Hunter Wardlaw / FATFileSystem

Fork of FATFileSystem by mbed official

ChaN/ff.h@1:46ce1e16c870, 2012-11-27 (annotated)

Committer:
emilmont
Date:
Tue Nov 27 17:31:18 2012 +0000
Revision:
1:46ce1e16c870
Child:
5:b3b3370574cf
Commit FATFileSystem code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 1:46ce1e16c870 1 /*---------------------------------------------------------------------------/
emilmont 1:46ce1e16c870 2 / FatFs - FAT file system module include file R0.09a (C)ChaN, 2012
emilmont 1:46ce1e16c870 3 /----------------------------------------------------------------------------/
emilmont 1:46ce1e16c870 4 / FatFs module is a generic FAT file system module for small embedded systems.
emilmont 1:46ce1e16c870 5 / This is a free software that opened for education, research and commercial
emilmont 1:46ce1e16c870 6 / developments under license policy of following terms.
emilmont 1:46ce1e16c870 7 /
emilmont 1:46ce1e16c870 8 / Copyright (C) 2012, ChaN, all right reserved.
emilmont 1:46ce1e16c870 9 /
emilmont 1:46ce1e16c870 10 / * The FatFs module is a free software and there is NO WARRANTY.
emilmont 1:46ce1e16c870 11 / * No restriction on use. You can use, modify and redistribute it for
emilmont 1:46ce1e16c870 12 / personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
emilmont 1:46ce1e16c870 13 / * Redistributions of source code must retain the above copyright notice.
emilmont 1:46ce1e16c870 14 /
emilmont 1:46ce1e16c870 15 /----------------------------------------------------------------------------*/
emilmont 1:46ce1e16c870 16
emilmont 1:46ce1e16c870 17 #ifndef _FATFS
emilmont 1:46ce1e16c870 18 #define _FATFS 4004 /* Revision ID */
emilmont 1:46ce1e16c870 19
emilmont 1:46ce1e16c870 20 #ifdef __cplusplus
emilmont 1:46ce1e16c870 21 extern "C" {
emilmont 1:46ce1e16c870 22 #endif
emilmont 1:46ce1e16c870 23
emilmont 1:46ce1e16c870 24 #include "integer.h" /* Basic integer types */
emilmont 1:46ce1e16c870 25 #include "ffconf.h" /* FatFs configuration options */
emilmont 1:46ce1e16c870 26
emilmont 1:46ce1e16c870 27 #if _FATFS != _FFCONF
emilmont 1:46ce1e16c870 28 #error Wrong configuration file (ffconf.h).
emilmont 1:46ce1e16c870 29 #endif
emilmont 1:46ce1e16c870 30
emilmont 1:46ce1e16c870 31
emilmont 1:46ce1e16c870 32
emilmont 1:46ce1e16c870 33 /* Definitions of volume management */
emilmont 1:46ce1e16c870 34
emilmont 1:46ce1e16c870 35 #if _MULTI_PARTITION /* Multiple partition configuration */
emilmont 1:46ce1e16c870 36 typedef struct {
emilmont 1:46ce1e16c870 37 BYTE pd; /* Physical drive number */
emilmont 1:46ce1e16c870 38 BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
emilmont 1:46ce1e16c870 39 } PARTITION;
emilmont 1:46ce1e16c870 40 extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
emilmont 1:46ce1e16c870 41 #define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
emilmont 1:46ce1e16c870 42 #define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
emilmont 1:46ce1e16c870 43
emilmont 1:46ce1e16c870 44 #else /* Single partition configuration */
emilmont 1:46ce1e16c870 45 #define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
emilmont 1:46ce1e16c870 46 #define LD2PT(vol) 0 /* Always mounts the 1st partition or in SFD */
emilmont 1:46ce1e16c870 47
emilmont 1:46ce1e16c870 48 #endif
emilmont 1:46ce1e16c870 49
emilmont 1:46ce1e16c870 50
emilmont 1:46ce1e16c870 51
emilmont 1:46ce1e16c870 52 /* Type of path name strings on FatFs API */
emilmont 1:46ce1e16c870 53
emilmont 1:46ce1e16c870 54 #if _LFN_UNICODE /* Unicode string */
emilmont 1:46ce1e16c870 55 #if !_USE_LFN
emilmont 1:46ce1e16c870 56 #error _LFN_UNICODE must be 0 in non-LFN cfg.
