Atsushi Hattori
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ff.h
00001 /*---------------------------------------------------------------------------/ 00002 / FatFs - FAT file system module include file R0.08b (C)ChaN, 2011 00003 /----------------------------------------------------------------------------/ 00004 / FatFs module is a generic FAT file system module for small embedded systems. 00005 / This is a free software that opened for education, research and commercial 00006 / developments under license policy of following trems. 00007 / 00008 / Copyright (C) 2011, ChaN, all right reserved. 00009 / 00010 / * The FatFs module is a free software and there is NO WARRANTY. 00011 / * No restriction on use. You can use, modify and redistribute it for 00012 / personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY. 00013 / * Redistributions of source code must retain the above copyright notice. 00014 / 00015 /----------------------------------------------------------------------------*/ 00016 00017 #ifndef _FATFS 00018 #define _FATFS 8237 /* Revision ID */ 00019 00020 #ifdef __cplusplus 00021 extern "C" { 00022 #endif 00023 00024 #include "integer.h" /* Basic integer types */ 00025 #include "ffconf.h" /* FatFs configuration options */ 00026 00027 #if _FATFS != _FFCONF 00028 #error Wrong configuration file (ffconf.h). 00029 #endif 00030 00031 00032 00033 #define _DRIVES 4 00034 /* Number of logical drives to be used. This affects the size of internal table. */ 00035 /* Definitions of volume management */ 00036 00037 #if _MULTI_PARTITION /* Multiple partition configuration */ 00038 #define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive# */ 00039 #define LD2PT(vol) (VolToPart[vol].pt) /* Get partition# */ 00040 typedef struct { 00041 BYTE pd; /* Physical drive# */ 00042 BYTE pt; /* Partition # (0-3) */ 00043 } PARTITION; 00044 extern const PARTITION VolToPart[]; /* Volume - Physical location resolution table */ 00045 00046 #else /* Single partition configuration */ 00047 #define LD2PD(vol) (vol) /* Logical drive# is bound to the same physical drive# */ 00048 #define LD2PT(vol) 0 /* Always mounts the 1st partition */ 00049 00050 #endif 00051 00052 00053 00054 /* Type of path name strings on FatFs API */ 00055 00056 #if _LFN_UNICODE /* Unicode string */ 00057 #if !_USE_LFN 00058 #error _LFN_UNICODE must be 0 in non-LFN cfg. 00059 #endif 00060 #ifndef _INC_TCHAR 00061 typedef WCHAR TCHAR; 00062 #define _T(x) L ## x 00063 #define _TEXT(x) L ## x 00064 #endif 00065 00066 #else /* ANSI/OEM string */ 00067 #ifndef _INC_TCHAR 00068 typedef char TCHAR; 00069 #define _T(x) x 00070 #define _TEXT(x) x 00071 #endif 00072 00073 #endif 00074 00075 00076 00077 /* File system object structure (FATFS) */ 00078 00079 typedef struct { 00080 BYTE fs_type; /* FAT sub-type (0:Not mounted) */ 00081 BYTE drv; /* Physical drive number */ 00082 BYTE csize; /* Sectors per cluster (1,2,4...128) */ 00083 BYTE n_fats; /* Number of FAT copies (1,2) */ 00084 BYTE wflag; /* win[] dirty flag (1:must be written back) */ 00085 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */ 00086 WORD id; /* File system mount ID */ 00087 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */ 00088 #if _MAX_SS != 512 00089 WORD ssize; /* Bytes per sector (512,1024,2048,4096) */ 00090 #endif 00091 #if _FS_REENTRANT 00092 _SYNC_t sobj; /* Identifier of sync object */ 00093 #endif 00094 #if !_FS_READONLY 00095 DWORD last_clust; /* Last allocated cluster */ 00096 DWORD free_clust; /* Number of free clusters */ 00097 DWORD fsi_sector; /* fsinfo sector (FAT32) */ 00098 #endif 00099 #if _FS_RPATH 00100 DWORD cdir; /* Current directory start cluster (0:root) */ 00101 #endif 00102 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */ 00103 DWORD fsize; /* Sectors per FAT */ 00104 DWORD fatbase; /* FAT start sector */ 00105 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */ 00106 DWORD database; /* Data start sector */ 00107 DWORD winsect; /* Current sector appearing in the win[] */ 00108 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */ 00109 } FATFS; 00110 00111 00112 00113 /* File object structure (FIL) */ 00114 00115 typedef struct { 00116 FATFS* fs; /* Pointer to the owner file system object */ 00117 WORD id; /* Owner file system mount ID */ 00118 BYTE flag; /* File status flags */ 00119 BYTE pad1; 00120 DWORD fptr; /* File read/write pointer (0 on file open) */ 00121 DWORD fsize; /* File size */ 00122 DWORD sclust; /* File start cluster (0 when fsize==0) */ 00123 DWORD clust; /* Current cluster */ 00124 DWORD dsect; /* Current data sector */ 00125 #if !