Thomas Hamilton
SD Card Interface class. Log raw data bytes to memory addresses of your choice, or format the card and use the FAT file system to write files.
Revision 1:94c648931f84, committed 2010-08-07
- Comitter:
- Blaze513
- Date:
- Sat Aug 07 18:32:30 2010 +0000
- Parent:
- 0:f3870f76a890
- Child:
- 2:716abfa4a4d0
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Core/diskio.c Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,136 @@
+/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
+/*-----------------------------------------------------------------------*/
+/* This is a stub disk I/O module that acts as front end of the existing */
+/* disk I/O modules and attach it to FatFs module with common interface. */
+/*-----------------------------------------------------------------------*/
+
+#include "diskio.h"
+
+DSTATUS disk_initialize(BYTE drv)
+{
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_initialize();
+ }
+ else
+ {
+ return STA_NOINIT;
+ }
+}
+
+DSTATUS disk_status(BYTE drv)
+{
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ return (DSTATUS)FATFileSystem::DriveArray[drv]->disk_status();
+ }
+ else
+ {
+ return STA_NOINIT;
+ }
+}
+
+DRESULT disk_read(BYTE drv, BYTE* buff, DWORD sector, BYTE count)
+{
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_read((unsigned char*)buff,
+ (unsigned long)sector, (unsigned char)count);
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+}
+
+#if _READONLY == 0
+DRESULT disk_write(BYTE drv, const BYTE* buff, DWORD sector, BYTE count)
+{
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_write((const unsigned char*)buff,
+ (unsigned long)sector, (unsigned char)count);
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+}
+#endif
+
+DRESULT disk_ioctl(BYTE drv, BYTE ctrl, void* buff)
+{
+ switch (ctrl)
+ {
+ case CTRL_SYNC:
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ return (DRESULT)FATFileSystem::DriveArray[drv]->disk_sync();
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_SECTOR_SIZE:
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ WORD Result = FATFileSystem::DriveArray[drv]->disk_sector_size();
+ if (Result > 0)
+ {
+ *((WORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_SECTOR_COUNT:
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ DWORD Result = FATFileSystem::DriveArray[drv]->disk_sector_count();
+ if (Result > 0)
+ {
+ *((DWORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ case GET_BLOCK_SIZE:
+ if (FATFileSystem::DriveArray[drv] != NULL)
+ {
+ DWORD Result = FATFileSystem::DriveArray[drv]->disk_block_size();
+ if (Result > 0)
+ {
+ *((DWORD*)buff) = Result;
+ return RES_OK;
+ }
+ else
+ {
+ return RES_ERROR;
+ }
+ }
+ else
+ {
+ return RES_NOTRDY;
+ }
+
+ default:
+ return RES_PARERR;
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Core/diskio.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,55 @@
+/*-----------------------------------------------------------------------
+/ Low level disk interface modlue include file R0.06 (C)ChaN, 2007
+/-----------------------------------------------------------------------*/
+
+#ifndef _DISKIO
+#define _DISKIO
+
+#define _READONLY 0
+#define _USE_IOCTL 1
+
+#include "integer.h"
+#include "FATFileSystem.h"
+#include <stdio.h>
+
+/* Status of Disk Functions */
+typedef BYTE DSTATUS;
+#define STA_NOINIT 0x01 /* Drive not initialized */
+#define STA_NODISK 0x02 /* No medium in the drive */
+#define STA_PROTECT 0x04 /* Write protected */
+/* Results of Disk Functions */
+typedef enum
+{
+ RES_OK = 0, /* 0: Successful */
+ RES_ERROR, /* 1: R/W Error */
+ RES_WRPRT, /* 2: Write Protected */
+ RES_NOTRDY, /* 3: Not Ready */
+ RES_PARERR /* 4: Invalid Parameter */
+} DRESULT;
+
+/* Prototypes for disk control functions */
+DSTATUS disk_initialize (BYTE);
+DSTATUS disk_status (BYTE);
+DRESULT disk_read (BYTE, BYTE*, DWORD, BYTE);
+#if _READONLY == 0
+DRESULT disk_write (BYTE, const BYTE*, DWORD, BYTE);
+#endif
+DRESULT disk_ioctl (BYTE, BYTE, void*);
+/* Command code for disk_ioctrl() */
+#define CTRL_SYNC 0 /* Mandatory for read/write configuration */
+#define GET_SECTOR_COUNT 1 /* Mandatory for only f_mkfs() */
+#define GET_SECTOR_SIZE 2
+#define GET_BLOCK_SIZE 3 /* Mandatory for only f_mkfs() */
+#define CTRL_POWER 4
+#define CTRL_LOCK 5
+#define CTRL_EJECT 6
+#define MMC_GET_TYPE 10 /* MMC/SDC command */
+#define MMC_GET_CSD 11
+#define MMC_GET_CID 12
+#define MMC_GET_OCR 13
+#define MMC_GET_SDSTAT 14
+#define ATA_GET_REV 20 /* ATA/CF command */
+#define ATA_GET_MODEL 21
+#define ATA_GET_SN 22
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Core/ff.c Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,3553 @@
+/*----------------------------------------------------------------------------/
+/ FatFs - FAT file system module R0.08 (C)ChaN, 2010
+/-----------------------------------------------------------------------------/
+/ 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) 2010, 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 products UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/-----------------------------------------------------------------------------/
+/ Feb 26,'06 R0.00 Prototype.
+/
+/ Apr 29,'06 R0.01 First stable version.
+/
+/ Jun 01,'06 R0.02 Added FAT12 support.
+/ Removed unbuffered mode.
+/ Fixed a problem on small (<32M) partition.
+/ Jun 10,'06 R0.02a Added a configuration option (_FS_MINIMUM).
+/
+/ Sep 22,'06 R0.03 Added f_rename().
+/ Changed option _FS_MINIMUM to _FS_MINIMIZE.
+/ Dec 11,'06 R0.03a Improved cluster scan algorithm to write files fast.
+/ Fixed f_mkdir() creates incorrect directory on FAT32.
+/
+/ Feb 04,'07 R0.04 Supported multiple drive system.
+/ Changed some interfaces for multiple drive system.
+/ Changed f_mountdrv() to f_mount().
+/ Added f_mkfs().
+/ Apr 01,'07 R0.04a Supported multiple partitions on a physical drive.
+/ Added a capability of extending file size to f_lseek().
+/ Added minimization level 3.
+/ Fixed an endian sensitive code in f_mkfs().
+/ May 05,'07 R0.04b Added a configuration option _USE_NTFLAG.
+/ Added FSInfo support.
+/ Fixed DBCS name can result FR_INVALID_NAME.
+/ Fixed short seek (<= csize) collapses the file object.
+/
+/ Aug 25,'07 R0.05 Changed arguments of f_read(), f_write() and f_mkfs().
+/ Fixed f_mkfs() on FAT32 creates incorrect FSInfo.
+/ Fixed f_mkdir() on FAT32 creates incorrect directory.
+/ Feb 03,'08 R0.05a Added f_truncate() and f_utime().
+/ Fixed off by one error at FAT sub-type determination.
+/ Fixed btr in f_read() can be mistruncated.
+/ Fixed cached sector is not flushed when create and close
+/ without write.
+/
+/ Apr 01,'08 R0.06 Added fputc(), fputs(), fprintf() and fgets().
+/ Improved performance of f_lseek() on moving to the same
+/ or following cluster.
+/
+/ Apr 01,'09 R0.07 Merged Tiny-FatFs as a buffer configuration option.
+/ Added long file name support.
+/ Added multiple code page support.
+/ Added re-entrancy for multitask operation.
+/ Added auto cluster size selection to f_mkfs().
+/ Added rewind option to f_readdir().
+/ Changed result code of critical errors.
+/ Renamed string functions to avoid name collision.
+/ Apr 14,'09 R0.07a Separated out OS dependent code on reentrant cfg.
