Carlos Alberto Nascimento Filho / FatFileSystemSD

Sd card

Dependents:   final_proj1 RoboPanorama Andar_Linha_Reta_Robo_Claw_v1

Fork of FatFileSystem by mbed unsupported

ff.h@4:6ce49c16703c, 2012-09-16 (annotated)

Committer:
carlos_nascimento08
Date:
Sun Sep 16 15:00:15 2012 +0000
Revision:
4:6ce49c16703c
Parent:
0:97df4125f18d 
Test with board RoboClaw 15A

Who changed what in which revision?

UserRevisionLine numberNew contents of line
carlos_nascimento08 4:6ce49c16703c 1 /*--------------------------------------------------------------------------/
carlos_nascimento08 4:6ce49c16703c 2 / FatFs - FAT file system module include file R0.06 (C)ChaN, 2008
carlos_nascimento08 4:6ce49c16703c 3 /---------------------------------------------------------------------------/
carlos_nascimento08 4:6ce49c16703c 4 / FatFs module is an experimenal project to implement FAT file system to
carlos_nascimento08 4:6ce49c16703c 5 / cheap microcontrollers. This is a free software and is opened for education,
carlos_nascimento08 4:6ce49c16703c 6 / research and development under license policy of following trems.
carlos_nascimento08 4:6ce49c16703c 7 /
carlos_nascimento08 4:6ce49c16703c 8 / Copyright (C) 2008, ChaN, all right reserved.
carlos_nascimento08 4:6ce49c16703c 9 /
carlos_nascimento08 4:6ce49c16703c 10 / * The FatFs module is a free software and there is no warranty.
carlos_nascimento08 4:6ce49c16703c 11 / * You can use, modify and/or redistribute it for personal, non-profit or
carlos_nascimento08 4:6ce49c16703c 12 / commercial use without any restriction under your responsibility.
carlos_nascimento08 4:6ce49c16703c 13 / * Redistributions of source code must retain the above copyright notice.
carlos_nascimento08 4:6ce49c16703c 14 /
carlos_nascimento08 4:6ce49c16703c 15 /---------------------------------------------------------------------------*/
carlos_nascimento08 4:6ce49c16703c 16
carlos_nascimento08 4:6ce49c16703c 17 #ifndef _FATFS
carlos_nascimento08 4:6ce49c16703c 18
carlos_nascimento08 4:6ce49c16703c 19 #define _MCU_ENDIAN 2
carlos_nascimento08 4:6ce49c16703c 20 /* The _MCU_ENDIAN defines which access method is used to the FAT structure.
carlos_nascimento08 4:6ce49c16703c 21 / 1: Enable word access.
carlos_nascimento08 4:6ce49c16703c 22 / 2: Disable word access and use byte-by-byte access instead.
carlos_nascimento08 4:6ce49c16703c 23 / When the architectural byte order of the MCU is big-endian and/or address
carlos_nascimento08 4:6ce49c16703c 24 / miss-aligned access results incorrect behavior, the _MCU_ENDIAN must be set to 2.
carlos_nascimento08 4:6ce49c16703c 25 / If it is not the case, it can also be set to 1 for good code efficiency. */
carlos_nascimento08 4:6ce49c16703c 26
carlos_nascimento08 4:6ce49c16703c 27 #define _FS_READONLY 0
carlos_nascimento08 4:6ce49c16703c 28 /* Setting _FS_READONLY to 1 defines read only configuration. This removes
carlos_nascimento08 4:6ce49c16703c 29 / writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
carlos_nascimento08 4:6ce49c16703c 30 / f_truncate and useless f_getfree. */
carlos_nascimento08 4:6ce49c16703c 31
carlos_nascimento08 4:6ce49c16703c 32 #define _FS_MINIMIZE 0
carlos_nascimento08 4:6ce49c16703c 33 /* The _FS_MINIMIZE option defines minimization level to remove some functions.
carlos_nascimento08 4:6ce49c16703c 34 / 0: Full function.
carlos_nascimento08 4:6ce49c16703c 35 / 1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod, f_truncate and f_rename are removed.