emilmont 1:46ce1e16c870 57 #endif
emilmont 1:46ce1e16c870 58 #ifndef _INC_TCHAR
emilmont 1:46ce1e16c870 59 typedef WCHAR TCHAR;
emilmont 1:46ce1e16c870 60 #define _T(x) L ## x
emilmont 1:46ce1e16c870 61 #define _TEXT(x) L ## x
emilmont 1:46ce1e16c870 62 #endif
emilmont 1:46ce1e16c870 63
emilmont 1:46ce1e16c870 64 #else /* ANSI/OEM string */
emilmont 1:46ce1e16c870 65 #ifndef _INC_TCHAR
emilmont 1:46ce1e16c870 66 typedef char TCHAR;
emilmont 1:46ce1e16c870 67 #define _T(x) x
emilmont 1:46ce1e16c870 68 #define _TEXT(x) x
emilmont 1:46ce1e16c870 69 #endif
emilmont 1:46ce1e16c870 70
emilmont 1:46ce1e16c870 71 #endif
emilmont 1:46ce1e16c870 72
emilmont 1:46ce1e16c870 73
emilmont 1:46ce1e16c870 74
emilmont 1:46ce1e16c870 75 /* File system object structure (FATFS) */
emilmont 1:46ce1e16c870 76
emilmont 1:46ce1e16c870 77 typedef struct {
emilmont 1:46ce1e16c870 78 BYTE fs_type; /* FAT sub-type (0:Not mounted) */
emilmont 1:46ce1e16c870 79 BYTE drv; /* Physical drive number */
emilmont 1:46ce1e16c870 80 BYTE csize; /* Sectors per cluster (1,2,4...128) */
emilmont 1:46ce1e16c870 81 BYTE n_fats; /* Number of FAT copies (1,2) */
emilmont 1:46ce1e16c870 82 BYTE wflag; /* win[] dirty flag (1:must be written back) */
emilmont 1:46ce1e16c870 83 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
emilmont 1:46ce1e16c870 84 WORD id; /* File system mount ID */
emilmont 1:46ce1e16c870 85 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
emilmont 1:46ce1e16c870 86 #if _MAX_SS != 512
emilmont 1:46ce1e16c870 87 WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */
emilmont 1:46ce1e16c870 88 #endif
emilmont 1:46ce1e16c870 89 #if _FS_REENTRANT
emilmont 1:46ce1e16c870 90 _SYNC_t sobj; /* Identifier of sync object */
emilmont 1:46ce1e16c870 91 #endif
emilmont 1:46ce1e16c870 92 #if !_FS_READONLY
emilmont 1:46ce1e16c870 93 DWORD last_clust; /* Last allocated cluster */
emilmont 1:46ce1e16c870 94 DWORD free_clust; /* Number of free clusters */
emilmont 1:46ce1e16c870 95 DWORD fsi_sector; /* fsinfo sector (FAT32) */
emilmont 1:46ce1e16c870 96 #endif
emilmont 1:46ce1e16c870 97 #if _FS_RPATH
emilmont 1:46ce1e16c870 98 DWORD cdir; /* Current directory start cluster (0:root) */
emilmont 1:46ce1e16c870 99 #endif
emilmont 1:46ce1e16c870 100 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
emilmont 1:46ce1e16c870 101 DWORD fsize; /* Sectors per FAT */
emilmont 1:46ce1e16c870 102 DWORD fatbase; /* FAT start sector */
emilmont 1:46ce1e16c870 103 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
emilmont 1:46ce1e16c870 104 DWORD database; /* Data start sector */
emilmont 1:46ce1e16c870 105 DWORD winsect; /* Current sector appearing in the win[] */
emilmont 1:46ce1e16c870 106 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
emilmont 1:46ce1e16c870 107 } FATFS;
emilmont 1:46ce1e16c870 108
emilmont 1:46ce1e16c870 109
emilmont 1:46ce1e16c870 110
emilmont 1:46ce1e16c870 111 /* File object structure (FIL) */
emilmont 1:46ce1e16c870 112
emilmont 1:46ce1e16c870 113 typedef struct {
emilmont 1:46ce1e16c870 114 FATFS* fs; /* Pointer to the related file system object */
emilmont 1:46ce1e16c870 115 WORD id; /* File system mount ID of the related file system object */
emilmont 1:46ce1e16c870 116 BYTE flag; /* File status flags */
emilmont 1:46ce1e16c870 117 BYTE pad1;
