/*--------------------------------------------------------------------------// Tiny-FatFs - FAT file system module include file R0.04b (C)ChaN, 2007/---------------------------------------------------------------------------// FatFs module is an experimenal project to implement FAT file system to/ cheap microcontrollers. This is a free software and is opened for education,/ research and development under license policy of following trems.// Copyright (C) 2007, ChaN, all right reserved.// * The FatFs module is a free software and there is no warranty./ * You can use, modify and/or redistribute it for personal, non-profit or/ profit use without any restriction under your responsibility./ * Redistributions of source code must retain the above copyright notice.//---------------------------------------------------------------------------*/#ifndef _FATFS#define _MCU_ENDIAN 1/* The _MCU_ENDIAN defines which access method is used to the FAT structure./ 1: Enable word access./ 2: Disable word access and use byte-by-byte access instead./ When the architectural byte order of the MCU is big-endian and/or address/ miss-aligned access is prohibited, the _MCU_ENDIAN must be set to 2./ If it is not the case, it can be set to 1 for good code efficiency. */#define _FS_READONLY 0/* Setting _FS_READONLY to 1 defines read only configuration. This removes/ writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename/ and useless f_getfree. */#define _FS_MINIMIZE 2/* The _FS_MINIMIZE option defines minimization level to remove some functions./ 0: Full function./ 1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod and f_rename are removed./ 2: f_opendir and f_readdir are removed in addition to level 1./ 3: f_lseek is removed in addition to level 2. */#define _FAT32 0/* To support FAT32 in addition of FAT12/16, set _FAT32 to 1. */#define _USE_FSINFO 0/* To support FSInfo on FAT32 volume, set _USE_FSINFO to 1. */#define _USE_SJIS 0/* When _USE_SJIS is set to 1, Shift-JIS code transparency is enabled, otherwise/ only US-ASCII(7bit) code can be accepted as file/directory name. */#define _USE_NTFLAG 1/* When _USE_NTFLAG is set to 1, upper/lower case of the file name is preserved. */#include "integer.h"/* Type definition for cluster number */#if _FAT32typedef DWORD CLUST;#elsetypedef WORD CLUST;#undef _USE_FSINFO#define _USE_FSINFO 0#endif/* File system object structure */typedef struct _FATFS {WORD id; /* File system mount ID */WORD n_rootdir; /* Number of root directory entries */DWORD winsect; /* Current sector appearing in the win[] */DWORD fatbase; /* FAT start sector */DWORD dirbase; /* Root directory start sector */DWORD database; /* Data start sector */CLUST sects_fat; /* Sectors per fat */CLUST max_clust; /* Maximum cluster# + 1 */#if !_FS_READONLYCLUST last_clust; /* Last allocated cluster */CLUST free_clust; /* Number of free clusters */#if _USE_FSINFODWORD fsi_sector; /* fsinfo sector */BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */BYTE pad1;#endif#endifBYTE fs_type; /* FAT sub type */BYTE sects_clust; /* Sectors per cluster */BYTE n_fats; /* Number of FAT copies */BYTE winflag; /* win[] dirty flag (1:must be written back) */BYTE win[512]; /* Disk access window for Directory/FAT/File */} FATFS;/* Directory object structure */typedef struct _DIR {WORD id; /* Owner file system mount ID */WORD index; /* Current index */FATFS* fs; /* Pointer to the owner file system object */CLUST sclust; /* Start cluster */CLUST clust; /* Current cluster */DWORD sect; /* Current sector */} DIR;/* File object structure */typedef struct _FIL {WORD id; /* Owner file system mount ID */BYTE flag; /* File status flags */BYTE sect_clust; /* Left sectors in cluster */FATFS* fs; /* Pointer to owner file system */DWORD fptr; /* File R/W pointer */DWORD fsize; /* File size */CLUST org_clust; /* File start cluster */CLUST curr_clust; /* Current cluster */DWORD curr_sect; /* Current sector */#if !