Samuel Mokrani / Mbed 2 deprecated USBMSD_SD_HelloWorld_Mbed

USBMSD SD card Hello World for Mbed platforms

Dependencies:   mbed USBMSD_SD USBDevice

ChaNFS/CHAN_FS/ff.h@7:6494da2a5c60, 2011-11-14 (annotated)

Committer:
samux
Date:
Mon Nov 14 12:08:32 2011 +0000
Revision:
7:6494da2a5c60
will try to use ChaNFSSD

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 7:6494da2a5c60 1 /*---------------------------------------------------------------------------/
samux 7:6494da2a5c60 2 / FatFs - FAT file system module include file R0.08b (C)ChaN, 2011
samux 7:6494da2a5c60 3 /----------------------------------------------------------------------------/
samux 7:6494da2a5c60 4 / FatFs module is a generic FAT file system module for small embedded systems.
samux 7:6494da2a5c60 5 / This is a free software that opened for education, research and commercial
samux 7:6494da2a5c60 6 / developments under license policy of following trems.
samux 7:6494da2a5c60 7 /
samux 7:6494da2a5c60 8 / Copyright (C) 2011, ChaN, all right reserved.
samux 7:6494da2a5c60 9 /
samux 7:6494da2a5c60 10 / * The FatFs module is a free software and there is NO WARRANTY.
samux 7:6494da2a5c60 11 / * No restriction on use. You can use, modify and redistribute it for
samux 7:6494da2a5c60 12 / personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
samux 7:6494da2a5c60 13 / * Redistributions of source code must retain the above copyright notice.
samux 7:6494da2a5c60 14 /
samux 7:6494da2a5c60 15 /----------------------------------------------------------------------------*/
samux 7:6494da2a5c60 16
samux 7:6494da2a5c60 17 #ifndef _FATFS
samux 7:6494da2a5c60 18 #define _FATFS 8237 /* Revision ID */
samux 7:6494da2a5c60 19
samux 7:6494da2a5c60 20 #ifdef __cplusplus
samux 7:6494da2a5c60 21 extern "C" {
samux 7:6494da2a5c60 22 #endif
samux 7:6494da2a5c60 23
samux 7:6494da2a5c60 24 #include "integer.h" /* Basic integer types */
samux 7:6494da2a5c60 25 #include "ffconf.h" /* FatFs configuration options */
samux 7:6494da2a5c60 26
samux 7:6494da2a5c60 27 #if _FATFS != _FFCONF
samux 7:6494da2a5c60 28 #error Wrong configuration file (ffconf.h).
samux 7:6494da2a5c60 29 #endif
samux 7:6494da2a5c60 30
samux 7:6494da2a5c60 31
samux 7:6494da2a5c60 32
samux 7:6494da2a5c60 33 #define _DRIVES 4
samux 7:6494da2a5c60 34 /* Number of logical drives to be used. This affects the size of internal table. */
samux 7:6494da2a5c60 35 /* Definitions of volume management */
samux 7:6494da2a5c60 36
samux 7:6494da2a5c60 37 #if _MULTI_PARTITION /* Multiple partition configuration */
samux 7:6494da2a5c60 38 #define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive# */
samux 7:6494da2a5c60 39 #define LD2PT(vol) (VolToPart[vol].pt) /* Get partition# */
samux 7:6494da2a5c60 40 typedef struct {
samux 7:6494da2a5c60 41 BYTE pd; /* Physical drive# */
samux 7:6494da2a5c60 42 BYTE pt; /* Partition # (0-3) */
samux 7:6494da2a5c60 43 } PARTITION;
samux 7:6494da2a5c60 44 extern const PARTITION VolToPart[]; /* Volume - Physical location resolution table */
samux 7:6494da2a5c60 45
samux 7:6494da2a5c60 46 #else /* Single partition configuration */
samux 7:6494da2a5c60 47 #define LD2PD(vol) (vol) /* Logical drive# is bound to the same physical drive# */
samux 7:6494da2a5c60 48 #define LD2PT(vol) 0 /* Always mounts the 1st partition */
samux 7:6494da2a5c60 49
samux 7:6494da2a5c60 50 #endif
samux 7:6494da2a5c60 51
samux 7:6494da2a5c60 52
samux 7:6494da2a5c60 53
samux 7:6494da2a5c60 54 /* Type of path name strings on FatFs API */
samux 7:6494da2a5c60 55
samux 7:6494da2a5c60 56 #if _LFN_UNICODE /* Unicode string */
samux 7:6494da2a5c60 57 #if !_USE_LFN
samux 7:6494da2a5c60 58 #error _LFN_UNICODE must be 0 in non-LFN cfg.
