)) res = FR_NO_PATH;
- }
- break;
- }
- if (ns & NS_LAST) break; /* Last segment match. Function completed. */
- dir = dj->dir; /* There is next segment. Follow the sub directory */
- if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
- res = FR_NO_PATH; break;
- }
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- }
- }
-
- return res;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Load boot record and check if it is an FAT boot record */
-/*-----------------------------------------------------------------------*/
-
-static
-BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
- FATFS *fs, /* File system object */
- DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
-)
-{
- if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
- return 3;
- if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
- return 2;
-
- if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
- return 0;
- if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
- return 0;
-
- return 1;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Make sure that the file system is valid */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
- const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
- FATFS **rfs, /* Pointer to pointer to the found file system object */
- BYTE chk_wp /* !=0: Check media write protection for write access */
-)
-{
- BYTE fmt, b, *tbl;
- UINT vol;
- DSTATUS stat;
- DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
- WORD nrsv;
- const TCHAR *p = *path;
- FATFS *fs;
-
- /* Get logical drive number from the path name */
- vol = p[0] - '0'; /* Is there a drive number? */
- if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
- p += 2; *path = p; /* Return pointer to the path name */
- } else { /* No drive number is given */
-#if _FS_RPATH
- vol = Drive; /* Use current drive */
-#else
- vol = 0; /* Use drive 0 */
-#endif
- }
-
- /* Check if the logical drive is valid or not */
- if (vol >= _DRIVES) /* Is the drive number valid? */
- return FR_INVALID_DRIVE;
- *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
- if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
-
- ENTER_FF(fs); /* Lock file system */
-
- if (fs->fs_type) { /* If the logical drive has been mounted */
- stat = disk_status(fs->drv);
- if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
-#if !_FS_READONLY
- if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
- return FR_WRITE_PROTECTED;
-#endif
- return FR_OK; /* The file system object is valid */
- }
- }
-
- /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
-
- fs->fs_type = 0; /* Clear the file system object */
- fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
- stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
- if (stat & STA_NOINIT) /* Check if the drive is ready */
- return FR_NOT_READY;
-#if _MAX_SS != 512 /* Get disk sector size if needed */
- if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
- return FR_NO_FILESYSTEM;
-#endif
-#if !_FS_READONLY
- if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
- return FR_WRITE_PROTECTED;
-#endif
- /* Search FAT partition on the drive (Supports only generic partitionings, FDISK and SFD) */
- fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
- if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
- /* Check the partition listed in top of the partition table */
- tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
- if (tbl[4]) { /* Is the partition existing? */
- bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
- fmt = check_fs(fs, bsect); /* Check the partition */
- }
- }
- if (fmt == 3) return FR_DISK_ERR;
- if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
-
- /* Following code initializes the file system object */
-
- if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
- return FR_NO_FILESYSTEM;
-
- fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
- if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
- fs->fsize = fasize;
-
- fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
- if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
- fasize *= b; /* Number of sectors for FAT area */
-
- fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
- if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be 1,2,4...128) */
-
- fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
- if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
-
- tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
- if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
-
- nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
- if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
-
- /* Determine the FAT sub type */
- sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / 32); /* RSV+FAT+DIR */
- if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
- nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
- if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
- fmt = FS_FAT12;
- if (nclst >= MIN_FAT16) fmt = FS_FAT16;
- if (nclst >= MIN_FAT32) fmt = FS_FAT32;
-
- /* Boundaries and Limits */
- fs->n_fatent = nclst + 2; /* Number of FAT entries */
- fs->database = bsect + sysect; /* Data start sector */
- fs->fatbase = bsect + nrsv; /* FAT start sector */
- if (fmt == FS_FAT32) {
- if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
- fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
- szbfat = fs->n_fatent * 4; /* (Required FAT size) */
- } else {
- if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
- fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
- szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
- fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
- }
- if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (FAT size must not be less than FAT sectors */
- return FR_NO_FILESYSTEM;
-
-#if !_FS_READONLY
- /* Initialize cluster allocation information */
- fs->free_clust = 0xFFFFFFFF;
- fs->last_clust = 0;
-
- /* Get fsinfo if available */
- if (fmt == FS_FAT32) {
- fs->fsi_flag = 0;
- fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
- if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
- LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
- LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
- LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
- fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
- fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
- }
- }
-#endif
- fs->fs_type = fmt; /* FAT sub-type */
- fs->id = ++Fsid; /* File system mount ID */
- fs->winsect = 0; /* Invalidate sector cache */
- fs->wflag = 0;
-#if _FS_RPATH
- fs->cdir = 0; /* Current directory (root dir) */
-#endif
-#if _FS_SHARE /* Clear file lock semaphores */
- for (vol = 0; vol < _FS_SHARE; vol++)
- fs->flsem[vol].ctr = 0;
-#endif
-
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Check if the file/dir object is valid or not */
-/*-----------------------------------------------------------------------*/
-
-static
-FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
- FATFS *fs, /* Pointer to the file system object */
- WORD id /* Member id of the target object to be checked */
-)
-{
- if (!fs || !fs->fs_type || fs->id != id)
- return FR_INVALID_OBJECT;
-
- ENTER_FF(fs); /* Lock file system */
-
- if (disk_status(fs->drv) & STA_NOINIT)
- return FR_NOT_READY;
-
- return FR_OK;
-}
-
-
-
-
-/*--------------------------------------------------------------------------
-
- Public Functions
-
---------------------------------------------------------------------------*/
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Mount/Unmount a Logical Drive */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_mount (
- BYTE vol, /* Logical drive number to be mounted/unmounted */
- FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
-)
-{
- FATFS *rfs;
-
-
- if (vol >= _DRIVES) /* Check if the drive number is valid */
- return FR_INVALID_DRIVE;
- rfs = FatFs[vol]; /* Get current fs object */
-
- if (rfs) {
-#if _FS_REENTRANT /* Discard sync object of the current volume */
- if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
-#endif
- rfs->fs_type = 0; /* Clear old fs object */
- }
-
- if (fs) {
- fs->fs_type = 0; /* Clear new fs object */
-#if _FS_REENTRANT /* Create sync object for the new volume */
- if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
-#endif
- }
- FatFs[vol] = fs; /* Register new fs object */
-
- return FR_OK;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Open or Create a File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_open (
- FAT_FIL *fp, /* Pointer to the blank file object */
- const TCHAR *path, /* Pointer to the file name */
- BYTE mode /* Access mode and file open mode flags */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- BYTE *dir;
- DEF_NAMEBUF;
-
-
- fp->fs = 0; /* Clear file object */
-
-#if !_FS_READONLY
- mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
- res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
-#else
- mode &= FA_READ;
- res = chk_mounted(&path, &dj.fs, 0);
-#endif
- INIT_BUF(dj);
- if (res == FR_OK)
- res = follow_path(&dj, path); /* Follow the file path */
- dir = dj.dir;
-
-#if !_FS_READONLY /* R/W configuration */
- if (res == FR_OK) {
- if (!dir) /* Current dir itself */
- res = FR_INVALID_NAME;
-#if _FS_SHARE
- else
- res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
-#endif
- }
- /* Create or Open a file */
- if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
- DWORD dw, cl;
-
- if (res != FR_OK) { /* No file, create new */
- if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
-#if _FS_SHARE
- res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
-#else
- res = dir_register(&dj);
-#endif
- mode |= FA_CREATE_ALWAYS;
- dir = dj.dir; /* New entry */
- }
- else { /* Any object is already existing */
- if (mode & FA_CREATE_NEW) { /* Cannot create new */
- res = FR_EXIST;
- } else {
- if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
- res = FR_DENIED;
- }
- }
- if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
- dw = get_fattime(); /* Created time */
- ST_DWORD(dir+DIR_CrtTime, dw);
- dir[DIR_Attr] = 0; /* Reset attribute */
- ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
- cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
- ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
- ST_WORD(dir+DIR_FstClusLO, 0);
- dj.fs->wflag = 1;
- if (cl) { /* Remove the cluster chain if exist */
- dw = dj.fs->winsect;
- res = remove_chain(dj.fs, cl);
- if (res == FR_OK) {
- dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
- res = move_window(dj.fs, dw);
- }
- }
- }
- }
- else { /* Open an existing file */
- if (res == FR_OK) { /* Follow succeeded */
- if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
- res = FR_NO_FILE;
- } else {
- if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
- res = FR_DENIED;
- }
- }
- }
- if (res == FR_OK) {
- if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
- mode |= FA__WRITTEN; /* Set file changed flag */
- fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
- fp->dir_ptr = dir;
-#if _FS_SHARE
- fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
- if (!fp->lockid) res = FR_INT_ERR;
-#endif
- }
-
-#else /* R/O configuration */
- if (res == FR_OK) { /* Follow succeeded */
- if (!dir) { /* Current dir itself */
- res = FR_INVALID_NAME;
- } else {
- if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
- res = FR_NO_FILE;
- }
- }
-#endif
- FREE_BUF();
-
- if (res == FR_OK) {
- fp->flag = mode; /* File access mode */
- fp->org_clust = /* File start cluster */
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
- fp->fptr = 0; /* File pointer */
- fp->dsect = 0;
-#if _USE_FASTSEEK
- fp->cltbl = 0; /* No cluster link map table */
-#endif
- fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Read File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_read (
- FAT_FIL *fp, /* Pointer to the file object */
- void *buff, /* Pointer to data buffer */
- UINT btr, /* Number of bytes to read */
- UINT *br /* Pointer to number of bytes read */
-)
-{
- FRESULT res;
- DWORD clst, sect, remain;
- UINT rcnt, cc;
- BYTE csect, *rbuff = (BYTE*)buff;
-
-
- *br = 0; /* Initialize byte counter */
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
- LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_READ)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
- remain = fp->fsize - fp->fptr;
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
-
- for ( ; btr; /* Repeat until all data transferred */
- rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
- if (!csect) { /* On the cluster boundary? */
- clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- }
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
- if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += csect;
- cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Read maximum contiguous sectors directly */
- if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - csect;
- if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
-#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
-#if _FS_TINY
- if (fp->fs->wflag && fp->fs->winsect - sect < cc)
- mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
-#else
- if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
- mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
-#endif
-#endif
- rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
- continue;
- }
-#if !_FS_TINY
-#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- }
-#endif
- fp->dsect = sect;
- }
- rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
- if (rcnt > btr) rcnt = btr;
-#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
- ABORT(fp->fs, FR_DISK_ERR);
- mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
-#else
- mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
-#endif
- }
-
- LEAVE_FF(fp->fs, FR_OK);
-}
-
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Write File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_write (
- FAT_FIL *fp, /* Pointer to the file object */
- const void *buff, /* Pointer to the data to be written */
- UINT btw, /* Number of bytes to write */
- UINT *bw /* Pointer to number of bytes written */
-)
-{
- FRESULT res;
- DWORD clst, sect;
- UINT wcnt, cc;
- const BYTE *wbuff = (const BYTE*)buff;
- BYTE csect;
-
-
- *bw = 0; /* Initialize byte counter */
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
- LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_WRITE)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
- if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
-
- for ( ; btw; /* Repeat until all data transferred */
- wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
- if (!csect) { /* On the cluster boundary? */
- if (fp->fptr == 0) { /* On the top of the file? */
- clst = fp->org_clust; /* Follow from the origin */
- if (clst == 0) /* When there is no cluster chain, */
- fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
- } else { /* Middle or end of the file */
- clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
- }
- if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- }
-#if _FS_TINY
- if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
- ABORT(fp->fs, FR_DISK_ERR);
-#else
- if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
- if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += csect;
- cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
- if (cc) { /* Write maximum contiguous sectors directly */
- if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
- cc = fp->fs->csize - csect;
- if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
-#if _FS_TINY
- if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
- mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
- fp->fs->wflag = 0;
- }
-#else
- if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
- mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
- continue;
- }
-#if _FS_TINY
- if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
- if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
- fp->fs->winsect = sect;
- }
-#else
- if (fp->dsect != sect) { /* Fill sector buffer with file data */
- if (fp->fptr < fp->fsize &&
- disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- }
-#endif
- fp->dsect = sect;
- }
- wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
- if (wcnt > btw) wcnt = btw;
-#if _FS_TINY
- if (move_window(fp->fs, fp->dsect)) /* Move sector window */
- ABORT(fp->fs, FR_DISK_ERR);
- mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
- fp->fs->wflag = 1;
-#else
- mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
- fp->flag |= FA__DIRTY;
-#endif
- }
-
- if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
- fp->flag |= FA__WRITTEN; /* Set file changed flag */
-
- LEAVE_FF(fp->fs, FR_OK);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Synchronize the File Object */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_sync (
- FAT_FIL *fp /* Pointer to the file object */
-)
-{
- FRESULT res;
- DWORD tim;
- BYTE *dir;
-
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res == FR_OK) {
- if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
-#if !_FS_TINY /* Write-back dirty buffer */
- if (fp->flag & FA__DIRTY) {
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- LEAVE_FF(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- /* Update the directory entry */
- res = move_window(fp->fs, fp->dir_sect);
- if (res == FR_OK) {
- dir = fp->dir_ptr;
- dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
- ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
- ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
- ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
- tim = get_fattime(); /* Update updated time */
- ST_DWORD(dir+DIR_WrtTime, tim);
- fp->flag &= ~FA__WRITTEN;
- fp->fs->wflag = 1;
- res = sync(fp->fs);
- }
- }
- }
-
- LEAVE_FF(fp->fs, res);
-}
-
-#endif /* !_FS_READONLY */
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Close File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_close (
- FAT_FIL *fp /* Pointer to the file object to be closed */
-)
-{
- FRESULT res;
-
-#if _FS_READONLY
- FATFS *fs = fp->fs;
- res = validate(fs, fp->id);
- if (res == FR_OK) fp->fs = 0; /* Discard file object */
- LEAVE_FF(fs, res);
-
-#else
- res = f_sync(fp); /* Flush cached data */
-#if _FS_SHARE
- if (res == FR_OK) { /* Decrement open counter */
-#if _FS_REENTRANT
- res = validate(fp->fs, fp->id);
- if (res == FR_OK) {
- res = dec_lock(fp->fs, fp->lockid);
- unlock_fs(fp->fs, FR_OK);
- }
-#else
- res = dec_lock(fp->fs, fp->lockid);
-#endif
- }
-#endif
- if (res == FR_OK) fp->fs = 0; /* Discard file object */
- return res;
-#endif
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Change Current Drive/Directory */
-/*-----------------------------------------------------------------------*/
-
-#if _FS_RPATH
-
-FRESULT f_chdrive (
- BYTE drv /* Drive number */
-)
-{
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
-
- Drive = drv;
-
- return FR_OK;
-}
-
-
-
-
-FRESULT f_chdir (
- const TCHAR *path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- BYTE *dir;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 0);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the path */
- FREE_BUF();
- if (res == FR_OK) { /* Follow completed */
- dir = dj.dir; /* Pointer to the entry */
- if (!dir) {
- dj.fs->cdir = dj.sclust; /* Start directory itself */
- } else {
- if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
- dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- else
- res = FR_NO_PATH; /* Reached but a file */
- }
- }
- if (res == FR_NO_FILE) res = FR_NO_PATH;
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-#endif
-
-
-
-#if _FS_MINIMIZE <= 2
-/*-----------------------------------------------------------------------*/
-/* Seek File R/W Pointer */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_lseek (
- FAT_FIL *fp, /* Pointer to the file object */
- DWORD ofs /* File pointer from top of file */
-)
-{
- FRESULT res;
-
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check abort flag */
- LEAVE_FF(fp->fs, FR_INT_ERR);
-
-#if _USE_FASTSEEK
- if (fp->cltbl) { /* Fast seek */
- DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
- BYTE csc;
-
- tlen = *tbl++;
- if (ofs == CREATE_LINKMAP) { /* Create link map table */
- cl = fp->org_clust;
- if (cl) {
- do {
- if (tlen < 4) { /* Not enough table items */
- res = FR_NOT_ENOUGH_CORE; break;
- }
- tcl = cl; ncl = 0;
- do { /* Get a fragment and store the top and length */
- pcl = cl; ncl++;
- cl = get_fat(fp->fs, cl);
- if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
- if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- } while (cl == pcl + 1);
- *tbl++ = ncl; *tbl++ = tcl;
- tlen -= 2;
- } while (cl < fp->fs->n_fatent);
- }
- *tbl = 0; /* Terminate table */
-
- } else { /* Fast seek */
- if (ofs > fp->fsize) /* Clip offset at the file size */
- ofs = fp->fsize;
- fp->fptr = ofs; /* Set file pointer */
- if (ofs) {
- dsc = (ofs - 1) / SS(fp->fs);
- cl = dsc / fp->fs->csize;
- for (;;) {
- ncl = *tbl++;
- if (!ncl) ABORT(fp->fs, FR_INT_ERR);
- if (cl < ncl) break;
- cl -= ncl; tbl++;
- }
- fp->curr_clust = cl + *tbl;
- csc = (BYTE)(dsc & (fp->fs->csize - 1));
- dsc = clust2sect(fp->fs, fp->curr_clust);
- if (!dsc) ABORT(fp->fs, FR_INT_ERR);
- dsc += csc;
- if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
-#if !_FS_TINY
-#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
-#endif
- fp->dsect = dsc;
- }
- }
- }
- } else
-#endif
-
- /* Normal Seek */
- {
- DWORD clst, bcs, nsect, ifptr;
-
- if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
-#if !_FS_READONLY
- && !(fp->flag & FA_WRITE)
-#endif
- ) ofs = fp->fsize;
-
- ifptr = fp->fptr;
- fp->fptr = nsect = 0;
- if (ofs) {
- bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
- if (ifptr > 0 &&
- (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
- fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
- ofs -= fp->fptr;
- clst = fp->curr_clust;
- } else { /* When seek to back cluster, */
- clst = fp->org_clust; /* start from the first cluster */
-#if !_FS_READONLY
- if (clst == 0) { /* If no cluster chain, create a new chain */
- clst = create_chain(fp->fs, 0);
- if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->org_clust = clst;
- }
-#endif
- fp->curr_clust = clst;
- }
- if (clst != 0) {
- while (ofs > bcs) { /* Cluster following loop */
-#if !_FS_READONLY
- if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
- clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
- if (clst == 0) { /* When disk gets full, clip file size */
- ofs = bcs; break;
- }
- } else
-#endif
- clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
- fp->curr_clust = clst;
- fp->fptr += bcs;
- ofs -= bcs;
- }
- fp->fptr += ofs;
- if (ofs % SS(fp->fs)) {
- nsect = clust2sect(fp->fs, clst); /* Current sector */
- if (!nsect) ABORT(fp->fs, FR_INT_ERR);
- nsect += ofs / SS(fp->fs);
- }
- }
- }
- if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
-#if !_FS_TINY
-#if !_FS_READONLY
- if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
- if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
- fp->flag &= ~FA__DIRTY;
- }
-#endif
- if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
- ABORT(fp->fs, FR_DISK_ERR);
-#endif
- fp->dsect = nsect;
- }
-#if !_FS_READONLY
- if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
- fp->fsize = fp->fptr;
- fp->flag |= FA__WRITTEN;
- }
-#endif
- }
-
- LEAVE_FF(fp->fs, res);
-}
-
-
-
-#if _FS_MINIMIZE <= 1
-/*-----------------------------------------------------------------------*/
-/* Create a Directroy Object */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_opendir (
- FAT_DIR *dj, /* Pointer to directory object to create */
- const TCHAR *path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- BYTE *dir;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj->fs, 0);
- if (res == FR_OK) {
- INIT_BUF(*dj);
- res = follow_path(dj, path); /* Follow the path to the directory */
- FREE_BUF();
- if (res == FR_OK) { /* Follow completed */
- dir = dj->dir;
- if (dir) { /* It is not the current dir */
- if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
- dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- } else { /* The object is not a directory */
- res = FR_NO_PATH;
- }
- }
- if (res == FR_OK) {
- dj->id = dj->fs->id;
- res = dir_sdi(dj, 0); /* Rewind dir */
- }
- }
- if (res == FR_NO_FILE) res = FR_NO_PATH;
- }
-
- LEAVE_FF(dj->fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Read Directory Entry in Sequense */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_readdir (
- FAT_DIR *dj, /* Pointer to the open directory object */
- FILINFO *fno /* Pointer to file information to return */
-)
-{
- FRESULT res;
- DEF_NAMEBUF;
-
-
- res = validate(dj->fs, dj->id); /* Check validity of the object */
- if (res == FR_OK) {
- if (!fno) {
- res = dir_sdi(dj, 0);
- } else {
- INIT_BUF(*dj);
- res = dir_read(dj);
- if (res == FR_NO_FILE) {
- dj->sect = 0;
- res = FR_OK;
- }
- if (res == FR_OK) { /* A valid entry is found */
- get_fileinfo(dj, fno); /* Get the object information */
- res = dir_next(dj, 0); /* Increment index for next */
- if (res == FR_NO_FILE) {
- dj->sect = 0;
- res = FR_OK;
- }
- }
- FREE_BUF();
- }
- }
-
- LEAVE_FF(dj->fs, res);
-}
-
-
-
-#if _FS_MINIMIZE == 0
-/*-----------------------------------------------------------------------*/
-/* Get File Status */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_stat (
- const TCHAR *path, /* Pointer to the file path */
- FILINFO *fno /* Pointer to file information to return */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 0);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) { /* Follow completed */
- if (dj.dir) /* Found an object */
- get_fileinfo(&dj, fno);
- else /* It is root dir */
- res = FR_INVALID_NAME;
- }
- FREE_BUF();
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-#if !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Get Number of Free Clusters */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_getfree (
- const TCHAR *path, /* Pointer to the logical drive number (root dir) */