carlos_nascimento08 4:6ce49c16703c 36 / 2: f_opendir and f_readdir are removed in addition to level 1.
carlos_nascimento08 4:6ce49c16703c 37 / 3: f_lseek is removed in addition to level 2. */
carlos_nascimento08 4:6ce49c16703c 38
carlos_nascimento08 4:6ce49c16703c 39 #define _USE_STRFUNC 0
carlos_nascimento08 4:6ce49c16703c 40 /* To enable string functions, set _USE_STRFUNC to 1 or 2. */
carlos_nascimento08 4:6ce49c16703c 41
carlos_nascimento08 4:6ce49c16703c 42 #define _USE_MKFS 1
carlos_nascimento08 4:6ce49c16703c 43 /* When _USE_MKFS is set to 1 and _FS_READONLY is set to 0, f_mkfs function is
carlos_nascimento08 4:6ce49c16703c 44 / enabled. */
carlos_nascimento08 4:6ce49c16703c 45
carlos_nascimento08 4:6ce49c16703c 46 #define _DRIVES 4
carlos_nascimento08 4:6ce49c16703c 47 /* Number of logical drives to be used. This affects the size of internal table. */
carlos_nascimento08 4:6ce49c16703c 48
carlos_nascimento08 4:6ce49c16703c 49 #define _MULTI_PARTITION 0
carlos_nascimento08 4:6ce49c16703c 50 /* When _MULTI_PARTITION is set to 0, each logical drive is bound to same
carlos_nascimento08 4:6ce49c16703c 51 / physical drive number and can mount only 1st primaly partition. When it is
carlos_nascimento08 4:6ce49c16703c 52 / set to 1, each logical drive can mount a partition listed in Drives[]. */
carlos_nascimento08 4:6ce49c16703c 53
carlos_nascimento08 4:6ce49c16703c 54 #define _USE_FSINFO 0
carlos_nascimento08 4:6ce49c16703c 55 /* To enable FSInfo support on FAT32 volume, set _USE_FSINFO to 1. */
carlos_nascimento08 4:6ce49c16703c 56
carlos_nascimento08 4:6ce49c16703c 57 #define _USE_SJIS 1
carlos_nascimento08 4:6ce49c16703c 58 /* When _USE_SJIS is set to 1, Shift-JIS code transparency is enabled, otherwise
carlos_nascimento08 4:6ce49c16703c 59 / only US-ASCII(7bit) code can be accepted as file/directory name. */
carlos_nascimento08 4:6ce49c16703c 60
carlos_nascimento08 4:6ce49c16703c 61 #define _USE_NTFLAG 1
carlos_nascimento08 4:6ce49c16703c 62 /* When _USE_NTFLAG is set to 1, upper/lower case of the file name is preserved.
carlos_nascimento08 4:6ce49c16703c 63 / Note that the files are always accessed in case insensitive. */
carlos_nascimento08 4:6ce49c16703c 64
carlos_nascimento08 4:6ce49c16703c 65
carlos_nascimento08 4:6ce49c16703c 66 #include "integer.h"
carlos_nascimento08 4:6ce49c16703c 67
carlos_nascimento08 4:6ce49c16703c 68 #ifdef __cplusplus
carlos_nascimento08 4:6ce49c16703c 69 extern "C" {
carlos_nascimento08 4:6ce49c16703c 70 #endif
carlos_nascimento08 4:6ce49c16703c 71
carlos_nascimento08 4:6ce49c16703c 72 /* Definitions corresponds to multiple sector size (not tested) */
carlos_nascimento08 4:6ce49c16703c 73 #define S_MAX_SIZ 512U /* Do not change */
carlos_nascimento08 4:6ce49c16703c 74 #if S_MAX_SIZ > 512U
carlos_nascimento08 4:6ce49c16703c 75 #define SS(fs) ((fs)->s_size)
carlos_nascimento08 4:6ce49c16703c 76 #else
carlos_nascimento08 4:6ce49c16703c 77 #define SS(fs) 512U
carlos_nascimento08 4:6ce49c16703c 78 #endif
carlos_nascimento08 4:6ce49c16703c 79