+/ Added multiple sector size support.
+/ Jun 21,'09 R0.07c Fixed f_unlink() can return FR_OK on error.
+/ Fixed wrong cache control in f_lseek().
+/ Added relative path feature.
+/ Added f_chdir() and f_chdrive().
+/ Added proper case conversion to extended char.
+/ Nov 03,'09 R0.07e Separated out configuration options from ff.h to ffconf.h.
+/ Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+/ Fixed name matching error on the 13 char boundary.
+/ Added a configuration option, _LFN_UNICODE.
+/ Changed f_readdir() to return the SFN with always upper
+/ case on non-LFN cfg.
+/
+/ May 15,'10 R0.08 Added a memory configuration option. (_USE_LFN)
+/ Added file lock feature. (_FS_SHARE)
+/ Added fast seek feature. (_USE_FASTSEEK)
+/ Changed some types on the API, XCHAR->TCHAR.
+/ Changed fname member in the FILINFO structure on Unicode cfg.
+/ String functions support UTF-8 encoding files on Unicode cfg.
+/---------------------------------------------------------------------------*/
+
+#include "ff.h" /* FatFs configurations and declarations */
+#include "diskio.h" /* Declarations of low level disk I/O functions */
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#if _FATFS != 8085
+#error Wrong include file (ff.h).
+#endif
+
+
+/* FAT sub-type boundaries */
+/* Note that the FAT spec by Microsoft says 4085 but Windows works with 4087! */
+#define MIN_FAT16 4086 /* Minimum number of clusters for FAT16 */
+#define MIN_FAT32 65526 /* Minimum number of clusters for FAT32 */
+
+
+/* Definitions corresponds to multiple sector size */
+#if _MAX_SS == 512 /* Single sector size */
+#define SS(fs) 512U
+#elif _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096 /* Multiple sector size */
+#define SS(fs) ((fs)->ssize)
+#else
+#error Wrong sector size.
+#endif
+
+
+/* Reentrancy related */
+#if _FS_REENTRANT
+#if _USE_LFN == 1
+#error Static LFN work area must not be used in re-entrant configuration.
+#endif
+#define ENTER_FF(fs) { if (!lock_fs(fs)) return FR_TIMEOUT; }
+#define LEAVE_FF(fs, res) { unlock_fs(fs, res); return res; }
+
+#else
+#define ENTER_FF(fs)
+#define LEAVE_FF(fs, res) return res
+
+#endif
+
+#define ABORT(fs, res) { fp->flag |= FA__ERROR; LEAVE_FF(fs, res); }
+
+
+/* Character code support macros */
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+#define IsDigit(c) (((c)>='0')&&((c)<='9'))
+
+#if _DF1S /* Code page is DBCS */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* Code page is SBCS */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
+
+/* Name status flags */
+#define NS 11 /* Offset of name status byte */
+#define NS_LOSS 0x01 /* Out of 8.3 format */
+#define NS_LFN 0x02 /* Force to create LFN entry */
+#define NS_LAST 0x04 /* Last segment */
+#define NS_BODY 0x08 /* Lower case flag (body) */
+#define NS_EXT 0x10 /* Lower case flag (ext) */
+#define NS_DOT 0x20 /* Dot entry */
+
+
+
+/*------------------------------------------------------------*/
+/* Work area */
+
+#if !_DRIVES
+#error Number of drives must not be 0.
+#endif
+static
+WORD Fsid; /* File system mount ID */
+static
+FATFS *FatFs[_DRIVES]; /* Pointer to the file system objects (logical drives) */
+
+#if _FS_RPATH
+static
+BYTE Drive; /* Current drive */
+#endif
+
+
+#if _USE_LFN == 0 /* No LFN */
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) (dobj).fn = sfn
+#define FREE_BUF()
+
+#elif _USE_LFN == 1 /* LFN with static LFN working buffer */
+static WCHAR LfnBuf[_MAX_LFN + 1];
+#define DEF_NAMEBUF BYTE sfn[12]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = LfnBuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 2 /* LFN with dynamic LFN working buffer on the stack */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR lbuf[_MAX_LFN + 1]
+#define INIT_BUF(dobj) { (dobj).fn = sfn; (dobj).lfn = lbuf; }
+#define FREE_BUF()
+
+#elif _USE_LFN == 3 /* LFN with dynamic LFN working buffer on the heap */
+#define DEF_NAMEBUF BYTE sfn[12]; WCHAR *lfn
+#define INIT_BUF(dobj) { lfn = ff_memalloc((_MAX_LFN + 1) * 2); \
+ if (!lfn) LEAVE_FF((dobj).fs, FR_NOT_ENOUGH_CORE); \
+ (dobj).lfn = lfn; (dobj).fn = sfn; }
+#define FREE_BUF() ff_memfree(lfn)
+
+#else
+#error Wrong LFN configuration.
+#endif
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, int cnt) {
+ BYTE *d = (BYTE*)dst;
+ const BYTE *s = (const BYTE*)src;
+
+#if _WORD_ACCESS == 1
+ while (cnt >= sizeof(int)) {
+ *(int*)d = *(int*)s;
+ d += sizeof(int); s += sizeof(int);
+ cnt -= sizeof(int);
+ }
+#endif
+ while (cnt--)
+ *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, int cnt) {
+ BYTE *d = (BYTE*)dst;
+
+ while (cnt--)
+ *d++ = (BYTE)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, int cnt) {
+ const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
+ int r = 0;
+
+ while (cnt-- && (r = *d++ - *s++) == 0) ;
+ return r;
+}
+
+/* Check if chr is contained in the string */
+static
+int chk_chr (const char* str, int chr) {
+ while (*str && *str != chr) str++;
+ return *str;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Request/Release grant to access the volume */
+/*-----------------------------------------------------------------------*/
+#if _FS_REENTRANT
+
+static
+int lock_fs (
+ FATFS *fs /* File system object */
+)
+{
+ return ff_req_grant(fs->sobj);
+}
+
+
+static
+void unlock_fs (
+ FATFS *fs, /* File system object */
+ FRESULT res /* Result code to be returned */
+)
+{
+ if (res != FR_NOT_ENABLED &&
+ res != FR_INVALID_DRIVE &&
+ res != FR_INVALID_OBJECT &&
+ res != FR_TIMEOUT) {
+ ff_rel_grant(fs->sobj);
+ }
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* File shareing control functions */
+/*-----------------------------------------------------------------------*/
+#if _FS_SHARE
+
+static
+FRESULT chk_lock ( /* Check if the file can be accessed */
+ FAT_DIR* dj, /* Directory object pointing the file to be checked */
+ int acc /* Desired access (0:Read, 1:Write, 2:Delete/Rename) */
+)
+{
+ UINT i, be;
+
+ /* Search file semaphore table */
+ for (i = be = 0; i < _FS_SHARE; i++) {
+ if (dj->fs->flsem[i].ctr) { /* Existing entry */
+ if (dj->fs->flsem[i].clu == dj->sclust && /* The file is found (identified with its location) */
+ dj->fs->flsem[i].idx == dj->index) break;
+ } else { /* Blank entry */
+ be++;
+ }
+ }
+ if (i == _FS_SHARE) /* The file has not been opened */
+ return (be || acc != 2) ? FR_OK : FR_TOO_MANY_OPEN_FILES; /* Is there a blank entry for new file? */
+
+ /* The file has been opened. Reject any open against writing file and all write mode open */
+ return (acc || dj->fs->flsem[i].ctr == 0x100) ? FR_LOCKED : FR_OK;
+}
+
+
+static
+int enq_lock ( /* Check if an entry is available for a new file */
