1fe4406f37
b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk' 7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5 git-subtree-dir: tmk_core git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552
338 lines
13 KiB
C
338 lines
13 KiB
C
/*---------------------------------------------------------------------------/
|
|
/ FatFs - FAT file system module include file R0.09a (C)ChaN, 2012
|
|
/----------------------------------------------------------------------------/
|
|
/ FatFs module is a generic FAT file system module for small embedded systems.
|
|
/ This is a free software that opened for education, research and commercial
|
|
/ developments under license policy of following terms.
|
|
/
|
|
/ Copyright (C) 2012, ChaN, all right reserved.
|
|
/
|
|
/ * The FatFs module is a free software and there is NO WARRANTY.
|
|
/ * No restriction on use. You can use, modify and redistribute it for
|
|
/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
|
|
/ * Redistributions of source code must retain the above copyright notice.
|
|
/
|
|
/----------------------------------------------------------------------------*/
|
|
|
|
#ifndef _FATFS
|
|
#define _FATFS 4004 /* Revision ID */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include "integer.h" /* Basic integer types */
|
|
#include "ffconf.h" /* FatFs configuration options */
|
|
|
|
#if _FATFS != _FFCONF
|
|
#error Wrong configuration file (ffconf.h).
|
|
#endif
|
|
|
|
|
|
|
|
/* Definitions of volume management */
|
|
|
|
#if _MULTI_PARTITION /* Multiple partition configuration */
|
|
typedef struct {
|
|
BYTE pd; /* Physical drive number */
|
|
BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
|
|
} PARTITION;
|
|
extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
|
|
#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
|
|
#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
|
|
|
|
#else /* Single partition configuration */
|
|
#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
|
|
#define LD2PT(vol) 0 /* Always mounts the 1st partition or in SFD */
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Type of path name strings on FatFs API */
|
|
|
|
#if _LFN_UNICODE /* Unicode string */
|
|
#if !_USE_LFN
|
|
#error _LFN_UNICODE must be 0 in non-LFN cfg.
|
|
#endif
|
|
#ifndef _INC_TCHAR
|
|
typedef WCHAR TCHAR;
|
|
#define _T(x) L ## x
|
|
#define _TEXT(x) L ## x
|
|
#endif
|
|
|
|
#else /* ANSI/OEM string */
|
|
#ifndef _INC_TCHAR
|
|
typedef char TCHAR;
|
|
#define _T(x) x
|
|
#define _TEXT(x) x
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* File system object structure (FATFS) */
|
|
|
|
typedef struct {
|
|
BYTE fs_type; /* FAT sub-type (0:Not mounted) */
|
|
BYTE drv; /* Physical drive number */
|
|
BYTE csize; /* Sectors per cluster (1,2,4...128) */
|
|
BYTE n_fats; /* Number of FAT copies (1,2) */
|
|
BYTE wflag; /* win[] dirty flag (1:must be written back) */
|
|
BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
|
|
WORD id; /* File system mount ID */
|
|
WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
|
|
#if _MAX_SS != 512
|
|
WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */
|
|
#endif
|
|
#if _FS_REENTRANT
|
|
_SYNC_t sobj; /* Identifier of sync object */
|
|
#endif
|
|
#if !_FS_READONLY
|
|
DWORD last_clust; /* Last allocated cluster */
|
|
DWORD free_clust; /* Number of free clusters */
|
|
DWORD fsi_sector; /* fsinfo sector (FAT32) */
|
|
#endif
|
|
#if _FS_RPATH
|
|
DWORD cdir; /* Current directory start cluster (0:root) */
|
|
#endif
|
|
DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
|
|
DWORD fsize; /* Sectors per FAT */
|
|
DWORD fatbase; /* FAT start sector */
|
|
DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
|
|
DWORD database; /* Data start sector */
|
|
DWORD winsect; /* Current sector appearing in the win[] */
|
|
BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
|
|
} FATFS;
|
|
|
|
|
|
|
|
/* File object structure (FIL) */
|
|
|
|
typedef struct {
|
|