emilmont 1:46ce1e16c870 118 DWORD fptr; /* File read/write pointer (0ed on file open) */
emilmont 1:46ce1e16c870 119 DWORD fsize; /* File size */
emilmont 1:46ce1e16c870 120 DWORD sclust; /* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
emilmont 1:46ce1e16c870 121 DWORD clust; /* Current cluster of fpter */
emilmont 1:46ce1e16c870 122 DWORD dsect; /* Current data sector of fpter */
emilmont 1:46ce1e16c870 123 #if !_FS_READONLY
emilmont 1:46ce1e16c870 124 DWORD dir_sect; /* Sector containing the directory entry */
emilmont 1:46ce1e16c870 125 BYTE* dir_ptr; /* Pointer to the directory entry in the window */
emilmont 1:46ce1e16c870 126 #endif
emilmont 1:46ce1e16c870 127 #if _USE_FASTSEEK
emilmont 1:46ce1e16c870 128 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
emilmont 1:46ce1e16c870 129 #endif
emilmont 1:46ce1e16c870 130 #if _FS_LOCK
emilmont 1:46ce1e16c870 131 UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
emilmont 1:46ce1e16c870 132 #endif
emilmont 1:46ce1e16c870 133 #if !_FS_TINY
emilmont 1:46ce1e16c870 134 BYTE buf[_MAX_SS]; /* File data read/write buffer */
emilmont 1:46ce1e16c870 135 #endif
emilmont 1:46ce1e16c870 136 } FIL;
emilmont 1:46ce1e16c870 137
emilmont 1:46ce1e16c870 138
emilmont 1:46ce1e16c870 139
emilmont 1:46ce1e16c870 140 /* Directory object structure (DIR) */
emilmont 1:46ce1e16c870 141
emilmont 1:46ce1e16c870 142 typedef struct {
emilmont 1:46ce1e16c870 143 FATFS* fs; /* Pointer to the owner file system object */
emilmont 1:46ce1e16c870 144 WORD id; /* Owner file system mount ID */
emilmont 1:46ce1e16c870 145 WORD index; /* Current read/write index number */
emilmont 1:46ce1e16c870 146 DWORD sclust; /* Table start cluster (0:Root dir) */
emilmont 1:46ce1e16c870 147 DWORD clust; /* Current cluster */
emilmont 1:46ce1e16c870 148 DWORD sect; /* Current sector */
emilmont 1:46ce1e16c870 149 BYTE* dir; /* Pointer to the current SFN entry in the win[] */
emilmont 1:46ce1e16c870 150 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
emilmont 1:46ce1e16c870 151 #if _USE_LFN
emilmont 1:46ce1e16c870 152 WCHAR* lfn; /* Pointer to the LFN working buffer */
emilmont 1:46ce1e16c870 153 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
emilmont 1:46ce1e16c870 154 #endif
emilmont 1:46ce1e16c870 155 } FATFS_DIR;
emilmont 1:46ce1e16c870 156
emilmont 1:46ce1e16c870 157
emilmont 1:46ce1e16c870 158
emilmont 1:46ce1e16c870 159 /* File status structure (FILINFO) */
emilmont 1:46ce1e16c870 160
emilmont 1:46ce1e16c870 161 typedef struct {
emilmont 1:46ce1e16c870 162 DWORD fsize; /* File size */
emilmont 1:46ce1e16c870 163 WORD fdate; /* Last modified date */
emilmont 1:46ce1e16c870 164 WORD ftime; /* Last modified time */
emilmont 1:46ce1e16c870 165 BYTE fattrib; /* Attribute */
emilmont 1:46ce1e16c870 166 TCHAR fname[13]; /* Short file name (8.3 format) */
emilmont 1:46ce1e16c870 167 #if _USE_LFN
emilmont 1:46ce1e16c870 168 TCHAR* lfname; /* Pointer to the LFN buffer */
emilmont 1:46ce1e16c870 169 UINT lfsize; /* Size of LFN buffer in TCHAR */
emilmont 1:46ce1e16c870 170 #endif
emilmont 1:46ce1e16c870 171 } FILINFO;
emilmont 1:46ce1e16c870 172
emilmont 1:46ce1e16c870 173
emilmont 1:46ce1e16c870 174
emilmont 1:46ce1e16c870 175 /* File function return code (FRESULT) */
emilmont 1:46ce1e16c870 176
