mirror of
https://github.com/ApacheThunder/omega-kernel-boot-to-nor.git
synced 2025-06-18 19:25:32 -04:00
252dfd3a6a
* Bring over updated fat lib from DE kernel. * Updated Write_SD_sectors function to include fail condition check introduced in DE's kernel. * Removed old/unused copies of fat lib. * Refactored button detection routine for skipping autoboot/triggering boot last SD list game. * Press A to boot last played game from PSRAM actually triggers now. Unfortunately it doesn't actually seem to be working right now. Previously due to how the old button detection code was setup, the press A code wasn't triggering at all. * Press B option provided in commented out code for dumping fat table. Compile with this enabled (and the related changes in EZcard_OP.c) to enable dumping fat table to SD prior to booting game. Useful for debugging fat table related stuff for custom kernels/external launchers on DS. Disabled by default as this has no practicle use for end users.
430 lines
16 KiB
C
430 lines
16 KiB
C
/*----------------------------------------------------------------------------/
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/ FatFs - Generic FAT Filesystem module R0.15 /
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/-----------------------------------------------------------------------------/
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/
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/ Copyright (C) 2022, ChaN, all right reserved.
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/
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/ FatFs module is an open source software. Redistribution and use of FatFs in
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/ source and binary forms, with or without modification, are permitted provided
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/ that the following condition is met:
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/ 1. Redistributions of source code must retain the above copyright notice,
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/ this condition and the following disclaimer.
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/
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/ This software is provided by the copyright holder and contributors "AS IS"
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/ and any warranties related to this software are DISCLAIMED.
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/ The copyright owner or contributors be NOT LIABLE for any damages caused
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/ by use of this software.
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/
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/----------------------------------------------------------------------------*/
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#ifndef FF_DEFINED
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#define FF_DEFINED 80286 /* Revision ID */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "ffconf.h" /* FatFs configuration options */
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#if FF_DEFINED != FFCONF_DEF
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#error Wrong configuration file (ffconf.h).
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#endif
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/* Integer types used for FatFs API */
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#if defined(_WIN32) /* Windows VC++ (for development only) */
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#define FF_INTDEF 2
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#include <windows.h>
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typedef unsigned __int64 QWORD;
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#include <float.h>
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#define isnan(v) _isnan(v)
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#define isinf(v) (!_finite(v))
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#elif (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) /* C99 or later */
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#define FF_INTDEF 2
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#include <stdint.h>
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typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
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typedef unsigned char BYTE; /* char must be 8-bit */
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typedef uint16_t WORD; /* 16-bit unsigned integer */
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typedef uint32_t DWORD; /* 32-bit unsigned integer */
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typedef uint64_t QWORD; /* 64-bit unsigned integer */
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typedef WORD WCHAR; /* UTF-16 character type */
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#else /* Earlier than C99 */
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#define FF_INTDEF 1
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typedef unsigned int UINT; /* int must be 16-bit or 32-bit */
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typedef unsigned char BYTE; /* char must be 8-bit */
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typedef unsigned short WORD; /* 16-bit unsigned integer */
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typedef unsigned long DWORD; /* 32-bit unsigned integer */
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typedef WORD WCHAR; /* UTF-16 character type */
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#endif
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/* Type of file size and LBA variables */
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#if FF_FS_EXFAT
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#if FF_INTDEF != 2
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#error exFAT feature wants C99 or later
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#endif
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typedef QWORD FSIZE_t;
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#if FF_LBA64
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typedef QWORD LBA_t;
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#else
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typedef DWORD LBA_t;
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#endif
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#else
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#if FF_LBA64
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#error exFAT needs to be enabled when enable 64-bit LBA
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#endif
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typedef DWORD FSIZE_t;