+ FATFS* fs /* File system object */
+)
+{
+ UINT i;
+
+ for (i = 0; i < _FS_SHARE && fs->flsem[i].ctr; i++) ;
+ return (i == _FS_SHARE) ? 0 : 1;
+}
+
+
+static
+UINT inc_lock ( /* Increment file open counter and returns its index (0:int error) */
+ FAT_DIR* dj, /* Directory object pointing the file to register or increment */
+ int acc /* Desired access mode (0:Read, !0:Write) */
+)
+{
+ UINT i;
+
+
+ for (i = 0; i < _FS_SHARE; i++) { /* Find the file */
+ if (dj->fs->flsem[i].ctr &&
+ dj->fs->flsem[i].clu == dj->sclust &&
+ dj->fs->flsem[i].idx == dj->index) break;
+ }
+
+ if (i == _FS_SHARE) { /* Not opened. Register it as new. */
+ for (i = 0; i < _FS_SHARE && dj->fs->flsem[i].ctr; i++) ;
+ if (i == _FS_SHARE) return 0; /* No space to register (int err) */
+ dj->fs->flsem[i].clu = dj->sclust;
+ dj->fs->flsem[i].idx = dj->index;
+ }
+
+ if (acc && dj->fs->flsem[i].ctr) return 0; /* Access violation (int err) */
+
+ dj->fs->flsem[i].ctr = acc ? 0x100 : dj->fs->flsem[i].ctr + 1; /* Set semaphore value */
+
+ return i + 1;
+}
+
+
+static
+FRESULT dec_lock ( /* Decrement file open counter */
+ FATFS* fs, /* File system object */
+ UINT i /* Semaphore index */
+)
+{
+ WORD n;
+ FRESULT res;
+
+
+ if (--i < _FS_SHARE) {
+ n = fs->flsem[i].ctr;
+ if (n >= 0x100) n = 0;
+ if (n) n--;
+ fs->flsem[i].ctr = n;
+ res = FR_OK;
+ } else {
+ res = FR_INT_ERR;
+ }
+ return res;
+}
+
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change window offset */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT move_window (
+ FATFS *fs, /* File system object */
+ DWORD sector /* Sector number to make appearance in the fs->win[] */
+) /* Move to zero only writes back dirty window */
+{
+ DWORD wsect;
+
+
+ wsect = fs->winsect;
+ if (wsect != sector) { /* Changed current window */
+#if !_FS_READONLY
+ if (fs->wflag) { /* Write back dirty window if needed */
+ if (disk_write(fs->drv, fs->win, wsect, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->wflag = 0;
+ if (wsect < (fs->fatbase + fs->fsize)) { /* In FAT area */
+ BYTE nf;
+ for (nf = fs->n_fats; nf > 1; nf--) { /* Reflect the change to all FAT copies */
+ wsect += fs->fsize;
+ disk_write(fs->drv, fs->win, wsect, 1);
+ }
+ }
+ }
+#endif
+ if (sector) {
+ if (disk_read(fs->drv, fs->win, sector, 1) != RES_OK)
+ return FR_DISK_ERR;
+ fs->winsect = sector;
+ }
+ }
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Clean-up cached data */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT sync ( /* FR_OK: successful, FR_DISK_ERR: failed */
+ FATFS *fs /* File system object */
+)
+{
+ FRESULT res;
+
+
+ res = move_window(fs, 0);
+ if (res == FR_OK) {
+ /* Update FSInfo sector if needed */
+ if (fs->fs_type == FS_FAT32 && fs->fsi_flag) {
+ fs->winsect = 0;
+ mem_set(fs->win, 0, 512);
+ ST_WORD(fs->win+BS_55AA, 0xAA55);
+ ST_DWORD(fs->win+FSI_LeadSig, 0x41615252);
+ ST_DWORD(fs->win+FSI_StrucSig, 0x61417272);
+ ST_DWORD(fs->win+FSI_Free_Count, fs->free_clust);
+ ST_DWORD(fs->win+FSI_Nxt_Free, fs->last_clust);
+ disk_write(fs->drv, fs->win, fs->fsi_sector, 1);
+ fs->fsi_flag = 0;
+ }
+ /* Make sure that no pending write process in the physical drive */
+ if (disk_ioctl(fs->drv, CTRL_SYNC, (void*)0) != RES_OK)
+ res = FR_DISK_ERR;
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Read value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, Else:Cluster status */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to get the link information */
+)
+{
+ UINT wc, bc;
+ BYTE *p;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) /* Chack range */
+ return 1;
+
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = (UINT)clst; bc += bc / 2;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc = fs->win[bc % SS(fs)]; bc++;
+ if (move_window(fs, fs->fatbase + (bc / SS(fs)))) break;
+ wc |= fs->win[bc % SS(fs)] << 8;
+ return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+
+ case FS_FAT16 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)))) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ return LD_WORD(p);
+
+ case FS_FAT32 :
+ if (move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)))) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ return LD_DWORD(p) & 0x0FFFFFFF;
+ }
+
+ return 0xFFFFFFFF; /* An error occurred at the disk I/O layer */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT access - Change value of a FAT entry */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+
+FRESULT put_fat (
+ FATFS *fs, /* File system object */
+ DWORD clst, /* Cluster# to be changed in range of 2 to fs->n_fatent - 1 */
+ DWORD val /* New value to mark the cluster */
+)
+{
+ UINT bc;
+ BYTE *p;
+ FRESULT res;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ switch (fs->fs_type) {
+ case FS_FAT12 :
+ bc = clst; bc += bc / 2;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+ bc++;
+ fs->wflag = 1;
+ res = move_window(fs, fs->fatbase + (bc / SS(fs)));
+ if (res != FR_OK) break;
+ p = &fs->win[bc % SS(fs)];
+ *p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+ break;
+
+ case FS_FAT16 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 2)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 2 % SS(fs)];
+ ST_WORD(p, (WORD)val);
+ break;
+
+ case FS_FAT32 :
+ res = move_window(fs, fs->fatbase + (clst / (SS(fs) / 4)));
+ if (res != FR_OK) break;
+ p = &fs->win[clst * 4 % SS(fs)];
+ val |= LD_DWORD(p) & 0xF0000000;
+ ST_DWORD(p, val);
+ break;
+
+ default :
+ res = FR_INT_ERR;
+ }
+ fs->wflag = 1;
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Remove a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain (
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to remove a chain from */
+)
+{
+ FRESULT res;
+ DWORD nxt;
+
+
+ if (clst < 2 || clst >= fs->n_fatent) { /* Check range */
+ res = FR_INT_ERR;
+
+ } else {
+ res = FR_OK;
+ while (clst < fs->n_fatent) { /* Not a last link? */
+ nxt = get_fat(fs, clst); /* Get cluster status */
+ if (nxt == 0) break; /* Empty cluster? */
+ if (nxt == 1) { res = FR_INT_ERR; break; } /* Internal error? */
+ if (nxt == 0xFFFFFFFF) { res = FR_DISK_ERR; break; } /* Disk error? */
+ res = put_fat(fs, clst, 0); /* Mark the cluster "empty" */
+ if (res != FR_OK) break;
+ if (fs->free_clust != 0xFFFFFFFF) { /* Update FSInfo */
+ fs->free_clust++;
+ fs->fsi_flag = 1;
+ }
+ clst = nxt; /* Next cluster */
+ }
+ }
+
+ return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* FAT handling - Stretch or Create a cluster chain */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+DWORD create_chain ( /* 0:No free cluster, 1:Internal error, 0xFFFFFFFF:Disk error, >=2:New cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to stretch. 0 means create a new chain. */