emilmont 1:46ce1e16c870 177 typedef enum {
emilmont 1:46ce1e16c870 178 FR_OK = 0, /* (0) Succeeded */
emilmont 1:46ce1e16c870 179 FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
emilmont 1:46ce1e16c870 180 FR_INT_ERR, /* (2) Assertion failed */
emilmont 1:46ce1e16c870 181 FR_NOT_READY, /* (3) The physical drive cannot work */
emilmont 1:46ce1e16c870 182 FR_NO_FILE, /* (4) Could not find the file */
emilmont 1:46ce1e16c870 183 FR_NO_PATH, /* (5) Could not find the path */
emilmont 1:46ce1e16c870 184 FR_INVALID_NAME, /* (6) The path name format is invalid */
emilmont 1:46ce1e16c870 185 FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
emilmont 1:46ce1e16c870 186 FR_EXIST, /* (8) Access denied due to prohibited access */
emilmont 1:46ce1e16c870 187 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
emilmont 1:46ce1e16c870 188 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
emilmont 1:46ce1e16c870 189 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
emilmont 1:46ce1e16c870 190 FR_NOT_ENABLED, /* (12) The volume has no work area */
emilmont 1:46ce1e16c870 191 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
emilmont 1:46ce1e16c870 192 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
emilmont 1:46ce1e16c870 193 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
emilmont 1:46ce1e16c870 194 FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
emilmont 1:46ce1e16c870 195 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
emilmont 1:46ce1e16c870 196 FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
emilmont 1:46ce1e16c870 197 FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
emilmont 1:46ce1e16c870 198 } FRESULT;
emilmont 1:46ce1e16c870 199
emilmont 1:46ce1e16c870 200
emilmont 1:46ce1e16c870 201
emilmont 1:46ce1e16c870 202 /*--------------------------------------------------------------*/
emilmont 1:46ce1e16c870 203 /* FatFs module application interface */
emilmont 1:46ce1e16c870 204
emilmont 1:46ce1e16c870 205 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
emilmont 1:46ce1e16c870 206 FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
emilmont 1:46ce1e16c870 207 FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
emilmont 1:46ce1e16c870 208 FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
emilmont 1:46ce1e16c870 209 FRESULT f_close (FIL*); /* Close an open file object */
emilmont 1:46ce1e16c870 210 FRESULT f_opendir (FATFS_DIR*, const TCHAR*); /* Open an existing directory */
emilmont 1:46ce1e16c870 211 FRESULT f_readdir (FATFS_DIR*, FILINFO*); /* Read a directory item */
emilmont 1:46ce1e16c870 212 FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
emilmont 1:46ce1e16c870 213 FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
emilmont 1:46ce1e16c870 214 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
emilmont 1:46ce1e16c870 215 FRESULT f_truncate (FIL*); /* Truncate file */
emilmont 1:46ce1e16c870 216 FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
emilmont 1:46ce1e16c870 217 FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
emilmont 1:46ce1e16c870 218 FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
emilmont 1:46ce1e16c870 219 FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attribute of the file/dir */
