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ECE 2035 final project

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SDFileSystem/FATFileSystem/ChaN/ff.h@0:35660d7952f7, 2018-03-30 (annotated)

Committer:
rconnorlawson
Date:
Fri Mar 30 17:07:25 2018 +0000
Revision:
0:35660d7952f7
Hollowed out shell code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rconnorlawson 0:35660d7952f7 1 /*---------------------------------------------------------------------------/
rconnorlawson 0:35660d7952f7 2 / FatFs - FAT file system module include file R0.09a (C)ChaN, 2012
rconnorlawson 0:35660d7952f7 3 /----------------------------------------------------------------------------/
rconnorlawson 0:35660d7952f7 4 / FatFs module is a generic FAT file system module for small embedded systems.
rconnorlawson 0:35660d7952f7 5 / This is a free software that opened for education, research and commercial
rconnorlawson 0:35660d7952f7 6 / developments under license policy of following terms.
rconnorlawson 0:35660d7952f7 7 /
rconnorlawson 0:35660d7952f7 8 / Copyright (C) 2012, ChaN, all right reserved.
rconnorlawson 0:35660d7952f7 9 /
rconnorlawson 0:35660d7952f7 10 / * The FatFs module is a free software and there is NO WARRANTY.
rconnorlawson 0:35660d7952f7 11 / * No restriction on use. You can use, modify and redistribute it for
rconnorlawson 0:35660d7952f7 12 / personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
rconnorlawson 0:35660d7952f7 13 / * Redistributions of source code must retain the above copyright notice.
rconnorlawson 0:35660d7952f7 14 /
rconnorlawson 0:35660d7952f7 15 /----------------------------------------------------------------------------*/
rconnorlawson 0:35660d7952f7 16
rconnorlawson 0:35660d7952f7 17 #ifndef _FATFS
rconnorlawson 0:35660d7952f7 18 #define _FATFS 4004 /* Revision ID */
rconnorlawson 0:35660d7952f7 19
rconnorlawson 0:35660d7952f7 20 #ifdef __cplusplus
rconnorlawson 0:35660d7952f7 21 extern "C" {
rconnorlawson 0:35660d7952f7 22 #endif
rconnorlawson 0:35660d7952f7 23
rconnorlawson 0:35660d7952f7 24 #include "integer.h" /* Basic integer types */
rconnorlawson 0:35660d7952f7 25 #include "ffconf.h" /* FatFs configuration options */
rconnorlawson 0:35660d7952f7 26
rconnorlawson 0:35660d7952f7 27 #if _FATFS != _FFCONF
rconnorlawson 0:35660d7952f7 28 #error Wrong configuration file (ffconf.h).
rconnorlawson 0:35660d7952f7 29 #endif
rconnorlawson 0:35660d7952f7 30
rconnorlawson 0:35660d7952f7 31
rconnorlawson 0:35660d7952f7 32
rconnorlawson 0:35660d7952f7 33 /* Definitions of volume management */
rconnorlawson 0:35660d7952f7 34
rconnorlawson 0:35660d7952f7 35 #if _MULTI_PARTITION /* Multiple partition configuration */
rconnorlawson 0:35660d7952f7 36 typedef struct {
rconnorlawson 0:35660d7952f7 37 BYTE pd; /* Physical drive number */
rconnorlawson 0:35660d7952f7 38 BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
rconnorlawson 0:35660d7952f7 39 } PARTITION;
rconnorlawson 0:35660d7952f7 40 extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
rconnorlawson 0:35660d7952f7 41 #define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
rconnorlawson 0:35660d7952f7 42 #define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
rconnorlawson 0:35660d7952f7 43
rconnorlawson 0:35660d7952f7 44 #else /* Single partition configuration */
rconnorlawson 0:35660d7952f7 45 #define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
rconnorlawson 0:35660d7952f7 46 #define LD2PT(vol) 0 /* Always mounts the 1st partition or in SFD */
rconnorlawson 0:35660d7952f7 47
rconnorlawson 0:35660d7952f7 48 #endif
rconnorlawson 0:35660d7952f7 49
rconnorlawson 0:35660d7952f7 50
rconnorlawson 0:35660d7952f7 51
rconnorlawson 0:35660d7952f7 52 /* Type of path name strings on FatFs API */
rconnorlawson 0:35660d7952f7 53
rconnorlawson 0:35660d7952f7 54 #if _LFN_UNICODE /* Unicode string */
rconnorlawson 0:35660d7952f7 55 #if !_USE_LFN
rconnorlawson 0:35660d7952f7 56 #error _LFN_UNICODE must be 0 in non-LFN cfg.