+)
+{
+ DWORD cs, ncl, scl;
+
+
+ if (clst == 0) { /* Create a new chain */
+ scl = fs->last_clust; /* Get suggested start point */
+ if (!scl || scl >= fs->n_fatent) scl = 1;
+ }
+ else { /* Stretch the current chain */
+ cs = get_fat(fs, clst); /* Check the cluster status */
+ if (cs < 2) return 1; /* It is an invalid cluster */
+ if (cs < fs->n_fatent) return cs; /* It is already followed by next cluster */
+ scl = clst;
+ }
+
+ ncl = scl; /* Start cluster */
+ for (;;) {
+ ncl++; /* Next cluster */
+ if (ncl >= fs->n_fatent) { /* Wrap around */
+ ncl = 2;
+ if (ncl > scl) return 0; /* No free cluster */
+ }
+ cs = get_fat(fs, ncl); /* Get the cluster status */
+ if (cs == 0) break; /* Found a free cluster */
+ if (cs == 0xFFFFFFFF || cs == 1)/* An error occurred */
+ return cs;
+ if (ncl == scl) return 0; /* No free cluster */
+ }
+
+ if (put_fat(fs, ncl, 0x0FFFFFFF)) /* Mark the new cluster "last link" */
+ return 0xFFFFFFFF;
+ if (clst != 0) { /* Link it to the previous one if needed */
+ if (put_fat(fs, clst, ncl))
+ return 0xFFFFFFFF;
+ }
+
+ fs->last_clust = ncl; /* Update FSINFO */
+ if (fs->free_clust != 0xFFFFFFFF) {
+ fs->free_clust--;
+ fs->fsi_flag = 1;
+ }
+
+ return ncl; /* Return new cluster number */
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get sector# from cluster# */
+/*-----------------------------------------------------------------------*/
+
+
+DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
+ FATFS *fs, /* File system object */
+ DWORD clst /* Cluster# to be converted */
+)
+{
+ clst -= 2;
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
+ return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Set directory index */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_sdi (
+ FAT_DIR *dj, /* Pointer to directory object */
+ WORD idx /* Directory index number */
+)
+{
+ DWORD clst;
+ WORD ic;
+
+
+ dj->index = idx;
+ clst = dj->sclust;
+ if (clst == 1 || clst >= dj->fs->n_fatent) /* Check start cluster range */
+ return FR_INT_ERR;
+ if (!clst && dj->fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
+ clst = dj->fs->dirbase;
+
+ if (clst == 0) { /* Static table */
+ dj->clust = clst;
+ if (idx >= dj->fs->n_rootdir) /* Index is out of range */
+ return FR_INT_ERR;
+ dj->sect = dj->fs->dirbase + idx / (SS(dj->fs) / 32); /* Sector# */
+ }
+ else { /* Dynamic table */
+ ic = SS(dj->fs) / 32 * dj->fs->csize; /* Entries per cluster */
+ while (idx >= ic) { /* Follow cluster chain */
+ clst = get_fat(dj->fs, clst); /* Get next cluster */
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR; /* Disk error */
+ if (clst < 2 || clst >= dj->fs->n_fatent) /* Reached to end of table or int error */
+ return FR_INT_ERR;
+ idx -= ic;
+ }
+ dj->clust = clst;
+ dj->sect = clust2sect(dj->fs, clst) + idx / (SS(dj->fs) / 32); /* Sector# */
+ }
+
+ dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32; /* Ptr to the entry in the sector */
+
+ return FR_OK; /* Seek succeeded */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Move directory index next */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
+ FAT_DIR *dj, /* Pointer to directory object */
+ int stretch /* 0: Do not stretch table, 1: Stretch table if needed */
+)
+{
+ DWORD clst;
+ WORD i;
+
+
+ i = dj->index + 1;
+ if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
+ return FR_NO_FILE;
+
+ if (!(i % (SS(dj->fs) / 32))) { /* Sector changed? */
+ dj->sect++; /* Next sector */
+
+ if (dj->clust == 0) { /* Static table */
+ if (i >= dj->fs->n_rootdir) /* Report EOT when end of table */
+ return FR_NO_FILE;
+ }
+ else { /* Dynamic table */
+ if (((i / (SS(dj->fs) / 32)) & (dj->fs->csize - 1)) == 0) { /* Cluster changed? */
+ clst = get_fat(dj->fs, dj->clust); /* Get next cluster */
+ if (clst <= 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ if (clst >= dj->fs->n_fatent) { /* When it reached end of dynamic table */
+#if !_FS_READONLY
+ BYTE c;
+ if (!stretch) return FR_NO_FILE; /* When do not stretch, report EOT */
+ clst = create_chain(dj->fs, dj->clust); /* Stretch cluster chain */
+ if (clst == 0) return FR_DENIED; /* No free cluster */
+ if (clst == 1) return FR_INT_ERR;
+ if (clst == 0xFFFFFFFF) return FR_DISK_ERR;
+ /* Clean-up stretched table */
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR; /* Flush active window */
+ mem_set(dj->fs->win, 0, SS(dj->fs)); /* Clear window buffer */
+ dj->fs->winsect = clust2sect(dj->fs, clst); /* Cluster start sector */
+ for (c = 0; c < dj->fs->csize; c++) { /* Fill the new cluster with 0 */
+ dj->fs->wflag = 1;
+ if (move_window(dj->fs, 0)) return FR_DISK_ERR;
+ dj->fs->winsect++;
+ }
+ dj->fs->winsect -= c; /* Rewind window address */
+#else
+ return FR_NO_FILE; /* Report EOT */
+#endif
+ }
+ dj->clust = clst; /* Initialize data for new cluster */
+ dj->sect = clust2sect(dj->fs, clst);
+ }
+ }
+ }
+
+ dj->index = i;
+ dj->dir = dj->fs->win + (i % (SS(dj->fs) / 32)) * 32;
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* LFN handling - Test/Pick/Fit an LFN segment from/to directory entry */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+const BYTE LfnOfs[] = {1,3,5,7,9,14,16,18,20,22,24,28,30}; /* Offset of LFN chars in the directory entry */
+
+
+static
+int cmp_lfn ( /* 1:Matched, 0:Not matched */
+ WCHAR *lfnbuf, /* Pointer to the LFN to be compared */
+ BYTE *dir /* Pointer to the directory entry containing a part of LFN */
+)
+{
+ int i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13; /* Get offset in the LFN buffer */
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ wc = ff_wtoupper(uc); /* Convert it to upper case */
+ if (i >= _MAX_LFN || wc != ff_wtoupper(lfnbuf[i++])) /* Compare it */
+ return 0; /* Not matched */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Repeat until all chars in the entry are checked */
+
+ if ((dir[LDIR_Ord] & 0x40) && wc && lfnbuf[i]) /* Last segment matched but different length */
+ return 0;
+
+ return 1; /* The part of LFN matched */
+}
+
+
+
+static
+int pick_lfn ( /* 1:Succeeded, 0:Buffer overflow */
+ WCHAR *lfnbuf, /* Pointer to the Unicode-LFN buffer */
+ BYTE *dir /* Pointer to the directory entry */
+)
+{
+ int i, s;
+ WCHAR wc, uc;
+
+
+ i = ((dir[LDIR_Ord] & 0x3F) - 1) * 13; /* Offset in the LFN buffer */
+
+ s = 0; wc = 1;
+ do {
+ uc = LD_WORD(dir+LfnOfs[s]); /* Pick an LFN character from the entry */
+ if (wc) { /* Last char has not been processed */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i++] = wc = uc; /* Store it */
+ } else {