carlos_nascimento08 4:6ce49c16703c 80
carlos_nascimento08 4:6ce49c16703c 81 /* File system object structure */
carlos_nascimento08 4:6ce49c16703c 82 typedef struct _FATFS {
carlos_nascimento08 4:6ce49c16703c 83 WORD id; /* File system mount ID */
carlos_nascimento08 4:6ce49c16703c 84 WORD n_rootdir; /* Number of root directory entries */
carlos_nascimento08 4:6ce49c16703c 85 DWORD winsect; /* Current sector appearing in the win[] */
carlos_nascimento08 4:6ce49c16703c 86 DWORD sects_fat; /* Sectors per fat */
carlos_nascimento08 4:6ce49c16703c 87 DWORD max_clust; /* Maximum cluster# + 1 */
carlos_nascimento08 4:6ce49c16703c 88 DWORD fatbase; /* FAT start sector */
carlos_nascimento08 4:6ce49c16703c 89 DWORD dirbase; /* Root directory start sector (cluster# for FAT32) */
carlos_nascimento08 4:6ce49c16703c 90 DWORD database; /* Data start sector */
carlos_nascimento08 4:6ce49c16703c 91 #if !_FS_READONLY
carlos_nascimento08 4:6ce49c16703c 92 DWORD last_clust; /* Last allocated cluster */
carlos_nascimento08 4:6ce49c16703c 93 DWORD free_clust; /* Number of free clusters */
carlos_nascimento08 4:6ce49c16703c 94 #if _USE_FSINFO
carlos_nascimento08 4:6ce49c16703c 95 DWORD fsi_sector; /* fsinfo sector */
carlos_nascimento08 4:6ce49c16703c 96 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
carlos_nascimento08 4:6ce49c16703c 97 BYTE pad2;
carlos_nascimento08 4:6ce49c16703c 98 #endif
carlos_nascimento08 4:6ce49c16703c 99 #endif
carlos_nascimento08 4:6ce49c16703c 100 BYTE fs_type; /* FAT sub type */
carlos_nascimento08 4:6ce49c16703c 101 BYTE csize; /* Number of sectors per cluster */
carlos_nascimento08 4:6ce49c16703c 102 #if S_MAX_SIZ > 512U
carlos_nascimento08 4:6ce49c16703c 103 WORD s_size; /* Sector size */
carlos_nascimento08 4:6ce49c16703c 104 #endif
carlos_nascimento08 4:6ce49c16703c 105 BYTE n_fats; /* Number of FAT copies */
carlos_nascimento08 4:6ce49c16703c 106 BYTE drive; /* Physical drive number */
carlos_nascimento08 4:6ce49c16703c 107 BYTE winflag; /* win[] dirty flag (1:must be written back) */
carlos_nascimento08 4:6ce49c16703c 108 BYTE pad1;
carlos_nascimento08 4:6ce49c16703c 109 BYTE win[S_MAX_SIZ]; /* Disk access window for Directory/FAT */
carlos_nascimento08 4:6ce49c16703c 110 } FATFS;
carlos_nascimento08 4:6ce49c16703c 111
carlos_nascimento08 4:6ce49c16703c 112
carlos_nascimento08 4:6ce49c16703c 113 /* Directory object structure */
carlos_nascimento08 4:6ce49c16703c 114 typedef struct _DIR {
carlos_nascimento08 4:6ce49c16703c 115 WORD id; /* Owner file system mount ID */
carlos_nascimento08 4:6ce49c16703c 116 WORD index; /* Current index */
carlos_nascimento08 4:6ce49c16703c 117 FATFS* fs; /* Pointer to the owner file system object */
carlos_nascimento08 4:6ce49c16703c 118 DWORD sclust; /* Start cluster */
carlos_nascimento08 4:6ce49c16703c 119 DWORD clust; /* Current cluster */
carlos_nascimento08 4:6ce49c16703c 120 DWORD sect; /* Current sector */
carlos_nascimento08 4:6ce49c16703c 121 } FATFS_DIR;
carlos_nascimento08 4:6ce49c16703c 122