- DWORD *nclst, /* Pointer to the variable to return number of free clusters */
- FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
-)
-{
- FRESULT res;
- DWORD n, clst, sect, stat;
- UINT i;
- BYTE fat, *p;
-
-
- /* Get drive number */
- res = chk_mounted(&path, fatfs, 0);
- if (res == FR_OK) {
- /* If free_clust is valid, return it without full cluster scan */
- if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
- *nclst = (*fatfs)->free_clust;
- } else {
- /* Get number of free clusters */
- fat = (*fatfs)->fs_type;
- n = 0;
- if (fat == FS_FAT12) {
- clst = 2;
- do {
- stat = get_fat(*fatfs, clst);
- if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
- if (stat == 1) { res = FR_INT_ERR; break; }
- if (stat == 0) n++;
- } while (++clst < (*fatfs)->n_fatent);
- } else {
- clst = (*fatfs)->n_fatent;
- sect = (*fatfs)->fatbase;
- i = 0; p = 0;
- do {
- if (!i) {
- res = move_window(*fatfs, sect++);
- if (res != FR_OK) break;
- p = (*fatfs)->win;
- i = SS(*fatfs);
- }
- if (fat == FS_FAT16) {
- if (LD_WORD(p) == 0) n++;
- p += 2; i -= 2;
- } else {
- if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
- p += 4; i -= 4;
- }
- } while (--clst);
- }
- (*fatfs)->free_clust = n;
- if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
- *nclst = n;
- }
- }
- LEAVE_FF(*fatfs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Truncate File */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_truncate (
- FAT_FIL *fp /* Pointer to the file object */
-)
-{
- FRESULT res;
- DWORD ncl;
-
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res == FR_OK) {
- if (fp->flag & FA__ERROR) { /* Check abort flag */
- res = FR_INT_ERR;
- } else {
- if (!(fp->flag & FA_WRITE)) /* Check access mode */
- res = FR_DENIED;
- }
- }
- if (res == FR_OK) {
- if (fp->fsize > fp->fptr) {
- fp->fsize = fp->fptr; /* Set file size to current R/W point */
- fp->flag |= FA__WRITTEN;
- if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
- res = remove_chain(fp->fs, fp->org_clust);
- fp->org_clust = 0;
- } else { /* When truncate a part of the file, remove remaining clusters */
- ncl = get_fat(fp->fs, fp->curr_clust);
- res = FR_OK;
- if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (ncl == 1) res = FR_INT_ERR;
- if (res == FR_OK && ncl < fp->fs->n_fatent) {
- res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
- if (res == FR_OK) res = remove_chain(fp->fs, ncl);
- }
- }
- }
- if (res != FR_OK) fp->flag |= FA__ERROR;
- }
-
- LEAVE_FF(fp->fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Delete a File or Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_unlink (
- const TCHAR *path /* Pointer to the file or directory path */
-)
-{
- FRESULT res;
- FAT_DIR dj, sdj;
- BYTE *dir;
- DWORD dclst;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 1);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the file path */
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME; /* Cannot remove dot entry */
-#if _FS_SHARE
- if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
-#endif
- if (res == FR_OK) { /* The object is accessible */
- dir = dj.dir;
- if (!dir) {
- res = FR_INVALID_NAME; /* Cannot remove the start directory */
- } else {
- if (dir[DIR_Attr] & AM_RDO)
- res = FR_DENIED; /* Cannot remove R/O object */
- }
- dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
- if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
- if (dclst < 2) {
- res = FR_INT_ERR;
- } else {
- mem_cpy(&sdj, &dj, sizeof(FAT_DIR)); /* Check if the sub-dir is empty or not */
- sdj.sclust = dclst;
- res = dir_sdi(&sdj, 2); /* Exclude dot entries */
- if (res == FR_OK) {
- res = dir_read(&sdj);
- if (res == FR_OK /* Not empty dir */
-#if _FS_RPATH
- || dclst == sdj.fs->cdir /* Current dir */
-#endif
- ) res = FR_DENIED;
- if (res == FR_NO_FILE) res = FR_OK; /* Empty */
- }
- }
- }
- if (res == FR_OK) {
- res = dir_remove(&dj); /* Remove the directory entry */
- if (res == FR_OK) {
- if (dclst) /* Remove the cluster chain if exist */
- res = remove_chain(dj.fs, dclst);
- if (res == FR_OK) res = sync(dj.fs);
- }
- }
- }
- FREE_BUF();
- }
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Create a Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_mkdir (
- const TCHAR *path /* Pointer to the directory path */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- BYTE *dir, n;
- DWORD dsc, dcl, pcl, tim = get_fattime();
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 1);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the file path */
- if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
- if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res == FR_NO_FILE) { /* Can create a new directory */
- dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
- res = FR_OK;
- if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
- if (dcl == 1) res = FR_INT_ERR;
- if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
- if (res == FR_OK) /* Flush FAT */
- res = move_window(dj.fs, 0);
- if (res == FR_OK) { /* Initialize the new directory table */
- dsc = clust2sect(dj.fs, dcl);
- dir = dj.fs->win;
- mem_set(dir, 0, SS(dj.fs));
- mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
- dir[DIR_Name] = '.';
- dir[DIR_Attr] = AM_DIR;
- ST_DWORD(dir+DIR_WrtTime, tim);
- ST_WORD(dir+DIR_FstClusLO, dcl);
- ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
- mem_cpy(dir+32, dir, 32); /* Create ".." entry */
- dir[33] = '.'; pcl = dj.sclust;
- if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
- pcl = 0;
- ST_WORD(dir+32+DIR_FstClusLO, pcl);
- ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
- for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
- dj.fs->winsect = dsc++;
- dj.fs->wflag = 1;
- res = move_window(dj.fs, 0);
- if (res != FR_OK) break;
- mem_set(dir, 0, SS(dj.fs));
- }
- }
- if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
- if (res != FR_OK) {
- remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
- } else {
- dir = dj.dir;
- dir[DIR_Attr] = AM_DIR; /* Attribute */
- ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
- ST_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
- ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
- dj.fs->wflag = 1;
- res = sync(dj.fs);
- }
- }
- FREE_BUF();
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Change Attribute */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_chmod (
- const TCHAR *path, /* Pointer to the file path */
- BYTE value, /* Attribute bits */
- BYTE mask /* Attribute mask to change */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- BYTE *dir;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 1);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the file path */
- FREE_BUF();
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res == FR_OK) {
- dir = dj.dir;
- if (!dir) { /* Is it a root directory? */
- res = FR_INVALID_NAME;
- } else { /* File or sub directory */
- mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
- dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
- dj.fs->wflag = 1;
- res = sync(dj.fs);
- }
- }
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Change Timestamp */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_utime (
- const TCHAR *path, /* Pointer to the file/directory name */
- const FILINFO *fno /* Pointer to the time stamp to be set */
-)
-{
- FRESULT res;
- FAT_DIR dj;
- BYTE *dir;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path, &dj.fs, 1);
- if (res == FR_OK) {
- INIT_BUF(dj);
- res = follow_path(&dj, path); /* Follow the file path */
- FREE_BUF();
- if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
- if (res == FR_OK) {
- dir = dj.dir;
- if (!dir) { /* Root directory */
- res = FR_INVALID_NAME;
- } else { /* File or sub-directory */
- ST_WORD(dir+DIR_WrtTime, fno->ftime);
- ST_WORD(dir+DIR_WrtDate, fno->fdate);
- dj.fs->wflag = 1;
- res = sync(dj.fs);
- }
- }
- }
-
- LEAVE_FF(dj.fs, res);
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Rename File/Directory */
-/*-----------------------------------------------------------------------*/
-
-FRESULT f_rename (
- const TCHAR *path_old, /* Pointer to the old name */
- const TCHAR *path_new /* Pointer to the new name */
-)
-{
- FRESULT res;
- FAT_DIR djo, djn;
- BYTE buf[21], *dir;
- DWORD dw;
- DEF_NAMEBUF;
-
-
- res = chk_mounted(&path_old, &djo.fs, 1);
- if (res == FR_OK) {
- djn.fs = djo.fs;
- INIT_BUF(djo);
- res = follow_path(&djo, path_old); /* Check old object */
- if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
- res = FR_INVALID_NAME;
-#if _FS_SHARE
- if (res == FR_OK) res = chk_lock(&djo, 2);
-#endif
- if (res == FR_OK) { /* Old object is found */
- if (!djo.dir) { /* Is root dir? */
- res = FR_NO_FILE;
- } else {
- mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
- mem_cpy(&djn, &djo, sizeof(FAT_DIR)); /* Check new object */
- res = follow_path(&djn, path_new);
- if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
- if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
-/* Start critical section that any interruption or error can cause cross-link */
- res = dir_register(&djn); /* Register the new entry */
- if (res == FR_OK) {
- dir = djn.dir; /* Copy object information except for name */
- mem_cpy(dir+13, buf+2, 19);
- dir[DIR_Attr] = buf[0] | AM_ARC;
- djo.fs->wflag = 1;
- if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
- dw = clust2sect(djn.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
- if (!dw) {
- res = FR_INT_ERR;
- } else {
- res = move_window(djn.fs, dw);
- dir = djn.fs->win+32; /* .. entry */
- if (res == FR_OK && dir[1] == '.') {
- dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
- ST_WORD(dir+DIR_FstClusLO, dw);
- ST_WORD(dir+DIR_FstClusHI, dw >> 16);
- djn.fs->wflag = 1;
- }
- }
- }
- if (res == FR_OK) {
- res = dir_remove(&djo); /* Remove old entry */
- if (res == FR_OK)
- res = sync(djo.fs);
- }
- }
-/* End critical section */
- }
- }
- }
- FREE_BUF();
- }
- LEAVE_FF(djo.fs, res);
-}
-
-#endif /* !_FS_READONLY */
-#endif /* _FS_MINIMIZE == 0 */
-#endif /* _FS_MINIMIZE <= 1 */
-#endif /* _FS_MINIMIZE <= 2 */
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Forward data to the stream directly (available on only tiny cfg) */
-/*-----------------------------------------------------------------------*/
-#if _USE_FORWARD && _FS_TINY
-
-FRESULT f_forward (
- FAT_FIL *fp, /* Pointer to the file object */
- UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
- UINT btr, /* Number of bytes to forward */
- UINT *bf /* Pointer to number of bytes forwarded */
-)
-{
- FRESULT res;
- DWORD remain, clst, sect;
- UINT rcnt;
- BYTE csect;
-
-
- *bf = 0; /* Initialize byte counter */
-
- res = validate(fp->fs, fp->id); /* Check validity of the object */
- if (res != FR_OK) LEAVE_FF(fp->fs, res);
- if (fp->flag & FA__ERROR) /* Check error flag */
- LEAVE_FF(fp->fs, FR_INT_ERR);
- if (!(fp->flag & FA_READ)) /* Check access mode */
- LEAVE_FF(fp->fs, FR_DENIED);
-
- remain = fp->fsize - fp->fptr;
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
-
- for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
- fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
- csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
- if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
- if (!csect) { /* On the cluster boundary? */
- clst = (fp->fptr == 0) ? /* On the top of the file? */
- fp->org_clust : get_fat(fp->fs, fp->curr_clust);
- if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
- if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
- fp->curr_clust = clst; /* Update current cluster */
- }
- }
- sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
- if (!sect) ABORT(fp->fs, FR_INT_ERR);
- sect += csect;
- if (move_window(fp->fs, sect)) /* Move sector window */
- ABORT(fp->fs, FR_DISK_ERR);
- fp->dsect = sect;
- rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
- if (rcnt > btr) rcnt = btr;
- rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
- if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
- }
-
- LEAVE_FF(fp->fs, FR_OK);
-}
-#endif /* _USE_FORWARD */
-
-
-
-#if _USE_MKFS && !_FS_READONLY
-/*-----------------------------------------------------------------------*/
-/* Create File System on the Drive */
-/*-----------------------------------------------------------------------*/
-#define N_ROOTDIR 512 /* Multiple of 32 */
-#define N_FATS 1 /* 1 or 2 */
-
-
-FRESULT f_mkfs (
- BYTE drv, /* Logical drive number */
- BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
- UINT au /* Allocation unit size [bytes] */
-)
-{
- static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
- static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
- BYTE fmt, md, *tbl;
- DWORD n_clst, vs, n;
- UINT as, i;
- DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
- DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
- FATFS *fs;
- DSTATUS stat;
-
-
- /* Check mounted drive and clear work area */
- if (drv >= _DRIVES) return FR_INVALID_DRIVE;
- fs = FatFs[drv];
- if (!fs) return FR_NOT_ENABLED;
- fs->fs_type = 0;
- drv = LD2PD(drv);
-
- /* Get disk statics */
- stat = disk_initialize(drv);
- if (stat & STA_NOINIT) return FR_NOT_READY;
- if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
-#if _MAX_SS != 512 /* Get disk sector size */
- if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
- return FR_DISK_ERR;
-#endif
- if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
- return FR_DISK_ERR;
- b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
- n_vol -= b_vol;
- if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
- if (!au) { /* AU auto selection */
- vs = n_vol / (2000 / (SS(fs) / 512));
- for (i = 0; vs < vst[i]; i++) ;
- au = cst[i];
- }
- if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
- au /= SS(fs); /* Number of sectors per cluster */
- if (au == 0) au = 1;
- if (au > 128) au = 128;
-
- /* Pre-compute number of clusters and FAT syb-type */
- n_clst = n_vol / au;
- fmt = FS_FAT12;
- if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
- if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
-
- /* Determine offset and size of FAT structure */
- if (fmt == FS_FAT32) {
- n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
- n_rsv = 32;
- n_dir = 0;
- } else {
- n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
- n_fat = (n_fat + SS(fs) - 1) / SS(fs);
- n_rsv = 1;
- n_dir = N_ROOTDIR * 32UL / SS(fs);
- }
- b_fat = b_vol + n_rsv; /* FAT area start sector */
- b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
- b_data = b_dir + n_dir; /* Data area start sector */
- if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
-
- /* Align data start sector to erase block boundary (for flash memory media) */
- if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
- if (!n || n > 32768) return FR_MKFS_ABORTED;
- n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
- n = (n - b_data) / N_FATS;
- if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
- n_rsv += n;
- b_fat += n;
- } else { /* FAT12/16: Expand FAT size */
- n_fat += n;
- }
- /* b_dir and b_data are no longer used below */
-
- /* Determine number of cluster and final check of validity of the FAT sub-type */
- n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
- if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
- || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
- return FR_MKFS_ABORTED;
-
- /* Create partition table if required */
- if (sfd == 1) {
- md = 0xF0;
- } else {
- DWORD n_disk = b_vol + n_vol;
-
- mem_set(fs->win, 0, SS(fs));
- tbl = fs->win+MBR_Table;
- ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
- if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
- n_disk = n_disk / 63 / 255;
- tbl[7] = (BYTE)n_disk;
- tbl[6] = (BYTE)((n_disk >> 2) | 63);
- } else {
- ST_WORD(&tbl[6], 0xFFFF);
- }
- tbl[5] = 254;
- if (fmt != FS_FAT32) /* System ID */
- tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
- else
- tbl[4] = 0x0c;
- ST_DWORD(tbl+8, 63); /* Partition start in LBA */
- ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
- ST_WORD(tbl+64, 0xAA55); /* Signature */
- if (disk_write(drv, fs->win, 0, 1) != RES_OK)
- return FR_DISK_ERR;
- md = 0xF8;
- }
-
- /* Create VBR */
- tbl = fs->win; /* Clear buffer */
- mem_set(tbl, 0, SS(fs));
- ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
- as = SS(fs); /* Sector size */
- ST_WORD(tbl+BPB_BytsPerSec, as);
- tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
- ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
- tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
- as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
- ST_WORD(tbl+BPB_RootEntCnt, as);
- if (n_vol < 0x10000) { /* Number of total sectors */
- ST_WORD(tbl+BPB_TotSec16, n_vol);
- } else {
- ST_DWORD(tbl+BPB_TotSec32, n_vol);
- }
- tbl[BPB_Media] = md; /* Media descriptor */
- ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
- ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
- ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
- n = get_fattime(); /* Use current time as VSN */
- if (fmt == FS_FAT32) {
- ST_DWORD(tbl+BS_VolID32, n); /* VSN */
- ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
- ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
- ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
- ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
- tbl[BS_DrvNum32] = 0x80; /* Drive number */
- tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume label, FAT signature */
- } else {
- ST_DWORD(tbl+BS_VolID, n); /* VSN */
- ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
- tbl[BS_DrvNum] = 0x80; /* Drive number */
- tbl[BS_BootSig] = 0x29; /* Extended boot signature */
- mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume label, FAT signature */
- }
- ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
- if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
- return FR_DISK_ERR;
- if (fmt == FS_FAT32) /* Backup (VBR+6) */
- disk_write(drv, tbl, b_vol + 6, 1);
-
- /* Initialize FAT area */
- for (i = 0; i < N_FATS; i++) {
- mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
- n = md; /* Media descriptor byte */
- if (fmt != FS_FAT32) {
- n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
- ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
- } else {
- n |= 0x0FFFFF00;
- ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
- ST_DWORD(tbl+4, 0x0FFFFFFF);
- ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
- }
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
- return FR_DISK_ERR;
- mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
- for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
- return FR_DISK_ERR;
- }
- }
-
- /* Initialize root directory */
- n = (fmt == FS_FAT32) ? as : n_dir;
- while (n--) {
- if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
- return FR_DISK_ERR;
- }
-
- /* Create FSInfo record if needed */
- if (fmt == FS_FAT32) {
- ST_WORD(tbl+BS_55AA, 0xAA55);
- ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
- ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
- ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
- ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
- disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
- disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
- }
-
- return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
-}
-
-#endif /* _USE_MKFS && !_FS_READONLY */
-
-
-
-
-#if _USE_STRFUNC
-/*-----------------------------------------------------------------------*/
-/* Get a string from the file */
-/*-----------------------------------------------------------------------*/
-TCHAR* f_gets (
- TCHAR* buff, /* Pointer to the string buffer to read */
- int len, /* Size of string buffer (characters) */
- FAT_FIL* fil /* Pointer to the file object */
-)
-{
- int n = 0;
- TCHAR c, *p = buff;
- BYTE s[2];
- UINT rc;
-
-
- while (n < len - 1) { /* Read bytes until buffer gets filled */
- f_read(fil, s, 1, &rc);
- if (rc != 1) break; /* Break on EOF or error */
- c = s[0];
-#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
- if (c >= 0x80) {
- if (c < 0xC0) continue; /* Skip stray trailer */
- if (c < 0xE0) { /* Two-byte sequense */
- f_read(fil, s, 1, &rc);
- if (rc != 1) break;
- c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
- if (c < 0x80) c = '?';
- } else {
- if (c < 0xF0) { /* Three-byte sequense */
- f_read(fil, s, 2, &rc);
- if (rc != 2) break;
- c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
- if (c < 0x800) c = '?';
- } else { /* Reject four-byte sequense */
- c = '?';
- }
- }
- }
-#endif
-#if _USE_STRFUNC >= 2
- if (c == '\r') continue; /* Strip '\r' */
-#endif
- *p++ = c;
- n++;
- if (c == '\n') break; /* Break on EOL */
- }
- *p = 0;
- return n ? buff : 0; /* When no data read (eof or error), return with error. */
-}
-
-
-
-#if !_FS_READONLY
-#include <stdarg.h>
-/*-----------------------------------------------------------------------*/
-/* Put a character to the file */
-/*-----------------------------------------------------------------------*/
-int f_putc (
- TCHAR c, /* A character to be output */
- FAT_FIL* fil /* Pointer to the file object */
-)
-{
- UINT bw, btw;
- BYTE s[3];
-
-
-#if _USE_STRFUNC >= 2
- if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
-#endif
-
-#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
- if (c < 0x80) { /* 7-bit */
- s[0] = (BYTE)c;
- btw = 1;
- } else {
- if (c < 0x800) { /* 11-bit */
- s[0] = (BYTE)(0xC0 | (c >> 6));
- s[1] = (BYTE)(0x80 | (c & 0x3F));
- btw = 2;
- } else { /* 16-bit */
- s[0] = (BYTE)(0xE0 | (c >> 12));
- s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
- s[2] = (BYTE)(0x80 | (c & 0x3F));
- btw = 3;
- }
- }
-#else /* Write the character without conversion */
- s[0] = (BYTE)c;
- btw = 1;
-#endif
- f_write(fil, s, btw, &bw); /* Write the char to the file */
- return (bw == btw) ? 1 : EOF; /* Return the result */
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Put a string to the file */
-/*-----------------------------------------------------------------------*/
-int f_puts (
- const TCHAR* str, /* Pointer to the string to be output */
- FAT_FIL* fil /* Pointer to the file object */
-)
-{
- int n;
-
-
- for (n = 0; *str; str++, n++) {
- if (f_putc(*str, fil) == EOF) return EOF;
- }
- return n;
-}
-
-
-
-
-/*-----------------------------------------------------------------------*/
-/* Put a formatted string to the file */
-/*-----------------------------------------------------------------------*/
-int f_printf (
- FAT_FIL* fil, /* Pointer to the file object */
- const TCHAR* str, /* Pointer to the format string */
- ... /* Optional arguments... */
-)
-{
- va_list arp;
- BYTE f, r;
- UINT i, w;
- ULONG val;
- TCHAR c, d, s[16];
- int res, cc;
-
-
- va_start(arp, str);
-
- for (cc = res = 0; cc != EOF; res += cc) {
- c = *str++;
- if (c == 0) break; /* End of string */
- if (c != '%') { /* Non escape character */
- cc = f_putc(c, fil);
- if (cc != EOF) cc = 1;
- continue;
- }
- w = f = 0;
- c = *str++;
- if (c == '0') { /* Flag: '0' padding */
- f = 1; c = *str++;
- }
- while (IsDigit(c)) { /* Precision */
- w = w * 10 + c - '0';
- c = *str++;
- }
- if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
- f |= 2; c = *str++;
- }
- if (!c) break;
- d = c;
- if (IsLower(d)) d -= 0x20;
- switch (d) { /* Type is... */
- case 'S' : /* String */
- cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
- case 'C' : /* Character */
- cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
- case 'B' : /* Binary */
- r = 2; break;
- case 'O' : /* Octal */
- r = 8; break;
- case 'D' : /* Signed decimal */
- case 'U' : /* Unsigned decimal */
- r = 10; break;
- case 'X' : /* Hexdecimal */
- r = 16; break;
- default: /* Unknown */
- cc = f_putc(c, fil); continue;
- }
-
- /* Get an argument */
- val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
- if (d == 'D' && (val & 0x80000000)) {
- val = 0 - val;
- f |= 4;
- }
- /* Put it in numeral string */
- i = 0;
- do {
- d = (TCHAR)(val % r); val /= r;
- if (d > 9) {
- d += 7;
- if (c == 'x') d += 0x20;
- }
- s[i++] = d + '0';
- } while (val && i < sizeof(s) / sizeof(s[0]));
- if (f & 4) s[i++] = '-';
- cc = 0;
- while (i < w-- && cc != EOF) {
- cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
- res++;
- }
- do {
- cc = f_putc(s[--i], fil);
- res++;
- } while (i && cc != EOF);
- if (cc != EOF) cc = 0;
- }
-
- va_end(arp);
- return (cc == EOF) ? cc : res;
-}
-
-#endif /* !_FS_READONLY */
+/*----------------------------------------------------------------------------/
+/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
+/-----------------------------------------------------------------------------/
+/ FatFs module is a generic FAT file system module for small embedded systems.
+/ This is a free software that opened for education, research and commercial
+/ developments under license policy of following terms.
+/
+/ Copyright (C) 2010, ChaN, all right reserved.
+/
+/ * The FatFs module is a free software and there is NO WARRANTY.
+/ * No restriction on use. You can use, modify and redistribute it for
+/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/-----------------------------------------------------------------------------/
+/ Feb 26,'06 R0.00 Prototype.
+/
+/ Apr 29,'06 R0.01 First stable version.
+/
+/ Jun 01,'06 R0.02 Added FAT12 support.
+/ Removed unbuffered mode.
+/ Fixed a problem on small (<32M) partition.
+/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
+/
+/ Sep 22,'06 R0.03 Added f_rename().
+/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
+/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
+/ Fixed f_mkdir() creates incorrect directory on FAT32.
+/
+/ Feb 04,'07 R0.04 Supported multiple drive system.
+/ Changed some interfaces for multiple drive system.
+/ Changed f_mountdrv() to f_mount().
+/ Added f_mkfs().
+/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
+/ Added a capability of extending file size to f_lseek().
+/ Added minimization level 3.
+/ Fixed an endian sensitive code in f_mkfs().
+/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
+/ Added FSInfo support.
+/ Fixed DBCS name can result FR_INVALID_NAME.