+ if (uc != 0xFFFF) return 0; /* Check filler */
+ }
+ } while (++s < 13); /* Read all character in the entry */
+
+ if (dir[LDIR_Ord] & 0x40) { /* Put terminator if it is the last LFN part */
+ if (i >= _MAX_LFN) return 0; /* Buffer overflow? */
+ lfnbuf[i] = 0;
+ }
+
+ return 1;
+}
+
+
+#if !_FS_READONLY
+static
+void fit_lfn (
+ const WCHAR *lfnbuf, /* Pointer to the LFN buffer */
+ BYTE *dir, /* Pointer to the directory entry */
+ BYTE ord, /* LFN order (1-20) */
+ BYTE sum /* SFN sum */
+)
+{
+ int i, s;
+ WCHAR wc;
+
+
+ dir[LDIR_Chksum] = sum; /* Set check sum */
+ dir[LDIR_Attr] = AM_LFN; /* Set attribute. LFN entry */
+ dir[LDIR_Type] = 0;
+ ST_WORD(dir+LDIR_FstClusLO, 0);
+
+ i = (ord - 1) * 13; /* Get offset in the LFN buffer */
+ s = wc = 0;
+ do {
+ if (wc != 0xFFFF) wc = lfnbuf[i++]; /* Get an effective char */
+ ST_WORD(dir+LfnOfs[s], wc); /* Put it */
+ if (!wc) wc = 0xFFFF; /* Padding chars following last char */
+ } while (++s < 13);
+ if (wc == 0xFFFF || !lfnbuf[i]) ord |= 0x40; /* Bottom LFN part is the start of LFN sequence */
+ dir[LDIR_Ord] = ord; /* Set the LFN order */
+}
+
+#endif
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create numbered name */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+void gen_numname (
+ BYTE *dst, /* Pointer to generated SFN */
+ const BYTE *src, /* Pointer to source SFN to be modified */
+ const WCHAR *lfn, /* Pointer to LFN */
+ WORD seq /* Sequence number */
+)
+{
+ BYTE ns[8], c;
+ int i, j;
+
+
+ mem_cpy(dst, src, 11);
+
+ if (seq > 5) { /* On many collisions, generate a hash number instead of sequential number */
+ do seq = (seq >> 1) + (seq << 15) + (WORD)*lfn++; while (*lfn);
+ }
+
+ /* itoa */
+ i = 7;
+ do {
+ c = (seq % 16) + '0';
+ if (c > '9') c += 7;
+ ns[i--] = c;
+ seq /= 16;
+ } while (seq);
+ ns[i] = '~';
+
+ /* Append the number */
+ for (j = 0; j < i && dst[j] != ' '; j++) {
+ if (IsDBCS1(dst[j])) {
+ if (j == i - 1) break;
+ j++;
+ }
+ }
+ do {
+ dst[j++] = (i < 8) ? ns[i++] : ' ';
+ } while (j < 8);
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Calculate sum of an SFN */
+/*-----------------------------------------------------------------------*/
+#if _USE_LFN
+static
+BYTE sum_sfn (
+ const BYTE *dir /* Ptr to directory entry */
+)
+{
+ BYTE sum = 0;
+ int n = 11;
+
+ do sum = (sum >> 1) + (sum << 7) + *dir++; while (--n);
+ return sum;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Directory handling - Find an object in the directory */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (
+ FAT_DIR *dj /* Pointer to the directory object linked to the file name */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord, sum;
+#endif
+
+ res = dir_sdi(dj, 0); /* Rewind directory object */
+ if (res != FR_OK) return res;
+
+#if _USE_LFN
+ ord = sum = 0xFF;
+#endif
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == 0xE5 || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (dj->lfn) {
+ if (c & 0x40) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= 0xBF; ord = c; /* LFN start order */
+ dj->lfn_idx = dj->index;
+ }
+ /* Check validity of the LFN entry and compare it with given name */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && cmp_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ }
+ } else { /* An SFN entry is found */
+ if (!ord && sum == sum_sfn(dir)) break; /* LFN matched? */
+ ord = 0xFF; dj->lfn_idx = 0xFFFF; /* Reset LFN sequence */
+ if (!(dj->fn[NS] & NS_LOSS) && !mem_cmp(dir, dj->fn, 11)) break; /* SFN matched? */
+ }
+ }
+#else /* Non LFN configuration */
+ if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+FRESULT dir_read (
+ FAT_DIR *dj /* Pointer to the directory object that pointing the entry to be read */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN
+ BYTE a, ord = 0xFF, sum = 0xFF;
+#endif
+
+ res = FR_NO_FILE;
+ while (dj->sect) {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ dir = dj->dir; /* Ptr to the directory entry of current index */
+ c = dir[DIR_Name];
+ if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
+#if _USE_LFN /* LFN configuration */
+ a = dir[DIR_Attr] & AM_MASK;
+ if (c == 0xE5 || (!_FS_RPATH && c == '.') || ((a & AM_VOL) && a != AM_LFN)) { /* An entry without valid data */
+ ord = 0xFF;
+ } else {
+ if (a == AM_LFN) { /* An LFN entry is found */
+ if (c & 0x40) { /* Is it start of LFN sequence? */
+ sum = dir[LDIR_Chksum];
+ c &= 0xBF; ord = c;
+ dj->lfn_idx = dj->index;
+ }
+ /* Check LFN validity and capture it */
+ ord = (c == ord && sum == dir[LDIR_Chksum] && pick_lfn(dj->lfn, dir)) ? ord - 1 : 0xFF;
+ } else { /* An SFN entry is found */
+ if (ord || sum != sum_sfn(dir)) /* Is there a valid LFN? */
+ dj->lfn_idx = 0xFFFF; /* It has no LFN. */
+ break;
+ }
+ }
+#else /* Non LFN configuration */
+ if (c != 0xE5 && (_FS_RPATH || c != '.') && !(dir[DIR_Attr] & AM_VOL)) /* Is it a valid entry? */
+ break;
+#endif
+ res = dir_next(dj, 0); /* Next entry */
+ if (res != FR_OK) break;
+ }
+
+ if (res != FR_OK) dj->sect = 0;
+
+ return res;
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Register an object to the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT dir_register ( /* FR_OK:Successful, FR_DENIED:No free entry or too many SFN collision, FR_DISK_ERR:Disk error */
+ FAT_DIR *dj /* Target directory with object name to be created */
+)
+{
+ FRESULT res;
+ BYTE c, *dir;
+#if _USE_LFN /* LFN configuration */
+ WORD n, ne, is;
+ BYTE sn[12], *fn, sum;
+ WCHAR *lfn;
+
+
+ fn = dj->fn; lfn = dj->lfn;
+ mem_cpy(sn, fn, 12);
+
+ if (_FS_RPATH && (sn[NS] & NS_DOT)) return FR_INVALID_NAME; /* Cannot create dot entry */
+
+ if (sn[NS] & NS_LOSS) { /* When LFN is out of 8.3 format, generate a numbered name */
+ fn[NS] = 0; dj->lfn = 0; /* Find only SFN */
+ for (n = 1; n < 100; n++) {
+ gen_numname(fn, sn, lfn, n); /* Generate a numbered name */
+ res = dir_find(dj); /* Check if the name collides with existing SFN */
+ if (res != FR_OK) break;
+ }
+ if (n == 100) return FR_DENIED; /* Abort if too many collisions */
+ if (res != FR_NO_FILE) return res; /* Abort if the result is other than 'not collided' */
+ fn[NS] = sn[NS]; dj->lfn = lfn;
+ }
+
+ if (sn[NS] & NS_LFN) { /* When LFN is to be created, reserve an SFN + LFN entries. */
+ for (ne = 0; lfn[ne]; ne++) ;
+ ne = (ne + 25) / 13;
+ } else { /* Otherwise reserve only an SFN entry. */
+ ne = 1;
+ }
+
+ /* Reserve contiguous entries */
+ res = dir_sdi(dj, 0);
+ if (res != FR_OK) return res;
+ n = is = 0;
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir; /* Check the entry status */
+ if (c == 0xE5 || c == 0) { /* Is it a blank entry? */
