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FATFileSystem/ChaN/ff.h@0:8b2a15992487, 2020-01-28 (annotated)

Committer:: adrevong
Date:: Tue Jan 28 11:14:21 2020 +0000
Revision:: 0:8b2a15992487

Who changed what in which revision?

User	Revision	Line number	New contents of line
adrevong	0:8b2a15992487	1	/*---------------------------------------------------------------------------/
adrevong	0:8b2a15992487	2	/ FatFs - FAT file system module include R0.11a (C)ChaN, 2015
adrevong	0:8b2a15992487	3	/----------------------------------------------------------------------------/
adrevong	0:8b2a15992487	4	/ FatFs module is a free software that opened under license policy of
adrevong	0:8b2a15992487	5	/ following conditions.
adrevong	0:8b2a15992487	6	/
adrevong	0:8b2a15992487	7	/ Copyright (C) 2015, ChaN, all right reserved.
adrevong	0:8b2a15992487	8	/
adrevong	0:8b2a15992487	9	/ 1. Redistributions of source code must retain the above copyright notice,
adrevong	0:8b2a15992487	10	/ this condition and the following disclaimer.
adrevong	0:8b2a15992487	11	/
adrevong	0:8b2a15992487	12	/ This software is provided by the copyright holder and contributors "AS IS"
adrevong	0:8b2a15992487	13	/ and any warranties related to this software are DISCLAIMED.
adrevong	0:8b2a15992487	14	/ The copyright owner or contributors be NOT LIABLE for any damages caused
adrevong	0:8b2a15992487	15	/ by use of this software.
adrevong	0:8b2a15992487	16	/---------------------------------------------------------------------------*/
adrevong	0:8b2a15992487	17
adrevong	0:8b2a15992487	18
adrevong	0:8b2a15992487	19	#ifndef _FATFS
adrevong	0:8b2a15992487	20	#define _FATFS 64180 /* Revision ID */
adrevong	0:8b2a15992487	21
adrevong	0:8b2a15992487	22	#ifdef __cplusplus
adrevong	0:8b2a15992487	23	extern "C" {
adrevong	0:8b2a15992487	24	#endif
adrevong	0:8b2a15992487	25
adrevong	0:8b2a15992487	26	#include "integer.h" /* Basic integer types */
adrevong	0:8b2a15992487	27	#include "ffconf.h" /* FatFs configuration options */
adrevong	0:8b2a15992487	28	#if _FATFS != _FFCONF
adrevong	0:8b2a15992487	29	#error Wrong configuration file (ffconf.h).
adrevong	0:8b2a15992487	30	#endif
adrevong	0:8b2a15992487	31
adrevong	0:8b2a15992487	32
adrevong	0:8b2a15992487	33
adrevong	0:8b2a15992487	34	/* Definitions of volume management */
adrevong	0:8b2a15992487	35
adrevong	0:8b2a15992487	36	#if _MULTI_PARTITION /* Multiple partition configuration */
adrevong	0:8b2a15992487	37	typedef struct {
adrevong	0:8b2a15992487	38	BYTE pd; /* Physical drive number */
adrevong	0:8b2a15992487	39	BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
adrevong	0:8b2a15992487	40	} PARTITION;
adrevong	0:8b2a15992487	41	extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
adrevong	0:8b2a15992487	42	#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
adrevong	0:8b2a15992487	43	#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
adrevong	0:8b2a15992487	44
adrevong	0:8b2a15992487	45	#else /* Single partition configuration */
adrevong	0:8b2a15992487	46	#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
adrevong	0:8b2a15992487	47	#define LD2PT(vol) 0 /* Find first valid partition or in SFD */
adrevong	0:8b2a15992487	48
adrevong	0:8b2a15992487	49	#endif
adrevong	0:8b2a15992487	50
adrevong	0:8b2a15992487	51
adrevong	0:8b2a15992487	52
adrevong	0:8b2a15992487	53	/* Type of path name strings on FatFs API */
adrevong	0:8b2a15992487	54
adrevong	0:8b2a15992487	55	#if _LFN_UNICODE /* Unicode string */
adrevong	0:8b2a15992487	56	#if !_USE_LFN
adrevong	0:8b2a15992487	57	#error _LFN_UNICODE must be 0 at non-LFN cfg.
