text: /*----------------------------------------------------------------------------/
  /  FatFs - Generic FAT file system module  R0.12c                             /
  /-----------------------------------------------------------------------------/
  /
  / Copyright (C) 2017, ChaN, all right reserved.
  /
  / FatFs module is an open source software. Redistribution and use of FatFs in
  / source and binary forms, with or without modification, are permitted provided
  / that the following condition is met:
  
  / 1. Redistributions of source code must retain the above copyright notice,
  /    this condition and the following disclaimer.
  /
  / This software is provided by the copyright holder and contributors "AS IS"
  / and any warranties related to this software are DISCLAIMED.
  / The copyright owner or contributors be NOT LIABLE for any damages caused
  / by use of this software.
  /----------------------------------------------------------------------------*/
  
  
  #ifndef _FATFS
  #define _FATFS	68300	/* Revision ID */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include <SDCard/fatFS/integer.h>	/* Basic integer types */
  #include <SDCard/fatFS/ffconf.h>		/* FatFs configuration options */
  
  #if _FATFS != _FFCONF
  #error Wrong configuration file (ffconf.h).
  #endif
  
  
  
  /* Definitions of volume management */
  
  #if _MULTI_PARTITION		/* Multiple partition configuration */
  typedef struct {
  	BYTE pd;	/* Physical drive number */
  	BYTE pt;	/* Partition: 0:Auto detect, 1-4:Forced partition) */
  } PARTITION;
  extern PARTITION VolToPart[];	/* Volume - Partition resolution table */
  #endif
  
  
  
  /* Type of path name strings on FatFs API */
  
  #if _LFN_UNICODE			/* Unicode (UTF-16) string */
  #if _USE_LFN == 0
  #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
  
  
  
  /* Type of file size variables */
  
  #if _FS_EXFAT
  #if _USE_LFN == 0
  #error LFN must be enabled when enable exFAT
  #endif
  typedef QWORD FSIZE_t;
  #else
  typedef DWORD FSIZE_t;
  #endif
  
  
  
  /* File system object structure (FATFS) */
  
  typedef struct {
  	BYTE	fs_type;		/* File system type (0:N/A) */
  	BYTE	drv;			/* Physical drive number */
  	BYTE	n_fats;			/* Number of FATs (1 or 2) */
  	BYTE	wflag;			/* win[] flag (b0:dirty) */
  	BYTE	fsi_flag;		/* FSINFO flags (b7:disabled, b0:dirty) */
  	WORD	id;				/* File system mount ID */
  	WORD	n_rootdir;		/* Number of root directory entries (FAT12/16) */
  	WORD	csize;			/* Cluster size [sectors] */
  #if _MAX_SS != _MIN_SS
  	WORD	ssize;			/* Sector size (512, 1024, 2048 or 4096) */
  #endif
  #if _USE_LFN != 0
  	WCHAR*	lfnbuf;			/* LFN working buffer */
  #endif
  #if _FS_EXFAT
  	BYTE*	dirbuf;			/* Directory entry block scratchpad buffer */
  #endif
  #if _FS_REENTRANT
  	_SYNC_t	sobj;			/* Identifier of sync object */
  #endif
  #if !_FS_READONLY
  	DWORD	last_clst;		/* Last allocated cluster */
  	DWORD	free_clst;		/* Number of free clusters */
  #endif
  #if _FS_RPATH != 0
  	DWORD	cdir;			/* Current directory start cluster (0:root) */
  #if _FS_EXFAT
  	DWORD	cdc_scl;		/* Containing directory start cluster (invalid when cdir is 0) */
  	DWORD	cdc_size;		/* b31-b8:Size of containing directory, b7-b0: Chain status */
  	DWORD	cdc_ofs;		/* Offset in the containing directory (invalid when cdir is 0) */
  #endif
  #endif
  	DWORD	n_fatent;		/* Number of FAT entries (number of clusters + 2) */
  	DWORD	fsize;			/* Size of an FAT [sectors] */
  	DWORD	volbase;		/* Volume base sector */
  	DWORD	fatbase;		/* FAT base sector */
  	DWORD	dirbase;		/* Root directory base sector/cluster */
  	DWORD	database;		/* Data base sector */
  	DWORD	winsect;		/* Current sector appearing in the win[] */
  	BYTE	win[_MAX_SS];	/* Disk access window for Directory, FAT (and file data at tiny cfg) */
  } FATFS;
  