+ if (n == 0) is = dj->index; /* First index of the contiguous entry */
+ if (++n == ne) break; /* A contiguous entry that required count is found */
+ } else {
+ n = 0; /* Not a blank entry. Restart to search */
+ }
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+
+ if (res == FR_OK && ne > 1) { /* Initialize LFN entry if needed */
+ res = dir_sdi(dj, is);
+ if (res == FR_OK) {
+ sum = sum_sfn(dj->fn); /* Sum of the SFN tied to the LFN */
+ ne--;
+ do { /* Store LFN entries in bottom first */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ fit_lfn(dj->lfn, dj->dir, (BYTE)ne, sum);
+ dj->fs->wflag = 1;
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK && --ne);
+ }
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, 0);
+ if (res == FR_OK) {
+ do { /* Find a blank entry for the SFN */
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ c = *dj->dir;
+ if (c == 0xE5 || c == 0) break; /* Is it a blank entry? */
+ res = dir_next(dj, 1); /* Next entry with table stretch */
+ } while (res == FR_OK);
+ }
+#endif
+
+ if (res == FR_OK) { /* Initialize the SFN entry */
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ dir = dj->dir;
+ mem_set(dir, 0, 32); /* Clean the entry */
+ mem_cpy(dir, dj->fn, 11); /* Put SFN */
+#if _USE_LFN
+ dir[DIR_NTres] = *(dj->fn+NS) & (NS_BODY | NS_EXT); /* Put NT flag */
+#endif
+ dj->fs->wflag = 1;
+ }
+ }
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove an object from the directory */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY && !_FS_MINIMIZE
+static
+FRESULT dir_remove ( /* FR_OK: Successful, FR_DISK_ERR: A disk error */
+ FAT_DIR *dj /* Directory object pointing the entry to be removed */
+)
+{
+ FRESULT res;
+#if _USE_LFN /* LFN configuration */
+ WORD i;
+
+ i = dj->index; /* SFN index */
+ res = dir_sdi(dj, (WORD)((dj->lfn_idx == 0xFFFF) ? i : dj->lfn_idx)); /* Goto the SFN or top of the LFN entries */
+ if (res == FR_OK) {
+ do {
+ res = move_window(dj->fs, dj->sect);
+ if (res != FR_OK) break;
+ *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ if (dj->index >= i) break; /* When reached SFN, all entries of the object has been deleted. */
+ res = dir_next(dj, 0); /* Next entry */
+ } while (res == FR_OK);
+ if (res == FR_NO_FILE) res = FR_INT_ERR;
+ }
+
+#else /* Non LFN configuration */
+ res = dir_sdi(dj, dj->index);
+ if (res == FR_OK) {
+ res = move_window(dj->fs, dj->sect);
+ if (res == FR_OK) {
+ *dj->dir = 0xE5; /* Mark the entry "deleted" */
+ dj->fs->wflag = 1;
+ }
+ }
+#endif
+
+ return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Pick a segment and create the object name in directory form */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT create_name (
+ FAT_DIR *dj, /* Pointer to the directory object */
+ const TCHAR **path /* Pointer to pointer to the segment in the path string */
+)
+{
+#ifdef _EXCVT
+ static const BYTE excvt[] = _EXCVT; /* Upper conversion table for extended chars */
+#endif
+
+#if _USE_LFN /* LFN configuration */
+ BYTE b, cf;
+ WCHAR w, *lfn;
+ int i, ni, si, di;
+ const TCHAR *p;
+
+ /* Create LFN in Unicode */
+ si = di = 0;
+ p = *path;
+ lfn = dj->lfn;
+ for (;;) {
+ w = p[si++]; /* Get a character */
+ if (w < ' ' || w == '/' || w == '\\') break; /* Break on end of segment */
+ if (di >= _MAX_LFN) /* Reject too long name */
+ return FR_INVALID_NAME;
+#if !_LFN_UNICODE
+ w &= 0xFF;
+ if (IsDBCS1(w)) { /* If it is a DBC 1st byte */
+ b = p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(b)) /* Reject invalid code for DBC */
+ return FR_INVALID_NAME;
+ w = (w << 8) + b;
+ }
+ w = ff_convert(w, 1); /* Convert OEM to Unicode */
+ if (!w) return FR_INVALID_NAME; /* Reject invalid code */
+#endif
+ if (w < 0x80 && chk_chr("\"*:<>\?|\x7F", w)) /* Reject illegal chars for LFN */
+ return FR_INVALID_NAME;
+ lfn[di++] = w; /* Store the Unicode char */
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ cf = (w < ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+#if _FS_RPATH
+ if ((di == 1 && lfn[di - 1] == '.') || /* Is this a dot entry? */
+ (di == 2 && lfn[di - 1] == '.' && lfn[di - 2] == '.')) {
+ lfn[di] = 0;
+ for (i = 0; i < 11; i++)
+ dj->fn[i] = (i < di) ? '.' : ' ';
+ dj->fn[i] = cf | NS_DOT; /* This is a dot entry */
+ return FR_OK;
+ }
+#endif
+ while (di) { /* Strip trailing spaces and dots */
+ w = lfn[di - 1];
+ if (w != ' ' && w != '.') break;
+ di--;
+ }
+ if (!di) return FR_INVALID_NAME; /* Reject nul string */
+
+ lfn[di] = 0; /* LFN is created */
+
+ /* Create SFN in directory form */
+ mem_set(dj->fn, ' ', 11);
+ for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ; /* Strip leading spaces and dots */
+ if (si) cf |= NS_LOSS | NS_LFN;
+ while (di && lfn[di - 1] != '.') di--; /* Find extension (di<=si: no extension) */
+
+ b = i = 0; ni = 8;
+ for (;;) {
+ w = lfn[si++]; /* Get an LFN char */
+ if (!w) break; /* Break on end of the LFN */
+ if (w == ' ' || (w == '.' && si != di)) { /* Remove spaces and dots */
+ cf |= NS_LOSS | NS_LFN; continue;
+ }
+
+ if (i >= ni || si == di) { /* Extension or end of SFN */
+ if (ni == 11) { /* Long extension */
+ cf |= NS_LOSS | NS_LFN; break;
+ }
+ if (si != di) cf |= NS_LOSS | NS_LFN; /* Out of 8.3 format */
+ if (si > di) break; /* No extension */
+ si = di; i = 8; ni = 11; /* Enter extension section */
+ b <<= 2; continue;
+ }
+
+ if (w >= 0x80) { /* Non ASCII char */
+#ifdef _EXCVT
+ w = ff_convert(w, 0); /* Unicode -> OEM code */
+ if (w) w = excvt[w - 0x80]; /* Convert extended char to upper (SBCS) */
+#else
+ w = ff_convert(ff_wtoupper(w), 0); /* Upper converted Unicode -> OEM code */
+#endif
+ cf |= NS_LFN; /* Force create LFN entry */
+ }
+
+ if (_DF1S && w >= 0x100) { /* Double byte char */
+ if (i >= ni - 1) {
+ cf |= NS_LOSS | NS_LFN; i = ni; continue;
+ }
+ dj->fn[i++] = (BYTE)(w >> 8);
+ } else { /* Single byte char */
+ if (!w || chk_chr("+,;=[]", w)) { /* Replace illegal chars for SFN */
+ w = '_'; cf |= NS_LOSS | NS_LFN; /* Lossy conversion */
+ } else {
+ if (IsUpper(w)) { /* ASCII large capital */
+ b |= 2;
+ } else {
+ if (IsLower(w)) { /* ASCII small capital */
+ b |= 1; w -= 0x20;
+ }
+ }
+ }
+ }
+ dj->fn[i++] = (BYTE)w;
+ }
+
+ if (dj->fn[0] == 0xE5) dj->fn[0] = 0x05; /* If the first char collides with deleted mark, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x0C) == 0x0C || (b & 0x03) == 0x03) /* Create LFN entry when there are composite capitals */
+ cf |= NS_LFN;
+ if (!(cf & NS_LFN)) { /* When LFN is in 8.3 format without extended char, NT flags are created */
+ if ((b & 0x03) == 0x01) cf |= NS_EXT; /* NT flag (Extension has only small capital) */
+ if ((b & 0x0C) == 0x04) cf |= NS_BODY; /* NT flag (Filename has only small capital) */