+/ Fixed short seek (<= csize) collapses the file object.
+/
+/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
+/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
+/ Fixed f_mkdir() on FAT32 creates incorrect directory.
+/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
+/ Fixed off by one error at FAT sub-type determination.
+/ Fixed btr in f_read() can be mistruncated.
+/ Fixed cached sector is not flushed when create and close
+/ without write.
+/
+/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
+/ Improved performance of f_lseek() on moving to the same
+/ or following cluster.
+/
+/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
+/ Added long file name support.
+/ Added multiple code page support.
+/ Added re-entrancy for multitask operation.
+/ Added auto cluster size selection to f_mkfs().
+/ Added rewind option to f_readdir().
+/ Changed result code of critical errors.
+/ Renamed string functions to avoid name collision.
+/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
+/ Added multiple sector size support.
+/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
+/ Fixed wrong cache control in f_lseek().
+/ Added relative path feature.
+/ Added f_chdir() and f_chdrive().
+/ Added proper case conversion to extended char.
+/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
+/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+/ Fixed name matching error on the 13 char boundary.
+/ Added a configuration option, _LFN_UNICODE.
+/ Changed f_readdir() to return the SFN with always upper
+/ case on non-LFN cfg.
+/
+/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN)
+/ Added file lock feature. (_FS_SHARE)
+/ Added fast seek feature. (_USE_FASTSEEK)
+/ Changed some types on the API, XCHAR->TCHAR.
+/ Changed fname member in the FILINFO structure on Unicode cfg.
+/ String functions support UTF-8 encoding files on Unicode cfg.
+/---------------------------------------------------------------------------*/
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#include "ff.h" /* FatFs configurations and declarations */
+#include "diskio.h" /* Declarations of low level disk I/O functions */
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 8085
+#error Wrong include file (ff.h).
+#endif
+
+
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* Definitions corresponds to multiple sector size */
+#if _MAX_SS == 512 /* Single sector size */
+#define SS(fs) 512U
+#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
+#define SS(fs) ((fs)->ssize)
+#else
+#error Wrong sector size.
+#endif
+
+
+/* Reentrancy related */
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area must not be used in re-entrant configuration.
+#endif
+#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
+
+#else
+#define ENTER_FF(fs)
+#define LEAVE_FF(fs, res) return res
+
+#endif
+
+#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
+
+
+/* Character code support macros */
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+#define IsDigit(c) (((c)>='0')&&((c)<='9'))
+
+#if _DF1S /* Code page is DBCS */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* Code page is SBCS */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
+
+/* Name status flags */
+#define NS 11 /* Offset of name status byte */
+#define NS_LOSS 0x01 /* Out of 8.3 format */
+#define NS_LFN 0x02 /* Force to create LFN entry */
+#define NS_LAST 0x04 /* Last segment */
+#define NS_BODY 0x08 /* Lower case flag (body) */
+#define NS_EXT 0x10 /* Lower case flag (ext) */
+#define NS_DOT 0x20 /* Dot entry */
+
+
+
+/*------------------------------------------------------------*/
+/* Work area */
+
+#if !_DRIVES
+#error Number of drives must not be 0.
+#endif
+static
+WORD Fsid; /* File system mount ID */
+static
+FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
+
+#if _FS_RPATH
+static
+BYTE Drive; /* Current drive */
+#endif
+
+
+#if _USE_LFN == 0 /* No LFN */
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) (dobj).fn = sfn
+#define FREE_BUF()
+
+#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
+static WCHAR LfnBuf[_MAX_LFN + 1];
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
+#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
+ if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
+ (dobj).lfn = lfn; (dobj).fn = sfn; }
+#define FREE_BUF() ff_memfree(lfn)
+
+#else
+#error Wrong LFN configuration.
+#endif
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, int cnt) {
+ BYTE *d = (BYTE*)dst;
+ const BYTE *s = (const BYTE*)src;
+
+#if _WORD_ACCESS == 1
+ while (cnt >= sizeof(int)) {
+ *(int*)d = *(int*)s;
+ d += sizeof(int); s += sizeof(int);
+ cnt -= sizeof(int);
+ }
+#endif
+ while (cnt--)
+ *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, int cnt) {
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, int cnt) {
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
+ int r = 0;
+
+ while (cnt-- && (r = *d++ - *s++) == 0) ;
+ return r;
+}
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {
+ while (*str && *str != chr) str++;
+ return *str;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume */
+/*-----------------------------------------------------------------------*/
+#if _FS_REENTRANT
+
+static
+int lock_fs (
+ FATFS *fs /* File system object */
+)
+{
+ return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+ FATFS *fs, /* File system object */
+ FRESULT res /* Result code to be returned */
+)
+{
+ if (res != FR_NOT_ENABLED &&
+ res != FR_INVALID_DRIVE &&
+ res != FR_INVALID_OBJECT &&
+ res != FR_TIMEOUT) {
+ ff_rel_grant(fs->sobj);
+ }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* File shareing control functions */
+/*-----------------------------------------------------------------------*/
+#if _FS_SHARE
+
+static
+FRESULT chk_lock ( /* Check if the file can be accessed */
+ FAT_DIR* dj, /* Directory object pointing the file to be checked */
+ int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i, be;
+
+ /* Search file semaphore table */
+ for (i = be = 0; i < _FS_SHARE; i++) {
+ if (dj->fs->flsem[i].ctr) { /* Existing entry */
+ if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
+ dj->fs->flsem[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file has not been opened */
+ return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock ( /* Check if an entry is available for a new file */
+ FATFS* fs /* File system object */
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE && fs->flsem[i].ctr; i++) ;
+ return (i == _FS_SHARE) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
+ FAT_DIR* dj, /* Directory object pointing the file to register or increment */
+ int acc /* Desired access mode (0:Read, !0:Write) */
+)
+{
+ UINT i;
+
+
+ for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
+ if (dj->fs->flsem[i].ctr &&
+ dj->fs->flsem[i].clu == dj->sclust &&
+ dj->fs->flsem[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ dj->fs->flsem[i].clu = dj->sclust;
+ dj->fs->flsem[i].idx = dj->index;
+ }
+
+ if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
+
+ dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement file open counter */
+ FATFS* fs, /* File system object */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = fs->flsem[i].ctr;
+ if (n >= 0x100) n = 0;
+ if (n) n--;
+ fs->flsem[i].ctr = n;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change window offset */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT move_window (
+ FATFS *fs, /* File system object */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
+) /* Move to zero only writes back dirty window */
+{
+ DWORD wsect;
+
+
+ wsect = fs->winsect;
+ if (wsect != sector) { /* Changed current window */
+#if !_FS_READONLY
+ if (fs->wflag) { /* Write back dirty window if needed */
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->wflag = 0;
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
+ BYTE nf;
+ for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
+ wsect += fs->fsize;
+ disk_write(fs->drv, fs->win, wsect, 1);
+ }
+ }
+ }
+#endif
+ if (sector) {
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->winsect = sector;
+ }
+ }
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Clean-up cached data */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
+ FATFS *fs /* File system object */
+)
+{
+ FRESULT res;
+
+
+ res = move_window(fs, 0);
+ if (res == FR_OK) {
+ /* Update FSInfo sector if needed */
+ if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
+ fs->winsect = 0;
+ mem_set(fs->win, 0, 512);
+ ST_WORD(fs->win+BS_55AA, 0xAA55);
+ ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
+ ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
+ ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
+ ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
+ disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
+ fs->fsi_flag = 0;
+ }
+ /* Make sure that no pending write process in the physical drive */
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
+ res = FR_DISK_ERR;
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to get the link information */
+)
+{
+ UINT wc, bc;
+ BYTE *p;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
+ return 1;
+
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = (UINT)clst; bc += bc / 2;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc = fs->win[bc % SS(fs)]; bc++;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc |= fs->win[bc % SS(fs)] << 8;
+ return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+
+ case FS_FAT16 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ return LD_WORD(p);
+
+ case FS_FAT32 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ return LD_DWORD(p) & 0x0FFFFFFF;
+ }
+
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+
+FRESULT put_fat (
+ FATFS *fs, /* File system object */
+ DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
+ DWORD val /* New value to mark the cluster */
+)
+{
+ UINT bc;
+ BYTE *p;
+ FRESULT res;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = clst; bc += bc / 2;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+ bc++;
+ fs->wflag = 1;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+ break;
+
+ case FS_FAT16 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
+ break;
+
+ case FS_FAT32 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
+ break;
+
+ default :
+ res = FR_INT_ERR;
+ }
+ fs->wflag = 1;
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain (
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to remove a chain from */
+)
+{
+ FRESULT res;
+ DWORD nxt;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ res = FR_OK;
+ while (clst < fs->n_fatent) { /* Not a last link? */
+ nxt = get_fat(fs, clst); /* Get cluster status */
+ if (nxt == 0) break; /* Empty cluster? */
+ if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
+ if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
+ res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
+ if (res != FR_OK) break;
+ if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
+ fs->free_clust++;
+ fs->fsi_flag = 1;
+ }
+ clst = nxt; /* Next cluster */
+ }
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch or Create a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
+)
+{
+ DWORD cs, ncl, scl;
+
+
+ if (clst == 0) { /* Create a new chain */
+ scl = fs->last_clust; /* Get suggested start point */
+ if (!scl || scl >= fs->n_fatent) scl = 1;
+ }
+ else { /* Stretch the current chain */
+ cs = get_fat(fs, clst); /* Check the cluster status */
+ if (cs < 2) return 1; /* It is an invalid cluster */
+ if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
+ scl = clst;
+ }
+
+ ncl = scl; /* Start cluster */
+ for (;;) {
+ ncl++; /* Next cluster */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
+ ncl = 2;
+ if (ncl > scl) return 0; /* No free cluster */
+ }
+ cs = get_fat(fs, ncl); /* Get the cluster status */
+ if (cs == 0) break; /* Found a free cluster */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
+ return cs;
+ if (ncl == scl) return 0; /* No free cluster */
+ }
+
+ if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
+ return 0xFFFFFFFF;
+ if (clst != 0) { /* Link it to the previous one if needed */
+ if (put_fat(fs, clst, ncl))
+ return 0xFFFFFFFF;
+ }
+
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag = 1;
+ }
+
+ return ncl; /* Return new cluster number */
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Set directory index */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_sdi (
+ FAT_DIR *dj, /* Pointer to directory object */
+ WORD idx /* Directory index number */
+)
+{
+ DWORD clst;
+ WORD ic;
+
+
+ dj->index = idx;
+ clst = dj->sclust;
+ if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
+ return FR_INT_ERR;
+ if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
+ clst = dj->fs->dirbase;
+
+ if (clst == 0) { /* Static table */
+ dj->clust = clst;
+ if (idx >= dj->fs->n_rootdir) /* Index is out of range */
+ return FR_INT_ERR;
+ dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
+ }
+ else { /* Dynamic table */
+ ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
+ while (idx >= ic) { /* Follow cluster chain */
+ clst = get_fat(dj->fs, clst); /* Get next cluster */
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
+ return FR_INT_ERR;
+ idx -= ic;
+ }
+ dj->clust = clst;
+ dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
+ }
+
+ dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
+
+ return FR_OK; /* Seek succeeded */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory index next */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
+ FAT_DIR *dj, /* Pointer to directory object */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
+)
+{
+ DWORD clst;
+ WORD i;
+
+
+ i = dj->index + 1;
+ if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
+ return FR_NO_FILE;
+
+ if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
+ dj->sect++; /* Next sector */
+
+ if (dj->clust == 0) { /* Static table */
+ if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
+ return FR_NO_FILE;
+ }
+ else { /* Dynamic table */
+ if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
+ clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
+ if (clst <= 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
+#if !_FS_READONLY
+ BYTE c;
+ if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
+ clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
+ if (clst == 0) return FR_DENIED; /* No free cluster */
+ if (clst == 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ /* Clean-up stretched table */
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
+ mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
+ dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
+ for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
+ dj->fs->wflag = 1;
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR;
+ dj->fs->winsect++;
+ }
+ dj->fs->winsect -= c; /* Rewind window address */
+#else
+ return FR_NO_FILE; /* Report EOT */
+#endif
+ }
+ dj->clust = clst; /* Initialize data for new cluster */
+ dj->sect = clust2sect(dj->fs, clst);
+ }
+ }
+ }
+
+ dj->index = i;
+ dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
+
+
+static
+int cmp_lfn ( /* 1:Matched, 0:Not matched */
+ WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
+ BYTE *dir /* Pointer to the directory entry containing a part of LFN */
+)
+{
+ int i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ wc = ff_wtoupper(uc); /* Convert it to upper case */
+ if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
+ return 0; /* Not matched */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Repeat until all chars in the entry are checked */
+
+ if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ return 0;
+
+ return 1; /* The part of LFN matched */
+}
+
+
+
+static
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
+ WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
+ BYTE *dir /* Pointer to the directory entry */
+)
+{
+ int i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
+
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Read all character in the entry */
+
+ if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i] = 0;
+ }
+
+ return 1;
+}
+
+
+#if !_FS_READONLY
+static
+void fit_lfn (
+ const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
+ BYTE *dir, /* Pointer to the directory entry */
+ BYTE ord, /* LFN order (1-20) */
+ BYTE sum /* SFN sum */
+)
+{
+ int i, s;
+ WCHAR wc;
+
+
+ dir[LDIR_Chksum] = sum; /* Set check sum */
+ dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
+ dir[LDIR_Type] = 0;
+ ST_WORD(dir+LDIR_FstClusLO, 0);
+
+ i = (ord - 1) * 13; /* Get offset in the LFN buffer */
+ s = wc = 0;
+ do {
+ if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
+ ST_WORD(dir+LfnOfs[s], wc); /* Put it */
+ if (!wc) wc = 0xFFFF; /* Padding chars following last char */
+ } while (++s < 13);
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
+ dir[LDIR_Ord] = ord; /* Set the LFN order */
+}
+
+#endif
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create numbered name */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+void gen_numname (
+ BYTE *dst, /* Pointer to generated SFN */
+ const BYTE *src, /* Pointer to source SFN to be modified */
+ const WCHAR *lfn, /* Pointer to LFN */
+ WORD seq /* Sequence number */
+)
+{
+ BYTE ns[8], c;
+ int i, j;
+
+
+ mem_cpy(dst, src, 11);
+
+ if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
+ do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
+ }
+
+ /* itoa */
+ i = 7;
+ do {
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
+ ns[i] = '~';
+
+ /* Append the number */
+ for (j = 0; j < i && dst[j] != ' '; j++) {
+ if (IsDBCS1(dst[j])) {
+ if (j == i - 1) break;
+ j++;
+ }
+ }
+ do {
+ dst[j++] = (i < 8) ? ns[i++] : ' ';
+ } while (j < 8);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Calculate sum of an SFN */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+BYTE sum_sfn (
+ const BYTE *dir /* Ptr to directory entry */
+)
+{
+ BYTE sum = 0;
+ int n = 11;
+
+ do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+ return sum;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (
+ FAT_DIR *dj /* Pointer to the directory object linked to the file name */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord, sum;
+#endif
+
+ res = dir_sdi(dj, 0); /* Rewind directory object */
+ if (res != FR_OK) return res;
+
+#if _USE_LFN
+ ord = sum = 0xFF;
+#endif
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (dj->lfn) {
+ if (c & 0x40) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= 0xBF; ord = c; /* LFN start order */
+ dj->lfn_idx = dj->index;
+ }
+ /* Check validity of the LFN entry and compare it with given name */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ }
+ } else { /* An SFN entry is found */
+ if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
+ ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+ if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
+ }
+ }
+#else /* Non LFN configuration */
+ if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+FRESULT dir_read (
+ FAT_DIR *dj /* Pointer to the directory object that pointing the entry to be read */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord = 0xFF, sum = 0xFF;
+#endif
+
+ res = FR_NO_FILE;
+ while (dj->sect) {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (c & 0x40) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= 0xBF; ord = c;
+ dj->lfn_idx = dj->index;
+ }
+ /* Check LFN validity and capture it */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ } else { /* An SFN entry is found */
+ if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
+ dj->lfn_idx = 0xFFFF; /* It has no LFN. */
+ break;
+ }
+ }
+#else /* Non LFN configuration */
+ if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ if (res != FR_OK) break;
+ }
+
+ if (res != FR_OK) dj->sect = 0;
+
+ return res;
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
+ FAT_DIR *dj /* Target directory with object name to be created */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN /* LFN configuration */
+ WORD n, ne, is;
+ BYTE sn[12], *fn, sum;
+ WCHAR *lfn;
+
+
+ fn = dj->fn; lfn = dj->lfn;
+ mem_cpy(sn, fn, 12);
+
+ if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
+
+ if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
+ fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
+ for (n = 1; n < 100; n++) {
+ gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
+ res = dir_find(dj); /* Check if the name collides with existing SFN */
+ if (res != FR_OK) break;
+ }
+ if (n == 100) return FR_DENIED; /* Abort if too many collisions */
+ if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
+ fn[NS] = sn[NS]; dj->lfn = lfn;
+ }
+
+ if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
+ for (ne = 0; lfn[ne]; ne++) ;
+ ne = (ne + 25) / 13;
+ } else { /* Otherwise reserve only an SFN entry. */
+ ne = 1;
+ }
+
+ /* Reserve contiguous entries */
+ res = dir_sdi(dj, 0);
+ if (res != FR_OK) return res;
+ n = is = 0;
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir; /* Check the entry status */
+ if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
+ if (n == 0) is = dj->index; /* First index of the contiguous entry */
+ if (++n == ne) break; /* A contiguous entry that required count is found */
+ } else {
+ n = 0; /* Not a blank entry. Restart to search */
+ }
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+
+ if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
+ res = dir_sdi(dj, is);
+ if (res == FR_OK) {
+ sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
+ ne--;
+ do { /* Store LFN entries in bottom first */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
+ dj->fs->wflag = 1;
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK && --ne);
+ }
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, 0);
+ if (res == FR_OK) {
+ do { /* Find a blank entry for the SFN */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir;
+ if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+ }
+#endif
+
+ if (res == FR_OK) { /* Initialize the SFN entry */
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ dir = dj->dir;
+ mem_set(dir, 0, 32); /* Clean the entry */
+ mem_cpy(dir, dj->fn, 11); /* Put SFN */
+#if _USE_LFN
+ dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
+#endif
+ dj->fs->wflag = 1;
+ }
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY && !_FS_MINIMIZE
+static
+FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
+ FAT_DIR *dj /* Directory object pointing the entry to be removed */
+)
+{
+ FRESULT res;
+#if _USE_LFN /* LFN configuration */
+ WORD i;
+
+ i = dj->index; /* SFN index */
+ res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ if (res == FR_OK) {
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, dj->index);
+ if (res == FR_OK) {
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ }
+ }
+#endif
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a segment and create the object name in directory form */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name (
+ FAT_DIR *dj, /* Pointer to the directory object */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
+)
+{
+#ifdef _EXCVT
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
+#endif
+
+#if _USE_LFN /* LFN configuration */
+ BYTE b, cf;
+ WCHAR w, *lfn;
+ int i, ni, si, di;
+ const TCHAR *p;
+
+ /* Create LFN in Unicode */
+ si = di = 0;
+ p = *path;
+ lfn = dj->lfn;
+ for (;;) {
+ w = p[si++]; /* Get a character */
+ if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
+ if (di >= _MAX_LFN) /* Reject too long name */
+ return FR_INVALID_NAME;
+#if !_LFN_UNICODE
+ w &= 0xFF;
+ if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
+ b = p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(b)) /* Reject invalid code for DBC */
+ return FR_INVALID_NAME;
+ w = (w << 8) + b;
+ }
+ w = ff_convert(w, 1); /* Convert OEM to Unicode */
+ if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+ if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
+ return FR_INVALID_NAME;
+ lfn[di++] = w; /* Store the Unicode char */
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+#if _FS_RPATH
+ if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
+ (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
+ lfn[di] = 0;
+ for (i = 0; i < 11; i++)
+ dj->fn[i] = (i < di) ? '.' : ' ';
+ dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
+ return FR_OK;
+ }
+#endif
+ while (di) { /* Strip trailing spaces and dots */
+ w = lfn[di - 1];
+ if (w != ' ' && w != '.') break;
+ di--;
+ }
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
+
+ lfn[di] = 0; /* LFN is created */
+
+ /* Create SFN in directory form */
+ mem_set(dj->fn, ' ', 11);
+ for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
+ if (si) cf |= NS_LOSS | NS_LFN;
+ while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
+
+ b = i = 0; ni = 8;
+ for (;;) {
+ w = lfn[si++]; /* Get an LFN char */
+ if (!w) break; /* Break on end of the LFN */
+ if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
+ cf |= NS_LOSS | NS_LFN; continue;
+ }
+
+ if (i >= ni || si == di) { /* Extension or end of SFN */
+ if (ni == 11) { /* Long extension */
+ cf |= NS_LOSS | NS_LFN; break;
+ }
+ if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
+ if (si > di) break; /* No extension */
+ si = di; i = 8; ni = 11; /* Enter extension section */
+ b <<= 2; continue;
+ }
+
+ if (w >= 0x80) { /* Non ASCII char */
+#ifdef _EXCVT
+ w = ff_convert(w, 0); /* Unicode -> OEM code */
+ if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+#else
+ w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
+#endif
+ cf |= NS_LFN; /* Force create LFN entry */
+ }
+
+ if (_DF1S && w >= 0x100) { /* Double byte char */
+ if (i >= ni - 1) {
+ cf |= NS_LOSS | NS_LFN; i = ni; continue;
+ }
+ dj->fn[i++] = (BYTE)(w >> 8);
+ } else { /* Single byte char */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
+ } else {
+ if (IsUpper(w)) { /* ASCII large capital */
+ b |= 2;
+ } else {
+ if (IsLower(w)) { /* ASCII small capital */
+ b |= 1; w -= 0x20;
+ }
+ }
+ }
+ }
+ dj->fn[i++] = (BYTE)w;
+ }
+
+ if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
+ cf |= NS_LFN;
+ if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
+ if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
+ if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
+ }
+
+ dj->fn[NS] = cf; /* SFN is created */
+
+ return FR_OK;
+
+
+#else /* Non-LFN configuration */
+ BYTE b, c, d, *sfn;
+ int ni, si, i;
+ const char *p;
+
+ /* Create file name in directory form */
+ sfn = dj->fn;
+ mem_set(sfn, ' ', 11);
+ si = i = b = 0; ni = 8;
+ p = *path;
+#if _FS_RPATH
+ if (p[si] == '.') { /* Is this a dot entry? */
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c != '.' || si >= 3) break;
+ sfn[i++] = c;
+ }
+ if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+ *path = &p[si]; /* Return pointer to the next segment */
+ sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
+ return FR_OK;
+ }
+#endif
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
+ if (c == '.' || i >= ni) {
+ if (ni != 8 || c != '.') return FR_INVALID_NAME;
+ i = 8; ni = 11;
+ b <<= 2; continue;
+ }
+ if (c >= 0x80) { /* Extended char */
+#ifdef _EXCVT
+ c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
+#else
+ b |= 3; /* Eliminate NT flag if extended char is exist */
+#if !_DF1S /* ASCII only cfg */
+ return FR_INVALID_NAME;
+#endif
+#endif
+ }
+ if (IsDBCS1(c)) { /* DBC 1st byte? */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
+ return FR_INVALID_NAME;
+ sfn[i++] = c;
+ sfn[i++] = d;
+ } else { /* Single byte code */
+ if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
+ return FR_INVALID_NAME;
+ if (IsUpper(c)) { /* ASCII large capital? */