carlos_nascimento08 4:6ce49c16703c 123
carlos_nascimento08 4:6ce49c16703c 124 /* File object structure */
carlos_nascimento08 4:6ce49c16703c 125 typedef struct _FIL {
carlos_nascimento08 4:6ce49c16703c 126 WORD id; /* Owner file system mount ID */
carlos_nascimento08 4:6ce49c16703c 127 BYTE flag; /* File status flags */
carlos_nascimento08 4:6ce49c16703c 128 BYTE csect; /* Sector address in the cluster */
carlos_nascimento08 4:6ce49c16703c 129 FATFS* fs; /* Pointer to the owner file system object */
carlos_nascimento08 4:6ce49c16703c 130 DWORD fptr; /* File R/W pointer */
carlos_nascimento08 4:6ce49c16703c 131 DWORD fsize; /* File size */
carlos_nascimento08 4:6ce49c16703c 132 DWORD org_clust; /* File start cluster */
carlos_nascimento08 4:6ce49c16703c 133 DWORD curr_clust; /* Current cluster */
carlos_nascimento08 4:6ce49c16703c 134 DWORD curr_sect; /* Current sector */
carlos_nascimento08 4:6ce49c16703c 135 #if _FS_READONLY == 0
carlos_nascimento08 4:6ce49c16703c 136 DWORD dir_sect; /* Sector containing the directory entry */
carlos_nascimento08 4:6ce49c16703c 137 BYTE* dir_ptr; /* Ponter to the directory entry in the window */
carlos_nascimento08 4:6ce49c16703c 138 #endif
carlos_nascimento08 4:6ce49c16703c 139 BYTE buffer[S_MAX_SIZ]; /* File R/W buffer */
carlos_nascimento08 4:6ce49c16703c 140 } FIL;
carlos_nascimento08 4:6ce49c16703c 141
carlos_nascimento08 4:6ce49c16703c 142
carlos_nascimento08 4:6ce49c16703c 143 /* File status structure */
carlos_nascimento08 4:6ce49c16703c 144 typedef struct _FILINFO {
carlos_nascimento08 4:6ce49c16703c 145 DWORD fsize; /* Size */
carlos_nascimento08 4:6ce49c16703c 146 WORD fdate; /* Date */
carlos_nascimento08 4:6ce49c16703c 147 WORD ftime; /* Time */
carlos_nascimento08 4:6ce49c16703c 148 BYTE fattrib; /* Attribute */
carlos_nascimento08 4:6ce49c16703c 149 char fname[8+1+3+1]; /* Name (8.3 format) */
carlos_nascimento08 4:6ce49c16703c 150 } FILINFO;
carlos_nascimento08 4:6ce49c16703c 151
carlos_nascimento08 4:6ce49c16703c 152
carlos_nascimento08 4:6ce49c16703c 153
carlos_nascimento08 4:6ce49c16703c 154 /* Definitions corresponds to multi partition */
carlos_nascimento08 4:6ce49c16703c 155
carlos_nascimento08 4:6ce49c16703c 156 #if _MULTI_PARTITION != 0 /* Multiple partition cfg */
carlos_nascimento08 4:6ce49c16703c 157
carlos_nascimento08 4:6ce49c16703c 158 typedef struct _PARTITION {
carlos_nascimento08 4:6ce49c16703c 159 BYTE pd; /* Physical drive # (0-255) */
carlos_nascimento08 4:6ce49c16703c 160 BYTE pt; /* Partition # (0-3) */
carlos_nascimento08 4:6ce49c16703c 161 } PARTITION;
carlos_nascimento08 4:6ce49c16703c 162 extern
carlos_nascimento08 4:6ce49c16703c 163 const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
carlos_nascimento08 4:6ce49c16703c 164 #define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
carlos_nascimento08 4:6ce49c16703c 165 #define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
carlos_nascimento08 4:6ce49c16703c 166
carlos_nascimento08 4:6ce49c16703c 167 #else /* Single partition cfg */