+ }
+
+ dj->fn[NS] = cf; /* SFN is created */
+
+ return FR_OK;
+
+
+#else /* Non-LFN configuration */
+ BYTE b, c, d, *sfn;
+ int ni, si, i;
+ const char *p;
+
+ /* Create file name in directory form */
+ sfn = dj->fn;
+ mem_set(sfn, ' ', 11);
+ si = i = b = 0; ni = 8;
+ p = *path;
+#if _FS_RPATH
+ if (p[si] == '.') { /* Is this a dot entry? */
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c != '.' || si >= 3) break;
+ sfn[i++] = c;
+ }
+ if (c != '/' && c != '\\' && c > ' ') return FR_INVALID_NAME;
+ *path = &p[si]; /* Return pointer to the next segment */
+ sfn[NS] = (c <= ' ') ? NS_LAST | NS_DOT : NS_DOT; /* Set last segment flag if end of path */
+ return FR_OK;
+ }
+#endif
+ for (;;) {
+ c = (BYTE)p[si++];
+ if (c <= ' ' || c == '/' || c == '\\') break; /* Break on end of segment */
+ if (c == '.' || i >= ni) {
+ if (ni != 8 || c != '.') return FR_INVALID_NAME;
+ i = 8; ni = 11;
+ b <<= 2; continue;
+ }
+ if (c >= 0x80) { /* Extended char */
+#ifdef _EXCVT
+ c = excvt[c - 0x80]; /* Convert extend char (SBCS) */
+#else
+ b |= 3; /* Eliminate NT flag if extended char is exist */
+#if !_DF1S /* ASCII only cfg */
+ return FR_INVALID_NAME;
+#endif
+#endif
+ }
+ if (IsDBCS1(c)) { /* DBC 1st byte? */
+ d = (BYTE)p[si++]; /* Get 2nd byte */
+ if (!IsDBCS2(d) || i >= ni - 1) /* Reject invalid DBC */
+ return FR_INVALID_NAME;
+ sfn[i++] = c;
+ sfn[i++] = d;
+ } else { /* Single byte code */
+ if (chk_chr("\"*+,:<=>\?[]|\x7F", c)) /* Reject illegal chrs for SFN */
+ return FR_INVALID_NAME;
+ if (IsUpper(c)) { /* ASCII large capital? */
+ b |= 2;
+ } else {
+ if (IsLower(c)) { /* ASCII small capital? */
+ b |= 1; c -= 0x20;
+ }
+ }
+ sfn[i++] = c;
+ }
+ }
+ *path = &p[si]; /* Return pointer to the next segment */
+ c = (c <= ' ') ? NS_LAST : 0; /* Set last segment flag if end of path */
+
+ if (!i) return FR_INVALID_NAME; /* Reject nul string */
+ if (sfn[0] == 0xE5) sfn[0] = 0x05; /* When first char collides with 0xE5, replace it with 0x05 */
+
+ if (ni == 8) b <<= 2;
+ if ((b & 0x03) == 0x01) c |= NS_EXT; /* NT flag (Name extension has only small capital) */
+ if ((b & 0x0C) == 0x04) c |= NS_BODY; /* NT flag (Name body has only small capital) */
+
+ sfn[NS] = c; /* Store NT flag, File name is created */
+
+ return FR_OK;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+void get_fileinfo ( /* No return code */
+ FAT_DIR *dj, /* Pointer to the directory object */
+ FILINFO *fno /* Pointer to the file information to be filled */
+)
+{
+ int i;
+ BYTE nt, *dir;
+ TCHAR *p, c;
+
+
+ p = fno->fname;
+ if (dj->sect) {
+ dir = dj->dir;
+ nt = dir[DIR_NTres]; /* NT flag */
+ for (i = 0; i < 8; i++) { /* Copy name body */
+ c = dir[i];
+ if (c == ' ') break;
+ if (c == 0x05) c = (TCHAR)0xE5;
+ if (_USE_LFN && (nt & NS_BODY) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 7 && IsDBCS2(dir[i + 1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ if (dir[8] != ' ') { /* Copy name extension */
+ *p++ = '.';
+ for (i = 8; i < 11; i++) {
+ c = dir[i];
+ if (c == ' ') break;
+ if (_USE_LFN && (nt & NS_EXT) && IsUpper(c)) c += 0x20;
+#if _LFN_UNICODE
+ if (IsDBCS1(c) && i < 10 && IsDBCS2(dir[i + 1]))
+ c = (c << 8) | dir[++i];
+ c = ff_convert(c, 1);
+ if (!c) c = '?';
+#endif
+ *p++ = c;
+ }
+ }
+ fno->fattrib = dir[DIR_Attr]; /* Attribute */
+ fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
+ fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
+ fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
+ }
+ *p = 0;
+
+#if _USE_LFN
+ if (fno->lfname) {
+ TCHAR *tp = fno->lfname;
+ WCHAR w, *lfn;
+
+ i = 0;
+ if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
+ lfn = dj->lfn;
+ while ((w = *lfn++) != 0) { /* Get an LFN char */
+#if !_LFN_UNICODE
+ w = ff_convert(w, 0); /* Unicode -> OEM conversion */
+ if (!w) { i = 0; break; } /* Could not convert, no LFN */
+ if (_DF1S && w >= 0x100) /* Put 1st byte if it is a DBC */
+ tp[i++] = (TCHAR)(w >> 8);
+#endif
+ if (i >= fno->lfsize - 1) { i = 0; break; } /* Buffer overrun, no LFN */
+ tp[i++] = (TCHAR)w;
+ }
+ }
+ tp[i] = 0; /* Terminator */
+ }
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
+ FAT_DIR *dj, /* Directory object to return last directory and found object */
+ const TCHAR *path /* Full-path string to find a file or directory */
+)
+{
+ FRESULT res;
+ BYTE *dir, ns;
+
+
+#if _FS_RPATH
+ if (*path == '/' || *path == '\\') { /* There is a heading separator */
+ path++; dj->sclust = 0; /* Strip it and start from the root dir */
+ } else { /* No heading separator */
+ dj->sclust = dj->fs->cdir; /* Start from the current dir */
+ }
+#else
+ if (*path == '/' || *path == '\\') /* Strip heading separator if exist */
+ path++;
+ dj->sclust = 0; /* Start from the root dir */
+#endif
+
+ if ((UINT)*path < ' ') { /* Nul path means the start directory itself */
+ res = dir_sdi(dj, 0);
+ dj->dir = 0;
+
+ } else { /* Follow path */
+ for (;;) {
+ res = create_name(dj, &path); /* Get a segment */
+ if (res != FR_OK) break;
+ res = dir_find(dj); /* Find it */
+ ns = *(dj->fn+NS);
+ if (res != FR_OK) { /* Failed to find the object */
+ if (res != FR_NO_FILE) break; /* Abort if any hard error occured */
+ /* Object not found */
+ if (_FS_RPATH && (ns & NS_DOT)) { /* If dot entry is not exit */
+ dj->sclust = 0; dj->dir = 0; /* It is the root dir */
+ res = FR_OK;
+ if (!(ns & NS_LAST)) continue;
+ } else { /* Could not find the object */
+ if (!(ns & NS_LAST)) res = FR_NO_PATH;
+ }
+ break;
+ }
+ if (ns & NS_LAST) break; /* Last segment match. Function completed. */
+ dir = dj->dir; /* There is next segment. Follow the sub directory */
+ if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
+ res = FR_NO_PATH; break;
+ }
+ dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ }
+ }
+
+ return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Load boot record and check if it is an FAT boot record */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE check_fs ( /* 0:The FAT BR, 1:Valid BR but not an FAT, 2:Not a BR, 3:Disk error */
+ FATFS *fs, /* File system object */
+ DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
+)
+{
+ if (disk_read(fs->drv, fs->win, sect, 1) != RES_OK) /* Load boot record */
+ return 3;
+ if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55) /* Check record signature (always placed at offset 510 even if the sector size is >512) */
+ return 2;
+
+ if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146) /* Check "FAT" string */
+ return 0;
+ if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)
+ return 0;
+