adrevong	0:8b2a15992487	58	#endif
adrevong	0:8b2a15992487	59	#ifndef _INC_TCHAR
adrevong	0:8b2a15992487	60	typedef WCHAR TCHAR;
adrevong	0:8b2a15992487	61	#define _T(x) L ## x
adrevong	0:8b2a15992487	62	#define _TEXT(x) L ## x
adrevong	0:8b2a15992487	63	#endif
adrevong	0:8b2a15992487	64
adrevong	0:8b2a15992487	65	#else /* ANSI/OEM string */
adrevong	0:8b2a15992487	66	#ifndef _INC_TCHAR
adrevong	0:8b2a15992487	67	typedef char TCHAR;
adrevong	0:8b2a15992487	68	#define _T(x) x
adrevong	0:8b2a15992487	69	#define _TEXT(x) x
adrevong	0:8b2a15992487	70	#endif
adrevong	0:8b2a15992487	71
adrevong	0:8b2a15992487	72	#endif
adrevong	0:8b2a15992487	73
adrevong	0:8b2a15992487	74
adrevong	0:8b2a15992487	75
adrevong	0:8b2a15992487	76	/* File system object structure (FATFS) */
adrevong	0:8b2a15992487	77
adrevong	0:8b2a15992487	78	typedef struct {
adrevong	0:8b2a15992487	79	BYTE fs_type; /* FAT sub-type (0:Not mounted) */
adrevong	0:8b2a15992487	80	BYTE drv; /* Physical drive number */
adrevong	0:8b2a15992487	81	BYTE csize; /* Sectors per cluster (1,2,4...128) */
adrevong	0:8b2a15992487	82	BYTE n_fats; /* Number of FAT copies (1 or 2) */
adrevong	0:8b2a15992487	83	BYTE wflag; /* win[] flag (b0:dirty) */
adrevong	0:8b2a15992487	84	BYTE fsi_flag; /* FSINFO flags (b7:disabled, b0:dirty) */
adrevong	0:8b2a15992487	85	WORD id; /* File system mount ID */
adrevong	0:8b2a15992487	86	WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
adrevong	0:8b2a15992487	87	#if _MAX_SS != _MIN_SS
adrevong	0:8b2a15992487	88	WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */
adrevong	0:8b2a15992487	89	#endif
adrevong	0:8b2a15992487	90	#if _FS_REENTRANT
adrevong	0:8b2a15992487	91	_SYNC_t sobj; /* Identifier of sync object */
adrevong	0:8b2a15992487	92	#endif
adrevong	0:8b2a15992487	93	#if !_FS_READONLY
adrevong	0:8b2a15992487	94	DWORD last_clust; /* Last allocated cluster */
adrevong	0:8b2a15992487	95	DWORD free_clust; /* Number of free clusters */
adrevong	0:8b2a15992487	96	#endif
adrevong	0:8b2a15992487	97	#if _FS_RPATH
adrevong	0:8b2a15992487	98	DWORD cdir; /* Current directory start cluster (0:root) */
adrevong	0:8b2a15992487	99	#endif
adrevong	0:8b2a15992487	100	DWORD n_fatent; /* Number of FAT entries, = number of clusters + 2 */
adrevong	0:8b2a15992487	101	DWORD fsize; /* Sectors per FAT */
adrevong	0:8b2a15992487	102	DWORD volbase; /* Volume start sector */
adrevong	0:8b2a15992487	103	DWORD fatbase; /* FAT start sector */
adrevong	0:8b2a15992487	104	DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
adrevong	0:8b2a15992487	105	DWORD database; /* Data start sector */
adrevong	0:8b2a15992487	106	DWORD winsect; /* Current sector appearing in the win[] */
adrevong	0:8b2a15992487	107	BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
adrevong	0:8b2a15992487	108	} FATFS;
adrevong	0:8b2a15992487	109
adrevong	0:8b2a15992487	110
adrevong	0:8b2a15992487	111
adrevong	0:8b2a15992487	112	/* File object structure (FIL) */
adrevong	0:8b2a15992487	113
adrevong	0:8b2a15992487	114	typedef struct {
adrevong	0:8b2a15992487	115	FATFS* fs; /* Pointer to the related file system object (do not change order) */
