ff.h

/*---------------------------------------------------------------------------/
/  FatFs - FAT file system module include file  R0.10b    (C)ChaN, 2014
/----------------------------------------------------------------------------/
/ 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) 2014, 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  8051    /* 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        

typedef struct 
{
    BYTE pd;    
    BYTE pt;    
} PARTITION;

extern PARTITION VolToPart[];           
#define LD2PD(vol) (VolToPart[vol].pd)  
#define LD2PT(vol) (VolToPart[vol].pt)  

#else                           
#define LD2PD(vol) (BYTE)(vol)  
#define LD2PT(vol) 0            

#endif

/* Type of path name strings on FatFs API */

#if _LFN_UNICODE            /* Unicode string */
#if !_USE_LFN
#error _LFN_UNICODE must be 0 at 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



typedef struct 
{
    BYTE    fs_type;        
    BYTE    drv;            
    BYTE    csize;          
    BYTE    n_fats;         
    BYTE    wflag;          
    BYTE    fsi_flag;       
    WORD    id;             
    WORD    n_rootdir;      
#if _MAX_SS != _MIN_SS
    WORD    ssize;          
#endif
#if _FS_REENTRANT
    _SYNC_t sobj;           
#endif
#if !_FS_READONLY
    DWORD   last_clust;     
    DWORD   free_clust;     
#endif
#if _FS_RPATH
    DWORD   cdir;           
#endif
    DWORD   n_fatent;       
    DWORD   fsize;          
    DWORD   volbase;        
    DWORD   fatbase;        
    DWORD   dirbase;        
    DWORD   database;       
    DWORD   winsect;        
    BYTE    win[_MAX_SS];   
} FATFS;



typedef struct 
{
    FATFS*  fs;             
    WORD    id;             
    BYTE    flag;           
    BYTE    err;            
    DWORD   fptr;           
    DWORD   fsize;          
    DWORD   sclust;         
    DWORD   clust;          
    DWORD   dsect;          
#if !_FS_READONLY
    DWORD   dir_sect;       
    BYTE*   dir_ptr;        
#endif
#if _USE_FASTSEEK
    DWORD*  cltbl;          
#endif
#if _FS_LOCK
    UINT    lockid;         
#endif
#if !_FS_TINY
    BYTE    buf[_MAX_SS];   
#endif
} FIL;



typedef struct 
{
    FATFS*  fs;             
    WORD    id;             
    WORD    index;          
    DWORD   sclust;         
    DWORD   clust;          
    DWORD   sect;           
    BYTE*   dir;            
    BYTE*   fn;             
#if _FS_LOCK
    UINT    lockid;         
#endif
#if _USE_LFN
    WCHAR*  lfn;            
    WORD    lfn_idx;        
#endif
} DIR;


typedef struct 
{
    DWORD   fsize;          
    WORD    fdate;          
    WORD    ftime;          
    BYTE    fattrib;        
    TCHAR   fname[13];      
#if _USE_LFN
    TCHAR*  lfname;         
    UINT    lfsize;         
#endif
} FILINFO;


typedef enum 
{
    FR_OK = 0,              
    FR_DISK_ERR,            
    FR_INT_ERR,             
    FR_NOT_READY,           
    FR_NO_FILE,             
    FR_NO_PATH,             
    FR_INVALID_NAME,        
    FR_DENIED,              
    FR_EXIST,               
    FR_INVALID_OBJECT,      
    FR_WRITE_PROTECTED,     
    FR_INVALID_DRIVE,       
    FR_NOT_ENABLED,         
    FR_NO_FILESYSTEM,       
    FR_MKFS_ABORTED,        
    FR_TIMEOUT,             
    FR_LOCKED,              
    FR_NOT_ENOUGH_CORE,     
    FR_TOO_MANY_OPEN_FILES, 
    FR_INVALID_PARAMETER    
} FRESULT;


/*--------------------------------------------------------------*/
/* FatFs module application interface                           */

FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode);             /* Open or create a file */
FRESULT f_close (FIL* fp);                                          /* Close an open file object */
FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br);           /* Read data from a file */
FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw);    /* Write data to a file */
FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
FRESULT f_lseek (FIL* fp, DWORD ofs);                               /* Move file pointer of a file object */
FRESULT f_truncate (FIL* fp);                                       /* Truncate file */
FRESULT f_sync (FIL* fp);                                           /* Flush cached data of a writing file */
FRESULT f_opendir (DIR* dp, const TCHAR* path);                     /* Open a directory */
FRESULT f_closedir (DIR* dp);                                       /* Close an open directory */
FRESULT f_readdir (DIR* dp, FILINFO* fno);                          /* Read a directory item */
FRESULT f_mkdir (const TCHAR* path);                                /* Create a sub directory */
FRESULT f_unlink (const TCHAR* path);                               /* Delete an existing file or directory */
FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new);    /* Rename/Move a file or directory */
FRESULT f_stat (const TCHAR* path, FILINFO* fno);                   /* Get file status */
FRESULT f_chmod (const TCHAR* path, BYTE value, BYTE mask);         /* Change attribute of the file/dir */
FRESULT f_utime (const TCHAR* path, const FILINFO* fno);            /* Change times-tamp of the file/dir */
FRESULT f_chdir (const TCHAR* path);                                /* Change current directory */
FRESULT f_chdrive (const TCHAR* path);                              /* Change current drive */
FRESULT f_getcwd (TCHAR* buff, UINT len);                           /* Get current directory */
FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */
FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn);   /* Get volume label */
FRESULT f_setlabel (const TCHAR* label);                            /* Set volume label */
FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt);           /* Mount/Unmount a logical drive */
FRESULT f_mkfs (const TCHAR* path, BYTE sfd, UINT au);              /* Create a file system on the volume */
FRESULT f_fdisk (BYTE pdrv, const DWORD szt[], void* work);         /* Divide a physical drive into some partitions */
int f_putc (TCHAR c, FIL* fp);                                      /* Put a character to the file */
int f_puts (const TCHAR* str, FIL* cp);                             /* Put a string to the file */
int f_printf (FIL* fp, const TCHAR* str, ...);                      /* Put a formatted string to the file */
TCHAR* f_gets (TCHAR* buff, int len, FIL* fp);                      /* Get a string from the file */

#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
#define f_error(fp) ((fp)->err)
#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 chr, UINT dir); /* OEM-Unicode bidirectional conversion */
WCHAR ff_wtoupper (WCHAR chr);          /* Unicode upper-case conversion */
#if _USE_LFN == 3                       /* Memory functions */
void* ff_memalloc (UINT msize);         /* Allocate memory block */
void ff_memfree (void* mblock);         /* Free memory block */
#endif
#endif

/* Sync functions */
#if _FS_REENTRANT
int ff_cre_syncobj (BYTE vol, _SYNC_t* sobj);   /* Create a sync object */
int ff_req_grant (_SYNC_t sobj);                /* Lock sync object */
void ff_rel_grant (_SYNC_t sobj);               /* Unlock sync object */
int ff_del_syncobj (_SYNC_t sobj);              /* 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

#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 */