338 lines
12 KiB
C
338 lines
12 KiB
C
/*---------------------------------------------------------------------------/
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/ FatFs - FAT file system module include file R0.08b (C)ChaN, 2011
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/----------------------------------------------------------------------------/
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/ FatFs module is a generic FAT file system module for small embedded systems.
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/ This is a free software that opened for education, research and commercial
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/ developments under license policy of following trems.
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/
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/ Copyright (C) 2011, ChaN, all right reserved.
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/
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/ * The FatFs module is a free software and there is NO WARRANTY.
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/ * No restriction on use. You can use, modify and redistribute it for
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/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
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/ * Redistributions of source code must retain the above copyright notice.
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/
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/----------------------------------------------------------------------------*/
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#ifndef _FATFS
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#define _FATFS 8237 /* Revision ID */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <rtthread.h>
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#include "integer.h" /* Basic integer types */
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#include "ffconf.h" /* FatFs configuration options */
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#if _FATFS != _FFCONF
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#error Wrong configuration file (ffconf.h).
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#endif
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/* Definitions of volume management */
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#if _MULTI_PARTITION /* Multiple partition configuration */
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#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive# */
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#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition# */
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typedef struct {
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BYTE pd; /* Physical drive# */
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BYTE pt; /* Partition # (0-3) */
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} PARTITION;
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extern const PARTITION VolToPart[]; /* Volume - Physical location resolution table */
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#else /* Single partition configuration */
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#define LD2PD(vol) (vol) /* Logical drive# is bound to the same physical drive# */
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#define LD2PT(vol) 0 /* Always mounts the 1st partition */
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#endif
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/* Type of path name strings on FatFs API */
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#if _LFN_UNICODE /* Unicode string */
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#if !_USE_LFN
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#error _LFN_UNICODE must be 0 in non-LFN cfg.
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#endif
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#ifndef _INC_TCHAR
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typedef WCHAR TCHAR;
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#define _T(x) L ## x
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#define _TEXT(x) L ## x
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#endif
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#else /* ANSI/OEM string */
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#ifndef _INC_TCHAR
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typedef char TCHAR;
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#define _T(x) x
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#define _TEXT(x) x
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#endif
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#endif
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/* File system object structure (FATFS) */
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typedef struct {
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BYTE fs_type; /* FAT sub-type (0:Not mounted) */
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BYTE drv; /* Physical drive number */
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BYTE csize; /* Sectors per cluster (1,2,4...128) */
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BYTE n_fats; /* Number of FAT copies (1,2) */
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BYTE wflag; /* win[] dirty flag (1:must be written back) */
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BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
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WORD id; /* File system mount ID */
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WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
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#if _MAX_SS != 512
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WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
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#endif
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#if _FS_REENTRANT
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_SYNC_t sobj; /* Identifier of sync object */
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#endif
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#if !_FS_READONLY
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DWORD last_clust; /* Last allocated cluster */
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DWORD free_clust; /* Number of free clusters */
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DWORD fsi_sector; /* fsinfo sector (FAT32) */
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#endif
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#if _FS_RPATH
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DWORD cdir; /* Current directory start cluster (0:root) */
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#endif
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DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
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DWORD fsize; /* Sectors per FAT */
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DWORD fatbase; /* FAT start sector */
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DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
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DWORD database; /* Data start sector */
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DWORD winsect; /* Current sector appearing in the win[] */
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BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
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} FATFS;
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/* File object structure (FIL) */
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typedef struct {
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FATFS* fs; /* Pointer to the owner file system object */
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WORD id; /* Owner file system mount ID */
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BYTE flag; /* File status flags */
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BYTE pad1;
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DWORD fptr; /* File read/write pointer (0 on file open) */
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DWORD fsize; /* File size */
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DWORD sclust; /* File start cluster (0 when fsize==0) */
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DWORD clust; /* Current cluster */
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DWORD dsect; /* Current data sector */
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#if !_FS_READONLY
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DWORD dir_sect; /* Sector containing the directory entry */
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BYTE* dir_ptr; /* Ponter to the directory entry in the window */
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#endif
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#if _USE_FASTSEEK
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DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
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#endif
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#if _FS_SHARE
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UINT lockid; /* File lock ID (index of file semaphore table) */
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#endif
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#if !_FS_TINY
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BYTE buf[_MAX_SS]; /* File data read/write buffer */
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#endif
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} FIL;
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/* Directory object structure (DIR) */
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typedef struct {
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FATFS* fs; /* Pointer to the owner file system object */
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WORD id; /* Owner file system mount ID */
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WORD index; /* Current read/write index number */
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DWORD sclust; /* Table start cluster (0:Root dir) */
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DWORD clust; /* Current cluster */
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DWORD sect; /* Current sector */
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BYTE* dir; /* Pointer to the current SFN entry in the win[] */
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BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
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#if _USE_LFN
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WCHAR* lfn; /* Pointer to the LFN working buffer */
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WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
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#endif
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} DIR;
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/* File status structure (FILINFO) */
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typedef struct {
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DWORD fsize; /* File size */
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WORD fdate; /* Last modified date */
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WORD ftime; /* Last modified time */
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BYTE fattrib; /* Attribute */
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TCHAR fname[13]; /* Short file name (8.3 format) */
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#if _USE_LFN
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TCHAR* lfname; /* Pointer to the LFN buffer */