adrevong	0:8b2a15992487	116	WORD id; /* Owner file system mount ID (do not change order) */
adrevong	0:8b2a15992487	117	BYTE flag; /* Status flags */
adrevong	0:8b2a15992487	118	BYTE err; /* Abort flag (error code) */
adrevong	0:8b2a15992487	119	DWORD fptr; /* File read/write pointer (Zeroed on file open) */
adrevong	0:8b2a15992487	120	DWORD fsize; /* File size */
adrevong	0:8b2a15992487	121	DWORD sclust; /* File start cluster (0:no cluster chain, always 0 when fsize is 0) */
adrevong	0:8b2a15992487	122	DWORD clust; /* Current cluster of fpter (not valid when fprt is 0) */
adrevong	0:8b2a15992487	123	DWORD dsect; /* Sector number appearing in buf[] (0:invalid) */
adrevong	0:8b2a15992487	124	#if !_FS_READONLY
adrevong	0:8b2a15992487	125	DWORD dir_sect; /* Sector number containing the directory entry */
adrevong	0:8b2a15992487	126	BYTE* dir_ptr; /* Pointer to the directory entry in the win[] */
adrevong	0:8b2a15992487	127	#endif
adrevong	0:8b2a15992487	128	#if _USE_FASTSEEK
adrevong	0:8b2a15992487	129	DWORD* cltbl; /* Pointer to the cluster link map table (Nulled on file open) */
adrevong	0:8b2a15992487	130	#endif
adrevong	0:8b2a15992487	131	#if _FS_LOCK
adrevong	0:8b2a15992487	132	UINT lockid; /* File lock ID origin from 1 (index of file semaphore table Files[]) */
adrevong	0:8b2a15992487	133	#endif
adrevong	0:8b2a15992487	134	#if !_FS_TINY
adrevong	0:8b2a15992487	135	BYTE buf[_MAX_SS]; /* File private data read/write window */
adrevong	0:8b2a15992487	136	#endif
adrevong	0:8b2a15992487	137	} FIL;
adrevong	0:8b2a15992487	138
adrevong	0:8b2a15992487	139
adrevong	0:8b2a15992487	140
adrevong	0:8b2a15992487	141	/* Directory object structure (FATFS_DIR) */
adrevong	0:8b2a15992487	142
adrevong	0:8b2a15992487	143	typedef struct {
adrevong	0:8b2a15992487	144	FATFS* fs; /* Pointer to the owner file system object (do not change order) */
adrevong	0:8b2a15992487	145	WORD id; /* Owner file system mount ID (do not change order) */
adrevong	0:8b2a15992487	146	WORD index; /* Current read/write index number */
adrevong	0:8b2a15992487	147	DWORD sclust; /* Table start cluster (0:Root dir) */
adrevong	0:8b2a15992487	148	DWORD clust; /* Current cluster */
adrevong	0:8b2a15992487	149	DWORD sect; /* Current sector */
adrevong	0:8b2a15992487	150	BYTE* dir; /* Pointer to the current SFN entry in the win[] */
adrevong	0:8b2a15992487	151	BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
adrevong	0:8b2a15992487	152	#if _FS_LOCK
adrevong	0:8b2a15992487	153	UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
adrevong	0:8b2a15992487	154	#endif
adrevong	0:8b2a15992487	155	#if _USE_LFN
adrevong	0:8b2a15992487	156	WCHAR* lfn; /* Pointer to the LFN working buffer */
adrevong	0:8b2a15992487	157	WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
adrevong	0:8b2a15992487	158	#endif
adrevong	0:8b2a15992487	159	#if _USE_FIND
adrevong	0:8b2a15992487	160	const TCHAR* pat; /* Pointer to the name matching pattern */
adrevong	0:8b2a15992487	161	#endif
adrevong	0:8b2a15992487	162	} FATFS_DIR;
adrevong	0:8b2a15992487	163
adrevong	0:8b2a15992487	164