+ b |= 2;
+ } else {
+ if (IsLower(c)) { /* ASCII small capital? */
+ b |= 1; c -= 0x20;
+ }
+ }
+ sfn[i++] = c;
+ }
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
+ if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
+ if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
+
+ sfn[NS] = c; /* Store NT flag, File name is created */
+
+ return FR_OK;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+void get_fileinfo ( /* No return code */
+ FAT_DIR *dj, /* Pointer to the directory object */
+ FILINFO *fno /* Pointer to the file information to be filled */
+)
+{
+ int i;
+ BYTE nt, *dir;
+ TCHAR *p, c;
+
+
+ p = fno->fname;
+ if (dj->sect) {
+ dir = dj->dir;
+ nt = dir[DIR_NTres]; /* NT flag */
+ for (i = 0; i < 8; i++) { /* Copy name body */
+ c = dir[i];
+ if (c == ' ') break;
+ if (c == 0x05) c = (TCHAR)0xE5;
+ if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i + 1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ if (dir[8] != ' ') { /* Copy name extension */
+ *p++ = '.';
+ for (i = 8; i < 11; i++) {
+ c = dir[i];
+ if (c == ' ') break;
+ if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i + 1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ }
+ fno->fattrib = dir[DIR_Attr]; /* Attribute */
+ fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
+ fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
+ fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
+ }
+ *p = 0;
+
+#if _USE_LFN
+ if (fno->lfname) {
+ TCHAR *tp = fno->lfname;
+ WCHAR w, *lfn;
+
+ i = 0;
+ if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
+ lfn = dj->lfn;
+ while ((w = *lfn++) != 0) { /* Get an LFN char */
+#if !_LFN_UNICODE
+ w = ff_convert(w, 0); /* Unicode -> OEM conversion */
+ if (!w) { i = 0; break; } /* Could not convert, no LFN */
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
+ tp[i++] = (TCHAR)(w >> 8);
+#endif
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
+ tp[i++] = (TCHAR)w;
+ }
+ }
+ tp[i] = 0; /* Terminator */
+ }
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
+ FAT_DIR *dj, /* Directory object to return last directory and found object */
+ const TCHAR *path /* Full-path string to find a file or directory */
+)
+{
+ FRESULT res;
+ BYTE *dir, ns;
+
+
+#if _FS_RPATH
+ if (*path == '/' || *path == '\\') { /* There is a heading separator */
+ path++; dj->sclust = 0; /* Strip it and start from the root dir */
+ } else { /* No heading separator */
+ dj->sclust = dj->fs->cdir; /* Start from the current dir */
+ }
+#else
+ if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
+ path++;
+ dj->sclust = 0; /* Start from the root dir */
+#endif
+
+ if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
+ res = dir_sdi(dj, 0);
+ dj->dir = 0;
+
+ } else { /* Follow path */
+ for (;;) {
+ res = create_name(dj, &path); /* Get a segment */
+ if (res != FR_OK) break;
+ res = dir_find(dj); /* Find it */
+ ns = *(dj->fn+NS);
+ if (res != FR_OK) { /* Failed to find the object */
+ if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
+ /* Object not found */
+ if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
+ dj->sclust = 0; dj->dir = 0; /* It is the root dir */
+ res = FR_OK;
+ if (!(ns & NS_LAST)) continue;
+ } else { /* Could not find the object */
+ if (!(ns & NS_LAST)) res = FR_NO_PATH;
+ }
+ break;
+ }
+ if (ns & NS_LAST) break; /* Last segment match. Function completed. */
+ dir = dj->dir; /* There is next segment. Follow the sub directory */
+ if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
+ res = FR_NO_PATH; break;
+ }
+ dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ }
+ }
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load boot record and check if it is an FAT boot record */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
+ FATFS *fs, /* File system object */
+ DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
+)
+{
+ if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ return 3;
+ if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
+ return 2;
+
+ if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+ return 0;
+ if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
+ return 0;
+
+ return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Make sure that the file system is valid */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
+ const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
+ FATFS **rfs, /* Pointer to pointer to the found file system object */
+ BYTE chk_wp /* !=0: Check media write protection for write access */
+)
+{
+ BYTE fmt, b, *tbl;
+ UINT vol;
+ DSTATUS stat;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
+ FATFS *fs;
+
+ /* Get logical drive number from the path name */
+ vol = p[0] - '0'; /* Is there a drive number? */
+ if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
+ p += 2; *path = p; /* Return pointer to the path name */
+ } else { /* No drive number is given */
+#if _FS_RPATH
+ vol = Drive; /* Use current drive */
+#else
+ vol = 0; /* Use drive 0 */
+#endif
+ }
+
+ /* Check if the logical drive is valid or not */
+ if (vol >= _DRIVES) /* Is the drive number valid? */
+ return FR_INVALID_DRIVE;
+ *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (fs->fs_type) { /* If the logical drive has been mounted */
+ stat = disk_status(fs->drv);
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ return FR_OK; /* The file system object is valid */
+ }
+ }
+
+ /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
+
+ fs->fs_type = 0; /* Clear the file system object */
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
+ if (stat & STA_NOINIT) /* Check if the drive is ready */
+ return FR_NOT_READY;
+#if _MAX_SS != 512 /* Get disk sector size if needed */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_NO_FILESYSTEM;
+#endif
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ /* Search FAT partition on the drive (Supports only generic partitionings, FDISK and SFD) */
+ fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
+ if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
+ /* Check the partition listed in top of the partition table */
+ tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
+ if (tbl[4]) { /* Is the partition existing? */
+ bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
+ fmt = check_fs(fs, bsect); /* Check the partition */
+ }
+ }
+ if (fmt == 3) return FR_DISK_ERR;
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+
+ /* Following code initializes the file system object */
+
+ if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
+ return FR_NO_FILESYSTEM;
+
+ fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
+ if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
+ fs->fsize = fasize;
+
+ fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
+ if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
+ fasize *= b; /* Number of sectors for FAT area */
+
+ fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
+ if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be 1,2,4...128) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
+ tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
+ if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
+
+ nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
+ if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
+
+ /* Determine the FAT sub type */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / 32); /* RSV+FAT+DIR */
+ if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
+ if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ fmt = FS_FAT12;
+ if (nclst >= MIN_FAT16) fmt = FS_FAT16;
+ if (nclst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Boundaries and Limits */
+ fs->n_fatent = nclst + 2; /* Number of FAT entries */
+ fs->database = bsect + sysect; /* Data start sector */
+ fs->fatbase = bsect + nrsv; /* FAT start sector */
+ if (fmt == FS_FAT32) {
+ if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
+ fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
+ szbfat = fs->n_fatent * 4; /* (Required FAT size) */
+ } else {
+ if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
+ fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
+ szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
+ fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+ }
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (FAT size must not be less than FAT sectors */
+ return FR_NO_FILESYSTEM;
+
+#if !_FS_READONLY
+ /* Initialize cluster allocation information */
+ fs->free_clust = 0xFFFFFFFF;
+ fs->last_clust = 0;
+
+ /* Get fsinfo if available */
+ if (fmt == FS_FAT32) {
+ fs->fsi_flag = 0;
+ fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
+ if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
+ LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
+ LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
+ fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
+ fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
+ }
+ }
+#endif
+ fs->fs_type = fmt; /* FAT sub-type */
+ fs->id = ++Fsid; /* File system mount ID */
+ fs->winsect = 0; /* Invalidate sector cache */
+ fs->wflag = 0;
+#if _FS_RPATH
+ fs->cdir = 0; /* Current directory (root dir) */
+#endif
+#if _FS_SHARE /* Clear file lock semaphores */
+ for (vol = 0; vol < _FS_SHARE; vol++)
+ fs->flsem[vol].ctr = 0;
+#endif
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/dir object is valid or not */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
+ FATFS *fs, /* Pointer to the file system object */
+ WORD id /* Member id of the target object to be checked */
+)
+{
+ if (!fs || !fs->fs_type || fs->id != id)
+ return FR_INVALID_OBJECT;
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (disk_status(fs->drv) & STA_NOINIT)
+ return FR_NOT_READY;
+
+ return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Public Functions
+
+--------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Logical Drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+ BYTE vol, /* Logical drive number to be mounted/unmounted */
+ FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
+)
+{
+ FATFS *rfs;
+
+
+ if (vol >= _DRIVES) /* Check if the drive number is valid */
+ return FR_INVALID_DRIVE;
+ rfs = FatFs[vol]; /* Get current fs object */
+
+ if (rfs) {
+#if _FS_REENTRANT /* Discard sync object of the current volume */
+ if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
+#endif
+ rfs->fs_type = 0; /* Clear old fs object */
+ }
+
+ if (fs) {
+ fs->fs_type = 0; /* Clear new fs object */
+#if _FS_REENTRANT /* Create sync object for the new volume */
+ if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
+#endif
+ }
+ FatFs[vol] = fs; /* Register new fs object */
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+ FAT_FIL *fp, /* Pointer to the blank file object */
+ const TCHAR *path, /* Pointer to the file name */
+ BYTE mode /* Access mode and file open mode flags */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ fp->fs = 0; /* Clear file object */
+
+#if !_FS_READONLY
+ mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
+ res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
+#else
+ mode &= FA_READ;
+ res = chk_mounted(&path, &dj.fs, 0);
+#endif
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
+
+#if !_FS_READONLY /* R/W configuration */
+ if (res == FR_OK) {
+ if (!dir) /* Current dir itself */
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+#endif
+ }
+ /* Create or Open a file */
+ if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+ DWORD dw, cl;
+
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_SHARE
+ res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
+ res = dir_register(&dj);
+#endif
+ mode |= FA_CREATE_ALWAYS;
+ dir = dj.dir; /* New entry */
+ }
+ else { /* Any object is already existing */
+ if (mode & FA_CREATE_NEW) { /* Cannot create new */
+ res = FR_EXIST;
+ } else {
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = get_fattime(); /* Created time */
+ ST_DWORD(dir+DIR_CrtTime, dw);
+ dir[DIR_Attr] = 0; /* Reset attribute */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
+ ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
+ ST_WORD(dir+DIR_FstClusLO, 0);
+ dj.fs->wflag = 1;
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
+ }
+ }
+ }
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
+ mode |= FA__WRITTEN; /* Set file changed flag */
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#endif
+ }
+
+#else /* R/O configuration */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (!dir) { /* Current dir itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
+ }
+#endif
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->org_clust = /* File start cluster */
+ ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* No cluster link map table */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+ FAT_FIL *fp, /* Pointer to the file object */
+ void *buff, /* Pointer to data buffer */
+ UINT btr, /* Number of bytes to read */
+ UINT *br /* Pointer to number of bytes read */
+)
+{
+ FRESULT res;
+ DWORD clst, sect, remain;
+ UINT rcnt, cc;
+ BYTE csect, *rbuff = (BYTE*)buff;
+
+
+ *br = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr; /* Repeat until all data transferred */
+ rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if _FS_TINY
+ if (fp->fs->wflag && fp->fs->winsect - sect < cc)
+ mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
+#else
+ if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
+ mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
+#endif
+#endif
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
+ if (rcnt > btr) rcnt = btr;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#else
+ mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#endif
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+ FAT_FIL *fp, /* Pointer to the file object */
+ const void *buff, /* Pointer to the data to be written */
+ UINT btw, /* Number of bytes to write */
+ UINT *bw /* Pointer to number of bytes written */
+)
+{
+ FRESULT res;
+ DWORD clst, sect;
+ UINT wcnt, cc;
+ const BYTE *wbuff = (const BYTE*)buff;
+ BYTE csect;
+
+
+ *bw = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
+
+ for ( ; btw; /* Repeat until all data transferred */
+ wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->org_clust; /* Follow from the origin */
+ if (clst == 0) /* When there is no cluster chain, */
+ fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+ clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
+ }
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+#if _FS_TINY
+ if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
+ ABORT(fp->fs, FR_DISK_ERR);
+#else
+ if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if _FS_TINY
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->fs->wflag = 0;
+ }
+#else
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if _FS_TINY
+ if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
+ if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
+ fp->fs->winsect = sect;
+ }
+#else
+ if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (fp->fptr < fp->fsize &&
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
+ if (wcnt > btw) wcnt = btw;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->fs->wflag = 1;
+#else
+ mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->flag |= FA__DIRTY;
+#endif
+ }
+
+ if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
+ fp->flag |= FA__WRITTEN; /* Set file changed flag */
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+ FAT_FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD tim;
+ BYTE *dir;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
+#if !_FS_TINY /* Write-back dirty buffer */
+ if (fp->flag & FA__DIRTY) {
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ LEAVE_FF(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ /* Update the directory entry */
+ res = move_window(fp->fs, fp->dir_sect);
+ if (res == FR_OK) {
+ dir = fp->dir_ptr;
+ dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
+ ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
+ ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
+ ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
+ tim = get_fattime(); /* Update updated time */
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ fp->flag &= ~FA__WRITTEN;
+ fp->fs->wflag = 1;
+ res = sync(fp->fs);
+ }
+ }
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+ FAT_FIL *fp /* Pointer to the file object to be closed */
+)
+{
+ FRESULT res;
+
+#if _FS_READONLY
+ FATFS *fs = fp->fs;
+ res = validate(fs, fp->id);
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ LEAVE_FF(fs, res);
+
+#else
+ res = f_sync(fp); /* Flush cached data */
+#if _FS_SHARE
+ if (res == FR_OK) { /* Decrement open counter */
+#if _FS_REENTRANT
+ res = validate(fp->fs, fp->id);
+ if (res == FR_OK) {
+ res = dec_lock(fp->fs, fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
+#else
+ res = dec_lock(fp->fs, fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ return res;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Current Drive/Directory */
+/*-----------------------------------------------------------------------*/
+
+#if _FS_RPATH
+
+FRESULT f_chdrive (
+ BYTE drv /* Drive number */
+)
+{
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+
+ Drive = drv;
+
+ return FR_OK;
+}
+
+
+
+
+FRESULT f_chdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ dir = dj.dir; /* Pointer to the entry */
+ if (!dir) {
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ else
+ res = FR_NO_PATH; /* Reached but a file */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+#endif
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+ FAT_FIL *fp, /* Pointer to the file object */
+ DWORD ofs /* File pointer from top of file */
+)
+{
+ FRESULT res;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
+ BYTE csc;
+
+ tlen = *tbl++;
+ if (ofs == CREATE_LINKMAP) { /* Create link map table */
+ cl = fp->org_clust;
+ if (cl) {
+ do {
+ if (tlen < 4) { /* Not enough table items */
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ tcl = cl; ncl = 0;
+ do { /* Get a fragment and store the top and length */
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ *tbl++ = ncl; *tbl++ = tcl;
+ tlen -= 2;
+ } while (cl < fp->fs->n_fatent);
+ }
+ *tbl = 0; /* Terminate table */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ dsc = (ofs - 1) / SS(fp->fs);
+ cl = dsc / fp->fs->csize;
+ for (;;) {
+ ncl = *tbl++;
+ if (!ncl) ABORT(fp->fs, FR_INT_ERR);
+ if (cl < ncl) break;
+ cl -= ncl; tbl++;
+ }
+ fp->curr_clust = cl + *tbl;
+ csc = (BYTE)(dsc & (fp->fs->csize - 1));
+ dsc = clust2sect(fp->fs, fp->curr_clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += csc;
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = dsc;
+ }
+ }
+ }
+ } else
+#endif
+
+ /* Normal Seek */
+ {
+ DWORD clst, bcs, nsect, ifptr;
+
+ if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
+#if !_FS_READONLY
+ && !(fp->flag & FA_WRITE)
+#endif
+ ) ofs = fp->fsize;
+
+ ifptr = fp->fptr;
+ fp->fptr = nsect = 0;
+ if (ofs) {
+ bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
+ if (ifptr > 0 &&
+ (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+ fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
+ ofs -= fp->fptr;
+ clst = fp->curr_clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->org_clust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->org_clust = clst;
+ }
+#endif
+ fp->curr_clust = clst;
+ }
+ if (clst != 0) {
+ while (ofs > bcs) { /* Cluster following loop */
+#if !_FS_READONLY
+ if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
+ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
+ if (clst == 0) { /* When disk gets full, clip file size */
+ ofs = bcs; break;
+ }
+ } else
+#endif
+ clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
+ fp->curr_clust = clst;
+ fp->fptr += bcs;
+ ofs -= bcs;
+ }
+ fp->fptr += ofs;
+ if (ofs % SS(fp->fs)) {
+ nsect = clust2sect(fp->fs, clst); /* Current sector */
+ if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+ nsect += ofs / SS(fp->fs);
+ }
+ }
+ }
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = nsect;
+ }
+#if !_FS_READONLY
+ if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
+ fp->fsize = fp->fptr;
+ fp->flag |= FA__WRITTEN;
+ }
+#endif
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directroy Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+ FAT_DIR *dj, /* Pointer to directory object to create */
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj->fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(*dj);
+ res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ dir = dj->dir;
+ if (dir) { /* It is not the current dir */
+ if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
+ dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ } else { /* The object is not a directory */
+ res = FR_NO_PATH;
+ }
+ }
+ if (res == FR_OK) {
+ dj->id = dj->fs->id;
+ res = dir_sdi(dj, 0); /* Rewind dir */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entry in Sequense */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+ FAT_DIR *dj, /* Pointer to the open directory object */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ DEF_NAMEBUF;
+
+
+ res = validate(dj->fs, dj->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (!fno) {
+ res = dir_sdi(dj, 0);
+ } else {
+ INIT_BUF(*dj);
+ res = dir_read(dj);
+ if (res == FR_NO_FILE) {
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ if (res == FR_OK) { /* A valid entry is found */
+ get_fileinfo(dj, fno); /* Get the object information */
+ res = dir_next(dj, 0); /* Increment index for next */
+ if (res == FR_NO_FILE) {
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ }
+ FREE_BUF();
+ }
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+ const TCHAR *path, /* Pointer to the file path */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
+ get_fileinfo(&dj, fno);
+ else /* It is root dir */
+ res = FR_INVALID_NAME;
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+ const TCHAR *path, /* Pointer to the logical drive number (root dir) */
+ DWORD *nclst, /* Pointer to the variable to return number of free clusters */
+ FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
+)
+{
+ FRESULT res;
+ DWORD n, clst, sect, stat;
+ UINT i;
+ BYTE fat, *p;
+
+
+ /* Get drive number */
+ res = chk_mounted(&path, fatfs, 0);
+ if (res == FR_OK) {
+ /* If free_clust is valid, return it without full cluster scan */
+ if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
+ *nclst = (*fatfs)->free_clust;
+ } else {
+ /* Get number of free clusters */
+ fat = (*fatfs)->fs_type;
+ n = 0;
+ if (fat == FS_FAT12) {
+ clst = 2;
+ do {
+ stat = get_fat(*fatfs, clst);
+ if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+ if (stat == 1) { res = FR_INT_ERR; break; }
+ if (stat == 0) n++;
+ } while (++clst < (*fatfs)->n_fatent);
+ } else {
+ clst = (*fatfs)->n_fatent;
+ sect = (*fatfs)->fatbase;
+ i = 0; p = 0;
+ do {
+ if (!i) {
+ res = move_window(*fatfs, sect++);
+ if (res != FR_OK) break;
+ p = (*fatfs)->win;
+ i = SS(*fatfs);
+ }
+ if (fat == FS_FAT16) {
+ if (LD_WORD(p) == 0) n++;
+ p += 2; i -= 2;
+ } else {
+ if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
+ p += 4; i -= 4;
+ }
+ } while (--clst);
+ }
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
+ }
+ LEAVE_FF(*fatfs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+ FAT_FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD ncl;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__ERROR) { /* Check abort flag */
+ res = FR_INT_ERR;
+ } else {
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK) {
+ if (fp->fsize > fp->fptr) {
+ fp->fsize = fp->fptr; /* Set file size to current R/W point */
+ fp->flag |= FA__WRITTEN;
+ if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
+ res = remove_chain(fp->fs, fp->org_clust);
+ fp->org_clust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->curr_clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
+ }
+ }
+ if (res != FR_OK) fp->flag |= FA__ERROR;
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+ const TCHAR *path /* Pointer to the file or directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj, sdj;
+ BYTE *dir;
+ DWORD dclst;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME; /* Cannot remove dot entry */
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
+#endif
+ if (res == FR_OK) { /* The object is accessible */
+ dir = dj.dir;
+ if (!dir) {
+ res = FR_INVALID_NAME; /* Cannot remove the start directory */
+ } else {
+ if (dir[DIR_Attr] & AM_RDO)
+ res = FR_DENIED; /* Cannot remove R/O object */
+ }
+ dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
+ if (dclst < 2) {
+ res = FR_INT_ERR;
+ } else {
+ mem_cpy(&sdj, &dj, sizeof(FAT_DIR)); /* Check if the sub-dir is empty or not */
+ sdj.sclust = dclst;
+ res = dir_sdi(&sdj, 2); /* Exclude dot entries */
+ if (res == FR_OK) {
+ res = dir_read(&sdj);
+ if (res == FR_OK /* Not empty dir */
+#if _FS_RPATH
+ || dclst == sdj.fs->cdir /* Current dir */
+#endif
+ ) res = FR_DENIED;
+ if (res == FR_NO_FILE) res = FR_OK; /* Empty */
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&dj); /* Remove the directory entry */
+ if (res == FR_OK) {
+ if (dclst) /* Remove the cluster chain if exist */
+ res = remove_chain(dj.fs, dclst);
+ if (res == FR_OK) res = sync(dj.fs);
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir, n;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
+ if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_NO_FILE) { /* Can create a new directory */
+ dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
+ res = FR_OK;
+ if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
+ if (dcl == 1) res = FR_INT_ERR;
+ if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (res == FR_OK) /* Flush FAT */
+ res = move_window(dj.fs, 0);
+ if (res == FR_OK) { /* Initialize the new directory table */
+ dsc = clust2sect(dj.fs, dcl);
+ dir = dj.fs->win;
+ mem_set(dir, 0, SS(dj.fs));
+ mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
+ dir[DIR_Name] = '.';
+ dir[DIR_Attr] = AM_DIR;
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ ST_WORD(dir+DIR_FstClusLO, dcl);
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ mem_cpy(dir+32, dir, 32); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_WORD(dir+32+DIR_FstClusLO, pcl);
+ ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
+ for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
+ dj.fs->winsect = dsc++;
+ dj.fs->wflag = 1;
+ res = move_window(dj.fs, 0);
+ if (res != FR_OK) break;
+ mem_set(dir, 0, SS(dj.fs));
+ }
+ }
+ if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
+ if (res != FR_OK) {
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ } else {
+ dir = dj.dir;
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
+ ST_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Attribute */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+ const TCHAR *path, /* Pointer to the file path */
+ BYTE value, /* Attribute bits */
+ BYTE mask /* Attribute mask to change */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Is it a root directory? */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub directory */
+ mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
+ dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Root directory */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub-directory */
+ ST_WORD(dir+DIR_WrtTime, fno->ftime);
+ ST_WORD(dir+DIR_WrtDate, fno->fdate);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename File/Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
+)
+{
+ FRESULT res;
+ FAT_DIR djo, djn;
+ BYTE buf[21], *dir;
+ DWORD dw;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path_old, &djo.fs, 1);
+ if (res == FR_OK) {
+ djn.fs = djo.fs;
+ INIT_BUF(djo);
