351 lines
13 KiB
C
351 lines
13 KiB
C
/*---------------------------------------------------------------------------/
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/ FatFs - FAT file system module include R0.11 (C)ChaN, 2015
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/----------------------------------------------------------------------------/
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/ FatFs module is a free software that opened under license policy of
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/ following conditions.
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/
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/ Copyright (C) 2015, ChaN, all right reserved.
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/
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/---------------------------------------------------------------------------*/
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#ifndef _FATFS
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#define _FATFS 32020 /* Revision ID */
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#ifdef __cplusplus
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extern "C" {
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#endif
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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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typedef struct {
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BYTE pd; /* Physical drive number */
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BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
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} PARTITION;
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extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
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#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
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#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
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#else /* Single partition configuration */
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#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
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#define LD2PT(vol) 0 /* Find first valid partition or in SFD */
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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 at 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 or 2) */
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BYTE wflag; /* win[] flag (b0:dirty) */
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BYTE fsi_flag; /* FSINFO flags (b7:disabled, b0:dirty) */
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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 != _MIN_SS
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WORD ssize; /* Bytes per sector (512, 1024, 2048 or 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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#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 volbase; /* Volume start sector */
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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 file data at 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 related file system object (**do not change order**) */
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WORD id; /* Owner file system mount ID (**do not change order**) */
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BYTE flag; /* Status flags */
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BYTE err; /* Abort flag (error code) */
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DWORD fptr; /* File read/write pointer (Zeroed on file open) */
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DWORD fsize; /* File size */
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DWORD sclust; /* File start cluster (0:no cluster chain, always 0 when fsize is 0) */
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DWORD clust; /* Current cluster of fpter (not valid when fprt is 0) */
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DWORD dsect; /* Sector number appearing in buf[] (0:invalid) */
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#if !_FS_READONLY
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DWORD dir_sect; /* Sector number containing the directory entry */
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BYTE* dir_ptr; /* Pointer to the directory entry in the win[] */
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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 (Nulled on file open) */
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#endif
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#if _FS_LOCK
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UINT lockid; /* File lock ID origin from 1 (index of file semaphore table Files[]) */
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#endif
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#if !_FS_TINY
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BYTE buf[_MAX_SS]; /* File private data read/write window */
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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 (**do not change order**) */
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WORD id; /* Owner file system mount ID (**do not change order**) */
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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 _FS_LOCK
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UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
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#endif
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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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#if _USE_FIND
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const TCHAR* pat; /* Pointer to the name matching pattern */
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#endif
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} DIR;
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/* File information 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 occurred 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) Access denied due to prohibited access or directory full */
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FR_EXIST, /* (8) Access 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 */
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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 sharing 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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FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
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} FRESULT;
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/*--------------------------------------------------------------*/
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/* FatFs module application interface */
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FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode); /* Open or create a file */
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FRESULT f_close (FIL* fp); /* Close an open file object */
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FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br); /* Read data from a file */
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FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw); /* Write data to a file */
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FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
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FRESULT f_lseek (FIL* fp, DWORD ofs); /* Move file pointer of a file object */
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FRESULT f_truncate (FIL* fp); /* Truncate file */
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FRESULT f_sync (FIL* fp); /* Flush cached data of a writing file */
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FRESULT f_opendir (DIR* dp, const TCHAR* path); /* Open a directory */
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FRESULT f_closedir (DIR* dp); /* Close an open directory */
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FRESULT f_readdir (DIR* dp, FILINFO* fno); /* Read a directory item */
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FRESULT f_findfirst (DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */
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FRESULT f_findnext (DIR* dp, FILINFO* fno); /* Find next file */
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FRESULT f_mkdir (const TCHAR* path); /* Create a sub directory */
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FRESULT f_unlink (const TCHAR* path); /* Delete an existing file or directory */
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FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */
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FRESULT f_stat (const TCHAR* path, FILINFO* fno); /* Get file status */
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FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of the file/dir */
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FRESULT f_utime (const TCHAR* path, const FILINFO* fno); /* Change times-tamp of the file/dir */
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FRESULT f_chdir (const TCHAR* path); /* Change current directory */
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FRESULT f_chdrive (const TCHAR* path); /* Change current drive */
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FRESULT f_getcwd (TCHAR* buff, UINT len); /* Get current directory */
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FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */
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FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn); /* Get volume label */
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FRESULT f_setlabel (const TCHAR* label); /* Set volume label */
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FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt); /* Mount/Unmount a logical drive */
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FRESULT f_mkfs (const TCHAR* path, BYTE sfd, UINT au); /* Create a file system on the volume */
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FRESULT f_fdisk (BYTE pdrv, const DWORD szt[], void* work); /* Divide a physical drive into some partitions */
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int f_putc (TCHAR c, FIL* fp); /* Put a character to the file */
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int f_puts (const TCHAR* str, FIL* cp); /* Put a string to the file */
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int f_printf (FIL* fp, const TCHAR* str, ...); /* Put a formatted string to the file */
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TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the file */
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#define f_eof(fp) ((int)((fp)->fptr == (fp)->fsize))
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#define f_error(fp) ((fp)->err)
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#define f_tell(fp) ((fp)->fptr)
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#define f_size(fp) ((fp)->fsize)
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#define f_rewind(fp) f_lseek((fp), 0)
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#define f_rewinddir(dp) f_readdir((dp), 0)
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#ifndef EOF
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#define EOF (-1)
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#endif
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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 && !_FS_NORTC
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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 chr, UINT dir); /* OEM-Unicode bidirectional conversion */
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WCHAR ff_wtoupper (WCHAR chr); /* Unicode upper-case conversion */
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#if _USE_LFN == 3 /* Memory functions */
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void* ff_memalloc (UINT msize); /* Allocate memory block */
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void ff_memfree (void* mblock); /* 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 vol, _SYNC_t* sobj); /* Create a sync object */
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int ff_req_grant (_SYNC_t sobj); /* Lock sync object */
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void ff_rel_grant (_SYNC_t sobj); /* Unlock sync object */
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int ff_del_syncobj (_SYNC_t sobj); /* 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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#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 feature */
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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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