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UINT lfsize; /* Size of LFN buffer in TCHAR */
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#endif
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} FILINFO;
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/* File function return code (FRESULT) */
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typedef enum {
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FR_OK = 0, /* (0) Succeeded */
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FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */
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FR_INT_ERR, /* (2) Assertion failed */
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FR_NOT_READY, /* (3) The physical drive cannot work */
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FR_NO_FILE, /* (4) Could not find the file */
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FR_NO_PATH, /* (5) Could not find the path */
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FR_INVALID_NAME, /* (6) The path name format is invalid */
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FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */
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FR_EXIST, /* (8) Acces denied due to prohibited access */
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FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
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FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
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FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
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FR_NOT_ENABLED, /* (12) The volume has no work area */
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FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume on the physical drive */
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FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
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FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
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FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */
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FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
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FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
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} FRESULT;
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/*--------------------------------------------------------------*/
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/* FatFs module application interface */
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FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
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FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
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FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
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FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
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FRESULT f_close (FIL*); /* Close an open file object */
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FRESULT f_opendir (DIR*, const TCHAR*); /* Open an existing directory */
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FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */
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FRESULT f_seekdir(DIR *dj, int offset); /* Seek in directory */
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FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
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FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
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FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
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FRESULT f_truncate (FIL*); /* Truncate file */
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FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
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FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
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FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
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FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
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FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
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FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
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FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
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FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
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FRESULT f_chdrive (BYTE); /* Change current drive */
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FRESULT f_chdir (const TCHAR*); /* Change current directory */
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FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
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int f_putc (TCHAR, FIL*); /* Put a character to the file */
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int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
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int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
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TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
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#ifndef EOF
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#define EOF (-1)
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#endif
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#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
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#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
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#define f_tell(fp) ((fp)->fptr)
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#define f_size(fp) ((fp)->fsize)
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/*--------------------------------------------------------------*/
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/* Additional user defined functions */
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/* RTC function */
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#if !_FS_READONLY
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DWORD get_fattime (void);
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#endif
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/* Unicode support functions */
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#if _USE_LFN /* Unicode - OEM code conversion */
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WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
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WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
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#if _USE_LFN == 3 /* Memory functions */
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void* ff_memalloc (UINT); /* Allocate memory block */
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void ff_memfree (void*); /* Free memory block */
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#endif
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#endif
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/* Sync functions */
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#if _FS_REENTRANT
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int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
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int ff_req_grant (_SYNC_t); /* Lock sync object */
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void ff_rel_grant (_SYNC_t); /* Unlock sync object */
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int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
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#endif
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/*--------------------------------------------------------------*/
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/* Flags and offset address */
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/* File access control and file status flags (FIL.flag) */
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#define FA_READ 0x01
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#define FA_OPEN_EXISTING 0x00
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#define FA__ERROR 0x80
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#if !_FS_READONLY
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#define FA_WRITE 0x02
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#define FA_CREATE_NEW 0x04
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#define FA_CREATE_ALWAYS 0x08
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#define FA_OPEN_ALWAYS 0x10
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#define FA__WRITTEN 0x20
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#define FA__DIRTY 0x40
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#endif
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/* FAT sub type (FATFS.fs_type) */
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#define FS_FAT12 1
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#define FS_FAT16 2
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#define FS_FAT32 3
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/* File attribute bits for directory entry */
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#define AM_RDO 0x01 /* Read only */
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#define AM_HID 0x02 /* Hidden */
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#define AM_SYS 0x04 /* System */
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#define AM_VOL 0x08 /* Volume label */
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#define AM_LFN 0x0F /* LFN entry */
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#define AM_DIR 0x10 /* Directory */
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#define AM_ARC 0x20 /* Archive */
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#define AM_MASK 0x3F /* Mask of defined bits */
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/* Fast seek function */
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#define CREATE_LINKMAP 0xFFFFFFFF
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/*--------------------------------*/
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/* Multi-byte word access macros */
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#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
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#define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
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#define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
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#define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
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#define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
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#else /* Use byte-by-byte access to the FAT structure */
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#define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
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#define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
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#define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
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#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)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _FATFS */
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