+ res = follow_path(&djo, path_old); /* Check old object */
+ if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+ if (res == FR_OK) { /* Old object is found */
+ if (!djo.dir) { /* Is root dir? */
+ res = FR_NO_FILE;
+ } else {
+ mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
+ mem_cpy(&djn, &djo, sizeof(FAT_DIR)); /* Check new object */
+ res = follow_path(&djn, path_new);
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
+/* Start critical section that any interruption or error can cause cross-link */
+ res = dir_register(&djn); /* Register the new entry */
+ if (res == FR_OK) {
+ dir = djn.dir; /* Copy object information except for name */
+ mem_cpy(dir+13, buf+2, 19);
+ dir[DIR_Attr] = buf[0] | AM_ARC;
+ djo.fs->wflag = 1;
+ if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
+ dw = clust2sect(djn.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+32; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_WORD(dir+DIR_FstClusLO, dw);
+ ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
+ }
+/* End critical section */
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(djo.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly (available on only tiny cfg) */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+ FAT_FIL *fp, /* Pointer to the file object */
+ UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+ UINT btr, /* Number of bytes to forward */
+ UINT *bf /* Pointer to number of bytes forwarded */
+)
+{
+ FRESULT res;
+ DWORD remain, clst, sect;
+ UINT rcnt;
+ BYTE csect;
+
+
+ *bf = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check error flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
+ fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+ }
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ if (move_window(fp->fs, sect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->dsect = sect;
+ rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
+ if (rcnt > btr) rcnt = btr;
+ rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
+ if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create File System on the Drive */
+/*-----------------------------------------------------------------------*/
+#define N_ROOTDIR 512 /* Multiple of 32 */
+#define N_FATS 1 /* 1 or 2 */
+
+
+FRESULT f_mkfs (
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
+)
+{
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n;
+ UINT as, i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
+ FATFS *fs;
+ DSTATUS stat;
+
+
+ /* Check mounted drive and clear work area */
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+ fs = FatFs[drv];
+ if (!fs) return FR_NOT_ENABLED;
+ fs->fs_type = 0;
+ drv = LD2PD(drv);
+
+ /* Get disk statics */
+ stat = disk_initialize(drv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_DISK_ERR;
+#endif
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
+ fmt = FS_FAT12;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Determine offset and size of FAT structure */
+ if (fmt == FS_FAT32) {
+ n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+ n_rsv = 32;
+ n_dir = 0;
+ } else {
+ n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
+ n_fat = (n_fat + SS(fs) - 1) / SS(fs);
+ n_rsv = 1;
+ n_dir = N_ROOTDIR * 32UL / SS(fs);
+ }
+ b_fat = b_vol + n_rsv; /* FAT area start sector */
+ b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
+ b_data = b_dir + n_dir; /* Data area start sector */
+ if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
+
+ /* Align data start sector to erase block boundary (for flash memory media) */
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
+ if (!n || n > 32768) return FR_MKFS_ABORTED;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
+ /* b_dir and b_data are no longer used below */
+
+ /* Determine number of cluster and final check of validity of the FAT sub-type */
+ n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
+ if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
+ || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
+ return FR_MKFS_ABORTED;
+
+ /* Create partition table if required */
+ if (sfd == 1) {
+ md = 0xF0;
+ } else {
+ DWORD n_disk = b_vol + n_vol;
+
+ mem_set(fs->win, 0, SS(fs));
+ tbl = fs->win+MBR_Table;
+ ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
+ if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
+ n_disk = n_disk / 63 / 255;
+ tbl[7] = (BYTE)n_disk;
+ tbl[6] = (BYTE)((n_disk >> 2) | 63);
+ } else {
+ ST_WORD(&tbl[6], 0xFFFF);
+ }
+ tbl[5] = 254;
+ if (fmt != FS_FAT32) /* System ID */
+ tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
+ else
+ tbl[4] = 0x0c;
+ ST_DWORD(tbl+8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
+ ST_WORD(tbl+64, 0xAA55); /* Signature */
+ if (disk_write(drv, fs->win, 0, 1) != RES_OK)
+ return FR_DISK_ERR;
+ md = 0xF8;
+ }
+
+ /* Create VBR */
+ tbl = fs->win; /* Clear buffer */
+ mem_set(tbl, 0, SS(fs));
+ ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
+ as = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, as);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, as);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
+ } else {
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
+ }
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = get_fattime(); /* Use current time as VSN */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl+BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
+ ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume label, FAT signature */
+ } else {
+ ST_DWORD(tbl+BS_VolID, n); /* VSN */
+ ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
+ return FR_DISK_ERR;
+ if (fmt == FS_FAT32) /* Backup (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
+
+ /* Initialize FAT area */
+ for (i = 0; i < N_FATS; i++) {
+ mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ n = md; /* Media descriptor byte */
+ if (fmt != FS_FAT32) {
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
+ } else {
+ n |= 0x0FFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl+4, 0x0FFFFFFF);
+ ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
+ }
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+ }
+
+ /* Initialize root directory */
+ n = (fmt == FS_FAT32) ? as : n_dir;
+ while (n--) {
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+
+ /* Create FSInfo record if needed */
+ if (fmt == FS_FAT32) {
+ ST_WORD(tbl+BS_55AA, 0xAA55);
+ ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
+ ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
+ ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
+ ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
+ }
+
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+#endif /* _USE_MKFS && !_FS_READONLY */
+
+
+
+
+#if _USE_STRFUNC
+/*-----------------------------------------------------------------------*/
+/* Get a string from the file */
+/*-----------------------------------------------------------------------*/
+TCHAR* f_gets (
+ TCHAR* buff, /* Pointer to the string buffer to read */
+ int len, /* Size of string buffer (characters) */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
+ UINT rc;
+
+
+ while (n < len - 1) { /* Read bytes until buffer gets filled */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break; /* Break on EOF or error */
+ c = s[0];
+#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
+ if (c >= 0x80) {
+ if (c < 0xC0) continue; /* Skip stray trailer */
+ if (c < 0xE0) { /* Two-byte sequense */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break;
+ c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
+ if (c < 0x80) c = '?';
+ } else {
+ if (c < 0xF0) { /* Three-byte sequense */
+ f_read(fil, s, 2, &rc);
+ if (rc != 2) break;
+ c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
+ if (c < 0x800) c = '?';
+ } else { /* Reject four-byte sequense */
+ c = '?';
+ }
+ }
+ }
+#endif
+#if _USE_STRFUNC >= 2
+ if (c == '\r') continue; /* Strip '\r' */
+#endif
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
+ }
+ *p = 0;
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
+}
+
+
+
+#if !_FS_READONLY
+#include <stdarg.h>
+/*-----------------------------------------------------------------------*/
+/* Put a character to the file */
+/*-----------------------------------------------------------------------*/
+int f_putc (
+ TCHAR c, /* A character to be output */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ UINT bw, btw;
+ BYTE s[3];
+
+
+#if _USE_STRFUNC >= 2
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+#endif
+
+#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
+ if (c < 0x80) { /* 7-bit */
+ s[0] = (BYTE)c;
+ btw = 1;
+ } else {
+ if (c < 0x800) { /* 11-bit */
+ s[0] = (BYTE)(0xC0 | (c >> 6));
+ s[1] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 2;
+ } else { /* 16-bit */
+ s[0] = (BYTE)(0xE0 | (c >> 12));
+ s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
+ s[2] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 3;
+ }
+ }
+#else /* Write the character without conversion */
+ s[0] = (BYTE)c;
+ btw = 1;
+#endif
+ f_write(fil, s, btw, &bw); /* Write the char to the file */
+ return (bw == btw) ? 1 : EOF; /* Return the result */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file */
+/*-----------------------------------------------------------------------*/
+int f_puts (
+ const TCHAR* str, /* Pointer to the string to be output */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ int n;
+
+
+ for (n = 0; *str; str++, n++) {
+ if (f_putc(*str, fil) == EOF) return EOF;
+ }
+ return n;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a formatted string to the file */
+/*-----------------------------------------------------------------------*/
+int f_printf (
+ FAT_FIL* fil, /* Pointer to the file object */
+ const TCHAR* str, /* Pointer to the format string */
+ ... /* Optional arguments... */
+)
+{
+ va_list arp;
+ BYTE f, r;
+ UINT i, w;
+ ULONG val;
+ TCHAR c, d, s[16];
+ int res, cc;
+
+
+ va_start(arp, str);
+
+ for (cc = res = 0; cc != EOF; res += cc) {
+ c = *str++;
+ if (c == 0) break; /* End of string */
+ if (c != '%') { /* Non escape character */
+ cc = f_putc(c, fil);
+ if (cc != EOF) cc = 1;
+ continue;
+ }
+ w = f = 0;
+ c = *str++;
+ if (c == '0') { /* Flag: '0' padding */
+ f = 1; c = *str++;
+ }
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
+ c = *str++;
+ }
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
+ f |= 2; c = *str++;
+ }
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
+ case 'C' : /* Character */
+ cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
+ case 'B' : /* Binary */
+ r = 2; break;
+ case 'O' : /* Octal */
+ r = 8; break;
+ case 'D' : /* Signed decimal */
+ case 'U' : /* Unsigned decimal */
+ r = 10; break;
+ case 'X' : /* Hexdecimal */
+ r = 16; break;
+ default: /* Unknown */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument */
+ val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (val & 0x80000000)) {
+ val = 0 - val;
+ f |= 4;
+ }
+ /* Put it in numeral string */
+ i = 0;
+ do {
+ d = (TCHAR)(val % r); val /= r;
+ if (d > 9) {
+ d += 7;
+ if (c == 'x') d += 0x20;
+ }
+ s[i++] = d + '0';
+ } while (val && i < sizeof(s) / sizeof(s[0]));
+ if (f & 4) s[i++] = '-';
+ cc = 0;
+ while (i < w-- && cc != EOF) {
+ cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
+ res++;
+ }
+ do {
+ cc = f_putc(s[--i], fil);
+ res++;
+ } while (i && cc != EOF);
+ if (cc != EOF) cc = 0;
+ }
+
+ va_end(arp);
+ return (cc == EOF) ? cc : res;
+}
+
+#endif /* !_FS_READONLY */
#endif /* _USE_STRFUNC */
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/ff.h
--- a/FATFileSystem/Core/ff.h Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Core/ff.h Sun Jan 16 09:20:30 2011 +0000
@@ -1,615 +1,615 @@
-/*---------------------------------------------------------------------------/
-/ FatFs - FAT file system module include file R0.08 (C)ChaN, 2010
-/----------------------------------------------------------------------------/
-/ FatFs module is a generic FAT file system module for small embedded systems.
-/ This is a free software that opened for education, research and commercial
-/ developments under license policy of following trems.
-/
-/ Copyright (C) 2010, ChaN, all right reserved.
-/
-/ * The FatFs module is a free software and there is NO WARRANTY.
-/ * No restriction on use. You can use, modify and redistribute it for
-/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
-/ * Redistributions of source code must retain the above copyright notice.
-/
-/----------------------------------------------------------------------------*/
-
-//Modified by Thomas Hamilton, Copyright 2010
-
-#ifndef _FATFS
-#define _FATFS 8085 /* Revision ID */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "integer.h" /* Basic integer types */
-#include "ffconf.h" /* FatFs configuration options */
-
-#if _FATFS != _FFCONF
-#error Wrong configuration file (ffconf.h).
-#endif
-
-
-/* DBCS code ranges and SBCS extend char conversion table */
-
-#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
-#define _DF1S 0x81 /* DBC 1st byte range 1 start */
-#define _DF1E 0x9F /* DBC 1st byte range 1 end */
-#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
-#define _DF2E 0xFC /* DBC 1st byte range 2 end */
-#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
-#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
-#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
-#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
-
-#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
-#define _DF1S 0x81
-#define _DF1E 0xFE
-#define _DS1S 0x40
-#define _DS1E 0x7E
-#define _DS2S 0x80
-#define _DS2E 0xFE
-
-#elif _CODE_PAGE == 949 /* Korean */
-#define _DF1S 0x81
-#define _DF1E 0xFE
-#define _DS1S 0x41
-#define _DS1E 0x5A
-#define _DS2S 0x61
-#define _DS2E 0x7A
-#define _DS3S 0x81
-#define _DS3E 0xFE
-
-#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
-#define _DF1S 0x81
-#define _DF1E 0xFE
-#define _DS1S 0x40
-#define _DS1E 0x7E
-#define _DS2S 0xA1
-#define _DS2E 0xFE
-
-#elif _CODE_PAGE == 437 /* U.S. (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 720 /* Arabic (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 737 /* Greek (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
- 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 775 /* Baltic (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
- 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
- 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
-
-#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
- 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
- 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 857 /* Turkish (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
- 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
- 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 866 /* Russian (OEM) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
-
-#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
- 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
-
-#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
- 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
-
-#elif _CODE_PAGE == 1253 /* Greek (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
- 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
-
-#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
- 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
-
-#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
-
-#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
- 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
-
-#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
-#define _DF1S 0
-#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
- 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
- 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
-
-#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
-#define _DF1S 0
-
-#else
-#error Unknown code page
-
-#endif
-
-
-
-/* Definitions corresponds to volume management */
-
-#if _MULTI_PARTITION /* Multiple partition configuration */
-#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
-#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
-typedef struct {
- BYTE pd; /* Physical drive# */
- BYTE pt; /* Partition # (0-3) */
-} PARTITION;
-extern const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
-
-#else /* Single partition configuration */
-#define LD2PD(drv) (drv) /* Physical drive# is equal to the logical drive# */
-#define LD2PT(drv) 0 /* Always mounts the 1st partition */
-
-#endif
-
-
-
-/* Type of path name strings on FatFs API */
-
-#if _LFN_UNICODE /* Unicode string */
-#if !_USE_LFN
-#error _LFN_UNICODE must be 0 in non-LFN cfg.
-#endif
-#ifndef _INC_TCHAR
-typedef WCHAR TCHAR;
-#define _T(x) L ## x
-#define _TEXT(x) L ## x
-#endif
-
-#else /* ANSI/OEM string */
-#ifndef _INC_TCHAR
-typedef char TCHAR;
-#define _T(x) x
-#define _TEXT(x) x
-#endif
-
-#endif
-
-
-
-/* Definitions corresponds to file shareing feature */
-
-#if _FS_SHARE
-#if _FS_READONLY
-#error _FS_SHARE must be 0 on R/O cfg.
-#endif
-typedef struct {
- DWORD clu; /* File ID 1, directory */
- WORD idx; /* File ID 2, index in the directory */
- WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:in write open */
-} FILESEM;
-#endif
-
-
-
-/* File system object structure (FATFS) */
-
-typedef struct {
- BYTE fs_type; /* FAT sub-type (0:Not mounted) */
- BYTE drv; /* Physical drive number */
- BYTE csize; /* Sectors per cluster (1,2,4...128) */
- BYTE n_fats; /* Number of FAT copies (1,2) */
- BYTE wflag; /* win[] dirty flag (1:must be written back) */
- BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
- WORD id; /* File system mount ID */
- WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
-#if _MAX_SS != 512
- WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
-#endif
-#if _FS_REENTRANT
- _SYNC_t sobj; /* Identifier of sync object */
-#endif
-#if !_FS_READONLY
- DWORD last_clust; /* Last allocated cluster */
- DWORD free_clust; /* Number of free clusters */
- DWORD fsi_sector; /* fsinfo sector (FAT32) */
-#endif
-#if _FS_RPATH
- DWORD cdir; /* Current directory start cluster (0:root) */
-#endif
- DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
- DWORD fsize; /* Sectors per FAT */
- DWORD fatbase; /* FAT start sector */
- DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
- DWORD database; /* Data start sector */
- DWORD winsect; /* Current sector appearing in the win[] */
- BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
-#if _FS_SHARE
- FILESEM flsem[_FS_SHARE]; /* File lock semaphores */
-#endif
-} FATFS;
-
-
-
-/* File object structure (FIL) */
-
-typedef struct {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- BYTE flag; /* File status flags */
- BYTE pad1;
- DWORD fptr; /* File read/write pointer */
- DWORD fsize; /* File size */
- DWORD org_clust; /* File start cluster (0 when fsize==0) */
- DWORD curr_clust; /* Current cluster */
- DWORD dsect; /* Current data sector */
-#if !_FS_READONLY
- DWORD dir_sect; /* Sector containing the directory entry */
- BYTE* dir_ptr; /* Ponter to the directory entry in the window */
-#endif
-#if _USE_FASTSEEK
- DWORD* cltbl; /* Pointer to the cluster link map table */
-#endif
-#if _FS_SHARE
- UINT lockid; /* File lock ID */
-#endif
-#if !_FS_TINY
- BYTE buf[_MAX_SS]; /* File data read/write buffer */
-#endif
-} FAT_FIL;
-
-
-
-/* Directory object structure (FAT_DIR) */
-
-typedef struct {
- FATFS* fs; /* Pointer to the owner file system object */
- WORD id; /* Owner file system mount ID */
- WORD index; /* Current read/write index number */
- DWORD sclust; /* Table start cluster (0:Root dir) */
- DWORD clust; /* Current cluster */
- DWORD sect; /* Current sector */
- BYTE* dir; /* Pointer to the current SFN entry in the win[] */
- BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
-#if _USE_LFN
- WCHAR* lfn; /* Pointer to the LFN working buffer */
- WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
-#endif
-} FAT_DIR;
-
-
-
-/* File status structure (FILINFO) */
-
-typedef struct {
- DWORD fsize; /* File size */
- WORD fdate; /* Last modified date */
- WORD ftime; /* Last modified time */
- BYTE fattrib; /* Attribute */
- TCHAR fname[13]; /* Short file name (8.3 format) */
-#if _USE_LFN
- TCHAR* lfname; /* Pointer to the LFN buffer */
- int lfsize; /* Size of LFN buffer [chrs] */
-#endif
-} FILINFO;
-
-
-
-/* File function return code (FRESULT) */
-
-typedef enum {
- FR_OK = 0, /* (0) Succeeded */
- FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
- FR_INT_ERR, /* (2) Assertion failed */
- FR_NOT_READY, /* (3) The physical drive cannot work */
- FR_NO_FILE, /* (4) Could not find the file */
- FR_NO_PATH, /* (5) Could not find the path */
- FR_INVALID_NAME, /* (6) The path name format is invalid */
- FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
- FR_EXIST, /* (8) Acces denied due to prohibited access */
- FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
- FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
- FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
- FR_NOT_ENABLED, /* (12) The volume has no work area */
- FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
- FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
- FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
- FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
- FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
- FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
-} FRESULT;
-
-
-
-/*--------------------------------------------------------------*/
-/* FatFs module application interface */
-
-FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
-FRESULT f_open (FAT_FIL*, const TCHAR*, BYTE); /* Open or create a file */
-FRESULT f_read (FAT_FIL*, void*, UINT, UINT*); /* Read data from a file */
-FRESULT f_lseek (FAT_FIL*, DWORD); /* Move file pointer of a file object */
-FRESULT f_close (FAT_FIL*); /* Close an open file object */
-FRESULT f_opendir (FAT_DIR*, const TCHAR*); /* Open an existing directory */
-FRESULT f_readdir (FAT_DIR*, FILINFO*); /* Read a directory item */
-FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
-#if !_FS_READONLY
-FRESULT f_write (FAT_FIL*, const void*, UINT, UINT*); /* Write data to a file */
-FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
-FRESULT f_truncate (FAT_FIL*); /* Truncate file */
-FRESULT f_sync (FAT_FIL*); /* Flush cached data of a writing file */
-FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
-FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
-FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
-FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
-FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
-#endif
-#if _USE_FORWARD
-FRESULT f_forward (FAT_FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
-#endif
-#if _USE_MKFS
-FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
-#endif
-#if _FS_RPATH
-FRESULT f_chdir (const TCHAR*); /* Change current directory */
-FRESULT f_chdrive (BYTE); /* Change current drive */
-#endif
-#if _USE_STRFUNC
-int f_putc (TCHAR, FAT_FIL*); /* Put a character to the file */
-int f_puts (const TCHAR*, FAT_FIL*); /* Put a string to the file */
-int f_printf (FAT_FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
-TCHAR* f_gets (TCHAR*, int, FAT_FIL*); /* Get a string from the file */
-#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
-#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
-#ifndef EOF
-#define EOF (-1)
-#endif
-#endif
-
-
-
-/*--------------------------------------------------------------*/
-/* Additional user defined functions */
-
-/* RTC function */
-#if !_FS_READONLY
-DWORD get_fattime (void);
-#endif
-
-/* Unicode support functions */
-#if _USE_LFN /* Unicode - OEM code conversion */
-WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
-WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
-#if _USE_LFN == 3 /* Memory functions */
-void* ff_memalloc (UINT); /* Allocate memory block */
-void ff_memfree (void*); /* Free memory block */
-#endif
-#endif
-
-/* Sync functions */
-#if _FS_REENTRANT
-int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
-int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
-int ff_req_grant (_SYNC_t); /* Lock sync object */
-void ff_rel_grant (_SYNC_t); /* Unlock sync object */
-#endif
-
-
-
-
-/*--------------------------------------------------------------*/
-/* Flags and offset address */
-
-
-/* File access control and file status flags (FIL.flag) */
-
-#define FA_READ 0x01
-#define FA_OPEN_EXISTING 0x00
-#define FA__ERROR 0x80
-
-#if !_FS_READONLY
-#define FA_WRITE 0x02
-#define FA_CREATE_NEW 0x04
-#define FA_CREATE_ALWAYS 0x08
-#define FA_OPEN_ALWAYS 0x10
-#define FA__WRITTEN 0x20
-#define FA__DIRTY 0x40
-#endif
-
-
-/* FAT sub type (FATFS.fs_type) */
-
-#define FS_FAT12 1
-#define FS_FAT16 2
-#define FS_FAT32 3
-
-
-/* File attribute bits for directory entry */
-
-#define AM_RDO 0x01 /* Read only */
-#define AM_HID 0x02 /* Hidden */
-#define AM_SYS 0x04 /* System */
-#define AM_VOL 0x08 /* Volume label */
-#define AM_LFN 0x0F /* LFN entry */
-#define AM_DIR 0x10 /* Directory */
-#define AM_ARC 0x20 /* Archive */
-#define AM_MASK 0x3F /* Mask of defined bits */
-
-
-/* Fast seek function */
-#define CREATE_LINKMAP 0xFFFFFFFF
-
-
-/* FatFs refers the members in the FAT structures with byte offset instead of
-/ structure member because there are incompatibility of the packing option
-/ between various compilers. */
-
-#define BS_jmpBoot 0
-#define BS_OEMName 3
-#define BPB_BytsPerSec 11
-#define BPB_SecPerClus 13
-#define BPB_RsvdSecCnt 14
-#define BPB_NumFATs 16
-#define BPB_RootEntCnt 17
-#define BPB_TotSec16 19
-#define BPB_Media 21
-#define BPB_FATSz16 22
-#define BPB_SecPerTrk 24
-#define BPB_NumHeads 26
-#define BPB_HiddSec 28
-#define BPB_TotSec32 32
-#define BS_55AA 510
-
-#define BS_DrvNum 36
-#define BS_BootSig 38
-#define BS_VolID 39
-#define BS_VolLab 43
-#define BS_FilSysType 54
-
-#define BPB_FATSz32 36
-#define BPB_ExtFlags 40
-#define BPB_FSVer 42
-#define BPB_RootClus 44
-#define BPB_FSInfo 48
-#define BPB_BkBootSec 50
-#define BS_DrvNum32 64
-#define BS_BootSig32 66
-#define BS_VolID32 67
-#define BS_VolLab32 71
-#define BS_FilSysType32 82
-
-#define FSI_LeadSig 0
-#define FSI_StrucSig 484
-#define FSI_Free_Count 488
-#define FSI_Nxt_Free 492
-
-#define MBR_Table 446
-
-#define DIR_Name 0
-#define DIR_Attr 11
-#define DIR_NTres 12
-#define DIR_CrtTime 14
-#define DIR_CrtDate 16
-#define DIR_FstClusHI 20
-#define DIR_WrtTime 22
-#define DIR_WrtDate 24
-#define DIR_FstClusLO 26
-#define DIR_FileSize 28
-#define LDIR_Ord 0
-#define LDIR_Attr 11
-#define LDIR_Type 12
-#define LDIR_Chksum 13
-#define LDIR_FstClusLO 26
-
-
-
-/*--------------------------------*/
-/* Multi-byte word access macros */
-
-#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
-#define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
-#define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
-#define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
-#define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
-#else /* Use byte-by-byte access to the FAT structure */
-#define LD_WORD(ptr) (WORD)(((WORD)*(BYTE*)((ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
-#define LD_DWORD(ptr) (DWORD)(((DWORD)*(BYTE*)((ptr)+3)<<24)|((DWORD)*(BYTE*)((ptr)+2)<<16)|((WORD)*(BYTE*)((ptr)+1)<<8)|*(BYTE*)(ptr))
-#define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8)
-#define ST_DWORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
+/*---------------------------------------------------------------------------/
+/ FatFs - FAT file system module include file R0.08 (C)ChaN, 2010
+/----------------------------------------------------------------------------/
+/ FatFs module is a generic FAT file system module for small embedded systems.