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typedef DWORD LBA_t;
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#endif
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/* Type of path name strings on FatFs API (TCHAR) */
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#if FF_USE_LFN && FF_LFN_UNICODE == 1 /* Unicode in UTF-16 encoding */
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typedef WCHAR TCHAR;
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#define _T(x) L ## x
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#define _TEXT(x) L ## x
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#elif FF_USE_LFN && FF_LFN_UNICODE == 2 /* Unicode in UTF-8 encoding */
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typedef char TCHAR;
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#define _T(x) u8 ## x
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#define _TEXT(x) u8 ## x
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#elif FF_USE_LFN && FF_LFN_UNICODE == 3 /* Unicode in UTF-32 encoding */
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typedef DWORD TCHAR;
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#define _T(x) U ## x
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#define _TEXT(x) U ## x
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#elif FF_USE_LFN && (FF_LFN_UNICODE < 0 || FF_LFN_UNICODE > 3)
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#error Wrong FF_LFN_UNICODE setting
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#else /* ANSI/OEM code in SBCS/DBCS */
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typedef char TCHAR;
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#define _T(x) x
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#define _TEXT(x) x
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#endif
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/* Definitions of volume management */
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#if FF_MULTI_PARTITION /* Multiple partition configuration */
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typedef struct {
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BYTE pd; /* Physical drive number */
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BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
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} PARTITION;
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extern PARTITION VolToPart[]; /* Volume - Partition mapping table */
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#endif
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#if FF_STR_VOLUME_ID
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#ifndef FF_VOLUME_STRS
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extern const char* VolumeStr[FF_VOLUMES]; /* User defied volume ID */
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#endif
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#endif
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/* Filesystem object structure (FATFS) */
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typedef struct {
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BYTE fs_type; /* Filesystem type (0:not mounted) */
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BYTE pdrv; /* Volume hosting physical drive */
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BYTE ldrv; /* Logical drive number (used only when FF_FS_REENTRANT) */
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BYTE n_fats; /* Number of FATs (1 or 2) */
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BYTE wflag; /* win[] status (b0:dirty) */
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BYTE fsi_flag; /* FSINFO status (b7:disabled, b0:dirty) */
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WORD id; /* Volume mount ID */
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WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
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WORD csize; /* Cluster size [sectors] */
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#if FF_MAX_SS != FF_MIN_SS
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WORD ssize; /* Sector size (512, 1024, 2048 or 4096) */
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#endif
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#if FF_USE_LFN
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WCHAR* lfnbuf; /* LFN working buffer */
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#endif
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#if FF_FS_EXFAT
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BYTE* dirbuf; /* Directory entry block scratchpad buffer for exFAT */
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#endif
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#if !FF_FS_READONLY
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DWORD last_clst; /* Last allocated cluster */
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DWORD free_clst; /* Number of free clusters */
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#endif
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#if FF_FS_RPATH
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DWORD cdir; /* Current directory start cluster (0:root) */
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#if FF_FS_EXFAT
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DWORD cdc_scl; /* Containing directory start cluster (invalid when cdir is 0) */
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DWORD cdc_size; /* b31-b8:Size of containing directory, b7-b0: Chain status */
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DWORD cdc_ofs; /* Offset in the containing directory (invalid when cdir is 0) */
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#endif
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#endif
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DWORD n_fatent; /* Number of FAT entries (number of clusters + 2) */
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DWORD fsize; /* Number of sectors per FAT */
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LBA_t volbase; /* Volume base sector */
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LBA_t fatbase; /* FAT base sector */
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LBA_t dirbase; /* Root directory base sector (FAT12/16) or cluster (FAT32/exFAT) */
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LBA_t database; /* Data base sector */
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#if FF_FS_EXFAT
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LBA_t bitbase; /* Allocation bitmap base sector */
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#endif
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LBA_t winsect; /* Current sector appearing in the win[] */