samux 7:6494da2a5c60 59 #endif
samux 7:6494da2a5c60 60 #ifndef _INC_TCHAR
samux 7:6494da2a5c60 61 typedef WCHAR TCHAR;
samux 7:6494da2a5c60 62 #define _T(x) L ## x
samux 7:6494da2a5c60 63 #define _TEXT(x) L ## x
samux 7:6494da2a5c60 64 #endif
samux 7:6494da2a5c60 65
samux 7:6494da2a5c60 66 #else /* ANSI/OEM string */
samux 7:6494da2a5c60 67 #ifndef _INC_TCHAR
samux 7:6494da2a5c60 68 typedef char TCHAR;
samux 7:6494da2a5c60 69 #define _T(x) x
samux 7:6494da2a5c60 70 #define _TEXT(x) x
samux 7:6494da2a5c60 71 #endif
samux 7:6494da2a5c60 72
samux 7:6494da2a5c60 73 #endif
samux 7:6494da2a5c60 74
samux 7:6494da2a5c60 75
samux 7:6494da2a5c60 76
samux 7:6494da2a5c60 77 /* File system object structure (FATFS) */
samux 7:6494da2a5c60 78
samux 7:6494da2a5c60 79 typedef struct {
samux 7:6494da2a5c60 80 BYTE fs_type; /* FAT sub-type (0:Not mounted) */
samux 7:6494da2a5c60 81 BYTE drv; /* Physical drive number */
samux 7:6494da2a5c60 82 BYTE csize; /* Sectors per cluster (1,2,4...128) */
samux 7:6494da2a5c60 83 BYTE n_fats; /* Number of FAT copies (1,2) */
samux 7:6494da2a5c60 84 BYTE wflag; /* win[] dirty flag (1:must be written back) */
samux 7:6494da2a5c60 85 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
samux 7:6494da2a5c60 86 WORD id; /* File system mount ID */
samux 7:6494da2a5c60 87 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
samux 7:6494da2a5c60 88 #if _MAX_SS != 512
samux 7:6494da2a5c60 89 WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
samux 7:6494da2a5c60 90 #endif
samux 7:6494da2a5c60 91 #if _FS_REENTRANT
samux 7:6494da2a5c60 92 _SYNC_t sobj; /* Identifier of sync object */
samux 7:6494da2a5c60 93 #endif
samux 7:6494da2a5c60 94 #if !_FS_READONLY
samux 7:6494da2a5c60 95 DWORD last_clust; /* Last allocated cluster */
samux 7:6494da2a5c60 96 DWORD free_clust; /* Number of free clusters */
samux 7:6494da2a5c60 97 DWORD fsi_sector; /* fsinfo sector (FAT32) */
samux 7:6494da2a5c60 98 #endif
samux 7:6494da2a5c60 99 #if _FS_RPATH
samux 7:6494da2a5c60 100 DWORD cdir; /* Current directory start cluster (0:root) */
samux 7:6494da2a5c60 101 #endif
samux 7:6494da2a5c60 102 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
samux 7:6494da2a5c60 103 DWORD fsize; /* Sectors per FAT */
samux 7:6494da2a5c60 104 DWORD fatbase; /* FAT start sector */
samux 7:6494da2a5c60 105 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
samux 7:6494da2a5c60 106 DWORD database; /* Data start sector */
samux 7:6494da2a5c60 107 DWORD winsect; /* Current sector appearing in the win[] */
samux 7:6494da2a5c60 108 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
samux 7:6494da2a5c60 109 } FATFS;
samux 7:6494da2a5c60 110
samux 7:6494da2a5c60 111
samux 7:6494da2a5c60 112
samux 7:6494da2a5c60 113 /* File object structure (FIL) */
samux 7:6494da2a5c60 114
samux 7:6494da2a5c60 115 typedef struct {
samux 7:6494da2a5c60 116 FATFS* fs; /* Pointer to the owner file system object */
samux 7:6494da2a5c60 117 WORD id; /* Owner file system mount ID */
samux 7:6494da2a5c60 118 BYTE flag; /* File status flags */
samux 7:6494da2a5c60 119 BYTE pad1;