adrevong	0:8b2a15992487	165
adrevong	0:8b2a15992487	166	/* File information structure (FILINFO) */
adrevong	0:8b2a15992487	167
adrevong	0:8b2a15992487	168	typedef struct {
adrevong	0:8b2a15992487	169	DWORD fsize; /* File size */
adrevong	0:8b2a15992487	170	WORD fdate; /* Last modified date */
adrevong	0:8b2a15992487	171	WORD ftime; /* Last modified time */
adrevong	0:8b2a15992487	172	BYTE fattrib; /* Attribute */
adrevong	0:8b2a15992487	173	TCHAR fname[13]; /* Short file name (8.3 format) */
adrevong	0:8b2a15992487	174	#if _USE_LFN
adrevong	0:8b2a15992487	175	TCHAR* lfname; /* Pointer to the LFN buffer */
adrevong	0:8b2a15992487	176	UINT lfsize; /* Size of LFN buffer in TCHAR */
adrevong	0:8b2a15992487	177	#endif
adrevong	0:8b2a15992487	178	} FILINFO;
adrevong	0:8b2a15992487	179
adrevong	0:8b2a15992487	180
adrevong	0:8b2a15992487	181
adrevong	0:8b2a15992487	182	/* File function return code (FRESULT) */
adrevong	0:8b2a15992487	183
adrevong	0:8b2a15992487	184	typedef enum {
adrevong	0:8b2a15992487	185	FR_OK = 0, /* (0) Succeeded */
adrevong	0:8b2a15992487	186	FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
adrevong	0:8b2a15992487	187	FR_INT_ERR, /* (2) Assertion failed */
adrevong	0:8b2a15992487	188	FR_NOT_READY, /* (3) The physical drive cannot work */
adrevong	0:8b2a15992487	189	FR_NO_FILE, /* (4) Could not find the file */
adrevong	0:8b2a15992487	190	FR_NO_PATH, /* (5) Could not find the path */
adrevong	0:8b2a15992487	191	FR_INVALID_NAME, /* (6) The path name format is invalid */
adrevong	0:8b2a15992487	192	FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
adrevong	0:8b2a15992487	193	FR_EXIST, /* (8) Access denied due to prohibited access */
adrevong	0:8b2a15992487	194	FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
adrevong	0:8b2a15992487	195	FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
adrevong	0:8b2a15992487	196	FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
adrevong	0:8b2a15992487	197	FR_NOT_ENABLED, /* (12) The volume has no work area */
adrevong	0:8b2a15992487	198	FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
adrevong	0:8b2a15992487	199	FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
adrevong	0:8b2a15992487	200	FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
adrevong	0:8b2a15992487	201	FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
adrevong	0:8b2a15992487	202	FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
adrevong	0:8b2a15992487	203	FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_LOCK */
adrevong	0:8b2a15992487	204	FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
adrevong	0:8b2a15992487	205	} FRESULT;
adrevong	0:8b2a15992487	206
adrevong	0:8b2a15992487	207
adrevong	0:8b2a15992487	208
adrevong	0:8b2a15992487	209	/--------------------------------------------------------------/
adrevong	0:8b2a15992487	210	/* FatFs module application interface */
adrevong	0:8b2a15992487	211
adrevong	0:8b2a15992487	212	FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode); /* Open or create a file */
adrevong	0:8b2a15992487	213	FRESULT f_close (FIL* fp); /* Close an open file object */