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BYTE win[FF_MAX_SS]; /* Disk access window for Directory, FAT (and file data at tiny cfg) */
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} FATFS;
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/* Object ID and allocation information (FFOBJID) */
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typedef struct {
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FATFS* fs; /* Pointer to the hosting volume of this object */
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WORD id; /* Hosting volume's mount ID */
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BYTE attr; /* Object attribute */
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BYTE stat; /* Object chain status (b1-0: =0:not contiguous, =2:contiguous, =3:fragmented in this session, b2:sub-directory stretched) */
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DWORD sclust; /* Object data start cluster (0:no cluster or root directory) */
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FSIZE_t objsize; /* Object size (valid when sclust != 0) */
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#if FF_FS_EXFAT
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DWORD n_cont; /* Size of first fragment - 1 (valid when stat == 3) */
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DWORD n_frag; /* Size of last fragment needs to be written to FAT (valid when not zero) */
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DWORD c_scl; /* Containing directory start cluster (valid when sclust != 0) */
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DWORD c_size; /* b31-b8:Size of containing directory, b7-b0: Chain status (valid when c_scl != 0) */
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DWORD c_ofs; /* Offset in the containing directory (valid when file object and sclust != 0) */
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#endif
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#if FF_FS_LOCK
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UINT lockid; /* File lock ID origin from 1 (index of file semaphore table Files[]) */
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#endif
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} FFOBJID;
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/* File object structure (FIL) */
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typedef struct {
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FFOBJID obj; /* Object identifier (must be the 1st member to detect invalid object pointer) */
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BYTE flag; /* File status flags */
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BYTE err; /* Abort flag (error code) */
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FSIZE_t fptr; /* File read/write pointer (Zeroed on file open) */
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DWORD clust; /* Current cluster of fpter (invalid when fptr is 0) */
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LBA_t sect; /* Sector number appearing in buf[] (0:invalid) */
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#if !FF_FS_READONLY
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LBA_t dir_sect; /* Sector number containing the directory entry (not used at exFAT) */
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BYTE* dir_ptr; /* Pointer to the directory entry in the win[] (not used at exFAT) */
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#endif
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#if FF_USE_FASTSEEK
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DWORD* cltbl; /* Pointer to the cluster link map table (nulled on open, set by application) */
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#endif
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#if !FF_FS_TINY
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BYTE buf[FF_MAX_SS]; /* File private data read/write window */
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#endif
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} FIL;
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/* Directory object structure (DIR) */
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typedef struct {
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FFOBJID obj; /* Object identifier */
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DWORD dptr; /* Current read/write offset */
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DWORD clust; /* Current cluster */
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LBA_t sect; /* Current sector (0:Read operation has terminated) */
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BYTE* dir; /* Pointer to the directory item in the win[] */
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BYTE fn[12]; /* SFN (in/out) {body[8],ext[3],status[1]} */
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#if FF_USE_LFN
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DWORD blk_ofs; /* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
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#endif
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#if FF_USE_FIND
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const TCHAR* pat; /* Pointer to the name matching pattern */
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#endif
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} DIR;
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/* File information structure (FILINFO) */
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typedef struct {
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FSIZE_t fsize; /* File size */
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WORD fdate; /* Modified date */
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WORD ftime; /* Modified time */
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BYTE fattrib; /* File attribute */
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#if FF_USE_LFN
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TCHAR altname[FF_SFN_BUF + 1];/* Alternative file name */
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TCHAR fname[FF_LFN_BUF + 1]; /* Primary file name */
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#else
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TCHAR fname[12 + 1]; /* File name */
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#endif
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} FILINFO;
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/* Format parameter structure (MKFS_PARM) */
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typedef struct {
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BYTE fmt; /* Format option (FM_FAT, FM_FAT32, FM_EXFAT and FM_SFD) */
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BYTE n_fat; /* Number of FATs */