carlos_nascimento08 4:6ce49c16703c 168
carlos_nascimento08 4:6ce49c16703c 169 #define LD2PD(drv) (drv) /* Physical drive# is equal to logical drive# */
carlos_nascimento08 4:6ce49c16703c 170 #define LD2PT(drv) 0 /* Always mounts the 1st partition */
carlos_nascimento08 4:6ce49c16703c 171
carlos_nascimento08 4:6ce49c16703c 172 #endif
carlos_nascimento08 4:6ce49c16703c 173
carlos_nascimento08 4:6ce49c16703c 174
carlos_nascimento08 4:6ce49c16703c 175 /* File function return code (FRESULT) */
carlos_nascimento08 4:6ce49c16703c 176
carlos_nascimento08 4:6ce49c16703c 177 typedef enum {
carlos_nascimento08 4:6ce49c16703c 178 FR_OK = 0, /* 0 */
carlos_nascimento08 4:6ce49c16703c 179 FR_NOT_READY, /* 1 */
carlos_nascimento08 4:6ce49c16703c 180 FR_NO_FILE, /* 2 */
carlos_nascimento08 4:6ce49c16703c 181 FR_NO_PATH, /* 3 */
carlos_nascimento08 4:6ce49c16703c 182 FR_INVALID_NAME, /* 4 */
carlos_nascimento08 4:6ce49c16703c 183 FR_INVALID_DRIVE, /* 5 */
carlos_nascimento08 4:6ce49c16703c 184 FR_DENIED, /* 6 */
carlos_nascimento08 4:6ce49c16703c 185 FR_EXIST, /* 7 */
carlos_nascimento08 4:6ce49c16703c 186 FR_RW_ERROR, /* 8 */
carlos_nascimento08 4:6ce49c16703c 187 FR_WRITE_PROTECTED, /* 9 */
carlos_nascimento08 4:6ce49c16703c 188 FR_NOT_ENABLED, /* 10 */
carlos_nascimento08 4:6ce49c16703c 189 FR_NO_FILESYSTEM, /* 11 */
carlos_nascimento08 4:6ce49c16703c 190 FR_INVALID_OBJECT, /* 12 */
carlos_nascimento08 4:6ce49c16703c 191 FR_MKFS_ABORTED /* 13 */
carlos_nascimento08 4:6ce49c16703c 192 } FRESULT;
carlos_nascimento08 4:6ce49c16703c 193
carlos_nascimento08 4:6ce49c16703c 194
carlos_nascimento08 4:6ce49c16703c 195
carlos_nascimento08 4:6ce49c16703c 196 /*-----------------------------------------------------*/
carlos_nascimento08 4:6ce49c16703c 197 /* FatFs module application interface */
carlos_nascimento08 4:6ce49c16703c 198
carlos_nascimento08 4:6ce49c16703c 199 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
carlos_nascimento08 4:6ce49c16703c 200 FRESULT f_open (FIL*, const char*, BYTE); /* Open or create a file */
carlos_nascimento08 4:6ce49c16703c 201 FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
carlos_nascimento08 4:6ce49c16703c 202 FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
carlos_nascimento08 4:6ce49c16703c 203 FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
carlos_nascimento08 4:6ce49c16703c 204 FRESULT f_close (FIL*); /* Close an open file object */
carlos_nascimento08 4:6ce49c16703c 205 FRESULT f_opendir (FATFS_DIR*, const char*); /* Open an existing directory */
carlos_nascimento08 4:6ce49c16703c 206 FRESULT f_readdir (FATFS_DIR*, FILINFO*); /* Read a directory item */
carlos_nascimento08 4:6ce49c16703c 207 FRESULT f_stat (const char*, FILINFO*); /* Get file status */
carlos_nascimento08 4:6ce49c16703c 208 FRESULT f_getfree (const char*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
carlos_nascimento08 4:6ce49c16703c 209 FRESULT f_truncate (FIL*); /* Truncate file */
carlos_nascimento08 4:6ce49c16703c 210 FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