rconnorlawson 0:35660d7952f7 57 #endif
rconnorlawson 0:35660d7952f7 58 #ifndef _INC_TCHAR
rconnorlawson 0:35660d7952f7 59 typedef WCHAR TCHAR;
rconnorlawson 0:35660d7952f7 60 #define _T(x) L ## x
rconnorlawson 0:35660d7952f7 61 #define _TEXT(x) L ## x
rconnorlawson 0:35660d7952f7 62 #endif
rconnorlawson 0:35660d7952f7 63
rconnorlawson 0:35660d7952f7 64 #else /* ANSI/OEM string */
rconnorlawson 0:35660d7952f7 65 #ifndef _INC_TCHAR
rconnorlawson 0:35660d7952f7 66 typedef char TCHAR;
rconnorlawson 0:35660d7952f7 67 #define _T(x) x
rconnorlawson 0:35660d7952f7 68 #define _TEXT(x) x
rconnorlawson 0:35660d7952f7 69 #endif
rconnorlawson 0:35660d7952f7 70
rconnorlawson 0:35660d7952f7 71 #endif
rconnorlawson 0:35660d7952f7 72
rconnorlawson 0:35660d7952f7 73
rconnorlawson 0:35660d7952f7 74
rconnorlawson 0:35660d7952f7 75 /* File system object structure (FATFS) */
rconnorlawson 0:35660d7952f7 76
rconnorlawson 0:35660d7952f7 77 typedef struct {
rconnorlawson 0:35660d7952f7 78 BYTE fs_type; /* FAT sub-type (0:Not mounted) */
rconnorlawson 0:35660d7952f7 79 BYTE drv; /* Physical drive number */
rconnorlawson 0:35660d7952f7 80 BYTE csize; /* Sectors per cluster (1,2,4...128) */
rconnorlawson 0:35660d7952f7 81 BYTE n_fats; /* Number of FAT copies (1,2) */
rconnorlawson 0:35660d7952f7 82 BYTE wflag; /* win[] dirty flag (1:must be written back) */
rconnorlawson 0:35660d7952f7 83 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
rconnorlawson 0:35660d7952f7 84 WORD id; /* File system mount ID */
rconnorlawson 0:35660d7952f7 85 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
rconnorlawson 0:35660d7952f7 86 #if _MAX_SS != 512
rconnorlawson 0:35660d7952f7 87 WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */
rconnorlawson 0:35660d7952f7 88 #endif
rconnorlawson 0:35660d7952f7 89 #if _FS_REENTRANT
rconnorlawson 0:35660d7952f7 90 _SYNC_t sobj; /* Identifier of sync object */
rconnorlawson 0:35660d7952f7 91 #endif
rconnorlawson 0:35660d7952f7 92 #if !_FS_READONLY
rconnorlawson 0:35660d7952f7 93 DWORD last_clust; /* Last allocated cluster */
rconnorlawson 0:35660d7952f7 94 DWORD free_clust; /* Number of free clusters */
rconnorlawson 0:35660d7952f7 95 DWORD fsi_sector; /* fsinfo sector (FAT32) */
rconnorlawson 0:35660d7952f7 96 #endif
rconnorlawson 0:35660d7952f7 97 #if _FS_RPATH
rconnorlawson 0:35660d7952f7 98 DWORD cdir; /* Current directory start cluster (0:root) */
rconnorlawson 0:35660d7952f7 99 #endif
rconnorlawson 0:35660d7952f7 100 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
rconnorlawson 0:35660d7952f7 101 DWORD fsize; /* Sectors per FAT */
rconnorlawson 0:35660d7952f7 102 DWORD fatbase; /* FAT start sector */
rconnorlawson 0:35660d7952f7 103 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
rconnorlawson 0:35660d7952f7 104 DWORD database; /* Data start sector */
rconnorlawson 0:35660d7952f7 105 DWORD winsect; /* Current sector appearing in the win[] */
rconnorlawson 0:35660d7952f7 106 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
rconnorlawson 0:35660d7952f7 107 } FATFS;
rconnorlawson 0:35660d7952f7 108
rconnorlawson 0:35660d7952f7 109
rconnorlawson 0:35660d7952f7 110
rconnorlawson 0:35660d7952f7 111 /* File object structure (FIL) */
rconnorlawson 0:35660d7952f7 112
rconnorlawson 0:35660d7952f7 113 typedef struct {
rconnorlawson 0:35660d7952f7 114 FATFS* fs; /* Pointer to the related file system object */
rconnorlawson 0:35660d7952f7 115 WORD id; /* File system mount ID of the related file system object */
rconnorlawson 0:35660d7952f7 116 BYTE flag; /* File status flags */