samux 7:6494da2a5c60 120 DWORD fptr; /* File read/write pointer (0 on file open) */
samux 7:6494da2a5c60 121 DWORD fsize; /* File size */
samux 7:6494da2a5c60 122 DWORD sclust; /* File start cluster (0 when fsize==0) */
samux 7:6494da2a5c60 123 DWORD clust; /* Current cluster */
samux 7:6494da2a5c60 124 DWORD dsect; /* Current data sector */
samux 7:6494da2a5c60 125 #if !_FS_READONLY
samux 7:6494da2a5c60 126 DWORD dir_sect; /* Sector containing the directory entry */
samux 7:6494da2a5c60 127 BYTE* dir_ptr; /* Ponter to the directory entry in the window */
samux 7:6494da2a5c60 128 #endif
samux 7:6494da2a5c60 129 #if _USE_FASTSEEK
samux 7:6494da2a5c60 130 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
samux 7:6494da2a5c60 131 #endif
samux 7:6494da2a5c60 132 #if _FS_SHARE
samux 7:6494da2a5c60 133 UINT lockid; /* File lock ID (index of file semaphore table) */
samux 7:6494da2a5c60 134 #endif
samux 7:6494da2a5c60 135 #if !_FS_TINY
samux 7:6494da2a5c60 136 BYTE buf[_MAX_SS]; /* File data read/write buffer */
samux 7:6494da2a5c60 137 #endif
samux 7:6494da2a5c60 138 } FIL_t;
samux 7:6494da2a5c60 139
samux 7:6494da2a5c60 140
samux 7:6494da2a5c60 141
samux 7:6494da2a5c60 142 /* Directory object structure (DIR) */
samux 7:6494da2a5c60 143
samux 7:6494da2a5c60 144 typedef struct {
samux 7:6494da2a5c60 145 FATFS* fs; /* Pointer to the owner file system object */
samux 7:6494da2a5c60 146 WORD id; /* Owner file system mount ID */
samux 7:6494da2a5c60 147 WORD index; /* Current read/write index number */
samux 7:6494da2a5c60 148 DWORD sclust; /* Table start cluster (0:Root dir) */
samux 7:6494da2a5c60 149 DWORD clust; /* Current cluster */
samux 7:6494da2a5c60 150 DWORD sect; /* Current sector */
samux 7:6494da2a5c60 151 BYTE* dir; /* Pointer to the current SFN entry in the win[] */
samux 7:6494da2a5c60 152 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
samux 7:6494da2a5c60 153 #if _USE_LFN
samux 7:6494da2a5c60 154 WCHAR* lfn; /* Pointer to the LFN working buffer */
samux 7:6494da2a5c60 155 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
samux 7:6494da2a5c60 156 #endif
samux 7:6494da2a5c60 157 } DIR_t;
samux 7:6494da2a5c60 158
samux 7:6494da2a5c60 159
samux 7:6494da2a5c60 160
samux 7:6494da2a5c60 161 /* File status structure (FILINFO) */
samux 7:6494da2a5c60 162
samux 7:6494da2a5c60 163 typedef struct {
samux 7:6494da2a5c60 164 DWORD fsize; /* File size */
samux 7:6494da2a5c60 165 WORD fdate; /* Last modified date */
samux 7:6494da2a5c60 166 WORD ftime; /* Last modified time */
samux 7:6494da2a5c60 167 BYTE fattrib; /* Attribute */
samux 7:6494da2a5c60 168 TCHAR fname[13]; /* Short file name (8.3 format) */
samux 7:6494da2a5c60 169 #if _USE_LFN
samux 7:6494da2a5c60 170 TCHAR* lfname; /* Pointer to the LFN buffer */
samux 7:6494da2a5c60 171 UINT lfsize; /* Size of LFN buffer in TCHAR */
samux 7:6494da2a5c60 172 #endif
samux 7:6494da2a5c60 173 } FILINFO;
samux 7:6494da2a5c60 174
samux 7:6494da2a5c60 175
samux 7:6494da2a5c60 176
samux 7:6494da2a5c60 177 /* File function return code (FRESULT) */
samux 7:6494da2a5c60 178
samux 7:6494da2a5c60 179 typedef enum {