carlos_nascimento08 4:6ce49c16703c 211 FRESULT f_unlink (const char*); /* Delete an existing file or directory */
carlos_nascimento08 4:6ce49c16703c 212 FRESULT f_mkdir (const char*); /* Create a new directory */
carlos_nascimento08 4:6ce49c16703c 213 FRESULT f_chmod (const char*, BYTE, BYTE); /* Change file/dir attriburte */
carlos_nascimento08 4:6ce49c16703c 214 FRESULT f_utime (const char*, const FILINFO*); /* Change file/dir timestamp */
carlos_nascimento08 4:6ce49c16703c 215 FRESULT f_rename (const char*, const char*); /* Rename/Move a file or directory */
carlos_nascimento08 4:6ce49c16703c 216 FRESULT f_mkfs (BYTE, BYTE, WORD); /* Create a file system on the drive */
carlos_nascimento08 4:6ce49c16703c 217 #if _USE_STRFUNC
carlos_nascimento08 4:6ce49c16703c 218 #define feof(fp) ((fp)->fptr == (fp)->fsize)
carlos_nascimento08 4:6ce49c16703c 219 #define EOF -1
carlos_nascimento08 4:6ce49c16703c 220 int fputc (int, FIL*); /* Put a character to the file */
carlos_nascimento08 4:6ce49c16703c 221 int fputs (const char*, FIL*); /* Put a string to the file */
carlos_nascimento08 4:6ce49c16703c 222 int fprintf (FIL*, const char*, ...); /* Put a formatted string to the file */
carlos_nascimento08 4:6ce49c16703c 223 char* fgets (char*, int, FIL*); /* Get a string from the file */
carlos_nascimento08 4:6ce49c16703c 224 #endif
carlos_nascimento08 4:6ce49c16703c 225
carlos_nascimento08 4:6ce49c16703c 226 /* User defined function to give a current time to fatfs module */
carlos_nascimento08 4:6ce49c16703c 227
carlos_nascimento08 4:6ce49c16703c 228 DWORD get_fattime (void); /* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
carlos_nascimento08 4:6ce49c16703c 229 /* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
carlos_nascimento08 4:6ce49c16703c 230
carlos_nascimento08 4:6ce49c16703c 231
carlos_nascimento08 4:6ce49c16703c 232
carlos_nascimento08 4:6ce49c16703c 233 /* File access control and file status flags (FIL.flag) */
carlos_nascimento08 4:6ce49c16703c 234
carlos_nascimento08 4:6ce49c16703c 235 #define FA_READ 0x01
carlos_nascimento08 4:6ce49c16703c 236 #define FA_OPEN_EXISTING 0x00
carlos_nascimento08 4:6ce49c16703c 237 #if _FS_READONLY == 0
carlos_nascimento08 4:6ce49c16703c 238 #define FA_WRITE 0x02
carlos_nascimento08 4:6ce49c16703c 239 #define FA_CREATE_NEW 0x04
carlos_nascimento08 4:6ce49c16703c 240 #define FA_CREATE_ALWAYS 0x08
carlos_nascimento08 4:6ce49c16703c 241 #define FA_OPEN_ALWAYS 0x10
carlos_nascimento08 4:6ce49c16703c 242 #define FA__WRITTEN 0x20
carlos_nascimento08 4:6ce49c16703c 243 #define FA__DIRTY 0x40
carlos_nascimento08 4:6ce49c16703c 244 #endif
carlos_nascimento08 4:6ce49c16703c 245 #define FA__ERROR 0x80
carlos_nascimento08 4:6ce49c16703c 246
carlos_nascimento08 4:6ce49c16703c 247
carlos_nascimento08 4:6ce49c16703c 248 /* FAT sub type (FATFS.fs_type) */
carlos_nascimento08 4:6ce49c16703c 249
carlos_nascimento08 4:6ce49c16703c 250 #define FS_FAT12 1
carlos_nascimento08 4:6ce49c16703c 251 #define FS_FAT16 2