rconnorlawson 0:35660d7952f7 117 BYTE pad1;
rconnorlawson 0:35660d7952f7 118 DWORD fptr; /* File read/write pointer (0ed on file open) */
rconnorlawson 0:35660d7952f7 119 DWORD fsize; /* File size */
rconnorlawson 0:35660d7952f7 120 DWORD sclust; /* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
rconnorlawson 0:35660d7952f7 121 DWORD clust; /* Current cluster of fpter */
rconnorlawson 0:35660d7952f7 122 DWORD dsect; /* Current data sector of fpter */
rconnorlawson 0:35660d7952f7 123 #if !_FS_READONLY
rconnorlawson 0:35660d7952f7 124 DWORD dir_sect; /* Sector containing the directory entry */
rconnorlawson 0:35660d7952f7 125 BYTE* dir_ptr; /* Pointer to the directory entry in the window */
rconnorlawson 0:35660d7952f7 126 #endif
rconnorlawson 0:35660d7952f7 127 #if _USE_FASTSEEK
rconnorlawson 0:35660d7952f7 128 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
rconnorlawson 0:35660d7952f7 129 #endif
rconnorlawson 0:35660d7952f7 130 #if _FS_LOCK
rconnorlawson 0:35660d7952f7 131 UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
rconnorlawson 0:35660d7952f7 132 #endif
rconnorlawson 0:35660d7952f7 133 #if !_FS_TINY
rconnorlawson 0:35660d7952f7 134 BYTE buf[_MAX_SS]; /* File data read/write buffer */
rconnorlawson 0:35660d7952f7 135 #endif
rconnorlawson 0:35660d7952f7 136 } FIL;
rconnorlawson 0:35660d7952f7 137
rconnorlawson 0:35660d7952f7 138
rconnorlawson 0:35660d7952f7 139
rconnorlawson 0:35660d7952f7 140 /* Directory object structure (DIR) */
rconnorlawson 0:35660d7952f7 141
rconnorlawson 0:35660d7952f7 142 typedef struct {
rconnorlawson 0:35660d7952f7 143 FATFS* fs; /* Pointer to the owner file system object */
rconnorlawson 0:35660d7952f7 144 WORD id; /* Owner file system mount ID */
rconnorlawson 0:35660d7952f7 145 WORD index; /* Current read/write index number */
rconnorlawson 0:35660d7952f7 146 DWORD sclust; /* Table start cluster (0:Root dir) */
rconnorlawson 0:35660d7952f7 147 DWORD clust; /* Current cluster */
rconnorlawson 0:35660d7952f7 148 DWORD sect; /* Current sector */
rconnorlawson 0:35660d7952f7 149 BYTE* dir; /* Pointer to the current SFN entry in the win[] */
rconnorlawson 0:35660d7952f7 150 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
rconnorlawson 0:35660d7952f7 151 #if _USE_LFN
rconnorlawson 0:35660d7952f7 152 WCHAR* lfn; /* Pointer to the LFN working buffer */
rconnorlawson 0:35660d7952f7 153 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
rconnorlawson 0:35660d7952f7 154 #endif
rconnorlawson 0:35660d7952f7 155 } FATFS_DIR;
rconnorlawson 0:35660d7952f7 156
rconnorlawson 0:35660d7952f7 157
rconnorlawson 0:35660d7952f7 158
rconnorlawson 0:35660d7952f7 159 /* File status structure (FILINFO) */
rconnorlawson 0:35660d7952f7 160
rconnorlawson 0:35660d7952f7 161 typedef struct {
rconnorlawson 0:35660d7952f7 162 DWORD fsize; /* File size */
rconnorlawson 0:35660d7952f7 163 WORD fdate; /* Last modified date */
rconnorlawson 0:35660d7952f7 164 WORD ftime; /* Last modified time */
rconnorlawson 0:35660d7952f7 165 BYTE fattrib; /* Attribute */
rconnorlawson 0:35660d7952f7 166 TCHAR fname[13]; /* Short file name (8.3 format) */
rconnorlawson 0:35660d7952f7 167 #if _USE_LFN
rconnorlawson 0:35660d7952f7 168 TCHAR* lfname; /* Pointer to the LFN buffer */
rconnorlawson 0:35660d7952f7 169 UINT lfsize; /* Size of LFN buffer in TCHAR */
rconnorlawson 0:35660d7952f7 170 #endif
rconnorlawson 0:35660d7952f7 171 } FILINFO;
rconnorlawson 0:35660d7952f7 172
rconnorlawson 0:35660d7952f7 173
rconnorlawson 0:35660d7952f7 174
rconnorlawson 0:35660d7952f7 175 /* File function return code (FRESULT) */