samux 7:6494da2a5c60 180 FR_OK = 0, /* (0) Succeeded */
samux 7:6494da2a5c60 181 FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
samux 7:6494da2a5c60 182 FR_INT_ERR, /* (2) Assertion failed */
samux 7:6494da2a5c60 183 FR_NOT_READY, /* (3) The physical drive cannot work */
samux 7:6494da2a5c60 184 FR_NO_FILE, /* (4) Could not find the file */
samux 7:6494da2a5c60 185 FR_NO_PATH, /* (5) Could not find the path */
samux 7:6494da2a5c60 186 FR_INVALID_NAME, /* (6) The path name format is invalid */
samux 7:6494da2a5c60 187 FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
samux 7:6494da2a5c60 188 FR_EXIST, /* (8) Acces denied due to prohibited access */
samux 7:6494da2a5c60 189 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
samux 7:6494da2a5c60 190 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
samux 7:6494da2a5c60 191 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
samux 7:6494da2a5c60 192 FR_NOT_ENABLED, /* (12) The volume has no work area */
samux 7:6494da2a5c60 193 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
samux 7:6494da2a5c60 194 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
samux 7:6494da2a5c60 195 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
samux 7:6494da2a5c60 196 FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
samux 7:6494da2a5c60 197 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
samux 7:6494da2a5c60 198 FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
samux 7:6494da2a5c60 199 } FRESULT;
samux 7:6494da2a5c60 200
samux 7:6494da2a5c60 201
samux 7:6494da2a5c60 202
samux 7:6494da2a5c60 203 /*--------------------------------------------------------------*/
samux 7:6494da2a5c60 204 /* FatFs module application interface */
samux 7:6494da2a5c60 205
samux 7:6494da2a5c60 206 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
samux 7:6494da2a5c60 207 FRESULT f_open (FIL_t*, const TCHAR*, BYTE); /* Open or create a file */
samux 7:6494da2a5c60 208 FRESULT f_read (FIL_t*, void*, UINT, UINT*); /* Read data from a file */
samux 7:6494da2a5c60 209 FRESULT f_lseek (FIL_t*, DWORD); /* Move file pointer of a file object */
samux 7:6494da2a5c60 210 FRESULT f_close (FIL_t*); /* Close an open file object */
samux 7:6494da2a5c60 211 FRESULT f_opendir (DIR_t*, const TCHAR*); /* Open an existing directory */
samux 7:6494da2a5c60 212 FRESULT f_readdir (DIR_t*, FILINFO*); /* Read a directory item */
samux 7:6494da2a5c60 213 FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
samux 7:6494da2a5c60 214 FRESULT f_write (FIL_t*, const void*, UINT, UINT*); /* Write data to a file */
samux 7:6494da2a5c60 215 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
samux 7:6494da2a5c60 216 FRESULT f_truncate (FIL_t*); /* Truncate file */
samux 7:6494da2a5c60 217 FRESULT f_sync (FIL_t*); /* Flush cached data of a writing file */
samux 7:6494da2a5c60 218 FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
samux 7:6494da2a5c60 219 FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
samux 7:6494da2a5c60 220 FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