FATFS* fs; /* Pointer to the related file system object */
|
|
WORD id; /* File system mount ID of the related file system object */
|
|
BYTE flag; /* File status flags */
|
|
BYTE pad1;
|
|
DWORD fptr; /* File read/write pointer (0ed on file open) */
|
|
DWORD fsize; /* File size */
|
|
DWORD sclust; /* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
|
|
DWORD clust; /* Current cluster of fpter */
|
|
DWORD dsect; /* Current data sector of fpter */
|
|
#if !_FS_READONLY
|
|
DWORD dir_sect; /* Sector containing the directory entry */
|
|
BYTE* dir_ptr; /* Pointer to the directory entry in the window */
|
|
#endif
|
|
#if _USE_FASTSEEK
|
|
DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
|
|
#endif
|
|
#if _FS_LOCK
|
|
UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
|
|
#endif
|
|
#if !_FS_TINY
|
|
BYTE buf[_MAX_SS]; /* File data read/write buffer */
|
|
#endif
|
|
} FIL;
|
|
|
|
|
|
|
|
/* Directory object structure (DIR) */
|
|
|
|
typedef struct {
|
|
FATFS* fs; /* Pointer to the owner file system object */
|
|
WORD id; /* Owner file system mount ID */
|
|
WORD index; /* Current read/write index number */
|
|
DWORD sclust; /* Table start cluster (0:Root dir) */
|
|
DWORD clust; /* Current cluster */
|
|
DWORD sect; /* Current sector */
|
|
BYTE* dir; /* Pointer to the current SFN entry in the win[] */
|
|
BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
|
|
#if _USE_LFN
|
|
WCHAR* lfn; /* Pointer to the LFN working buffer */
|
|
WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
|
|
#endif
|
|
} FATFS_DIR;
|
|
|
|
|
|
|
|
/* File status structure (FILINFO) */
|
|
|
|
typedef struct {
|
|
DWORD fsize; /* File size */
|
|
WORD fdate; /* Last modified date */
|
|
WORD ftime; /* Last modified time */
|
|
BYTE fattrib; /* Attribute */
|
|
TCHAR fname[13]; /* Short file name (8.3 format) */
|
|
#if _USE_LFN
|
|
TCHAR* lfname; /* Pointer to the LFN buffer */
|
|
UINT lfsize; /* Size of LFN buffer in TCHAR */
|
|
#endif
|
|
} FILINFO;
|
|
|
|
|
|
|
|
/* File function return code (FRESULT) */
|
|
|
|
typedef enum {
|
|
FR_OK = 0, /* (0) Succeeded */
|
|
FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
|
|
FR_INT_ERR, /* (2) Assertion failed */
|
|
FR_NOT_READY, /* (3) The physical drive cannot work */
|
|
FR_NO_FILE, /* (4) Could not find the file */
|
|
FR_NO_PATH, /* (5) Could not find the path */
|
|
FR_INVALID_NAME, /* (6) The path name format is invalid */
|
|
FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
|
|
FR_EXIST, /* (8) Access denied due to prohibited access */
|
|
FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
|
|
FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
|
|
FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
|
|
FR_NOT_ENABLED, /* (12) The volume has no work area */
|
|
FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
|
|
FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
|
|
FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
|
|
FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
|
|
FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
|
|
FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
|
|
FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
|
|
} FRESULT;
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------*/
|
|
/* FatFs module application interface */
|
|
|
|
FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
|
|
FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
|
|
FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
|
|
FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
|
|
FRESULT f_close (FIL*); /* Close an open file object */
|
|
FRESULT f_opendir (FATFS_DIR*, const TCHAR*); /* Open an existing directory */
|
|
FRESULT f_readdir (FATFS_DIR*, FILINFO*); /* Read a directory item */
|
|
FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
|
|
FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
|
|
FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
|
|
FRESULT f_truncate (FIL*); /* Truncate file */
|
|
FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
|
|
FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
|
|
FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
|
|
FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attribute of the file/dir */
|
|
FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change times-tamp of the file/dir */
|
|
FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
|
|
FRESULT f_chdrive (BYTE); /* Change current drive */
|
|
FRESULT f_chdir (const TCHAR*); /* Change current directory */
|
|
FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
|
|
FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
|
|
FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
|
|
FRESULT f_fdisk (BYTE, const DWORD[], void*); /* Divide a physical drive into some partitions */
|
|
int f_putc (TCHAR, FIL*); /* Put a character to the file */
|
|
int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
|
|
int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
|
|
TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
|
|
|
|
#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
|
|
#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
|
|
#define f_tell(fp) ((fp)->fptr)
|
|
#define f_size(fp) ((fp)->fsize)
|
|
|
|
#ifndef EOF
|
|
#define EOF (-1)
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------*/
|
|
/* Additional user defined functions */
|
|
|
|
/* RTC function */
|
|
#if !_FS_READONLY
|
|
DWORD get_fattime (void);
|
|
#endif
|
|
|
|
/* Unicode support functions */
|
|
#if _USE_LFN /* Unicode - OEM code conversion */
|
|
WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
|
|
WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
|
|
#if _USE_LFN == 3 /* Memory functions */
|
|
void* ff_memalloc (UINT); /* Allocate memory block */
|
|
void ff_memfree (void*); /* Free memory block */
|
|
#endif
|
|
#endif
|
|
|
|
/* Sync functions */
|
|
#if _FS_REENTRANT
|
|
int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
|
|
int ff_req_grant (_SYNC_t); /* Lock sync object */
|
|
void ff_rel_grant (_SYNC_t); /* Unlock sync object */
|
|
int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/*--------------------------------------------------------------*/
|
|
/* Flags and offset address */
|
|
|
|
|
|
/* File access control and file status flags (FIL.flag) */
|
|
|
|
#define FA_READ 0x01
|
|
#define FA_OPEN_EXISTING 0x00
|
|
#define FA__ERROR 0x80
|
|
|
|
#if !_FS_READONLY
|
|
#define FA_WRITE 0x02
|
|
#define FA_CREATE_NEW 0x04
|
|
#define FA_CREATE_ALWAYS 0x08
|
|
#define FA_OPEN_ALWAYS 0x10
|
|
#define FA__WRITTEN 0x20
|
|
#define FA__DIRTY 0x40
|
|
#endif
|
|
|
|
|
|
/* FAT sub type (FATFS.fs_type) */
|
|
|
|
#define FS_FAT12 1
|
|
#define FS_FAT16 2
|
|
#define FS_FAT32 3
|
|
|
|
|
|
/* File attribute bits for directory entry */
|
|
|
|
#define AM_RDO 0x01 /* Read only */
|
|
#define AM_HID 0x02 /* Hidden */
|
|
#define AM_SYS 0x04 /* System */
|
|
#define AM_VOL 0x08 /* Volume label */
|
|
#define AM_LFN 0x0F /* LFN entry */
|
|
#define AM_DIR 0x10 /* Directory */
|
|
#define AM_ARC 0x20 /* Archive */
|
|
#define AM_MASK 0x3F /* Mask of defined bits */
|
|
|
|
|
|
/* Fast seek feature */
|
|
#define CREATE_LINKMAP 0xFFFFFFFF
|
|
|
|
|
|
|
|
/*--------------------------------*/
|
|
/* Multi-byte word access macros */
|
|
|
|
#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
|
|
#define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
|
|
#define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
|
|
#define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
|
|
#define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
|
|
#else /* Use byte-by-byte access to the FAT structure */
|
|
#define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
|
|
#define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
|
|
#define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
|
|
#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)
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _FATFS */
|