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UINT align; /* Data area alignment (sector) */
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UINT n_root; /* Number of root directory entries */
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DWORD au_size; /* Cluster size (byte) */
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} MKFS_PARM;
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/* File function return code (FRESULT) */
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typedef enum {
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FR_OK = 0, /* (0) Succeeded */
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FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
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FR_INT_ERR, /* (2) Assertion failed */
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FR_NOT_READY, /* (3) The physical drive cannot work */
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FR_NO_FILE, /* (4) Could not find the file */
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FR_NO_PATH, /* (5) Could not find the path */
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FR_INVALID_NAME, /* (6) The path name format is invalid */
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FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
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FR_EXIST, /* (8) Access denied due to prohibited access */
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FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
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FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
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FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
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FR_NOT_ENABLED, /* (12) The volume has no work area */
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FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
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FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any problem */
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FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
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FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
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FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
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FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > FF_FS_LOCK */
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FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
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} FRESULT;
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/*--------------------------------------------------------------*/
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/* FatFs Module Application Interface */
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/*--------------------------------------------------------------*/
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FRESULT f_open (FIL* fp, const TCHAR* path, BYTE mode); /* Open or create a file */
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FRESULT f_close (FIL* fp); /* Close an open file object */
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FRESULT f_read (FIL* fp, void* buff, UINT btr, UINT* br); /* Read data from the file */
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FRESULT f_write (FIL* fp, const void* buff, UINT btw, UINT* bw); /* Write data to the file */
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FRESULT f_lseek (FIL* fp, FSIZE_t ofs); /* Move file pointer of the file object */
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FRESULT f_truncate (FIL* fp); /* Truncate the file */
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FRESULT f_sync (FIL* fp); /* Flush cached data of the writing file */
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FRESULT f_opendir (DIR* dp, const TCHAR* path); /* Open a directory */
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FRESULT f_closedir (DIR* dp); /* Close an open directory */
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FRESULT f_readdir (DIR* dp, FILINFO* fno); /* Read a directory item */
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FRESULT f_findfirst (DIR* dp, FILINFO* fno, const TCHAR* path, const TCHAR* pattern); /* Find first file */
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FRESULT f_findnext (DIR* dp, FILINFO* fno); /* Find next file */
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FRESULT f_mkdir (const TCHAR* path); /* Create a sub directory */
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FRESULT f_unlink (const TCHAR* path); /* Delete an existing file or directory */
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FRESULT f_rename (const TCHAR* path_old, const TCHAR* path_new); /* Rename/Move a file or directory */
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FRESULT f_stat (const TCHAR* path, FILINFO* fno); /* Get file status */
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FRESULT f_chmod (const TCHAR* path, BYTE attr, BYTE mask); /* Change attribute of a file/dir */
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FRESULT f_utime (const TCHAR* path, const FILINFO* fno); /* Change timestamp of a file/dir */
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FRESULT f_chdir (const TCHAR* path); /* Change current directory */
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FRESULT f_chdrive (const TCHAR* path); /* Change current drive */
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FRESULT f_getcwd (TCHAR* buff, UINT len); /* Get current directory */
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FRESULT f_getfree (const TCHAR* path, DWORD* nclst, FATFS** fatfs); /* Get number of free clusters on the drive */
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FRESULT f_getlabel (const TCHAR* path, TCHAR* label, DWORD* vsn); /* Get volume label */
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FRESULT f_setlabel (const TCHAR* label); /* Set volume label */
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FRESULT f_forward (FIL* fp, UINT(*func)(const BYTE*,UINT), UINT btf, UINT* bf); /* Forward data to the stream */
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FRESULT f_expand (FIL* fp, FSIZE_t fsz, BYTE opt); /* Allocate a contiguous block to the file */
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FRESULT f_mount (FATFS* fs, const TCHAR* path, BYTE opt); /* Mount/Unmount a logical drive */
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FRESULT f_mkfs (const TCHAR* path, const MKFS_PARM* opt, void* work, UINT len); /* Create a FAT volume */