samux 7:6494da2a5c60 221 FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
samux 7:6494da2a5c60 222 FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
samux 7:6494da2a5c60 223 FRESULT f_forward (FIL_t*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
samux 7:6494da2a5c60 224 FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
samux 7:6494da2a5c60 225 FRESULT f_chdrive (BYTE); /* Change current drive */
samux 7:6494da2a5c60 226 FRESULT f_chdir (const TCHAR*); /* Change current directory */
samux 7:6494da2a5c60 227 FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
samux 7:6494da2a5c60 228 int f_putc (TCHAR, FIL_t*); /* Put a character to the file */
samux 7:6494da2a5c60 229 int f_puts (const TCHAR*, FIL_t*); /* Put a string to the file */
samux 7:6494da2a5c60 230 int f_printf (FIL_t*, const TCHAR*, ...); /* Put a formatted string to the file */
samux 7:6494da2a5c60 231 TCHAR* f_gets (TCHAR*, int, FIL_t*); /* Get a string from the file */
samux 7:6494da2a5c60 232
samux 7:6494da2a5c60 233 #ifndef EOF
samux 7:6494da2a5c60 234 #define EOF (-1)
samux 7:6494da2a5c60 235 #endif
samux 7:6494da2a5c60 236
samux 7:6494da2a5c60 237 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
samux 7:6494da2a5c60 238 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
samux 7:6494da2a5c60 239 #define f_tell(fp) ((fp)->fptr)
samux 7:6494da2a5c60 240 #define f_size(fp) ((fp)->fsize)
samux 7:6494da2a5c60 241
samux 7:6494da2a5c60 242
samux 7:6494da2a5c60 243
samux 7:6494da2a5c60 244
samux 7:6494da2a5c60 245 /*--------------------------------------------------------------*/
samux 7:6494da2a5c60 246 /* Additional user defined functions */
samux 7:6494da2a5c60 247
samux 7:6494da2a5c60 248 /* RTC function */
samux 7:6494da2a5c60 249 #if !_FS_READONLY
samux 7:6494da2a5c60 250 DWORD get_fattime (void);
samux 7:6494da2a5c60 251 #endif
samux 7:6494da2a5c60 252
samux 7:6494da2a5c60 253 /* Unicode support functions */
samux 7:6494da2a5c60 254 #if _USE_LFN /* Unicode - OEM code conversion */
samux 7:6494da2a5c60 255 WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
samux 7:6494da2a5c60 256 WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
samux 7:6494da2a5c60 257 #if _USE_LFN == 3 /* Memory functions */
samux 7:6494da2a5c60 258 void* ff_memalloc (UINT); /* Allocate memory block */
samux 7:6494da2a5c60 259 void ff_memfree (void*); /* Free memory block */
samux 7:6494da2a5c60 260 #endif
samux 7:6494da2a5c60 261 #endif
samux 7:6494da2a5c60 262
samux 7:6494da2a5c60 263 /* Sync functions */
samux 7:6494da2a5c60 264 #if _FS_REENTRANT
samux 7:6494da2a5c60 265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
samux 7:6494da2a5c60 266 int ff_req_grant (_SYNC_t); /* Lock sync object */
samux 7:6494da2a5c60 267 void ff_rel_grant (_SYNC_t); /* Unlock sync object */
samux 7:6494da2a5c60 268 int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
samux 7:6494da2a5c60 269 #endif
samux 7:6494da2a5c60 270
samux 7:6494da2a5c60 271
samux 7:6494da2a5c60 272
samux 7:6494da2a5c60 273
samux 7:6494da2a5c60 274 /*--------------------------------------------------------------*/