emilmont 1:46ce1e16c870 220 FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change times-tamp of the file/dir */
emilmont 1:46ce1e16c870 221 FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
emilmont 1:46ce1e16c870 222 FRESULT f_chdrive (BYTE); /* Change current drive */
emilmont 1:46ce1e16c870 223 FRESULT f_chdir (const TCHAR*); /* Change current directory */
emilmont 1:46ce1e16c870 224 FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
emilmont 1:46ce1e16c870 225 FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
emilmont 1:46ce1e16c870 226 FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
emilmont 1:46ce1e16c870 227 FRESULT f_fdisk (BYTE, const DWORD[], void*); /* Divide a physical drive into some partitions */
emilmont 1:46ce1e16c870 228 int f_putc (TCHAR, FIL*); /* Put a character to the file */
emilmont 1:46ce1e16c870 229 int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
emilmont 1:46ce1e16c870 230 int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
emilmont 1:46ce1e16c870 231 TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
emilmont 1:46ce1e16c870 232
emilmont 1:46ce1e16c870 233 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
emilmont 1:46ce1e16c870 234 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
emilmont 1:46ce1e16c870 235 #define f_tell(fp) ((fp)->fptr)
emilmont 1:46ce1e16c870 236 #define f_size(fp) ((fp)->fsize)
emilmont 1:46ce1e16c870 237
emilmont 1:46ce1e16c870 238 #ifndef EOF
emilmont 1:46ce1e16c870 239 #define EOF (-1)
emilmont 1:46ce1e16c870 240 #endif
emilmont 1:46ce1e16c870 241
emilmont 1:46ce1e16c870 242
emilmont 1:46ce1e16c870 243
emilmont 1:46ce1e16c870 244
emilmont 1:46ce1e16c870 245 /*--------------------------------------------------------------*/
emilmont 1:46ce1e16c870 246 /* Additional user defined functions */
emilmont 1:46ce1e16c870 247
emilmont 1:46ce1e16c870 248 /* RTC function */
emilmont 1:46ce1e16c870 249 #if !_FS_READONLY
emilmont 1:46ce1e16c870 250 DWORD get_fattime (void);
emilmont 1:46ce1e16c870 251 #endif
emilmont 1:46ce1e16c870 252
emilmont 1:46ce1e16c870 253 /* Unicode support functions */
emilmont 1:46ce1e16c870 254 #if _USE_LFN /* Unicode - OEM code conversion */
emilmont 1:46ce1e16c870 255 WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
emilmont 1:46ce1e16c870 256 WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
emilmont 1:46ce1e16c870 257 #if _USE_LFN == 3 /* Memory functions */
emilmont 1:46ce1e16c870 258 void* ff_memalloc (UINT); /* Allocate memory block */
emilmont 1:46ce1e16c870 259 void ff_memfree (void*); /* Free memory block */
emilmont 1:46ce1e16c870 260 #endif
emilmont 1:46ce1e16c870 261 #endif
emilmont 1:46ce1e16c870 262
emilmont 1:46ce1e16c870 263 /* Sync functions */
emilmont 1:46ce1e16c870 264 #if _FS_REENTRANT
emilmont 1:46ce1e16c870 265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
emilmont 1:46ce1e16c870 266 int ff_req_grant (_SYNC_t); /* Lock sync object */
emilmont 1:46ce1e16c870 267 void ff_rel_grant (_SYNC_t); /* Unlock sync object */
emilmont 1:46ce1e16c870 268 int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
emilmont 1:46ce1e16c870 269 #endif
emilmont 1:46ce1e16c870 270
emilmont 1:46ce1e16c870 271
emilmont 1:46ce1e16c870 272
emilmont 1:46ce1e16c870 273
emilmont 1:46ce1e16c870 274 /*--------------------------------------------------------------*/