rconnorlawson 0:35660d7952f7 176
rconnorlawson 0:35660d7952f7 177 typedef enum {
rconnorlawson 0:35660d7952f7 178 FR_OK = 0, /* (0) Succeeded */
rconnorlawson 0:35660d7952f7 179 FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
rconnorlawson 0:35660d7952f7 180 FR_INT_ERR, /* (2) Assertion failed */
rconnorlawson 0:35660d7952f7 181 FR_NOT_READY, /* (3) The physical drive cannot work */
rconnorlawson 0:35660d7952f7 182 FR_NO_FILE, /* (4) Could not find the file */
rconnorlawson 0:35660d7952f7 183 FR_NO_PATH, /* (5) Could not find the path */
rconnorlawson 0:35660d7952f7 184 FR_INVALID_NAME, /* (6) The path name format is invalid */
rconnorlawson 0:35660d7952f7 185 FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
rconnorlawson 0:35660d7952f7 186 FR_EXIST, /* (8) Access denied due to prohibited access */
rconnorlawson 0:35660d7952f7 187 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
rconnorlawson 0:35660d7952f7 188 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
rconnorlawson 0:35660d7952f7 189 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
rconnorlawson 0:35660d7952f7 190 FR_NOT_ENABLED, /* (12) The volume has no work area */
rconnorlawson 0:35660d7952f7 191 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
rconnorlawson 0:35660d7952f7 192 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
rconnorlawson 0:35660d7952f7 193 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
rconnorlawson 0:35660d7952f7 194 FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
rconnorlawson 0:35660d7952f7 195 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
rconnorlawson 0:35660d7952f7 196 FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
rconnorlawson 0:35660d7952f7 197 FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
rconnorlawson 0:35660d7952f7 198 } FRESULT;
rconnorlawson 0:35660d7952f7 199
rconnorlawson 0:35660d7952f7 200
rconnorlawson 0:35660d7952f7 201
rconnorlawson 0:35660d7952f7 202 /*--------------------------------------------------------------*/
rconnorlawson 0:35660d7952f7 203 /* FatFs module application interface */
rconnorlawson 0:35660d7952f7 204
rconnorlawson 0:35660d7952f7 205 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
rconnorlawson 0:35660d7952f7 206 FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
rconnorlawson 0:35660d7952f7 207 FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
rconnorlawson 0:35660d7952f7 208 FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
rconnorlawson 0:35660d7952f7 209 FRESULT f_close (FIL*); /* Close an open file object */
rconnorlawson 0:35660d7952f7 210 FRESULT f_opendir (FATFS_DIR*, const TCHAR*); /* Open an existing directory */
rconnorlawson 0:35660d7952f7 211 FRESULT f_readdir (FATFS_DIR*, FILINFO*); /* Read a directory item */
rconnorlawson 0:35660d7952f7 212 FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
rconnorlawson 0:35660d7952f7 213 FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
rconnorlawson 0:35660d7952f7 214 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
rconnorlawson 0:35660d7952f7 215 FRESULT f_truncate (FIL*); /* Truncate file */
rconnorlawson 0:35660d7952f7 216 FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
rconnorlawson 0:35660d7952f7 217 FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
rconnorlawson 0:35660d7952f7 218 FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
rconnorlawson 0:35660d7952f7 219 FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attribute of the file/dir */
rconnorlawson 0:35660d7952f7 220 FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change times-tamp of the file/dir */