samux 7:6494da2a5c60 275 /* Flags and offset address */
samux 7:6494da2a5c60 276
samux 7:6494da2a5c60 277
samux 7:6494da2a5c60 278 /* File access control and file status flags (FIL.flag) */
samux 7:6494da2a5c60 279
samux 7:6494da2a5c60 280 #define FA_READ 0x01
samux 7:6494da2a5c60 281 #define FA_OPEN_EXISTING 0x00
samux 7:6494da2a5c60 282 #define FA__ERROR 0x80
samux 7:6494da2a5c60 283
samux 7:6494da2a5c60 284 #if !_FS_READONLY
samux 7:6494da2a5c60 285 #define FA_WRITE 0x02
samux 7:6494da2a5c60 286 #define FA_CREATE_NEW 0x04
samux 7:6494da2a5c60 287 #define FA_CREATE_ALWAYS 0x08
samux 7:6494da2a5c60 288 #define FA_OPEN_ALWAYS 0x10
samux 7:6494da2a5c60 289 #define FA__WRITTEN 0x20
samux 7:6494da2a5c60 290 #define FA__DIRTY 0x40
samux 7:6494da2a5c60 291 #endif
samux 7:6494da2a5c60 292
samux 7:6494da2a5c60 293
samux 7:6494da2a5c60 294 /* FAT sub type (FATFS.fs_type) */
samux 7:6494da2a5c60 295
samux 7:6494da2a5c60 296 #define FS_FAT12 1
samux 7:6494da2a5c60 297 #define FS_FAT16 2
samux 7:6494da2a5c60 298 #define FS_FAT32 3
samux 7:6494da2a5c60 299
samux 7:6494da2a5c60 300
samux 7:6494da2a5c60 301 /* File attribute bits for directory entry */
samux 7:6494da2a5c60 302
samux 7:6494da2a5c60 303 #define AM_RDO 0x01 /* Read only */
samux 7:6494da2a5c60 304 #define AM_HID 0x02 /* Hidden */
samux 7:6494da2a5c60 305 #define AM_SYS 0x04 /* System */
samux 7:6494da2a5c60 306 #define AM_VOL 0x08 /* Volume label */
samux 7:6494da2a5c60 307 #define AM_LFN 0x0F /* LFN entry */
samux 7:6494da2a5c60 308 #define AM_DIR 0x10 /* Directory */
samux 7:6494da2a5c60 309 #define AM_ARC 0x20 /* Archive */
samux 7:6494da2a5c60 310 #define AM_MASK 0x3F /* Mask of defined bits */
samux 7:6494da2a5c60 311
samux 7:6494da2a5c60 312
samux 7:6494da2a5c60 313 /* Fast seek function */
samux 7:6494da2a5c60 314 #define CREATE_LINKMAP 0xFFFFFFFF
samux 7:6494da2a5c60 315
samux 7:6494da2a5c60 316
samux 7:6494da2a5c60 317
samux 7:6494da2a5c60 318 /*--------------------------------*/
samux 7:6494da2a5c60 319 /* Multi-byte word access macros */
samux 7:6494da2a5c60 320
samux 7:6494da2a5c60 321 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
samux 7:6494da2a5c60 322 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
samux 7:6494da2a5c60 323 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
samux 7:6494da2a5c60 324 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
samux 7:6494da2a5c60 325 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
samux 7:6494da2a5c60 326 #else /* Use byte-by-byte access to the FAT structure */
samux 7:6494da2a5c60 327 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
samux 7:6494da2a5c60 328 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
samux 7:6494da2a5c60 329 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
samux 7:6494da2a5c60 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)
samux 7:6494da2a5c60 331 #endif
samux 7:6494da2a5c60 332
samux 7:6494da2a5c60 333 #ifdef __cplusplus
samux 7:6494da2a5c60 334 }
samux 7:6494da2a5c60 335 #endif
samux 7:6494da2a5c60 336
samux 7:6494da2a5c60 337 #endif /* _FATFS */