_FS_READONLY 00126 DWORD dir_sect; /* Sector containing the directory entry */ 00127 BYTE* dir_ptr; /* Ponter to the directory entry in the window */ 00128 #endif 00129 #if _USE_FASTSEEK 00130 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */ 00131 #endif 00132 #if _FS_SHARE 00133 UINT lockid; /* File lock ID (index of file semaphore table) */ 00134 #endif 00135 #if !_FS_TINY 00136 BYTE buf[_MAX_SS]; /* File data read/write buffer */ 00137 #endif 00138 } FIL_t; 00139 00140 00141 00142 /* Directory object structure (DIR) */ 00143 00144 typedef struct { 00145 FATFS* fs; /* Pointer to the owner file system object */ 00146 WORD id; /* Owner file system mount ID */ 00147 WORD index; /* Current read/write index number */ 00148 DWORD sclust; /* Table start cluster (0:Root dir) */ 00149 DWORD clust; /* Current cluster */ 00150 DWORD sect; /* Current sector */ 00151 BYTE* dir; /* Pointer to the current SFN entry in the win[] */ 00152 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */ 00153 #if _USE_LFN 00154 WCHAR* lfn; /* Pointer to the LFN working buffer */ 00155 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */ 00156 #endif 00157 } DIR_t; 00158 00159 00160 00161 /* File status structure (FILINFO) */ 00162 00163 typedef struct { 00164 DWORD fsize; /* File size */ 00165 WORD fdate; /* Last modified date */ 00166 WORD ftime; /* Last modified time */ 00167 BYTE fattrib; /* Attribute */ 00168 TCHAR fname[13]; /* Short file name (8.3 format) */ 00169 #if _USE_LFN 00170 TCHAR* lfname; /* Pointer to the LFN buffer */ 00171 UINT lfsize; /* Size of LFN buffer in TCHAR */ 00172 #endif 00173 } FILINFO; 00174 00175 00176 00177 /* File function return code (FRESULT) */ 00178 00179 typedef enum { 00180 FR_OK = 0, /* (0) Succeeded */ 00181 FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */ 00182 FR_INT_ERR, /* (2) Assertion failed */ 00183 FR_NOT_READY, /* (3) The physical drive cannot work */ 00184 FR_NO_FILE, /* (4) Could not find the file */ 00185 FR_NO_PATH, /* (5) Could not find the path */ 00186 FR_INVALID_NAME, /* (6) The path name format is invalid */ 00187 FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */ 00188 FR_EXIST, /* (8) Acces denied due to prohibited access */ 00189 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */ 00190 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */ 00191 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */ 00192 FR_NOT_ENABLED, /* (12) The volume has no work area */ 00193 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */ 00194 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */ 00195 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */ 00196 FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */ 00197 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */ 00198 FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */ 00199 } FRESULT; 00200 00201 00202 00203 /*--------------------------------------------------------------*/ 00204 /* FatFs module application interface */ 00205 00206 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */ 00207 FRESULT f_open (FIL_t*, const TCHAR*, BYTE); /* Open or create a file */ 00208 FRESULT f_read (FIL_t*, void*, UINT, UINT*); /* Read data from a file */ 00209 FRESULT f_lseek (FIL_t*, DWORD); /* Move file pointer of a file object */ 00210 FRESULT f_close (FIL_t*); /* Close an open file object */ 00211 FRESULT f_opendir (DIR_t*, const TCHAR*); /* Open an existing directory */ 00212 FRESULT f_readdir (DIR_t*, FILINFO*); /* Read a directory item */ 00213 FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */ 00214 FRESULT f_write (FIL_t*, const void*, UINT, UINT*); /* Write data to a file */ 00215 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */ 00216 FRESULT f_truncate (FIL_t*); /* Truncate file */ 00217 FRESULT f_sync (FIL_t*); /* Flush cached data of a writing file */ 00218 FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */ 00219 FRESULT f_mkdir (const TCHAR*); /* Create a new directory */ 00220 FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */ 00221 FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */ 00222 FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */ 00223 FRESULT f_forward (FIL_t*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */ 00224 FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */ 00225 FRESULT f_chdrive (BYTE); /* Change current drive */ 00226 FRESULT f_chdir (const TCHAR*); /* Change current directory */ 00227 FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */ 00228 int f_putc (TCHAR, FIL_t*); /* Put a character to the file */ 00229 int f_puts (const TCHAR*, FIL_t*); /* Put a string to the file */ 00230 int f_printf (FIL_t*, const TCHAR*, ...); /* Put a formatted string to the file */ 00231 TCHAR* f_gets (TCHAR*, int, FIL_t*); /* Get a string from the file */ 00232 00233 #ifndef EOF 00234 #define EOF (-1) 00235 #endif 00236 00237 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0) 00238 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0) 00239 #define f_tell(fp) ((fp)->fptr) 00240 #define f_size(fp) ((fp)->fsize) 00241 00242 00243 00244 00245 /*--------------------------------------------------------------*/ 00246 /* Additional user defined functions */ 00247 00248 /* RTC function */ 00249 #if !_FS_READONLY 00250 DWORD get_fattime (void); 00251 #endif 00252 00253 /* Unicode support functions */ 00254 #if _USE_LFN /* Unicode - OEM code conversion */ 00255 WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */ 00256 WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */ 00257 #if _USE_LFN == 3 /* Memory functions */ 00258 void* ff_memalloc (UINT); /* Allocate memory block */ 00259 void ff_memfree (void*); /* Free memory block */ 00260 #endif 00261 #endif 00262 00263 /* Sync functions */ 00264 #if _FS_REENTRANT 00265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */ 00266 int ff_req_grant (_SYNC_t); /* Lock sync object */ 00267 void ff_rel_grant (_SYNC_t); /* Unlock sync object */ 00268 int ff_del_syncobj (_SYNC_t); /* Delete a sync object */ 00269 #endif 00270 00271 00272 00273 00274 /*--------------------------------------------------------------*/ 00275 /* Flags and offset address */ 00276 00277 00278 /* File access control and file status flags (FIL.flag) */ 00279 00280 #define FA_READ 0x01 00281 #define FA_OPEN_EXISTING 0x00 00282 #define FA__ERROR 0x80 00283 00284 #if !_FS_READONLY 00285 #define FA_WRITE 0x02 00286 #define FA_CREATE_NEW 0x04 00287 #define FA_CREATE_ALWAYS 0x08 00288 #define FA_OPEN_ALWAYS 0x10 00289 #define FA__WRITTEN 0x20 00290 #define FA__DIRTY 0x40 00291 #endif 00292 00293 00294 /* FAT sub type (FATFS.fs_type) */ 00295 00296 #define FS_FAT12 1 00297 #define FS_FAT16 2 00298 #define FS_FAT32 3 00299 00300 00301 /* File attribute bits for directory entry */ 00302 00303 #define AM_RDO 0x01 /* Read only */ 00304 #define AM_HID 0x02 /* Hidden */ 00305 #define AM_SYS 0x04 /* System */ 00306 #define AM_VOL 0x08 /* Volume label */ 00307 #define AM_LFN 0x0F /* LFN entry */ 00308 #define AM_DIR 0x10 /* Directory */ 00309 #define AM_ARC 0x20 /* Archive */ 00310 #define AM_MASK 0x3F /* Mask of defined bits */ 00311 00312 00313 /* Fast seek function */ 00314 #define CREATE_LINKMAP 0xFFFFFFFF 00315 00316 00317 00318 /*--------------------------------*/ 00319 /* Multi-byte word access macros */ 00320 00321 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */ 00322 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr)) 00323 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr)) 00324 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val) 00325 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val) 00326 #else /* Use byte-by-byte access to the FAT structure */ 00327 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr)) 00328 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr)) 00329 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8) 00330 #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) 00331 #endif 00332 00333 #ifdef __cplusplus 00334 } 00335 #endif 00336 00337 #endif /* _FATFS */
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