adrevong	0:8b2a15992487	214	FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br); /* Read data from a file */
adrevong	0:8b2a15992487	215	FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw); /* Write data to a file */
adrevong	0:8b2a15992487	216	FRESULT f_forward (FIL* fp, UINT(func)(const BYTE,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
adrevong	0:8b2a15992487	217	FRESULT f_lseek (FIL* fp, DWORD ofs); /* Move file pointer of a file object */
adrevong	0:8b2a15992487	218	FRESULT f_truncate (FIL* fp); /* Truncate file */
adrevong	0:8b2a15992487	219	FRESULT f_sync (FIL* fp); /* Flush cached data of a writing file */
adrevong	0:8b2a15992487	220	FRESULT f_opendir (FATFS_DIR* dp, const TCHAR* path); /* Open a directory */
adrevong	0:8b2a15992487	221	FRESULT f_closedir (FATFS_DIR* dp); /* Close an open directory */
adrevong	0:8b2a15992487	222	FRESULT f_readdir (FATFS_DIR* dp, FILINFO* fno); /* Read a directory item */
adrevong	0:8b2a15992487	223	FRESULT f_findfirst (FATFS_DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */
adrevong	0:8b2a15992487	224	FRESULT f_findnext (FATFS_DIR* dp, FILINFO* fno); /* Find next file */
adrevong	0:8b2a15992487	225	FRESULT f_mkdir (const TCHAR* path); /* Create a sub directory */
adrevong	0:8b2a15992487	226	FRESULT f_unlink (const TCHAR* path); /* Delete an existing file or directory */
adrevong	0:8b2a15992487	227	FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */
adrevong	0:8b2a15992487	228	FRESULT f_stat (const TCHAR* path, FILINFO* fno); /* Get file status */
adrevong	0:8b2a15992487	229	FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of the file/dir */
adrevong	0:8b2a15992487	230	FRESULT f_utime (const TCHAR* path, const FILINFO* fno); /* Change times-tamp of the file/dir */
adrevong	0:8b2a15992487	231	FRESULT f_chdir (const TCHAR* path); /* Change current directory */
adrevong	0:8b2a15992487	232	FRESULT f_chdrive (const TCHAR* path); /* Change current drive */
adrevong	0:8b2a15992487	233	FRESULT f_getcwd (TCHAR* buff, UINT len); /* Get current directory */
adrevong	0:8b2a15992487	234	FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */
adrevong	0:8b2a15992487	235	FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn); /* Get volume label */
adrevong	0:8b2a15992487	236	FRESULT f_setlabel (const TCHAR* label); /* Set volume label */
adrevong	0:8b2a15992487	237	FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt); /* Mount/Unmount a logical drive */
adrevong	0:8b2a15992487	238	FRESULT f_mkfs (const TCHAR* path, BYTE sfd, UINT au); /* Create a file system on the volume */
adrevong	0:8b2a15992487	239	FRESULT f_fdisk (BYTE pdrv, const DWORD szt[], void* work); /* Divide a physical drive into some partitions */
adrevong	0:8b2a15992487	240	int f_putc (TCHAR c, FIL* fp); /* Put a character to the file */
adrevong	0:8b2a15992487	241	int f_puts (const TCHAR* str, FIL* cp); /* Put a string to the file */
adrevong	0:8b2a15992487	242	int f_printf (FIL* fp, const TCHAR* str, ...); /* Put a formatted string to the file */