  
  
  /* Object ID and allocation information (_FDID) */
  
  typedef struct {
  	FATFS*	fs;			/* Pointer to the owner file system object */
  	WORD	id;			/* Owner file system mount ID */
  	BYTE	attr;		/* Object attribute */
  	BYTE	stat;		/* Object chain status (b1-0: =0:not contiguous, =2:contiguous (no data on FAT), =3:flagmented in this session, b2:sub-directory stretched) */
  	DWORD	sclust;		/* Object start cluster (0:no cluster or root directory) */
  	FSIZE_t	objsize;	/* Object size (valid when sclust != 0) */
  #if _FS_EXFAT
  	DWORD	n_cont;		/* Size of first fragment, clusters - 1 (valid when stat == 3) */
  	DWORD	n_frag;		/* Size of last fragment needs to be written (valid when not zero) */
  	DWORD	c_scl;		/* Containing directory start cluster (valid when sclust != 0) */
  	DWORD	c_size;		/* b31-b8:Size of containing directory, b7-b0: Chain status (valid when c_scl != 0) */
  	DWORD	c_ofs;		/* Offset in the containing directory (valid when sclust != 0 and non-directory object) */
  #endif
  #if _FS_LOCK != 0
  	UINT	lockid;		/* File lock ID origin from 1 (index of file semaphore table Files[]) */
  #endif
  } _FDID;
  
  
  
  /* File object structure (FIL) */
  
  typedef struct {
  	_FDID	obj;			/* Object identifier (must be the 1st member to detect invalid object pointer) */
  	BYTE	flag;			/* File status flags */
  	BYTE	err;			/* Abort flag (error code) */
  	FSIZE_t	fptr;			/* File read/write pointer (Zeroed on file open) */
  	DWORD	clust;			/* Current cluster of fpter (invalid when fptr is 0) */
  	DWORD	sect;			/* Sector number appearing in buf[] (0:invalid) */
  #if !_FS_READONLY
  	DWORD	dir_sect;		/* Sector number containing the directory entry */
  	BYTE*	dir_ptr;		/* Pointer to the directory entry in the win[] */
  #endif
  #if _USE_FASTSEEK
  	DWORD*	cltbl;			/* Pointer to the cluster link map table (nulled on open, set by application) */
  #endif
  #if !_FS_TINY
  	BYTE	buf[_MAX_SS];	/* File private data read/write window */
  #endif
  } FIL;
  
  
  
  /* Directory object structure (DIR) */
  
  typedef struct {
  	_FDID	obj;			/* Object identifier */
  	DWORD	dptr;			/* Current read/write offset */
  	DWORD	clust;			/* Current cluster */
  	DWORD	sect;			/* Current sector (0:Read operation has terminated) */
  	BYTE*	dir;			/* Pointer to the directory item in the win[] */
  	BYTE	fn[12];			/* SFN (in/out) {body[8],ext[3],status[1]} */
  #if _USE_LFN != 0
  	DWORD	blk_ofs;		/* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
  #endif
  #if _USE_FIND
  	const TCHAR* pat;		/* Pointer to the name matching pattern */
  #endif
  } DIR;
  
  
  
  /* File information structure (FILINFO) */
  
  typedef struct {
  	FSIZE_t	fsize;			/* File size */
  	WORD	fdate;			/* Modified date */
  	WORD	ftime;			/* Modified time */
  	BYTE	fattrib;		/* File attribute */
  #if _USE_LFN != 0
  	TCHAR	altname[13];			/* Alternative file name */
  	TCHAR	fname[_MAX_LFN + 1];	/* Primary file name */
  #else
  	TCHAR	fname[13];		/* File name */
  #endif
  } FILINFO;
  
  
  