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FRESULT f_fdisk (BYTE pdrv, const LBA_t ptbl[], void* work); /* Divide a physical drive into some partitions */
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FRESULT f_setcp (WORD cp); /* Set current code page */
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int f_putc (TCHAR c, FIL* fp); /* Put a character to the file */
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int f_puts (const TCHAR* str, FIL* cp); /* Put a string to the file */
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int f_printf (FIL* fp, const TCHAR* str, ...); /* Put a formatted string to the file */
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TCHAR* f_gets (TCHAR* buff, int len, FIL* fp); /* Get a string from the file */
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/* Some API fucntions are implemented as macro */
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#define f_eof(fp) ((int)((fp)->fptr == (fp)->obj.objsize))
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#define f_error(fp) ((fp)->err)
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#define f_tell(fp) ((fp)->fptr)
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#define f_size(fp) ((fp)->obj.objsize)
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#define f_rewind(fp) f_lseek((fp), 0)
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#define f_rewinddir(dp) f_readdir((dp), 0)
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#define f_rmdir(path) f_unlink(path)
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#define f_unmount(path) f_mount(0, path, 0)
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/*--------------------------------------------------------------*/
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/* Additional Functions */
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/*--------------------------------------------------------------*/
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/* RTC function (provided by user) */
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#if !FF_FS_READONLY && !FF_FS_NORTC
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DWORD get_fattime (void); /* Get current time */
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#endif
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/* LFN support functions (defined in ffunicode.c) */
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#if FF_USE_LFN >= 1
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WCHAR ff_oem2uni (WCHAR oem, WORD cp); /* OEM code to Unicode conversion */
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WCHAR ff_uni2oem (DWORD uni, WORD cp); /* Unicode to OEM code conversion */
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DWORD ff_wtoupper (DWORD uni); /* Unicode upper-case conversion */
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#endif
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/* O/S dependent functions (samples available in ffsystem.c) */
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#if FF_USE_LFN == 3 /* Dynamic memory allocation */
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void* ff_memalloc (UINT msize); /* Allocate memory block */
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void ff_memfree (void* mblock); /* Free memory block */
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#endif
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#if FF_FS_REENTRANT /* Sync functions */
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int ff_mutex_create (int vol); /* Create a sync object */
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void ff_mutex_delete (int vol); /* Delete a sync object */
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int ff_mutex_take (int vol); /* Lock sync object */
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void ff_mutex_give (int vol); /* Unlock sync object */
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#endif
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/*--------------------------------------------------------------*/
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/* Flags and Offset Address */
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/*--------------------------------------------------------------*/
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/* File access mode and open method flags (3rd argument of f_open) */
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#define FA_READ 0x01
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#define FA_WRITE 0x02
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#define FA_OPEN_EXISTING 0x00
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#define FA_CREATE_NEW 0x04
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#define FA_CREATE_ALWAYS 0x08
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#define FA_OPEN_ALWAYS 0x10
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#define FA_OPEN_APPEND 0x30
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/* Fast seek controls (2nd argument of f_lseek) */
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#define CREATE_LINKMAP ((FSIZE_t)0 - 1)
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/* Format options (2nd argument of f_mkfs) */
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#define FM_FAT 0x01
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#define FM_FAT32 0x02
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#define FM_EXFAT 0x04
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#define FM_ANY 0x07
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#define FM_SFD 0x08
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/* Filesystem type (FATFS.fs_type) */
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#define FS_FAT12 1
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#define FS_FAT16 2
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#define FS_FAT32 3
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#define FS_EXFAT 4
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/* File attribute bits for directory entry (FILINFO.fattrib) */
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#define AM_RDO 0x01 /* Read only */
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#define AM_HID 0x02 /* Hidden */
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#define AM_SYS 0x04 /* System */
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#define AM_DIR 0x10 /* Directory */
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#define AM_ARC 0x20 /* Archive */
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#ifdef __cplusplus
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}
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#endif
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#endif /* FF_DEFINED */
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