+/ This is a free software that opened for education, research and commercial
+/ developments under license policy of following trems.
+/
+/ Copyright (C) 2010, ChaN, all right reserved.
+/
+/ * The FatFs module is a free software and there is NO WARRANTY.
+/ * No restriction on use. You can use, modify and redistribute it for
+/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/----------------------------------------------------------------------------*/
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#ifndef _FATFS
+#define _FATFS 8085 /* Revision ID */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "integer.h" /* Basic integer types */
+#include "ffconf.h" /* FatFs configuration options */
+
+#if _FATFS != _FFCONF
+#error Wrong configuration file (ffconf.h).
+#endif
+
+
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+
+/* Definitions corresponds to volume management */
+
+#if _MULTI_PARTITION /* Multiple partition configuration */
+#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+typedef struct {
+ BYTE pd; /* Physical drive# */
+ BYTE pt; /* Partition # (0-3) */
+} PARTITION;
+extern const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
+
+#else /* Single partition configuration */
+#define LD2PD(drv) (drv) /* Physical drive# is equal to the logical drive# */
+#define LD2PT(drv) 0 /* Always mounts the 1st partition */
+
+#endif
+
+
+
+/* Type of path name strings on FatFs API */
+
+#if _LFN_UNICODE /* Unicode string */
+#if !_USE_LFN
+#error _LFN_UNICODE must be 0 in non-LFN cfg.
+#endif
+#ifndef _INC_TCHAR
+typedef WCHAR TCHAR;
+#define _T(x) L ## x
+#define _TEXT(x) L ## x
+#endif
+
+#else /* ANSI/OEM string */
+#ifndef _INC_TCHAR
+typedef char TCHAR;
+#define _T(x) x
+#define _TEXT(x) x
+#endif
+
+#endif
+
+
+
+/* Definitions corresponds to file shareing feature */
+
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on R/O cfg.
+#endif
+typedef struct {
+ DWORD clu; /* File ID 1, directory */
+ WORD idx; /* File ID 2, index in the directory */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:in write open */
+} FILESEM;
+#endif
+
+
+
+/* File system object structure (FATFS) */
+
+typedef struct {
+ BYTE fs_type; /* FAT sub-type (0:Not mounted) */
+ BYTE drv; /* Physical drive number */
+ BYTE csize; /* Sectors per cluster (1,2,4...128) */
+ BYTE n_fats; /* Number of FAT copies (1,2) */
+ BYTE wflag; /* win[] dirty flag (1:must be written back) */
+ BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
+ WORD id; /* File system mount ID */
+ WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
+#if _MAX_SS != 512
+ WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
+#endif
+#if _FS_REENTRANT
+ _SYNC_t sobj; /* Identifier of sync object */
+#endif
+#if !_FS_READONLY
+ DWORD last_clust; /* Last allocated cluster */
+ DWORD free_clust; /* Number of free clusters */
+ DWORD fsi_sector; /* fsinfo sector (FAT32) */
+#endif
+#if _FS_RPATH
+ DWORD cdir; /* Current directory start cluster (0:root) */
+#endif
+ DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
+ DWORD fsize; /* Sectors per FAT */
+ DWORD fatbase; /* FAT start sector */
+ DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
+ DWORD database; /* Data start sector */
+ DWORD winsect; /* Current sector appearing in the win[] */
+ BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
+#if _FS_SHARE
+ FILESEM flsem[_FS_SHARE]; /* File lock semaphores */
+#endif
+} FATFS;
+
+
+
+/* File object structure (FIL) */
+
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ BYTE flag; /* File status flags */
+ BYTE pad1;
+ DWORD fptr; /* File read/write pointer */
+ DWORD fsize; /* File size */
+ DWORD org_clust; /* File start cluster (0 when fsize==0) */
+ DWORD curr_clust; /* Current cluster */
+ DWORD dsect; /* Current data sector */
+#if !_FS_READONLY
+ DWORD dir_sect; /* Sector containing the directory entry */
+ BYTE* dir_ptr; /* Ponter to the directory entry in the window */
+#endif
+#if _USE_FASTSEEK
+ DWORD* cltbl; /* Pointer to the cluster link map table */
+#endif
+#if _FS_SHARE
+ UINT lockid; /* File lock ID */
+#endif
+#if !_FS_TINY
+ BYTE buf[_MAX_SS]; /* File data read/write buffer */
+#endif
+} FAT_FIL;
+
+
+
+/* Directory object structure (FAT_DIR) */
+
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ WORD index; /* Current read/write index number */
+ DWORD sclust; /* Table start cluster (0:Root dir) */
+ DWORD clust; /* Current cluster */
+ DWORD sect; /* Current sector */
+ BYTE* dir; /* Pointer to the current SFN entry in the win[] */
+ BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
+#if _USE_LFN
+ WCHAR* lfn; /* Pointer to the LFN working buffer */
+ WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
+#endif
+} FAT_DIR;
+
+
+
+/* File status structure (FILINFO) */
+
+typedef struct {
+ DWORD fsize; /* File size */
+ WORD fdate; /* Last modified date */
+ WORD ftime; /* Last modified time */
+ BYTE fattrib; /* Attribute */
+ TCHAR fname[13]; /* Short file name (8.3 format) */
+#if _USE_LFN
+ TCHAR* lfname; /* Pointer to the LFN buffer */
+ int lfsize; /* Size of LFN buffer [chrs] */
+#endif
+} FILINFO;
+
+
+
+/* File function return code (FRESULT) */
+
+typedef enum {
+ FR_OK = 0, /* (0) Succeeded */
+ FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
+ FR_INT_ERR, /* (2) Assertion failed */
+ FR_NOT_READY, /* (3) The physical drive cannot work */
+ FR_NO_FILE, /* (4) Could not find the file */
+ FR_NO_PATH, /* (5) Could not find the path */
+ FR_INVALID_NAME, /* (6) The path name format is invalid */
+ FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
+ FR_EXIST, /* (8) Acces denied due to prohibited access */
+ FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
+ FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
+ FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
+ FR_NOT_ENABLED, /* (12) The volume has no work area */
+ FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
+ FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
+ FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
+ FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
+ FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
+ FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
+} FRESULT;
+
+
+
+/*--------------------------------------------------------------*/
+/* FatFs module application interface */
+
+FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
+FRESULT f_open (FAT_FIL*, const TCHAR*, BYTE); /* Open or create a file */
+FRESULT f_read (FAT_FIL*, void*, UINT, UINT*); /* Read data from a file */
+FRESULT f_lseek (FAT_FIL*, DWORD); /* Move file pointer of a file object */
+FRESULT f_close (FAT_FIL*); /* Close an open file object */
+FRESULT f_opendir (FAT_DIR*, const TCHAR*); /* Open an existing directory */
+FRESULT f_readdir (FAT_DIR*, FILINFO*); /* Read a directory item */
+FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
+#if !_FS_READONLY
+FRESULT f_write (FAT_FIL*, const void*, UINT, UINT*); /* Write data to a file */
+FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
+FRESULT f_truncate (FAT_FIL*); /* Truncate file */
+FRESULT f_sync (FAT_FIL*); /* Flush cached data of a writing file */
+FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
+FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
+FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
+FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
+FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
+#endif
+#if _USE_FORWARD
+FRESULT f_forward (FAT_FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
+#endif
+#if _USE_MKFS
+FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
+#endif
+#if _FS_RPATH
+FRESULT f_chdir (const TCHAR*); /* Change current directory */
+FRESULT f_chdrive (BYTE); /* Change current drive */
+#endif
+#if _USE_STRFUNC
+int f_putc (TCHAR, FAT_FIL*); /* Put a character to the file */
+int f_puts (const TCHAR*, FAT_FIL*); /* Put a string to the file */
+int f_printf (FAT_FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
+TCHAR* f_gets (TCHAR*, int, FAT_FIL*); /* Get a string from the file */
+#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
+#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
+#ifndef EOF
+#define EOF (-1)
+#endif
+#endif
+
+
+
+/*--------------------------------------------------------------*/
+/* Additional user defined functions */
+
+/* RTC function */
+#if !_FS_READONLY
+DWORD get_fattime (void);
+#endif
+
+/* Unicode support functions */
+#if _USE_LFN /* Unicode - OEM code conversion */
+WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
+WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
+#if _USE_LFN == 3 /* Memory functions */
+void* ff_memalloc (UINT); /* Allocate memory block */
+void ff_memfree (void*); /* Free memory block */
+#endif
+#endif
+
+/* Sync functions */
+#if _FS_REENTRANT
+int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
+int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
+int ff_req_grant (_SYNC_t); /* Lock sync object */
+void ff_rel_grant (_SYNC_t); /* Unlock sync object */
+#endif
+
+
+
+
+/*--------------------------------------------------------------*/
+/* Flags and offset address */
+
+
+/* File access control and file status flags (FIL.flag) */
+
+#define FA_READ 0x01
+#define FA_OPEN_EXISTING 0x00
+#define FA__ERROR 0x80
+
+#if !_FS_READONLY
+#define FA_WRITE 0x02
+#define FA_CREATE_NEW 0x04
+#define FA_CREATE_ALWAYS 0x08
+#define FA_OPEN_ALWAYS 0x10
+#define FA__WRITTEN 0x20
+#define FA__DIRTY 0x40
+#endif
+
+
+/* FAT sub type (FATFS.fs_type) */
+
+#define FS_FAT12 1
+#define FS_FAT16 2
+#define FS_FAT32 3
+
+
+/* File attribute bits for directory entry */
+
+#define AM_RDO 0x01 /* Read only */
+#define AM_HID 0x02 /* Hidden */
+#define AM_SYS 0x04 /* System */
+#define AM_VOL 0x08 /* Volume label */
+#define AM_LFN 0x0F /* LFN entry */
+#define AM_DIR 0x10 /* Directory */
+#define AM_ARC 0x20 /* Archive */
+#define AM_MASK 0x3F /* Mask of defined bits */
+
+
+/* Fast seek function */
+#define CREATE_LINKMAP 0xFFFFFFFF
+
+
+/* FatFs refers the members in the FAT structures with byte offset instead of
+/ structure member because there are incompatibility of the packing option
+/ between various compilers. */
+
+#define BS_jmpBoot 0
+#define BS_OEMName 3
+#define BPB_BytsPerSec 11
+#define BPB_SecPerClus 13
+#define BPB_RsvdSecCnt 14
+#define BPB_NumFATs 16
+#define BPB_RootEntCnt 17
+#define BPB_TotSec16 19
+#define BPB_Media 21
+#define BPB_FATSz16 22
+#define BPB_SecPerTrk 24
+#define BPB_NumHeads 26
+#define BPB_HiddSec 28
+#define BPB_TotSec32 32
+#define BS_55AA 510
+
+#define BS_DrvNum 36
+#define BS_BootSig 38
+#define BS_VolID 39
+#define BS_VolLab 43
+#define BS_FilSysType 54
+
+#define BPB_FATSz32 36
+#define BPB_ExtFlags 40
+#define BPB_FSVer 42
+#define BPB_RootClus 44
+#define BPB_FSInfo 48
+#define BPB_BkBootSec 50
+#define BS_DrvNum32 64
+#define BS_BootSig32 66
+#define BS_VolID32 67
+#define BS_VolLab32 71
+#define BS_FilSysType32 82
+
+#define FSI_LeadSig 0
+#define FSI_StrucSig 484
+#define FSI_Free_Count 488
+#define FSI_Nxt_Free 492
+
+#define MBR_Table 446
+
+#define DIR_Name 0
+#define DIR_Attr 11
+#define DIR_NTres 12
+#define DIR_CrtTime 14
+#define DIR_CrtDate 16
+#define DIR_FstClusHI 20
+#define DIR_WrtTime 22
+#define DIR_WrtDate 24
+#define DIR_FstClusLO 26
+#define DIR_FileSize 28
+#define LDIR_Ord 0
+#define LDIR_Attr 11
+#define LDIR_Type 12
+#define LDIR_Chksum 13
+#define LDIR_FstClusLO 26
+
+
+
+/*--------------------------------*/
+/* Multi-byte word access macros */
+
+#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
+#define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
+#define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
+#define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
+#define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
+#else /* Use byte-by-byte access to the FAT structure */
+#define LD_WORD(ptr) (WORD)(((WORD)*(BYTE*)((ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
+#define LD_DWORD(ptr) (DWORD)(((DWORD)*(BYTE*)((ptr)+3)<<24)|((DWORD)*(BYTE*)((ptr)+2)<<16)|((WORD)*(BYTE*)((ptr)+1)<<8)|*(BYTE*)(ptr))
+#define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8)
+#define ST_DWORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *(BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* _FATFS */
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/ffconf.h --- a/FATFileSystem/Core/ffconf.h Sat Jan 15 05:58:22 2011 +0000 +++ b/FATFileSystem/Core/ffconf.h Sun Jan 16 09:20:30 2011 +0000 @@ -1,163 +1,163 @@ -//Modified by Thomas Hamilton, Copyright 2010 - -/*---------------------------------------------------------------------------/ -/ FatFs - FAT file system module configuration file R0.08 (C)ChaN, 2010 / -/----------------------------------------------------------------------------/ -/ -/ CAUTION! Do not forget to make clean the project after any changes to -/ the configuration options. -/ -/---------------------------------------------------------------------------*/ - -#ifndef _FFCONF -#define _FFCONF 8085 /* Revision ID */ - -/*---------------------------------------------------------------------------/ -/ Function and Buffer Configurations / -/---------------------------------------------------------------------------*/ - -#define _FS_TINY 0 /* 0:Normal or 1:Tiny */ -/* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system -/ object instead of the sector buffer in the individual file object for file -/ data transfer. This reduces memory consumption 512 bytes each file object. */ - -#define _FS_READONLY 0 /* 0:Read/Write or 1:Read only */ -/* Setting _FS_READONLY to 1 defines read only configuration. This removes -/ writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename, -/ f_truncate and useless f_getfree. */ - -#define _FS_MINIMIZE 0 /* 0, 1, 2 or 3 */ -/* The _FS_MINIMIZE option defines minimization level to remove some functions. -/ -/ 0: Full function. -/ 1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod, f_truncate and f_rename -/ are removed. -/ 2: f_opendir and f_readdir are removed in addition to level 1. -/ 3: f_lseek is removed in addition to level 2. */ - -#define _USE_STRFUNC 2 /* 0:Disable or 1/2:Enable */ -/* To enable string functions, set _USE_STRFUNC to 1 or 2. */ - -#define _USE_MKFS 0 /* 0:Disable or 1:Enable */ -/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */ - -#define _USE_FORWARD 0 /* 0:Disable or 1:Enable */ -/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */ - -#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */ -/* To enable fast seek feature, set _USE_FASTSEEK to 1. */ - -/*---------------------------------------------------------------------------/ -/ Locale and Namespace Configurations -/----------------------------------------------------------------------------*/ - -#define _CODE_PAGE 1 -/* The _CODE_PAGE specifies the OEM code page to be used on the target system. -/ Incorrect setting of the code page can cause a file open failure. -/ -/ 932 - Japanese Shift-JIS (DBCS, OEM, Windows) -/ 936 - Simplified Chinese GBK (DBCS, OEM, Windows) -/ 949 - Korean (DBCS, OEM, Windows) -/ 950 - Traditional Chinese Big5 (DBCS, OEM, Windows) -/ 1250 - Central Europe (Windows) -/ 1251 - Cyrillic (Windows) -/ 1252 - Latin 1 (Windows) -/ 1253 - Greek (Windows) -/ 1254 - Turkish (Windows) -/ 1255 - Hebrew (Windows) -/ 1256 - Arabic (Windows) -/ 1257 - Baltic (Windows) -/ 1258 - Vietnam (OEM, Windows) -/ 437 - U.S. (OEM) -/ 720 - Arabic (OEM) -/ 737 - Greek (OEM) -/ 775 - Baltic (OEM) -/ 850 - Multilingual Latin 1 (OEM) -/ 858 - Multilingual Latin 1 + Euro (OEM) -/ 852 - Latin 2 (OEM) -/ 855 - Cyrillic (OEM) -/ 866 - Russian (OEM) -/ 857 - Turkish (OEM) -/ 862 - Hebrew (OEM) -/ 874 - Thai (OEM, Windows) -/ 1 - ASCII only (Valid for non LFN cfg.) */ - -#define _USE_LFN 0 /* 0 to 3 */ -#define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */ -/* The _USE_LFN option switches the LFN support. -/ -/ 0: Disable LFN. _MAX_LFN and _LFN_UNICODE have no effect. -/ 1: Enable LFN with static working buffer on the bss. NOT REENTRANT. -/ 2: Enable LFN with dynamic working buffer on the STACK. -/ 3: Enable LFN with dynamic working buffer on the HEAP. -/ -/ The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN, -/ Unicode handling functions ff_convert() and ff_wtoupper() must be added -/ to the project. When enable to use heap, memory control functions -/ ff_memalloc() and ff_memfree() must be added to the project. */ - -#define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */ -/* To switch the character code set on FatFs API to Unicode, -/ enable LFN feature and set _LFN_UNICODE to 1. */ - -#define _FS_RPATH 0 /* 0:Disable or 1:Enable */ -/* When _FS_RPATH is set to 1, relative path feature is enabled and f_chdir, -/ f_chdrive function are available. -/ Note that output of the f_readdir fnction is affected by this option. */ - -/*---------------------------------------------------------------------------/ -/ Physical Drive Configurations -/----------------------------------------------------------------------------*/ - -#define _DRIVES 7 -/* Number of volumes (logical drives) to be used. */ - -#define _MAX_SS 512 /* 512, 1024, 2048 or 4096 */ -/* Maximum sector size to be handled. -/ Always set 512 for memory card and hard disk but a larger value may be -/ required for floppy disk (512/1024) and optical disk (512/2048). -/ When _MAX_SS is larger than 512, GET_SECTOR_SIZE command must be implememted -/ to the disk_ioctl function. */ - -#define _MULTI_PARTITION 0 /* 0:Single parition or 1:Multiple partition */ -/* When _MULTI_PARTITION is set to 0, each volume is bound to the same physical -/ drive number and can mount only first primaly partition. When it is set to 1, -/ each volume is tied to the partitions listed in Drives[]. */ - -/*---------------------------------------------------------------------------/ -/ System Configurations -/----------------------------------------------------------------------------*/ - -#define _WORD_ACCESS 0 /* 0 or 1 */ -/* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS -/ option defines which access method is used to the word data on the FAT volume. -/ -/ 0: Byte-by-byte access. -/ 1: Word access. Do not choose this unless following condition is met. -/ -/ When the byte order on the memory is big-endian or address miss-aligned word -/ access results incorrect behavior, the _WORD_ACCESS must be set to 0. -/ If it is not the case, the value can also be set to 1 to improve the -/ performance and code size. */ - -#define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */ -#define _FS_TIMEOUT 1000 /* Timeout period in unit of time ticks */ -#define _SYNC_t HANDLE /* O/S dependent type of sync object. - e.g. HANDLE, OS_EVENT*, ID and etc.. */ -/* Include a header file here to define O/S system calls */ -/* #include <windows.h>, <ucos_ii.h.h>, <semphr.h> or ohters. */ - -/* The _FS_REENTRANT option switches the reentrancy of the FatFs module. -/ -/ 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect. -/ 1: Enable reentrancy. Also user provided synchronization handlers, -/ ff_req_grant, ff_rel_grant, ff_del_syncobj and ff_cre_syncobj -/ function must be added to the project. */ - -#define _FS_SHARE 0 /* 0:Disable or >=1:Enable */ -/* To enable file shareing feature, set _FS_SHARE to >= 1 and also user - provided memory handlers, ff_memalloc and ff_memfree function must be - added to the project. The value defines number of files can be opened - per volume. */ - +//Modified by Thomas Hamilton, Copyright 2010 + +/*---------------------------------------------------------------------------/ +/ FatFs - FAT file system module configuration file R0.08 (C)ChaN, 2010 / +/----------------------------------------------------------------------------/ +/ +/ CAUTION! Do not forget to make clean the project after any changes to +/ the configuration options. +/ +/---------------------------------------------------------------------------*/ + +#ifndef _FFCONF +#define _FFCONF 8085 /* Revision ID */ + +/*---------------------------------------------------------------------------/ +/ Function and Buffer Configurations / +/---------------------------------------------------------------------------*/ + +#define _FS_TINY 0 /* 0:Normal or 1:Tiny */ +/* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system +/ object instead of the sector buffer in the individual file object for file +/ data transfer. This reduces memory consumption 512 bytes each file object. */ + +#define _FS_READONLY 0 /* 0:Read/Write or 1:Read only */ +/* Setting _FS_READONLY to 1 defines read only configuration. This removes +/ writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename, +/ f_truncate and useless f_getfree. */ + +#define _FS_MINIMIZE 0 /* 0, 1, 2 or 3 */ +/* The _FS_MINIMIZE option defines minimization level to remove some functions. +/ +/ 0: Full function. +/ 1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod, f_truncate and f_rename +/ are removed. +/ 2: f_opendir and f_readdir are removed in addition to level 1. +/ 3: f_lseek is removed in addition to level 2. */ + +#define _USE_STRFUNC 2 /* 0:Disable or 1/2:Enable */ +/* To enable string functions, set _USE_STRFUNC to 1 or 2. */ + +#define _USE_MKFS 1 /* 0:Disable or 1:Enable */ +/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */ + +#define _USE_FORWARD 0 /* 0:Disable or 1:Enable */ +/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */ + +#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */ +/* To enable fast seek feature, set _USE_FASTSEEK to 1. */ + +/*---------------------------------------------------------------------------/ +/ Locale and Namespace Configurations +/----------------------------------------------------------------------------*/ + +#define _CODE_PAGE 1 +/* The _CODE_PAGE specifies the OEM code page to be used on the target system. +/ Incorrect setting of the code page can cause a file open failure. +/ +/ 932 - Japanese Shift-JIS (DBCS, OEM, Windows) +/ 936 - Simplified Chinese GBK (DBCS, OEM, Windows) +/ 949 - Korean (DBCS, OEM, Windows) +/ 950 - Traditional Chinese Big5 (DBCS, OEM, Windows) +/ 1250 - Central Europe (Windows) +/ 1251 - Cyrillic (Windows) +/ 1252 - Latin 1 (Windows) +/ 1253 - Greek (Windows) +/ 1254 - Turkish (Windows) +/ 1255 - Hebrew (Windows) +/ 1256 - Arabic (Windows) +/ 1257 - Baltic (Windows) +/ 1258 - Vietnam (OEM, Windows) +/ 437 - U.S. (OEM) +/ 720 - Arabic (OEM) +/ 737 - Greek (OEM) +/ 775 - Baltic (OEM) +/ 850 - Multilingual Latin 1 (OEM) +/ 858 - Multilingual Latin 1 + Euro (OEM) +/ 852 - Latin 2 (OEM) +/ 855 - Cyrillic (OEM) +/ 866 - Russian (OEM) +/ 857 - Turkish (OEM) +/ 862 - Hebrew (OEM) +/ 874 - Thai (OEM, Windows) +/ 1 - ASCII only (Valid for non LFN cfg.) */ + +#define _USE_LFN 0 /* 0 to 3 */ +#define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */ +/* The _USE_LFN option switches the LFN support. +/ +/ 0: Disable LFN. _MAX_LFN and _LFN_UNICODE have no effect. +/ 1: Enable LFN with static working buffer on the bss. NOT REENTRANT. +/ 2: Enable LFN with dynamic working buffer on the STACK. +/ 3: Enable LFN with dynamic working buffer on the HEAP. +/ +/ The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN, +/ Unicode handling functions ff_convert() and ff_wtoupper() must be added +/ to the project. When enable to use heap, memory control functions +/ ff_memalloc() and ff_memfree() must be added to the project. */ + +#define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */ +/* To switch the character code set on FatFs API to Unicode, +/ enable LFN feature and set _LFN_UNICODE to 1. */ + +#define _FS_RPATH 0 /* 0:Disable or 1:Enable */ +/* When _FS_RPATH is set to 1, relative path feature is enabled and f_chdir, +/ f_chdrive function are available. +/ Note that output of the f_readdir fnction is affected by this option. */ + +/*---------------------------------------------------------------------------/ +/ Physical Drive Configurations +/----------------------------------------------------------------------------*/ + +#define _DRIVES 7 +/* Number of volumes (logical drives) to be used. */ + +#define _MAX_SS 512 /* 512, 1024, 2048 or 4096 */ +/* Maximum sector size to be handled. +/ Always set 512 for memory card and hard disk but a larger value may be +/ required for floppy disk (512/1024) and optical disk (512/2048). +/ When _MAX_SS is larger than 512, GET_SECTOR_SIZE command must be implememted +/ to the disk_ioctl function. */ + +#define _MULTI_PARTITION 0 /* 0:Single parition or 1:Multiple partition */ +/* When _MULTI_PARTITION is set to 0, each volume is bound to the same physical +/ drive number and can mount only first primaly partition. When it is set to 1, +/ each volume is tied to the partitions listed in Drives[]. */ + +/*---------------------------------------------------------------------------/ +/ System Configurations +/----------------------------------------------------------------------------*/ + +#define _WORD_ACCESS 0 /* 0 or 1 */ +/* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS +/ option defines which access method is used to the word data on the FAT volume. +/ +/ 0: Byte-by-byte access. +/ 1: Word access. Do not choose this unless following condition is met. +/ +/ When the byte order on the memory is big-endian or address miss-aligned word +/ access results incorrect behavior, the _WORD_ACCESS must be set to 0. +/ If it is not the case, the value can also be set to 1 to improve the +/ performance and code size. */ + +#define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */ +#define _FS_TIMEOUT 1024 /* Timeout period in unit of time ticks */ +#define _SYNC_t HANDLE /* O/S dependent type of sync object. + e.g. HANDLE, OS_EVENT*, ID and etc.. */ +/* Include a header file here to define O/S system calls */ +/* #include <windows.h>, <ucos_ii.h.h>, <semphr.h> or ohters. */ + +/* The _FS_REENTRANT option switches the reentrancy of the FatFs module. +/ +/ 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect. +/ 1: Enable reentrancy. Also user provided synchronization handlers, +/ ff_req_grant, ff_rel_grant, ff_del_syncobj and ff_cre_syncobj +/ function must be added to the project. */ + +#define _FS_SHARE 0 /* 0:Disable or >=1:Enable */ +/* To enable file sharing feature, set _FS_SHARE to >= 1 and also user + provided memory handlers, ff_memalloc and ff_memfree function must be + added to the project. The value defines number of files can be opened + per volume. */ + #endif \ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Core/integer.h --- a/FATFileSystem/Core/integer.h Sat Jan 15 05:58:22 2011 +0000 +++ b/FATFileSystem/Core/integer.h Sun Jan 16 09:20:30 2011 +0000 @@ -14,7 +14,7 @@ typedef unsigned int UINT; /* These types must be 8-bit integer */ -typedef signed char CHAR; +typedef char CHAR; typedef unsigned char UCHAR; typedef unsigned char BYTE; @@ -22,6 +22,7 @@ typedef short SHORT; typedef unsigned short USHORT; typedef unsigned short WORD; +typedef unsigned short WCHAR; /* These types must be 32-bit integer */ typedef long LONG;
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Interface/FATFileSystem.cpp
--- a/FATFileSystem/Interface/FATFileSystem.cpp Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Interface/FATFileSystem.cpp Sun Jan 16 09:20:30 2011 +0000
@@ -98,7 +98,7 @@
int FATFileSystem::rename(const char* oldname, const char* newname)
{
- /*char OldName[64];
+ char OldName[64];
sprintf(OldName, "%d:/%s", Drive, oldname);
if (f_rename((const TCHAR*)OldName, (const TCHAR*)newname))
@@ -108,8 +108,7 @@
else
{
return 0;
- }*/
- return 0;
+ }
}
DirHandle* FATFileSystem::opendir(const char* name)
@@ -141,4 +140,16 @@
{
return 0;
}
+}
+
+int FATFileSystem::format(unsigned int allocationunit)
+{
+ if (f_mkfs(Drive, 0, allocationunit))
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
}
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 FATFileSystem/Interface/FATFileSystem.h
--- a/FATFileSystem/Interface/FATFileSystem.h Sat Jan 15 05:58:22 2011 +0000
+++ b/FATFileSystem/Interface/FATFileSystem.h Sun Jan 16 09:20:30 2011 +0000
@@ -25,6 +25,8 @@
FATFileSystem(const char* SystemName);
virtual ~FATFileSystem();
+
+ int format(unsigned int allocationunit);
virtual FileHandle* open(const char* filename, int flags);
virtual int remove(const char* filename);
diff -r d85e20b6b904 -r ddf09d859ed7 SDCard.cpp
--- a/SDCard.cpp Sat Jan 15 05:58:22 2011 +0000
+++ b/SDCard.cpp Sun Jan 16 09:20:30 2011 +0000
@@ -6,121 +6,145 @@
#include "SDCard.h"
SDCard::SDCard(PinName mosi, PinName miso, PinName sck, PinName cs,
- const char* DiskName) : FATFileSystem(DiskName),
- DataLines(mosi, miso, sck), ChipSelect(cs), CRCMode(1), Timeout(1024)
+ const char* DiskName) :
+ FATFileSystem(DiskName), DataLines(mosi, miso, sck), ChipSelect(cs),
+ t(0), Timeout(1024), CRCMode(1), Capacity(0), Version(0), Status(0x00)
+ //card always starts uninitialized and in CRC mode; version 1 low-capacity
+ //card protocols are backwards-compatible with all other card protocols
{
DataLines.frequency(100000);
//set universal speed
ChipSelect.write(1);
- //chip select is active low
+ //deselect the chip
GenerateCRCTable(1, 137, CommandCRCTable);
- //generate the command crc lookup table;
- //(polynomial x^7 + x^3 + 1 converts to decimal 137)
+ //generate the CRC7 lookup table; polynomial x^7 + x^3 + 1 converts to
+ //decimal 137
GenerateCRCTable(2, 69665, DataCRCTable);
- //generate the data crc lookup table;
- //(polynomial x^16 + x^12 + x^5 + 1 converts to decimal 69665)
+ //generate the crc16 lookup table; polynomial x^16 + x^12 + x^5 + 1
+ //converts to decimal 69665
Initialize();
- //run card setup operations
+ //run setup operations
}
SDCard::~SDCard()
+ //delete all tables and card data registers
{
delete[] CommandCRCTable;
delete[] DataCRCTable;
delete[] OCR;
delete[] CSD;
delete[] FSR;
- delete[] Workspace;
- //delete all card data register copies and workspaces
delete this;
}
unsigned char SDCard::disk_initialize()
-{ return 0x00; }
- //disc is initialized during construction
+ //give the FAT module access to the card setup routine
+{
+ if (Status == 0x01)
+ {
+ return Initialize();
+ }
+ else
+ {
+ return Status;
+ }
+}
unsigned char SDCard::disk_status()
-{ return 0x00; }
- //card is always initialized
+ //return card initialization and availability status
+{ return Status; }
unsigned char SDCard::disk_read(
unsigned char* buff, unsigned long sector, unsigned char count)
+ //give the FAT module access to the multiple-sector reading function
{ return Read((unsigned int)sector, count, buff); }
- //multiple sector read transaction
unsigned char SDCard::disk_write(
const unsigned char* buff, unsigned long sector, unsigned char count)
+ //give the FAT module access to the multiple-sector writing function
{ return Write((unsigned int)sector, count, (unsigned char*)buff); }
- //multiple sector write transaction
unsigned char SDCard::disk_sync()
+ //the disk is always synchronized, so return "disk ready"
{ return 0x00; }
- //all disc functions are synchronous
unsigned long SDCard::disk_sector_count()
+ //calculate and return the number of sectors on the card from the CSD
{
switch (CSD[0] & 0xC0)
{
case 0x00:
+ //calculate sector count as specified for version 1 cards
return ((((CSD[6] & 0x03) << 10) | (CSD[7] << 2)
| ((CSD[8] & 0xC0) >> 6)) + 1)
* (1 << ((((CSD[9] & 0x03) << 1)
| ((CSD[10] & 0x80) >> 7)) + 2));
- //calculate sector count as specified for version 1 cards
case 0x40:
+ //calculate sector count as specified for version 2 cards
return ((((CSD[7] & 0x3F) << 16)
| (CSD[8] << 8) | CSD[9]) + 1) * 1024;
- //calculate sector count as specified for version 2 cards
default:
return 0;
}
}
- //return number of sectors on card
unsigned short SDCard::disk_sector_size()
+ //fix the sector size to 512 bytes for all cards versions
{ return 512; }
- //fix SD card sector size to 512 for all cards
unsigned long SDCard::disk_block_size()
+ //calculate and return the number of sectors in an erase block from the CSD
{
- switch (CSD[0] & 0xC0)
+ if (Version)
+ //the erase sector size is the allocation unit for version 2 cards
{
- case 0x00:
- return (CSD[10] << 1) | (CSD[11] >> 7) + 1;
- //calculate erase sector size for version 1 cards
- case 0x40:
- return 1;
- //erase sector size is given by
- //allocation unit for version 2 cards
- default:
- return 0;
+ return 1;
+ }
+ else
+ //calculate the erase sector size for version 1 cards
+ {
+ return (CSD[10] << 1) | (CSD[11] >> 7) + 1;
}
}
- //return the number of sectors in an erase sector
+
+unsigned char SDCard::Format(unsigned int AllocationUnit)
+ //call the FAT module formatting function
+{
+ if (format(AllocationUnit))
+ {
+ return 0x01;
+ }
+ else
+ {
+ return 0x00;
+ }
+}
unsigned char SDCard::Log(unsigned char Control, unsigned char Data)
{
- static unsigned char Mode = 0x00;
- //store previous operating mode to determine current behavior
+ static unsigned char Workspace;
+ //work area for card commands and data transactions
static unsigned short Index = 0;
//store last written byte number of current memory block
+ static unsigned char Mode = 0x00;
+ //store previous operating mode to determine current behavior
- if (CRCMode)
+ SelectCRCMode(0);
//CRC's are not used in raw data mode
- {
- SelectCRCMode(0);
- }
switch (Control)
{
case 0x00:
- //control code 0x00 synchronizes the card
+ //control code 0x00 synchronizes the card
if (Mode)
+ //if the card is in read or write mode, synchronize the card
{
ChipSelect.write(0);
for (; Index < 512; Index++)
- //get through left over space, filling with FFh
+ //get through the left over space, filling with 0xFF
{
DataLines.write(0xFF);
}
DataLines.write(0xFF);
DataLines.write(0xFF);
- //get through CRC
+ //get through the CRC
ChipSelect.write(1);
if (Mode == 0x01)
+ //if the card is in write mode, finish the current sector
+ //and finalize the writing operation
{
ChipSelect.write(0);
t = 0;
@@ -129,44 +153,45 @@
t++;
} while (((DataLines.write(0xFF) & 0x11) != 0x01)
&& (t < Timeout));
- //get through data response token
+ //get through the data response token
while (!DataLines.write(0xFF));
- //get through busy signal
+ //get through the busy signal
DataLines.write(0xFD);
DataLines.write(0xFF);
- //send stop transmission token
+ //send the stop transmission token
while (!DataLines.write(0xFF));
- //get through busy signal
+ //get through the busy signal
ChipSelect.write(1);
DataLines.write(0xFF);
}
- //finish write block
else
+ //if the card is in read mode, finish the current sector
+ //and finalize the reading operation
{
- Command(12, 0, Workspace);
- //send stop transmission command
+ Command(12, 0, &Workspace);
+ //send the stop transmission command
ChipSelect.write(0);
while (!DataLines.write(0xFF));
- //get through busy signal
+ //get through the busy signal
ChipSelect.write(1);
DataLines.write(0xFF);
}
- //finish read block
Index = 0;
Mode = 0x00;
- //reset index to start and mode to synchronized
+ //reset the index to the start and switch the mode to
+ //synchronized mode
}
return 0xFF;
case 0x01:
//control code 1 writes a byte
if (Mode != 0x01)
- //if previous call was not a write operation, synchronize
- //the card, start a new write block, and set function to
+ //if the previous call was not a write operation, synchronize
+ //the card, start a new write block, and set the function to
//write mode
{
Log(0, 0);
- Command(25, 0, Workspace);
+ Command(25, 0, &Workspace);
Mode = 0x01;
}
if (Index == 0)
@@ -188,8 +213,8 @@
Index++;
}
else
- //if the index is at the last address, get through CRC,
- //Data response token, and busy signal and reset the index
+ //if the index is at the last address, get through the CRC,
+ //data response token, and busy signal and reset the index
{
ChipSelect.write(0);
DataLines.write(Data);
@@ -210,12 +235,12 @@
case 0x02:
//control code 2 reads a byte
if (Mode != 0x02)
- //if previous call was not a read operation, synchronise
- //the card, start a new read block, and set function to
+ //if the previous call was not a read operation, synchronise
+ //the card, start a new read block, and set the function to
//read mode
{
Log(0, 0);
- Command(18, 0, Workspace);
+ Command(18, 0, &Workspace);
Mode = 0x02;
}
if (Index == 0)
@@ -229,55 +254,59 @@
t++;
} while ((DataLines.write(0xFF) != 0xFE)
&& (t < Timeout));
- Workspace[0] = DataLines.write(0xFF);
+ Workspace = DataLines.write(0xFF);
ChipSelect.write(1);
Index++;
- return Workspace[0];
+ return Workspace;
}
else if (Index < 511)
//if the index is between the boundaries, read the byte
{
ChipSelect.write(0);
- Workspace[0] = DataLines.write(0xFF);
+ Workspace = DataLines.write(0xFF);
ChipSelect.write(1);
Index++;
- return Workspace[0];
+ return Workspace;
}
else
- //if the index is at the last address, get through
- //CRC and reset the index
+ //if the index is at the last address, get through the CRC and
+ //reset the index
{
ChipSelect.write(0);
- Workspace[0] = DataLines.write(0xFF);
+ Workspace = DataLines.write(0xFF);
DataLines.write(0xFF);
DataLines.write(0xFF);
ChipSelect.write(1);
Index = 0;
- return Workspace[0];
+ return Workspace;
}
default:
- //undefined control codes only return stuff bits
+ //undefined control codes will only return stuff bits
return 0xFF;
}
}
unsigned char SDCard::Write(unsigned int Address, unsigned char* Data)
{
- if (!Capacity)
+ unsigned char Workspace[2];
+ //work area for card commands and data transactions
+
+ if (Capacity)
+ //send the single-block write command addressed for high-capacity cards
+ {
+ Command(24, Address, Workspace);
+ }
+ else
+ //send the single-block write command addressed for low-capacity cards
{
Command(24, Address * 512, Workspace);
}
- else
- {
- Command(24, Address, Workspace);
- }
- //send single block write command; addressing depends on version
if (Workspace[0])
- //if a command error occurs, return parameter error
+ //if a command error occurs, return "parameter error"
{ return 0x04; }
DataCRC(512, Data, Workspace);
- //calculate the data CRC
+ //calculate the CRC16
ChipSelect.write(0);
DataLines.write(0xFE);
//write start block token
@@ -288,7 +317,7 @@
}
DataLines.write(Workspace[0]);
DataLines.write(Workspace[1]);
- //write the data CRC to the card
+ //write the data CRC16
t = 0;
do
{
@@ -301,7 +330,7 @@
ChipSelect.write(1);
DataLines.write(0xFF);
if (((Workspace[0] & 0x1F) != 0x05) || (t == Timeout))
- //if data response token indicates error, return write error
+ //if the data response token indicates error, return write error
{ return 0x01; }
else
{ return 0x00; }
@@ -309,11 +338,14 @@
unsigned char SDCard::Write(
unsigned int Address, unsigned char SectorCount, unsigned char* Data)
{
+ unsigned char Workspace[5];
+ //work area for card commands and data transactions
static unsigned char CurrentSectorCount = 1;
//store the last write sector count
+
if (SectorCount != CurrentSectorCount)
- //set the expected number of write blocks if different from
- //previous operations
+ //set the expected number of write blocks if its different from
+ //previous multiple-block write operations
{
Command(55, 0, Workspace);
Command(23, SectorCount, Workspace);
@@ -321,25 +353,28 @@
{ return 0x04; }
CurrentSectorCount = SectorCount;
}
- if (!Capacity)
+ if (Capacity)
+ //send the multiple-block write command addressed for high-capacity
+ //cards
+ {
+ Command(25, Address, Workspace);
+ }
+ else
+ //send the multiple-block write command addressed for low-capacity
+ //cards
{
Command(25, Address * 512, Workspace);
}
- else
- {
- Command(25, Address, Workspace);
- }
- //send multiple block write command; addressing depends on version
if (Workspace[0])
- //if a command error occurs, return parameter error
+ //if a command error occurs, return "parameter error"
{ return 0x04; }
Workspace[4] = 0x00;
- //initialize error detection variable
+ //initialize the error detection variable
for (unsigned char i = 0; i < SectorCount; i++)
//write each data sector
{
DataCRC(512, &Data[i * 512], Workspace);
- //calculate data crc for each passed write block
+ //calculate the CRC16
ChipSelect.write(0);
DataLines.write(0xFC);
//send multiple write block start token
@@ -350,7 +385,7 @@
}
DataLines.write(Workspace[0]);
DataLines.write(Workspace[1]);
- //write the data CRC to the card
+ //write the CRC16
t = 0;
do
{
@@ -362,22 +397,22 @@
//get through the busy signal
ChipSelect.write(1);
Workspace[4] |= Workspace[0];
- //record if any write errors are detected in the data response
+ //record if any write errors that are detected in the data response
//tokens
if (t == Timeout)
- //if a block write operation gets timed out, stop operations
+ //if a block write operation times out, stop operations
{ break; }
}
ChipSelect.write(0);
DataLines.write(0xFD);
DataLines.write(0xFF);
- //send stop transmission token
+ //send the stop transmission token
while (!DataLines.write(0xFF));
- //get through busy signal
+ //get through the busy signal
ChipSelect.write(1);
DataLines.write(0xFF);
if (((Workspace[4] & 0x1F) != 0x05) || (t == Timeout))
- //if a data response token indicated an error, return write error
+ //if a data response token indicated an error, return "write error"
{ return 0x01; }
else
{ return 0x00; }
@@ -385,17 +420,21 @@
unsigned char SDCard::Read(unsigned int Address, unsigned char* Data)
{
- if (!Capacity)
+ unsigned char Workspace[4];
+ //work area for card commands and data transactions
+
+ if (Capacity)
+ //send the single-block read command addressed for high-capacity cards
+ {
+ Command(17, Address, Workspace);
+ }
+ else
+ //send the single-block read command addressed for low-capacity cards
{
Command(17, Address * 512, Workspace);
}
- else
- {
- Command(17, Address, Workspace);
- }
- //send single block read command; addressing depends on version
if (Workspace[0])
- //if a command error occurs, return parameter error
+ //if a command error occurs, return "parameter error"
{ return 0x04; }
ChipSelect.write(0);
t = 0;
@@ -403,7 +442,7 @@
{
t++;
} while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
- //get to start block token
+ //get to the start block token
if (t == Timeout) {
ChipSelect.write(1); DataLines.write(0xFF); return 0x01; }
for (unsigned short i = 0; i < 512; i++)
@@ -413,14 +452,14 @@
//read the data from the addressed card sector
Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
- //read the data CRC from the card
+ //read the CRC16
ChipSelect.write(1);
DataLines.write(0xFF);
DataCRC(512, Data, Workspace);
- //calculate the data CRC
+ //calculate the CRC16
if (CRCMode && ((Workspace[0] != Workspace[2])
|| (Workspace[1] != Workspace[3])))
- //if CRC is invalid, return read error
+ //if the CRC is invalid, return "read error"
{ return 0x01; }
else
{ return 0x00; }
@@ -428,17 +467,23 @@
unsigned char SDCard::Read(
unsigned int Address, unsigned char SectorCount, unsigned char* Data)
{
- if (!Capacity)
+ unsigned char Workspace[5];
+ //work area for card commands and data transactions
+
+ if (Capacity)