carlos_nascimento08 4:6ce49c16703c 252 #define FS_FAT32 3
carlos_nascimento08 4:6ce49c16703c 253
carlos_nascimento08 4:6ce49c16703c 254
carlos_nascimento08 4:6ce49c16703c 255 /* File attribute bits for directory entry */
carlos_nascimento08 4:6ce49c16703c 256
carlos_nascimento08 4:6ce49c16703c 257 #define AM_RDO 0x01 /* Read only */
carlos_nascimento08 4:6ce49c16703c 258 #define AM_HID 0x02 /* Hidden */
carlos_nascimento08 4:6ce49c16703c 259 #define AM_SYS 0x04 /* System */
carlos_nascimento08 4:6ce49c16703c 260 #define AM_VOL 0x08 /* Volume label */
carlos_nascimento08 4:6ce49c16703c 261 #define AM_LFN 0x0F /* LFN entry */
carlos_nascimento08 4:6ce49c16703c 262 #define AM_DIR 0x10 /* Directory */
carlos_nascimento08 4:6ce49c16703c 263 #define AM_ARC 0x20 /* Archive */
carlos_nascimento08 4:6ce49c16703c 264
carlos_nascimento08 4:6ce49c16703c 265
carlos_nascimento08 4:6ce49c16703c 266
carlos_nascimento08 4:6ce49c16703c 267 /* Offset of FAT structure members */
carlos_nascimento08 4:6ce49c16703c 268
carlos_nascimento08 4:6ce49c16703c 269 #define BS_jmpBoot 0
carlos_nascimento08 4:6ce49c16703c 270 #define BS_OEMName 3
carlos_nascimento08 4:6ce49c16703c 271 #define BPB_BytsPerSec 11
carlos_nascimento08 4:6ce49c16703c 272 #define BPB_SecPerClus 13
carlos_nascimento08 4:6ce49c16703c 273 #define BPB_RsvdSecCnt 14
carlos_nascimento08 4:6ce49c16703c 274 #define BPB_NumFATs 16
carlos_nascimento08 4:6ce49c16703c 275 #define BPB_RootEntCnt 17
carlos_nascimento08 4:6ce49c16703c 276 #define BPB_TotSec16 19
carlos_nascimento08 4:6ce49c16703c 277 #define BPB_Media 21
carlos_nascimento08 4:6ce49c16703c 278 #define BPB_FATSz16 22
carlos_nascimento08 4:6ce49c16703c 279 #define BPB_SecPerTrk 24
carlos_nascimento08 4:6ce49c16703c 280 #define BPB_NumHeads 26
carlos_nascimento08 4:6ce49c16703c 281 #define BPB_HiddSec 28
carlos_nascimento08 4:6ce49c16703c 282 #define BPB_TotSec32 32
carlos_nascimento08 4:6ce49c16703c 283 #define BS_55AA 510
carlos_nascimento08 4:6ce49c16703c 284
carlos_nascimento08 4:6ce49c16703c 285 #define BS_DrvNum 36
carlos_nascimento08 4:6ce49c16703c 286 #define BS_BootSig 38
carlos_nascimento08 4:6ce49c16703c 287 #define BS_VolID 39
carlos_nascimento08 4:6ce49c16703c 288 #define BS_VolLab 43
carlos_nascimento08 4:6ce49c16703c 289 #define BS_FilSysType 54
carlos_nascimento08 4:6ce49c16703c 290
carlos_nascimento08 4:6ce49c16703c 291 #define BPB_FATSz32 36
carlos_nascimento08 4:6ce49c16703c 292 #define BPB_ExtFlags 40
carlos_nascimento08 4:6ce49c16703c 293 #define BPB_FSVer 42
carlos_nascimento08 4:6ce49c16703c 294 #define BPB_RootClus 44
carlos_nascimento08 4:6ce49c16703c 295 #define BPB_FSInfo 48
carlos_nascimento08 4:6ce49c16703c 296 #define BPB_BkBootSec 50
carlos_nascimento08 4:6ce49c16703c 297 #define BS_DrvNum32 64
carlos_nascimento08 4:6ce49c16703c 298 #define BS_BootSig32 66
carlos_nascimento08 4:6ce49c16703c 299 #define BS_VolID32 67
carlos_nascimento08 4:6ce49c16703c 300 #define BS_VolLab32 71
carlos_nascimento08 4:6ce49c16703c 301 #define BS_FilSysType32 82
carlos_nascimento08 4:6ce49c16703c 302