rconnorlawson 0:35660d7952f7 221 FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
rconnorlawson 0:35660d7952f7 222 FRESULT f_chdrive (BYTE); /* Change current drive */
rconnorlawson 0:35660d7952f7 223 FRESULT f_chdir (const TCHAR*); /* Change current directory */
rconnorlawson 0:35660d7952f7 224 FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
rconnorlawson 0:35660d7952f7 225 FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
rconnorlawson 0:35660d7952f7 226 FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
rconnorlawson 0:35660d7952f7 227 FRESULT f_fdisk (BYTE, const DWORD[], void*); /* Divide a physical drive into some partitions */
rconnorlawson 0:35660d7952f7 228 int f_putc (TCHAR, FIL*); /* Put a character to the file */
rconnorlawson 0:35660d7952f7 229 int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
rconnorlawson 0:35660d7952f7 230 int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
rconnorlawson 0:35660d7952f7 231 TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
rconnorlawson 0:35660d7952f7 232
rconnorlawson 0:35660d7952f7 233 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
rconnorlawson 0:35660d7952f7 234 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
rconnorlawson 0:35660d7952f7 235 #define f_tell(fp) ((fp)->fptr)
rconnorlawson 0:35660d7952f7 236 #define f_size(fp) ((fp)->fsize)
rconnorlawson 0:35660d7952f7 237
rconnorlawson 0:35660d7952f7 238 #ifndef EOF
rconnorlawson 0:35660d7952f7 239 #define EOF (-1)
rconnorlawson 0:35660d7952f7 240 #endif
rconnorlawson 0:35660d7952f7 241
rconnorlawson 0:35660d7952f7 242
rconnorlawson 0:35660d7952f7 243
rconnorlawson 0:35660d7952f7 244
rconnorlawson 0:35660d7952f7 245 /*--------------------------------------------------------------*/
rconnorlawson 0:35660d7952f7 246 /* Additional user defined functions */
rconnorlawson 0:35660d7952f7 247
rconnorlawson 0:35660d7952f7 248 /* RTC function */
rconnorlawson 0:35660d7952f7 249 #if !_FS_READONLY
rconnorlawson 0:35660d7952f7 250 DWORD get_fattime (void);
rconnorlawson 0:35660d7952f7 251 #endif
rconnorlawson 0:35660d7952f7 252
rconnorlawson 0:35660d7952f7 253 /* Unicode support functions */
rconnorlawson 0:35660d7952f7 254 #if _USE_LFN /* Unicode - OEM code conversion */
rconnorlawson 0:35660d7952f7 255 WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
rconnorlawson 0:35660d7952f7 256 WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
rconnorlawson 0:35660d7952f7 257 #if _USE_LFN == 3 /* Memory functions */
rconnorlawson 0:35660d7952f7 258 void* ff_memalloc (UINT); /* Allocate memory block */
rconnorlawson 0:35660d7952f7 259 void ff_memfree (void*); /* Free memory block */
rconnorlawson 0:35660d7952f7 260 #endif
rconnorlawson 0:35660d7952f7 261 #endif
rconnorlawson 0:35660d7952f7 262
rconnorlawson 0:35660d7952f7 263 /* Sync functions */
rconnorlawson 0:35660d7952f7 264 #if _FS_REENTRANT
rconnorlawson 0:35660d7952f7 265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
rconnorlawson 0:35660d7952f7 266 int ff_req_grant (_SYNC_t); /* Lock sync object */
rconnorlawson 0:35660d7952f7 267 void ff_rel_grant (_SYNC_t); /* Unlock sync object */
rconnorlawson 0:35660d7952f7 268 int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
rconnorlawson 0:35660d7952f7 269 #endif
rconnorlawson 0:35660d7952f7 270
rconnorlawson 0:35660d7952f7 271
rconnorlawson 0:35660d7952f7 272
rconnorlawson 0:35660d7952f7 273
rconnorlawson 0:35660d7952f7 274 /*--------------------------------------------------------------*/
