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/*---------------------------------------------------------------------------// Petit FatFs - FAT file system module include file R0.02a (C)ChaN, 2010/----------------------------------------------------------------------------// Petit FatFs module is an open source software to implement FAT file system to/ small embedded systems. This is a free software and is opened for education,/ research and commercial developments under license policy of following trems.// Copyright (C) 2010, ChaN, all right reserved.// * The Petit 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 use UNDER YOUR RESPONSIBILITY./ * Redistributions of source code must retain the above copyright notice.//----------------------------------------------------------------------------*/#include "integer.h"/*---------------------------------------------------------------------------// Petit FatFs Configuration Options// CAUTION! Do not forget to make clean the project after any changes to/ the configuration options.//----------------------------------------------------------------------------*/#ifndef _FATFS#define _FATFS#define _USE_READ 1 /* 1:Enable pf_read() */#define _USE_DIR 1 /* 1:Enable pf_opendir() and pf_readdir() */#define _USE_LSEEK 0 /* 1:Enable pf_lseek() */#define _USE_WRITE 0 /* 1:Enable pf_write() */#define _FS_FAT12 1 /* 1:Enable FAT12 support */#define _FS_FAT32 0 /* 1:Enable FAT32 support */#define _CODE_PAGE 1/* Defines which code page is used for path name. Supported code pages are:/ 932, 936, 949, 950, 437, 720, 737, 775, 850, 852, 855, 857, 858, 862, 866,/ 874, 1250, 1251, 1252, 1253, 1254, 1255, 1257, 1258 and 1 (ASCII only)./ SBCS code pages except for 1 requiers a case conversion table. This/ might occupy 128 bytes on the RAM on some platforms, e.g. avr-gcc. */#define _WORD_ACCESS 0/* The _WORD_ACCESS option defines which access method is used to the word/ data in the FAT structure.// 0: Byte-by-byte access. Always compatible with all platforms./ 1: Word access. Do not choose this unless following condition is met.// When the byte order on the memory is big-endian or address miss-aligned/ word access results incorrect behavior, the _WORD_ACCESS must be set to 0./ If it is not the case, the value can also be set to 1 to improve the/ performance and code efficiency. *//* End of configuration options. Do not change followings without care. *//*--------------------------------------------------------------------------*/#if _FS_FAT32#define CLUST DWORD#else#define CLUST WORD#endif/* File system object structure */typedef struct {BYTE fs_type; /* FAT sub type */BYTE flag; /* File status flags */BYTE csize; /* Number of sectors per cluster */BYTE pad1;WORD n_rootdir; /* Number of root directory entries (0 on FAT32) */CLUST n_fatent; /* Number of FAT entries (= number of clusters + 2) */DWORD fatbase; /* FAT start sector */DWORD dirbase; /* Root directory start sector (Cluster# on FAT32) */DWORD database; /* Data start sector */DWORD fptr; /* File R/W pointer */DWORD fsize; /* File size */CLUST org_clust; /* File start cluster */CLUST curr_clust; /* File current cluster */DWORD dsect; /* File current data sector */} FATFS;/* Directory object structure */typedef struct {WORD index; /* Current read/write index number */BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */CLUST sclust; /* Table start cluster (0:Static table) */CLUST clust; /* Current cluster */DWORD sect; /* Current sector */} DIR;/* File status structure */typedef struct {DWORD fsize; /* File size */WORD fdate; /* Last modified date */WORD ftime; /* Last modified time */BYTE fattrib; /* Attribute */char fname[13]; /* File name */} FILINFO;/* File function return code (FRESULT) */typedef enum {FR_OK = 0, /* 0 */FR_DISK_ERR, /* 1 */FR_NOT_READY, /* 2 */FR_NO_FILE, /* 3 */FR_NO_PATH, /* 4 */FR_NOT_OPENED, /* 5 */FR_NOT_ENABLED, /* 6 */FR_NO_FILESYSTEM /* 7 */} FRESULT;/*--------------------------------------------------------------*//* Petit FatFs module application interface */FRESULT pf_mount (FATFS*); /* Mount/Unmount a logical drive */FRESULT pf_open (const char*); /* Open a file */FRESULT pf_read (void*, WORD, WORD*); /* Read data from the open file */FRESULT pf_write (const void*, WORD, WORD*); /* Write data to the open file */FRESULT pf_lseek (DWORD); /* Move file pointer of the open file */FRESULT pf_opendir (DIR*, const char*); /* Open a directory */FRESULT pf_readdir (DIR*, FILINFO*); /* Read a directory item from the open directory *//*--------------------------------------------------------------*//* Flags and offset address *//* File status flag (FATFS.flag) */#define FA_OPENED 0x01#define FA_WPRT 0x02#define FA__WIP 0x40/* 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 *//*--------------------------------*//* 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#endif /* _FATFS */