  /* File function return code (FRESULT) */
  
  typedef enum {
  	FR_OK = 0,				/* (0) Succeeded */
  	FR_DISK_ERR,			/* (1) A hard error occurred in the low level disk I/O layer */
  	FR_INT_ERR,				/* (2) Assertion failed */
  	FR_NOT_READY,			/* (3) The physical drive cannot work */
  	FR_NO_FILE,				/* (4) Could not find the file */
  	FR_NO_PATH,				/* (5) Could not find the path */
  	FR_INVALID_NAME,		/* (6) The path name format is invalid */
  	FR_DENIED,				/* (7) Access denied due to prohibited access or directory full */
  	FR_EXIST,				/* (8) Access denied due to prohibited access */
  	FR_INVALID_OBJECT,		/* (9) The file/directory object is invalid */
  	FR_WRITE_PROTECTED,		/* (10) The physical drive is write protected */
  	FR_INVALID_DRIVE,		/* (11) The logical drive number is invalid */
  	FR_NOT_ENABLED,			/* (12) The volume has no work area */
  	FR_NO_FILESYSTEM,		/* (13) There is no valid FAT volume */
  	FR_MKFS_ABORTED,		/* (14) The f_mkfs() aborted due to any problem */
  	FR_TIMEOUT,				/* (15) Could not get a grant to access the volume within defined period */
  	FR_LOCKED,				/* (16) The operation is rejected according to the file sharing policy */
  	FR_NOT_ENOUGH_CORE,		/* (17) LFN working buffer could not be allocated */
  	FR_TOO_MANY_OPEN_FILES,	/* (18) Number of open files > _FS_LOCK */
  	FR_INVALID_PARAMETER	/* (19) Given parameter is invalid */
  } 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 the file */
  FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw);	/* Write data to the file */
  FRESULT f_lseek (FIL* fp, FSIZE_t ofs);								/* Move file pointer of the file object */
  FRESULT f_truncate (FIL* fp);										/* Truncate the file */
  FRESULT f_sync (FIL* fp);											/* Flush cached data of the 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_findfirst (DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern);	/* Find first file */
  FRESULT f_findnext (DIR* dp, FILINFO* fno);							/* Find next file */
  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 attr, BYTE mask);			/* Change attribute of a file/dir */
  FRESULT f_utime (const TCHAR* path, const FILINFO* fno);			/* Change timestamp of a 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_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf);	/* Forward data to the stream */
  FRESULT f_expand (FIL* fp, FSIZE_t szf, BYTE opt);					/* Allocate a contiguous block to the file */
  FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt);			/* Mount/Unmount a logical drive */
  FRESULT f_mkfs (const TCHAR* path, BYTE opt, DWORD au, void* work, UINT len);	/* Create a FAT 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) ((int)((fp)->fptr == (fp)->obj.objsize))
  #define f_error(fp) ((fp)->err)
  #define f_tell(fp) ((fp)->fptr)
  #define f_size(fp) ((fp)->obj.objsize)
  #define f_rewind(fp) f_lseek((fp), 0)
  #define f_rewinddir(dp) f_readdir((dp), 0)
  #define f_rmdir(path) f_unlink(path)
  
  #ifndef EOF
  #define EOF (-1)
  #endif
  
  
  
  
  /*--------------------------------------------------------------*/
  /* Additional user defined functions                            */
  
  /* RTC function */
  #if !_FS_READONLY && !_FS_NORTC
  DWORD get_fattime (void);
  #endif
  
  /* Unicode support functions */
  #if _USE_LFN != 0						/* 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 mode and open method flags (3rd argument of f_open) */
  #define	FA_OPEN_EXISTING	0x00
  #define	FA_READ				0x01
  #define	FA_WRITE			0x02
  #define	FA_CREATE_NEW		0x04
  #define	FA_CREATE_ALWAYS	0x08
  #define	FA_OPEN_ALWAYS		0x10
  #define	FA_OPEN_APPEND		0x30
  
  /* Fast seek controls (2nd argument of f_lseek) */
  #define CREATE_LINKMAP	((FSIZE_t)0 - 1)
  
  /* Format options (2nd argument of f_mkfs) */
  #define FM_FAT		0x01
  #define FM_FAT32	0x02
  #define FM_EXFAT	0x04
  #define FM_ANY		0x07
  #define FM_SFD		0x08
  
  /* Filesystem type (FATFS.fs_type) */
  #define FS_FAT12	1
  #define FS_FAT16	2
  #define FS_FAT32	3
  #define FS_EXFAT	4
  
  /* File attribute bits for directory entry (FILINFO.fattrib) */
  #define	AM_RDO	0x01	/* Read only */
  #define	AM_HID	0x02	/* Hidden */
  #define	AM_SYS	0x04	/* System */
  #define AM_DIR	0x10	/* Directory */
  #define AM_ARC	0x20	/* Archive */
  
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _FATFS */
  