emilmont 1:46ce1e16c870 275 /* Flags and offset address */
emilmont 1:46ce1e16c870 276
emilmont 1:46ce1e16c870 277
emilmont 1:46ce1e16c870 278 /* File access control and file status flags (FIL.flag) */
emilmont 1:46ce1e16c870 279
emilmont 1:46ce1e16c870 280 #define FA_READ 0x01
emilmont 1:46ce1e16c870 281 #define FA_OPEN_EXISTING 0x00
emilmont 1:46ce1e16c870 282 #define FA__ERROR 0x80
emilmont 1:46ce1e16c870 283
emilmont 1:46ce1e16c870 284 #if !_FS_READONLY
emilmont 1:46ce1e16c870 285 #define FA_WRITE 0x02
emilmont 1:46ce1e16c870 286 #define FA_CREATE_NEW 0x04
emilmont 1:46ce1e16c870 287 #define FA_CREATE_ALWAYS 0x08
emilmont 1:46ce1e16c870 288 #define FA_OPEN_ALWAYS 0x10
emilmont 1:46ce1e16c870 289 #define FA__WRITTEN 0x20
emilmont 1:46ce1e16c870 290 #define FA__DIRTY 0x40
emilmont 1:46ce1e16c870 291 #endif
emilmont 1:46ce1e16c870 292
emilmont 1:46ce1e16c870 293
emilmont 1:46ce1e16c870 294 /* FAT sub type (FATFS.fs_type) */
emilmont 1:46ce1e16c870 295
emilmont 1:46ce1e16c870 296 #define FS_FAT12 1
emilmont 1:46ce1e16c870 297 #define FS_FAT16 2
emilmont 1:46ce1e16c870 298 #define FS_FAT32 3
emilmont 1:46ce1e16c870 299
emilmont 1:46ce1e16c870 300
emilmont 1:46ce1e16c870 301 /* File attribute bits for directory entry */
emilmont 1:46ce1e16c870 302
emilmont 1:46ce1e16c870 303 #define AM_RDO 0x01 /* Read only */
emilmont 1:46ce1e16c870 304 #define AM_HID 0x02 /* Hidden */
emilmont 1:46ce1e16c870 305 #define AM_SYS 0x04 /* System */
emilmont 1:46ce1e16c870 306 #define AM_VOL 0x08 /* Volume label */
emilmont 1:46ce1e16c870 307 #define AM_LFN 0x0F /* LFN entry */
emilmont 1:46ce1e16c870 308 #define AM_DIR 0x10 /* Directory */
emilmont 1:46ce1e16c870 309 #define AM_ARC 0x20 /* Archive */
emilmont 1:46ce1e16c870 310 #define AM_MASK 0x3F /* Mask of defined bits */
emilmont 1:46ce1e16c870 311
emilmont 1:46ce1e16c870 312
emilmont 1:46ce1e16c870 313 /* Fast seek feature */
emilmont 1:46ce1e16c870 314 #define CREATE_LINKMAP 0xFFFFFFFF
emilmont 1:46ce1e16c870 315
emilmont 1:46ce1e16c870 316
emilmont 1:46ce1e16c870 317
emilmont 1:46ce1e16c870 318 /*--------------------------------*/
emilmont 1:46ce1e16c870 319 /* Multi-byte word access macros */
emilmont 1:46ce1e16c870 320
emilmont 1:46ce1e16c870 321 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
emilmont 1:46ce1e16c870 322 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
emilmont 1:46ce1e16c870 323 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
emilmont 1:46ce1e16c870 324 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
emilmont 1:46ce1e16c870 325 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
emilmont 1:46ce1e16c870 326 #else /* Use byte-by-byte access to the FAT structure */
emilmont 1:46ce1e16c870 327 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
emilmont 1:46ce1e16c870 328 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
emilmont 1:46ce1e16c870 329 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
emilmont 1:46ce1e16c870 330 #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)
emilmont 1:46ce1e16c870 331 #endif
emilmont 1:46ce1e16c870 332
emilmont 1:46ce1e16c870 333 #ifdef __cplusplus
emilmont 1:46ce1e16c870 334 }
emilmont 1:46ce1e16c870 335 #endif
emilmont 1:46ce1e16c870 336
emilmont 1:46ce1e16c870 337 #endif /* _FATFS */