rconnorlawson 0:35660d7952f7 275 /* Flags and offset address */
rconnorlawson 0:35660d7952f7 276
rconnorlawson 0:35660d7952f7 277
rconnorlawson 0:35660d7952f7 278 /* File access control and file status flags (FIL.flag) */
rconnorlawson 0:35660d7952f7 279
rconnorlawson 0:35660d7952f7 280 #define FA_READ 0x01
rconnorlawson 0:35660d7952f7 281 #define FA_OPEN_EXISTING 0x00
rconnorlawson 0:35660d7952f7 282 #define FA__ERROR 0x80
rconnorlawson 0:35660d7952f7 283
rconnorlawson 0:35660d7952f7 284 #if !_FS_READONLY
rconnorlawson 0:35660d7952f7 285 #define FA_WRITE 0x02
rconnorlawson 0:35660d7952f7 286 #define FA_CREATE_NEW 0x04
rconnorlawson 0:35660d7952f7 287 #define FA_CREATE_ALWAYS 0x08
rconnorlawson 0:35660d7952f7 288 #define FA_OPEN_ALWAYS 0x10
rconnorlawson 0:35660d7952f7 289 #define FA__WRITTEN 0x20
rconnorlawson 0:35660d7952f7 290 #define FA__DIRTY 0x40
rconnorlawson 0:35660d7952f7 291 #endif
rconnorlawson 0:35660d7952f7 292
rconnorlawson 0:35660d7952f7 293
rconnorlawson 0:35660d7952f7 294 /* FAT sub type (FATFS.fs_type) */
rconnorlawson 0:35660d7952f7 295
rconnorlawson 0:35660d7952f7 296 #define FS_FAT12 1
rconnorlawson 0:35660d7952f7 297 #define FS_FAT16 2
rconnorlawson 0:35660d7952f7 298 #define FS_FAT32 3
rconnorlawson 0:35660d7952f7 299
rconnorlawson 0:35660d7952f7 300
rconnorlawson 0:35660d7952f7 301 /* File attribute bits for directory entry */
rconnorlawson 0:35660d7952f7 302
rconnorlawson 0:35660d7952f7 303 #define AM_RDO 0x01 /* Read only */
rconnorlawson 0:35660d7952f7 304 #define AM_HID 0x02 /* Hidden */
rconnorlawson 0:35660d7952f7 305 #define AM_SYS 0x04 /* System */
rconnorlawson 0:35660d7952f7 306 #define AM_VOL 0x08 /* Volume label */
rconnorlawson 0:35660d7952f7 307 #define AM_LFN 0x0F /* LFN entry */
rconnorlawson 0:35660d7952f7 308 #define AM_DIR 0x10 /* Directory */
rconnorlawson 0:35660d7952f7 309 #define AM_ARC 0x20 /* Archive */
rconnorlawson 0:35660d7952f7 310 #define AM_MASK 0x3F /* Mask of defined bits */
rconnorlawson 0:35660d7952f7 311
rconnorlawson 0:35660d7952f7 312
rconnorlawson 0:35660d7952f7 313 /* Fast seek feature */
rconnorlawson 0:35660d7952f7 314 #define CREATE_LINKMAP 0xFFFFFFFF
rconnorlawson 0:35660d7952f7 315
rconnorlawson 0:35660d7952f7 316
rconnorlawson 0:35660d7952f7 317
rconnorlawson 0:35660d7952f7 318 /*--------------------------------*/
rconnorlawson 0:35660d7952f7 319 /* Multi-byte word access macros */
rconnorlawson 0:35660d7952f7 320
rconnorlawson 0:35660d7952f7 321 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
rconnorlawson 0:35660d7952f7 322 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
rconnorlawson 0:35660d7952f7 323 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
rconnorlawson 0:35660d7952f7 324 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
rconnorlawson 0:35660d7952f7 325 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
rconnorlawson 0:35660d7952f7 326 #else /* Use byte-by-byte access to the FAT structure */
rconnorlawson 0:35660d7952f7 327 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
rconnorlawson 0:35660d7952f7 328 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
rconnorlawson 0:35660d7952f7 329 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
rconnorlawson 0:35660d7952f7 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)
rconnorlawson 0:35660d7952f7 331 #endif
rconnorlawson 0:35660d7952f7 332
rconnorlawson 0:35660d7952f7 333 #ifdef __cplusplus
rconnorlawson 0:35660d7952f7 334 }
rconnorlawson 0:35660d7952f7 335 #endif
rconnorlawson 0:35660d7952f7 336
rconnorlawson 0:35660d7952f7 337 #endif /* _FATFS */