_FS_READONLYDWORD dir_sect; /* Sector containing the directory entry */BYTE* dir_ptr; /* Ponter to the directory entry in the window */#endif} FIL;/* File status structure */typedef struct _FILINFO {DWORD fsize; /* Size */WORD fdate; /* Date */WORD ftime; /* Time */BYTE fattrib; /* Attribute */char fname[8+1+3+1]; /* Name (8.3 format) */} FILINFO;/* File function return code (FRESULT) */typedef enum {FR_OK = 0, /* 0 */FR_NOT_READY, /* 1 */FR_NO_FILE, /* 2 */FR_NO_PATH, /* 3 */FR_INVALID_NAME, /* 4 */FR_INVALID_DRIVE, /* 5 */FR_DENIED, /* 6 */FR_EXIST, /* 7 */FR_RW_ERROR, /* 8 */FR_WRITE_PROTECTED, /* 9 */FR_NOT_ENABLED, /* 10 */FR_NO_FILESYSTEM, /* 11 */FR_INVALID_OBJECT /* 12 */} FRESULT;/*-----------------------------------------------------*//* FatFs module application interface */FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */FRESULT f_open (FIL*, const char*, BYTE); /* Open or create a file */FRESULT f_read (FIL*, void*, WORD, WORD*); /* Read data from a file */FRESULT f_write (FIL*, const void*, WORD, WORD*); /* Write data to 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 (DIR*, const char*); /* Open an existing directory */FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */FRESULT f_stat (const char*, FILINFO*); /* Get file status */FRESULT f_getfree (const char*, DWORD*, FATFS**); /* Get number of free clusters on the drive */FRESULT f_sync (FIL*); /* Flush cached data of a writing file */FRESULT f_unlink (const char*); /* Delete an existing file or directory */FRESULT f_mkdir (const char*); /* Create a new directory */FRESULT f_chmod (const char*, BYTE, BYTE); /* Change file/dir attriburte */FRESULT f_rename (const char*, const char*); /* Rename/Move a file or directory *//* User defined function to give a current time to fatfs module */DWORD get_fattime (void); /* 31-25: Year(0-127 +1980), 24-21: Month(1-12), 20-16: Day(1-31) *//* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) *//* File access control and file status flags (FIL.flag) */#define FA_READ 0x01#define FA_OPEN_EXISTING 0x00#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#endif#define FA__ERROR 0x80/* 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 *//* Offset of FAT structure members */#define BS_jmpBoot 0#define BS_OEMName 3#define BPB_BytsPerSec 11#define BPB_SecPerClus 13#define BPB_RsvdSecCnt 14#define BPB_NumFATs 16#define BPB_RootEntCnt 17#define BPB_TotSec16 19#define BPB_Media 21#define BPB_FATSz16 22#define BPB_SecPerTrk 24#define BPB_NumHeads 26#define BPB_HiddSec 28#define BPB_TotSec32 32#define BS_55AA 510#define BS_DrvNum 36#define BS_BootSig 38#define BS_VolID 39#define BS_VolLab 43#define BS_FilSysType 54#define BPB_FATSz32 36#define BPB_ExtFlags 40#define BPB_FSVer 42#define BPB_RootClus 44#define BPB_FSInfo 48#define BPB_BkBootSec 50#define BS_DrvNum32 64#define BS_BootSig32 66#define BS_VolID32 67#define BS_VolLab32 71#define BS_FilSysType32 82#define FSI_LeadSig 0#define FSI_StrucSig 484#define FSI_Free_Count 488#define FSI_Nxt_Free 492#define MBR_Table 446#define DIR_Name 0#define DIR_Attr 11#define DIR_NTres 12#define DIR_CrtTime 14#define DIR_CrtDate 16#define DIR_FstClusHI 20#define DIR_WrtTime 22#define DIR_WrtDate 24#define DIR_FstClusLO 26#define DIR_FileSize 28/* Multi-byte word access macros */#if _MCU_ENDIAN == 1 /* Use word access */#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#if _MCU_ENDIAN == 2 /* Use byte-by-byte access */#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)#else#error Do not forget to set _MCU_ENDIAN properly!#endif#endif#define _FATFS#endif /* _FATFS */