carlos_nascimento08 4:6ce49c16703c 303 #define FSI_LeadSig 0
carlos_nascimento08 4:6ce49c16703c 304 #define FSI_StrucSig 484
carlos_nascimento08 4:6ce49c16703c 305 #define FSI_Free_Count 488
carlos_nascimento08 4:6ce49c16703c 306 #define FSI_Nxt_Free 492
carlos_nascimento08 4:6ce49c16703c 307
carlos_nascimento08 4:6ce49c16703c 308 #define MBR_Table 446
carlos_nascimento08 4:6ce49c16703c 309
carlos_nascimento08 4:6ce49c16703c 310 #define DIR_Name 0
carlos_nascimento08 4:6ce49c16703c 311 #define DIR_Attr 11
carlos_nascimento08 4:6ce49c16703c 312 #define DIR_NTres 12
carlos_nascimento08 4:6ce49c16703c 313 #define DIR_CrtTime 14
carlos_nascimento08 4:6ce49c16703c 314 #define DIR_CrtDate 16
carlos_nascimento08 4:6ce49c16703c 315 #define DIR_FstClusHI 20
carlos_nascimento08 4:6ce49c16703c 316 #define DIR_WrtTime 22
carlos_nascimento08 4:6ce49c16703c 317 #define DIR_WrtDate 24
carlos_nascimento08 4:6ce49c16703c 318 #define DIR_FstClusLO 26
carlos_nascimento08 4:6ce49c16703c 319 #define DIR_FileSize 28
carlos_nascimento08 4:6ce49c16703c 320
carlos_nascimento08 4:6ce49c16703c 321
carlos_nascimento08 4:6ce49c16703c 322
carlos_nascimento08 4:6ce49c16703c 323 /* Multi-byte word access macros */
carlos_nascimento08 4:6ce49c16703c 324
carlos_nascimento08 4:6ce49c16703c 325 #if _MCU_ENDIAN == 1 /* Use word access */
carlos_nascimento08 4:6ce49c16703c 326 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
carlos_nascimento08 4:6ce49c16703c 327 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
carlos_nascimento08 4:6ce49c16703c 328 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
carlos_nascimento08 4:6ce49c16703c 329 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
carlos_nascimento08 4:6ce49c16703c 330 #elif _MCU_ENDIAN == 2 /* Use byte-by-byte access */
carlos_nascimento08 4:6ce49c16703c 331 #define LD_WORD(ptr) (WORD)(((WORD)*(volatile BYTE*)((ptr)+1)<<8)|(WORD)*(volatile BYTE*)(ptr))
carlos_nascimento08 4:6ce49c16703c 332 #define LD_DWORD(ptr) (DWORD)(((DWORD)*(volatile BYTE*)((ptr)+3)<<24)|((DWORD)*(volatile BYTE*)((ptr)+2)<<16)|((WORD)*(volatile BYTE*)((ptr)+1)<<8)|*(volatile BYTE*)(ptr))
carlos_nascimento08 4:6ce49c16703c 333 #define ST_WORD(ptr,val) *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8)
carlos_nascimento08 4:6ce49c16703c 334 #define ST_DWORD(ptr,val) *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(volatile BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(volatile BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
carlos_nascimento08 4:6ce49c16703c 335 #else
carlos_nascimento08 4:6ce49c16703c 336 #error Do not forget to set _MCU_ENDIAN properly!
carlos_nascimento08 4:6ce49c16703c 337 #endif
carlos_nascimento08 4:6ce49c16703c 338
carlos_nascimento08 4:6ce49c16703c 339 #ifdef __cplusplus
carlos_nascimento08 4:6ce49c16703c 340 };
carlos_nascimento08 4:6ce49c16703c 341 #endif
carlos_nascimento08 4:6ce49c16703c 342
carlos_nascimento08 4:6ce49c16703c 343 #define _FATFS
carlos_nascimento08 4:6ce49c16703c 344 #endif /* _FATFS */