+ //send the multiple-block read command addressed for high-capacity
+ //cards
+ {
+ Command(18, Address, Workspace);
+ }
+ else
+ //send the multiple-block read command addressed for low-capacity
+ //cards
{
Command(18, Address * 512, Workspace);
}
- else
- {
- Command(18, Address, Workspace);
- }
- //send multiple block read command; addressing depends on version
if (Workspace[0])
- //if a command error occurs, return parameter error
+ //if a command error occurs, return "parameter error"
{ return 0; }
Workspace[4] = 0x00;
//initialize error detection variable
@@ -451,37 +496,37 @@
{
t++;
} while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
- //get to each data block start token
+ //get to the data block start token
if (t == Timeout)
{
break;
}
- //if a block read operation gets timed out, stop operations
+ //if a block read operation times out, stop operations
for (unsigned int j = i * 512; j < (i + 1) * 512; j++)
{
Data[j] = DataLines.write(0xFF);
}
- //read each data block
+ //read the data block
Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
//read the data CRC from the card
+ ChipSelect.write(1);
DataCRC(512, &Data[i * 512], Workspace);
- //calculate data crc for each read data block
+ //calculate the CRC16 for each read data block
Workspace[4] |= (CRCMode && ((Workspace[0] != Workspace[2])
|| (Workspace[1] != Workspace[3])));
//record if any invalid CRCs are detected during the
//transaction
}
- ChipSelect.write(1);
Command(12, 0, Workspace);
- //send stop transmission command
+ //send the stop transmission command
ChipSelect.write(0);
while (!DataLines.write(0xFF));
- //get through busy signal
+ //get through the busy signal
ChipSelect.write(1);
DataLines.write(0xFF);
if ((Workspace[4]) || (t == Timeout))
- //if an invalid CRC was detected, return read error
+ //if an invalid CRC was detected, return "read error"
{ return 0x01; }
else
{ return 0x00; }
@@ -490,6 +535,7 @@
unsigned char SDCard::SelectCRCMode(bool Mode)
{
unsigned char Response;
+
if (CRCMode != Mode)
//only send command if CRCMode has been changed
{
@@ -497,13 +543,13 @@
do
{
Command(59, Mode, &Response);
- //command 59 sets card CRC mode
+ //send the set CRC mode command
t++;
} while (Response && (t < Timeout));
CRCMode = Mode;
}
if (t == Timeout)
- //if command times out, return error
+ //if the command times out, return "error"
{ return 0x01; }
else
{ return 0x00; }
@@ -512,12 +558,14 @@
void SDCard::SetTimeout(unsigned int Retries)
{
Timeout = Retries;
+ //Set the global number of times for operations to be retried
}
unsigned char SDCard::Initialize()
{
unsigned char Workspace[5];
- //allocate space to hold data during initialization operations
+ //work area for card commands and data transactions
+
for (unsigned char i = 0; i < 16; i++)
//clock card at least 74 times to power up
{
@@ -528,11 +576,11 @@
do
{
Command(0, 0, Workspace);
- //send command 0 to put the card into SPI mode
+ //send the reset command to put the card into SPI mode
t++;
} while ((Workspace[0] != 0x01) && (t < Timeout));
//check for command acceptance
- if (t == Timeout) { return 0x01; }
+ if (t == Timeout) { Status = 0x01; return Status; }
t = 0;
do
@@ -542,23 +590,22 @@
t++;
} while ((Workspace[0] != 0x01) && (Workspace[0] != 0x05)
&& (t < Timeout));
- //command 59 is not valid for all cards in idle state
- if (t == Timeout) { return 0x01; }
+ //the set CRC mode command is not valid for all cards in idle state
+ if (t == Timeout) { Status = 0x01; return Status; }
t = 0;
do
{
Command(8, 426, Workspace);
- //voltage bits are 01h for 2.7V - 3.6V,
- //check pattern AAh, 000001AAh = 426d
+ //the voltage bits are 0x01 for 2.7V - 3.6V, the check pattern is
+ //0xAA, 0x000001AA converts to decimal 426
t++;
} while (((Workspace[0] != 0x01) || ((Workspace[3] & 0x0F) != 0x01) ||
- (Workspace[4] != 0xAA)) && (Workspace[0] != 0x05)
- && (t < Timeout));
- //check version, voltage acceptance, and check pattern
- if (t == Timeout) { return 0x01; }
+ (Workspace[4] != 0xAA)) && (Workspace[0] != 0x05) && (t < Timeout));
+ //check the version, voltage acceptance, and check pattern
+ if (t == Timeout) { Status = 0x01; return Status; }
Version = Workspace[0] != 0x05;
- //store card version
+ //store the card version
if (!Version)
{
@@ -566,10 +613,10 @@
do
{
Command(16, 512, Workspace);
- //set data-block length to 512 bytes
+ //set the data-block length to 512 bytes
t++;
} while (Workspace[0] && (t < Timeout));
- if (t == Timeout) { return 0x01; }
+ if (t == Timeout) { Status = 0x01; return Status; }
}
t = 0;
@@ -579,27 +626,26 @@
//check the OCR
t++;
} while (((Workspace[0] != 0x01) ||
- !((Workspace[2] & 0x20) || (Workspace[2] & 0x10)))
- && (t < Timeout));
- //check for correct operating voltage 3.3V
- if (t == Timeout) { return 0x01; }
+ !((Workspace[2] & 0x20) || (Workspace[2] & 0x10))) && (t < Timeout));
+ //check for the correct operating voltage, 3.3V
+ if (t == Timeout) { Status = 0x01; return Status; }
t = 0;
do
{
Command(55, 0, Workspace);
- //command 41 is application-specific
+ //initialize card command is application-specific
Command(41, 1073741824, Workspace);
- //specify host supports high capacity cards,
- //40000000h = 1073741824d
+ //specify host supports high capacity cards, 0x40000000 converts to
+ //decimal 1073741824d
t++;
} while (Workspace[0] && (t < Timeout));
- //check if card is ready
- if (t == Timeout) { return 0x01; }
+ //check if the card is ready
+ if (t == Timeout) { Status = 0x01; return Status; }
if (SelectCRCMode(1))
//turn on CRCs for all cards
- { return 0x01; }
+ { Status = 0x01; return Status; }
t = 0;
do
@@ -608,15 +654,15 @@
//check the OCR again
t++;
} while ((Workspace[0] || !(Workspace[1] & 0x80)) && (t < Timeout));
- //check power up status
- if (t == Timeout) { return 0x01; }
+ //check the power up status
+ if (t == Timeout) { Status = 0x01; return Status; }
for (unsigned char i = 0; i < 4; i++)
- //record OCR
+ //record the OCR
{
OCR[i] = Workspace[i + 1];
}
Capacity = (OCR[0] & 0x40) == 0x40;
- //record capacity
+ //record the capacity
t = 0;
do
@@ -624,43 +670,42 @@
do
{
Command(9, 0, Workspace);
- //read the card-specific-data register
+ //read the CSD
t++;
} while (Workspace[0] && (t < Timeout));
- if (t == Timeout) { return 0x01; }
+ if (t == Timeout) { Status = 0x01; return Status; }
ChipSelect.write(0);
do
{
t++;
} while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
- //get to the start-data-block token
- if (t == Timeout) {
- ChipSelect.write(1); DataLines.write(0xFF); return 0x01; }
+ //get to the start data block token
+ if (t == Timeout) { ChipSelect.write(1); DataLines.write(0xFF);
+ Status = 0x01; return Status; }
for (unsigned char i = 0; i < 16; i++)
- //gather CSD
+ //record the CSD
{
CSD[i] = DataLines.write(0xFF);
}
Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
- //save CSD CRC
+ //save the CSD CRC16
ChipSelect.write(1);
DataLines.write(0xFF);
DataCRC(16, CSD, Workspace);
- //calculate the CSD data CRC
+ //calculate the CSD CRC16
Workspace[4] = 0;
for (unsigned char i = 0; i < 15; i++)
{
Workspace[4] = CommandCRCTable[Workspace[4]] ^ CSD[i];
}
Workspace[4] = CommandCRCTable[Workspace[4]] | 0x01;
- //calculate the CSD table CRC
+ //calculate the CSD CRC7
t++;
- } while (((Workspace[0] != Workspace[2])
- || (Workspace[1] != Workspace[3]) || (Workspace[4] != CSD[15]))
- && (t < Timeout));
- //check all CSD CRCs
- if (t == Timeout) { return 0x01; }
+ } while (((Workspace[0] != Workspace[2]) || (Workspace[1] != Workspace[3])
+ || (Workspace[4] != CSD[15])) && (t < Timeout));
+ //perform all CSD CRCs
+ if (t == Timeout) { Status = 0x01; return Status; }
if (((CSD[3] & 0x07) > 0x02) ||
(((CSD[3] & 0x78) > 0x30) && ((CSD[3] & 0x07) > 0x01)))
@@ -675,7 +720,7 @@
for (unsigned char i = 0; i < (CSD[3] & 0x07); i++)
{
Workspace[0] *= 10;
- //first three bits are a power of ten multiplier for speed
+ //the first three bits are a power of ten multiplier for speed
}
switch (CSD[3] & 0x78)
{
@@ -709,8 +754,8 @@
t++;
} while (Workspace[0] && (Workspace[0] != 0x04) && (t < Timeout));
//some cards that support switch class commands respond with
- //illegal command
- if (t == Timeout) { return 0x01; }
+ //"illegal command"
+ if (t == Timeout) { Status = 0x01; return Status; }
if (!Workspace[0])
{
do
@@ -720,57 +765,58 @@
{
t++;
} while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
- //get to the start-data-block token
+ //get to the start data block token
if (t == Timeout) { ChipSelect.write(1);
- DataLines.write(0xFF); return 0x01; }
+ DataLines.write(0xFF); Status = 0x01; return Status; }
for (unsigned char i = 0; i < 64; i++)
- //gather function-status register
+ //gather the function status register
{
FSR[i] = DataLines.write(0xFF);
}
Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
- //record data CRC
+ //record the CRC16
ChipSelect.write(1);
DataLines.write(0xFF);
DataCRC(64, FSR, Workspace);
- //calculate CRC
+ //calculate the CRC16
t++;
} while (((Workspace[0] != Workspace[2])
|| (Workspace[1] != Workspace[3])) && (t < Timeout));
- //complete CRC
- if (t == Timeout) { return 0x01; }
+ //perform the CRC
+ if (t == Timeout) { Status = 0x01; return Status; }
if ((FSR[13] & 0x02) && ((FSR[16] & 0x0F) == 0x01))
{
DataLines.frequency(50000000);
- //increase speed if function switch was successful
+ //increase the speed if the function switch was successful
}
}
}
if (SelectCRCMode(0))
- { return 0x01; }
+ { Status = 0x01; return Status; }
//turn off CRCs
- return 0x00;
+ Status = 0x00;
+ return Status;
}
-void SDCard::Command(unsigned char Index,
- unsigned int Argument, unsigned char* Response)
+void SDCard::Command(
+ unsigned char Index, unsigned int Argument, unsigned char* Response)
{
CommandCRC(&Index, &Argument, Response);
- //calculate command CRC
+ //calculate the CRC7
ChipSelect.write(0);
- //assert chip select low to synchronize command
+ //assert chip select low to synchronize the command
DataLines.write(0x40 | Index);
- //the index is assumed valid, commands start with "01b"
+ //the index is assumed valid, commands start with bits 01
DataLines.write(((char*)&Argument)[3]);
DataLines.write(((char*)&Argument)[2]);
DataLines.write(((char*)&Argument)[1]);
DataLines.write(((char*)&Argument)[0]);
//send the argument bytes in order from MSB to LSB
DataLines.write(*Response);
- //send the command CRC
+ //send the CRC7
t = 0;
do
{
@@ -794,8 +840,8 @@
//clock the deselected card high to complete processing for some cards
}
-void SDCard::CommandCRC(unsigned char* IndexPtr,
- unsigned int* ArgumentPtr, unsigned char* Result)
+void SDCard::CommandCRC(
+ unsigned char* IndexPtr, unsigned int* ArgumentPtr, unsigned char* Result)
{
if (CRCMode)
//only calculate if data-checks are desired
@@ -812,10 +858,10 @@
] ^ ((char*)ArgumentPtr)[1]
] ^ ((char*)ArgumentPtr)[0]
] | 0x01;
- //calculate CRC, SD card protocol requires last bit to be 1
+ //calculate the CRC7, SD protocol requires the last bit to be high
}
else
- //record stuff bits if no data-checking is desired
+ //if no data-checking is desired, the return bits are not used
{
Result[0] = 0xFF;
}
@@ -828,22 +874,22 @@
//only calculate if data-checks are desired
{
unsigned char Reference;
- //store the current CRC lookup value
+ //store the current CRC16 lookup value
Result[0] = 0x00;
Result[1] = 0x00;
- //initialize result carrier
+ //initialize the result carrier
for (unsigned short i = 0; i < Length; i++)
//step through each byte of the data to be checked
{
Reference = Result[0];
- //record current crc lookup for both bytes
+ //record the current CRC16 lookup for both bytes
Result[0] = DataCRCTable[2 * Reference] ^ Result[1];
- //fist byte result is exclusive ored with old second byte
+ //the first byte result is XORed with the old second byte
Result[1] = DataCRCTable[(2 * Reference) + 1] ^ Data[i];
- //second byte result is exclusive ored with new data byte
+ //the second byte result is XORed with the new data byte
}
for (unsigned char i = 0; i < 2; i++)
- //the final result must be exclusive ored with two 0x00 bytes
+ //the final result must be XORed with two 0x00 bytes
{
Reference = Result[0];
Result[0] = DataCRCTable[2 * Reference] ^ Result[1];
@@ -851,7 +897,7 @@
}
}
else
- //record stuff bits if no data-checking is desired
+ //if no data-checking is desired, the return bits are not used
{
Result[0] = 0xFF;
Result[1] = 0xFF;
@@ -862,10 +908,10 @@
unsigned long long Generator, unsigned char* Table)
{
unsigned char Index[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
- //this will hold information from the generator; the position
- //indicates the order of the encountered 1, the value indicates
- //its position in the generator, the 9th entry indicates the
- //number of 1's encountered
+ //this will hold information from the generator; the position indicates
+ //the order of the encountered 1, the value indicates its position in
+ //the generator, the 9th entry indicates the number of 1's encountered
+
for (unsigned char i = 0; i < 64; i++)
//shift generator left until the first bit is high
{
@@ -882,22 +928,22 @@
//increment through each generator bit
{
if ((0x80 >> i) & ((unsigned char*)&Generator)[7])
- //if a 1 is encountered in the generator
+ //if a 1 is encountered in the generator, record its order and
+ //location and increment the counter
{
Index[Index[8]] = i;
Index[8]++;
- //record its order and location and increment the counter
}
for (unsigned char j = 0; j < (0x01 << i); j++)
- //each bit doubles the number of exclusive or operations
+ //each bit doubles the number of XOR operations
{
for (unsigned char k = 0; k < Size; k++)
//we need to precalculate each byte in the CRC table
{
Table[(Size * ((0x01 << i) + j)) + k]
= Table[(Size * j) + k];
- //each power of two is equal to all previous entries
- //with an added exclusive or on the leftmost bit and
+ //each power of two is equal to all previous entries with
+ //an added XOR with the generator on the leftmost bit and
//on each succeeding 1 in the generator
for (unsigned char l = 0; l < Index[8]; l++)
//increment through the encountered generator 1s
@@ -908,7 +954,7 @@
Table[(Size * ((0x01 << i) + j)) + k] ^=
(((unsigned char*)&Generator)[6-k]
>> (7 - i + Index[l]));
- //xor the new bit and the new generator 1s
+ //XOR the new bit and the new generator 1s
}
}
}
diff -r d85e20b6b904 -r ddf09d859ed7 SDCard.h
--- a/SDCard.h Sat Jan 15 05:58:22 2011 +0000
+++ b/SDCard.h Sun Jan 16 09:20:30 2011 +0000
@@ -10,54 +10,57 @@
#include "mbed.h"
#include "FATFileSystem.h"
-class SDCard : private FATFileSystem
+class SDCard : public FATFileSystem
{
private:
SPI DataLines;
DigitalOut ChipSelect;
//physical chip interface
- unsigned char CommandCRCTable[256];
- //CRC7 lookup table
- unsigned char DataCRCTable[512];
- //CRC16 CCITT lookup table
- unsigned char OCR[4];
- //operating conditions register
- unsigned char CSD[16];
- //card-specific data register
+
+ unsigned int t;
+ //timeout counter
+ unsigned int Timeout;
+ //timeout limit
+ bool CRCMode;
+ //low: CRCs disabled, high: CRCs enabled
+ bool Capacity;
+ //low: low-capacity, high: high-capacity
+ bool Version;
+ //low: version 1, high: version 2
+ unsigned char Status;
+ //0x00: Ready, 0x01: not initialized
unsigned char FSR[64];
//function status register
- bool Version;
- //card version, low for 1, high for 2
- bool Capacity;
- //low for low-capacity, high for high-capacity
- bool CRCMode;
- //low to disable CRCs, high to enable CRCs
- unsigned int Timeout;
- //timeout limit
- unsigned int t;
- //timeout counter
- unsigned char Workspace[5];
- //all-purpose work area
+ unsigned char CSD[16];
+ //card-specific data register
+ unsigned char OCR[4];
+ //operating conditions register
+ unsigned char DataCRCTable[512];
+ //CRC16 CCITT lookup table
+ unsigned char CommandCRCTable[256];
+ //CRC7 SD command lookup table
unsigned char Initialize();
//complete all initialization operations
void Command(unsigned char Index,
unsigned int Argument, unsigned char* Response);
- //sends command to the SD card
+ //sends the SD command with the given Index and Argument to the SD
+ //card and stores the SD Response
void CommandCRC(unsigned char* IndexPtr,
unsigned int* ArgumentPtr, unsigned char* Result);
- //calculates the SD card proprietary CRC7 result of an SD card
- //command, records one-byte solution in Result
- void DataCRC(unsigned short Length,
- unsigned char* Data, unsigned char* Result);
- //calculates the CRC16 result of the number of bytes in Data
- //given by Length and stores the two-byte solution in Result,
+ //calculates the SD proprietary CRC7 result of an SD command
+ //(composed of a command index and argument) and stores the one-
+ //byte solution in Result
+ void DataCRC(
+ unsigned short Length, unsigned char* Data, unsigned char* Result);
+ //calculates the CRC16 CCITT result of the number of bytes in Data
+ //given by Length and stores the two-byte solution in Result
//assumes DataCRCTable has already been calculated
void GenerateCRCTable(unsigned char Size,
unsigned long long Generator, unsigned char* Table);
- //pre-calculates CRC results for efficient checking, assumes
- //pre-allocated Table is large enough to hold the number of
- //bytes given in Size
+ //pre-calculates CRC results from the given Generator for efficient
+ //checking; assumes pre-allocated Table is large enough to hold the
+ //number of bytes given in Size
virtual unsigned char disk_initialize();
virtual unsigned char disk_status();
@@ -69,41 +72,49 @@
virtual unsigned long disk_sector_count();
virtual unsigned short disk_sector_size();
virtual unsigned long disk_block_size();
- //FAT system virtual function definitions, called by FAT module
+ //FAT system virtual functions that are called by the FAT module
public:
SDCard(PinName mosi, PinName miso, PinName sck, PinName cs,
const char* DiskName);
- //constructor requires SPI and DigitalOut pins, and a
- //directory name
+ //constructor needs SPI pins, DigitalOut pins, and a directory name
virtual ~SDCard();
- //destructor deallocates tables and workspace
+ //destructor deallocates tables and registers
+ unsigned char Format(unsigned int AllocationUnit);
+ //formats the card FAT with given AllocationUnit in sectors; the
+ //maximum is 32768 sectors
unsigned char Log(unsigned char Control, unsigned char Data);
- //multipurpose raw data-logging method with three modes
+ //multipurpose single-byte raw data-logging method with three modes
//Control description
// 0 synchronizes card and resets internal counter to
- // finalize I/O operations
- // 1 successively write input to a raw data byte in
- // order starting at address 0
- // 2 successively read and return a raw data byte in
- // order starting at address 0
- //return data from sync or write operations, and input
- //data of sync or read operations are stuff bits
+ // finalize read or write operations
+ // 1 successively write Data to a raw byte address in order
+ // starting at address 0
+ // 2 successively read and return a raw data byte in order
+ // starting at address 0
+ //return byte from sync or write operations and input Data of sync
+ //or read operations are not used; writing with this function will
+ //deformat the drive
unsigned char Write(unsigned int Address, unsigned char* Data);
- //write single 512B sector to card at Address from Data
+ //write the first 512 byte sector of Data to the card at the given
+ //Address
unsigned char Write(unsigned int Address,
unsigned char SectorCount, unsigned char* Data);
- //write SectorCount 512B sectors to card at Address from Data
+ //write the first given SectorCount of 512 byte sectors of Data to
+ //the card at the given Address
unsigned char Read(unsigned int Address, unsigned char* Data);
- //read single 512B sector from card at Address into Data
+ //read the first 512 byte sector from card at the given Address
+ //into Data
unsigned char Read(unsigned int Address,
unsigned char SectorCount, unsigned char* Data);
- //read SectorCount 512B sectors from card at Address into Data
+ //read the first given SectorCount of 512 byte sectors from the
+ //card at the given Address into Data
unsigned char SelectCRCMode(bool Mode);
- //toggle CRC mode; high for on or low for off, default is off
+ //toggle CRC mode; low: CRCs disabled, high: CRCs enabled, default:
+ //CRCs disabled
void SetTimeout(unsigned int Retries);
- //change the number of retries for interface functions;
- //increase if lines are unreliable; default is 1024
+ //change the number of retries for interface functions; increase if
+ //lines are unreliable; default: 1024, minimum: 1024
};
#endif
\ No newline at end of file
diff -r d85e20b6b904 -r ddf09d859ed7 main.cpp
--- a/main.cpp Sat Jan 15 05:58:22 2011 +0000
+++ b/main.cpp Sun Jan 16 09:20:30 2011 +0000
@@ -17,10 +17,15 @@
Logger.SelectCRCMode(1);
+ //for(int i = 0;i<1000;i++)
+ //{Logger.Log(1, i);}
+ //Logger.Format(32768);
+
//mkdir("/SDCard/testdir", 1023);
FILE *fp = fopen("/SDCard/message.txt", "w");
fprintf(fp, "Hello, World!");
fclose(fp);
+
/*DIR *d = opendir("/SDCard/testdir");
struct dirent *p;
while ((p = readdir(d)) != NULL)
@@ -29,11 +34,11 @@
}
closedir(d);
remove("/SDCard/testdir/TEST.txt");*/
- //int test = rename("/SDCard/message.txt", "/SDCard/message2.txt");
-
- //fp = fopen("/SDCard/message.txt", "a");
- //fprintf(fp, " result = %d", test);
- //fclose(fp);
+
+ /*int test = rename("/SDCard/message.txt", "/SDCard/message2.txt");
+ fp = fopen("/SDCard/message.txt", "a");
+ fprintf(fp, " Result = %d", test);
+ fclose(fp);*/
/////////////////////
if (1)