adrevong	0:8b2a15992487	243	TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the file */
adrevong	0:8b2a15992487	244
adrevong	0:8b2a15992487	245	#define f_eof(fp) ((int)((fp)->fptr == (fp)->fsize))
adrevong	0:8b2a15992487	246	#define f_error(fp) ((fp)->err)
adrevong	0:8b2a15992487	247	#define f_tell(fp) ((fp)->fptr)
adrevong	0:8b2a15992487	248	#define f_size(fp) ((fp)->fsize)
adrevong	0:8b2a15992487	249	#define f_rewind(fp) f_lseek((fp), 0)
adrevong	0:8b2a15992487	250	#define f_rewinddir(dp) f_readdir((dp), 0)
adrevong	0:8b2a15992487	251
adrevong	0:8b2a15992487	252	#ifndef EOF
adrevong	0:8b2a15992487	253	#define EOF (-1)
adrevong	0:8b2a15992487	254	#endif
adrevong	0:8b2a15992487	255
adrevong	0:8b2a15992487	256
adrevong	0:8b2a15992487	257
adrevong	0:8b2a15992487	258
adrevong	0:8b2a15992487	259	/--------------------------------------------------------------/
adrevong	0:8b2a15992487	260	/* Additional user defined functions */
adrevong	0:8b2a15992487	261
adrevong	0:8b2a15992487	262	/* RTC function */
adrevong	0:8b2a15992487	263	#if !_FS_READONLY && !_FS_NORTC
adrevong	0:8b2a15992487	264	DWORD get_fattime (void);
adrevong	0:8b2a15992487	265	#endif
adrevong	0:8b2a15992487	266
adrevong	0:8b2a15992487	267	/* Unicode support functions */
adrevong	0:8b2a15992487	268	#if _USE_LFN /* Unicode - OEM code conversion */
adrevong	0:8b2a15992487	269	WCHAR ff_convert (WCHAR chr, UINT dir); /* OEM-Unicode bidirectional conversion */
adrevong	0:8b2a15992487	270	WCHAR ff_wtoupper (WCHAR chr); /* Unicode upper-case conversion */
adrevong	0:8b2a15992487	271	#if _USE_LFN == 3 /* Memory functions */
adrevong	0:8b2a15992487	272	void* ff_memalloc (UINT msize); /* Allocate memory block */
adrevong	0:8b2a15992487	273	void ff_memfree (void* mblock); /* Free memory block */
adrevong	0:8b2a15992487	274	#endif
adrevong	0:8b2a15992487	275	#endif
adrevong	0:8b2a15992487	276
adrevong	0:8b2a15992487	277	/* Sync functions */
adrevong	0:8b2a15992487	278	#if _FS_REENTRANT
adrevong	0:8b2a15992487	279	int ff_cre_syncobj (BYTE vol, _SYNC_t* sobj); /* Create a sync object */
adrevong	0:8b2a15992487	280	int ff_req_grant (_SYNC_t sobj); /* Lock sync object */
adrevong	0:8b2a15992487	281	void ff_rel_grant (_SYNC_t sobj); /* Unlock sync object */
adrevong	0:8b2a15992487	282	int ff_del_syncobj (_SYNC_t sobj); /* Delete a sync object */
adrevong	0:8b2a15992487	283	#endif
adrevong	0:8b2a15992487	284
adrevong	0:8b2a15992487	285
adrevong	0:8b2a15992487	286
adrevong	0:8b2a15992487	287
adrevong	0:8b2a15992487	288	/--------------------------------------------------------------/
adrevong	0:8b2a15992487	289	/* Flags and offset address */
adrevong	0:8b2a15992487	290
adrevong	0:8b2a15992487	291
adrevong	0:8b2a15992487	292	/* File access control and file status flags (FIL.flag) */
adrevong	0:8b2a15992487	293
adrevong	0:8b2a15992487	294	#define FA_READ 0x01
adrevong	0:8b2a15992487	295	#define FA_OPEN_EXISTING 0x00
adrevong	0:8b2a15992487	296
adrevong	0:8b2a15992487	297	#if !_FS_READONLY
adrevong	0:8b2a15992487	298	#define FA_WRITE 0x02
adrevong	0:8b2a15992487	299	#define FA_CREATE_NEW 0x04
