/*--------------------------------------------------------------------------// FatFs - FAT file system module include file R0.06 (C)ChaN, 2008/---------------------------------------------------------------------------// 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) 2008, 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/ commercial use without any restriction under your responsibility./ * Redistributions of source code must retain the above copyright notice.//---------------------------------------------------------------------------*/#ifndef _FATFS#define _MCU_ENDIAN 0/* 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 results incorrect behavior, the _MCU_ENDIAN must be set to 2./ If it is not the case, it can also 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,/ f_truncate and useless f_getfree. */#define _FS_MINIMIZE 0/* 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, f_truncate 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 _USE_STRFUNC 0/* To enable string functions, set _USE_STRFUNC to 1 or 2. */#define _USE_MKFS 0/* When _USE_MKFS is set to 1 and _FS_READONLY is set to 0, f_mkfs function is/ enabled. */#define _DRIVES 2/* Number of logical drives to be used. This affects the size of internal table. */#define _MULTI_PARTITION 0/* When _MULTI_PARTITION is set to 0, each logical drive is bound to same/ physical drive number and can mount only 1st primaly partition. When it is/ set to 1, each logical drive can mount a partition listed in Drives[]. */#define _USE_FSINFO 0/* To enable FSInfo support on FAT32 volume, set _USE_FSINFO to 1. */#define _USE_SJIS 1/* 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./ Note that the files are always accessed in case insensitive. */#include "integer.h"/* Definitions corresponds to multiple sector size (not tested) */#define S_MAX_SIZ 512U /* Do not change */#if S_MAX_SIZ > 512U#define SS(fs) ((fs)->s_size)#else#define SS(fs) 512U#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 sects_fat; /* Sectors per fat */DWORD max_clust; /* Maximum cluster# + 1 */DWORD fatbase; /* FAT start sector */DWORD dirbase; /* Root directory start sector (cluster# for FAT32) */DWORD database; /* Data start sector */#if !_FS_READONLYDWORD last_clust; /* Last allocated cluster */DWORD 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 pad2;#endif#endifBYTE fs_type; /* FAT sub type */BYTE csize; /* Number of sectors per cluster */#if S_MAX_SIZ > 512UWORD s_size; /* Sector size */#endifBYTE n_fats; /* Number of FAT copies */BYTE drive; /* Physical drive number */BYTE winflag; /* win[] dirty flag (1:must be written back) */BYTE pad1;BYTE win[S_MAX_SIZ]; /* Disk access window for Directory/FAT */} 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 */DWORD sclust; /* Start cluster */DWORD 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 csect; /* Sector address in the cluster */FATFS* fs; /* Pointer to the owner file system object */DWORD fptr; /* File R/W pointer */DWORD fsize; /* File size */DWORD org_clust; /* File start cluster */DWORD curr_clust; /* Current cluster */DWORD curr_sect; /* Current sector */#if _FS_READONLY == 0DWORD dir_sect; /* Sector containing the directory entry */BYTE* dir_ptr; /* Ponter to the directory entry in the window */#endifBYTE buffer[S_MAX_SIZ]; /* File R/W buffer */} 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;/* Definitions corresponds to multi partition */#if _MULTI_PARTITION != 0 /* Multiple partition cfg */typedef struct _PARTITION {BYTE pd; /* Physical drive # (0-255) */BYTE pt; /* Partition # (0-3) */} PARTITION;externconst PARTITION Drives[]; /* Logical drive# to physical location conversion table */#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */#else /* Single partition cfg */#define LD2PD(drv) (drv) /* Physical drive# is equal to logical drive# */#define LD2PT(drv) 0 /* Always mounts the 1st partition */#endif/* 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 */FR_MKFS_ABORTED /* 13 */} 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*, UINT, UINT*); /* Read data from a file */FRESULT f_write (FIL*, const void*, UINT, UINT*); /* 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_truncate (FIL*); /* Truncate file */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_utime (const char*, const FILINFO*); /* Change file/dir timestamp */FRESULT f_rename (const char*, const char*); /* Rename/Move a file or directory */FRESULT f_mkfs (BYTE, BYTE, WORD); /* Create a file system on the drive */#if _USE_STRFUNC#define feof(fp) ((fp)->fptr == (fp)->fsize)#define EOF -1int fputc (int, FIL*); /* Put a character to the file */int fputs (const char*, FIL*); /* Put a string to the file */int fprintf (FIL*, const char*, ...); /* Put a formatted string to the file */char* fgets (char*, int, FIL*); /* Get a string from the file */#endif/* User defined function to give a current time to fatfs module */DWORD get_fattime (void); /* 31-25: Year(0-127 org.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 == 0#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#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)#elif _MCU_ENDIAN == 2 /* Use byte-by-byte access */#define LD_WORD(ptr) (WORD)(((WORD)*(volatile BYTE*)((ptr)+1)<<8)|(WORD)*(volatile BYTE*)(ptr))#define LD_DWORD(ptr) (DWORD)(((DWORD)*(volatile BYTE*)((ptr)+3)<<24)|((DWORD)*(volatile BYTE*)((ptr)+2)<<16)|((WORD)*(volatile BYTE*)((ptr)+1)<<8)|*(volatile BYTE*)(ptr))#define ST_WORD(ptr,val) *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8)#define ST_DWORD(ptr,val) *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(volatile BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(volatile BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)#else#error Do not forget to set _MCU_ENDIAN properly!#endif#define _FATFS#endif /* _FATFS */