adrevong	0:8b2a15992487	300	#define FA_CREATE_ALWAYS 0x08
adrevong	0:8b2a15992487	301	#define FA_OPEN_ALWAYS 0x10
adrevong	0:8b2a15992487	302	#define FA__WRITTEN 0x20
adrevong	0:8b2a15992487	303	#define FA__DIRTY 0x40
adrevong	0:8b2a15992487	304	#endif
adrevong	0:8b2a15992487	305
adrevong	0:8b2a15992487	306
adrevong	0:8b2a15992487	307	/* FAT sub type (FATFS.fs_type) */
adrevong	0:8b2a15992487	308
adrevong	0:8b2a15992487	309	#define FS_FAT12 1
adrevong	0:8b2a15992487	310	#define FS_FAT16 2
adrevong	0:8b2a15992487	311	#define FS_FAT32 3
adrevong	0:8b2a15992487	312
adrevong	0:8b2a15992487	313
adrevong	0:8b2a15992487	314	/* File attribute bits for directory entry */
adrevong	0:8b2a15992487	315
adrevong	0:8b2a15992487	316	#define AM_RDO 0x01 /* Read only */
adrevong	0:8b2a15992487	317	#define AM_HID 0x02 /* Hidden */
adrevong	0:8b2a15992487	318	#define AM_SYS 0x04 /* System */
adrevong	0:8b2a15992487	319	#define AM_VOL 0x08 /* Volume label */
adrevong	0:8b2a15992487	320	#define AM_LFN 0x0F /* LFN entry */
adrevong	0:8b2a15992487	321	#define AM_DIR 0x10 /* Directory */
adrevong	0:8b2a15992487	322	#define AM_ARC 0x20 /* Archive */
adrevong	0:8b2a15992487	323	#define AM_MASK 0x3F /* Mask of defined bits */
adrevong	0:8b2a15992487	324
adrevong	0:8b2a15992487	325
adrevong	0:8b2a15992487	326	/* Fast seek feature */
adrevong	0:8b2a15992487	327	#define CREATE_LINKMAP 0xFFFFFFFF
adrevong	0:8b2a15992487	328
adrevong	0:8b2a15992487	329
adrevong	0:8b2a15992487	330
adrevong	0:8b2a15992487	331	/--------------------------------/
adrevong	0:8b2a15992487	332	/* Multi-byte word access macros */
adrevong	0:8b2a15992487	333
adrevong	0:8b2a15992487	334	#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
adrevong	0:8b2a15992487	335	#define LD_WORD(ptr) (WORD)((WORD)(BYTE*)(ptr))
adrevong	0:8b2a15992487	336	#define LD_DWORD(ptr) (DWORD)((DWORD)(BYTE*)(ptr))
adrevong	0:8b2a15992487	337	#define ST_WORD(ptr,val) (WORD)(BYTE*)(ptr)=(WORD)(val)
adrevong	0:8b2a15992487	338	#define ST_DWORD(ptr,val) (DWORD)(BYTE*)(ptr)=(DWORD)(val)
adrevong	0:8b2a15992487	339	#else /* Use byte-by-byte access to the FAT structure */
adrevong	0:8b2a15992487	340	#define LD_WORD(ptr) (WORD)(((WORD)((BYTE)(ptr)+1)<<8)\|(WORD)(BYTE)(ptr))
adrevong	0:8b2a15992487	341	#define LD_DWORD(ptr) (DWORD)(((DWORD)((BYTE)(ptr)+3)<<24)\|((DWORD)((BYTE)(ptr)+2)<<16)\|((WORD)((BYTE)(ptr)+1)<<8)\|(BYTE)(ptr))
adrevong	0:8b2a15992487	342	#define ST_WORD(ptr,val) (BYTE)(ptr)=(BYTE)(val); ((BYTE)(ptr)+1)=(BYTE)((WORD)(val)>>8)
adrevong	0:8b2a15992487	343	#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)
adrevong	0:8b2a15992487	344	#endif
adrevong	0:8b2a15992487	345
adrevong	0:8b2a15992487	346	#ifdef __cplusplus
adrevong	0:8b2a15992487	347	}
adrevong	0:8b2a15992487	348	#endif
adrevong	0:8b2a15992487	349
adrevong	0:8b2a15992487	350	#endif /* _FATFS */

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Type:	Program
Created:	28 Jan 2020
Imports:	0
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	62

FATFileSystem/ChaN/ff.h@0:8b2a15992487, 2020-01-28 (annotated)

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