+ return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Make sure that the file system is valid */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
+ const TCHAR **path, /* Pointer to pointer to the path name (drive number) */
+ FATFS **rfs, /* Pointer to pointer to the found file system object */
+ BYTE chk_wp /* !=0: Check media write protection for write access */
+)
+{
+ BYTE fmt, b, *tbl;
+ UINT vol;
+ DSTATUS stat;
+ DWORD bsect, fasize, tsect, sysect, nclst, szbfat;
+ WORD nrsv;
+ const TCHAR *p = *path;
+ FATFS *fs;
+
+ /* Get logical drive number from the path name */
+ vol = p[0] - '0'; /* Is there a drive number? */
+ if (vol <= 9 && p[1] == ':') { /* Found a drive number, get and strip it */
+ p += 2; *path = p; /* Return pointer to the path name */
+ } else { /* No drive number is given */
+#if _FS_RPATH
+ vol = Drive; /* Use current drive */
+#else
+ vol = 0; /* Use drive 0 */
+#endif
+ }
+
+ /* Check if the logical drive is valid or not */
+ if (vol >= _DRIVES) /* Is the drive number valid? */
+ return FR_INVALID_DRIVE;
+ *rfs = fs = FatFs[vol]; /* Return pointer to the corresponding file system object */
+ if (!fs) return FR_NOT_ENABLED; /* Is the file system object available? */
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (fs->fs_type) { /* If the logical drive has been mounted */
+ stat = disk_status(fs->drv);
+ if (!(stat & STA_NOINIT)) { /* and the physical drive is kept initialized (has not been changed), */
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ return FR_OK; /* The file system object is valid */
+ }
+ }
+
+ /* The logical drive must be mounted. Following code attempts to mount the volume (initialize the file system object) */
+
+ fs->fs_type = 0; /* Clear the file system object */
+ fs->drv = (BYTE)LD2PD(vol); /* Bind the logical drive and a physical drive */
+ stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
+ if (stat & STA_NOINIT) /* Check if the drive is ready */
+ return FR_NOT_READY;
+#if _MAX_SS != 512 /* Get disk sector size if needed */
+ if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_NO_FILESYSTEM;
+#endif
+#if !_FS_READONLY
+ if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
+ return FR_WRITE_PROTECTED;
+#endif
+ /* Search FAT partition on the drive (Supports only generic partitionings, FDISK and SFD) */
+ fmt = check_fs(fs, bsect = 0); /* Check sector 0 if it is a VBR */
+ if (fmt == 1) { /* Not an FAT-VBR, the disk may be partitioned */
+ /* Check the partition listed in top of the partition table */
+ tbl = &fs->win[MBR_Table + LD2PT(vol) * 16]; /* Partition table */
+ if (tbl[4]) { /* Is the partition existing? */
+ bsect = LD_DWORD(&tbl[8]); /* Partition offset in LBA */
+ fmt = check_fs(fs, bsect); /* Check the partition */
+ }
+ }
+ if (fmt == 3) return FR_DISK_ERR;
+ if (fmt) return FR_NO_FILESYSTEM; /* No FAT volume is found */
+
+ /* Following code initializes the file system object */
+
+ if (LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs)) /* (BPB_BytsPerSec must be equal to the physical sector size) */
+ return FR_NO_FILESYSTEM;
+
+ fasize = LD_WORD(fs->win+BPB_FATSz16); /* Number of sectors per FAT */
+ if (!fasize) fasize = LD_DWORD(fs->win+BPB_FATSz32);
+ fs->fsize = fasize;
+
+ fs->n_fats = b = fs->win[BPB_NumFATs]; /* Number of FAT copies */
+ if (b != 1 && b != 2) return FR_NO_FILESYSTEM; /* (Must be 1 or 2) */
+ fasize *= b; /* Number of sectors for FAT area */
+
+ fs->csize = b = fs->win[BPB_SecPerClus]; /* Number of sectors per cluster */
+ if (!b || (b & (b - 1))) return FR_NO_FILESYSTEM; /* (Must be 1,2,4...128) */
+
+ fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt); /* Number of root directory entries */
+ if (fs->n_rootdir % (SS(fs) / 32)) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be sector aligned) */
+
+ tsect = LD_WORD(fs->win+BPB_TotSec16); /* Number of sectors on the volume */
+ if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
+
+ nrsv = LD_WORD(fs->win+BPB_RsvdSecCnt); /* Number of reserved sectors */
+ if (!nrsv) return FR_NO_FILESYSTEM; /* (BPB_RsvdSecCnt must not be 0) */
+
+ /* Determine the FAT sub type */
+ sysect = nrsv + fasize + fs->n_rootdir / (SS(fs) / 32); /* RSV+FAT+DIR */
+ if (tsect < sysect) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ nclst = (tsect - sysect) / fs->csize; /* Number of clusters */
+ if (!nclst) return FR_NO_FILESYSTEM; /* (Invalid volume size) */
+ fmt = FS_FAT12;
+ if (nclst >= MIN_FAT16) fmt = FS_FAT16;
+ if (nclst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Boundaries and Limits */
+ fs->n_fatent = nclst + 2; /* Number of FAT entries */
+ fs->database = bsect + sysect; /* Data start sector */
+ fs->fatbase = bsect + nrsv; /* FAT start sector */
+ if (fmt == FS_FAT32) {
+ if (fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must be 0) */
+ fs->dirbase = LD_DWORD(fs->win+BPB_RootClus); /* Root directory start cluster */
+ szbfat = fs->n_fatent * 4; /* (Required FAT size) */
+ } else {
+ if (!fs->n_rootdir) return FR_NO_FILESYSTEM; /* (BPB_RootEntCnt must not be 0) */
+ fs->dirbase = fs->fatbase + fasize; /* Root directory start sector */
+ szbfat = (fmt == FS_FAT16) ? /* (Required FAT size) */
+ fs->n_fatent * 2 : fs->n_fatent * 3 / 2 + (fs->n_fatent & 1);
+ }
+ if (fs->fsize < (szbfat + (SS(fs) - 1)) / SS(fs)) /* (FAT size must not be less than FAT sectors */
+ return FR_NO_FILESYSTEM;
+
+#if !_FS_READONLY
+ /* Initialize cluster allocation information */
+ fs->free_clust = 0xFFFFFFFF;
+ fs->last_clust = 0;
+
+ /* Get fsinfo if available */
+ if (fmt == FS_FAT32) {
+ fs->fsi_flag = 0;
+ fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
+ if (disk_read(fs->drv, fs->win, fs->fsi_sector, 1) == RES_OK &&
+ LD_WORD(fs->win+BS_55AA) == 0xAA55 &&
+ LD_DWORD(fs->win+FSI_LeadSig) == 0x41615252 &&
+ LD_DWORD(fs->win+FSI_StrucSig) == 0x61417272) {
+ fs->last_clust = LD_DWORD(fs->win+FSI_Nxt_Free);
+ fs->free_clust = LD_DWORD(fs->win+FSI_Free_Count);
+ }
+ }
+#endif
+ fs->fs_type = fmt; /* FAT sub-type */
+ fs->id = ++Fsid; /* File system mount ID */
+ fs->winsect = 0; /* Invalidate sector cache */
+ fs->wflag = 0;
+#if _FS_RPATH
+ fs->cdir = 0; /* Current directory (root dir) */
+#endif
+#if _FS_SHARE /* Clear file lock semaphores */
+ for (vol = 0; vol < _FS_SHARE; vol++)
+ fs->flsem[vol].ctr = 0;
+#endif
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Check if the file/dir object is valid or not */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
+ FATFS *fs, /* Pointer to the file system object */
+ WORD id /* Member id of the target object to be checked */
+)
+{
+ if (!fs || !fs->fs_type || fs->id != id)
+ return FR_INVALID_OBJECT;
+
+ ENTER_FF(fs); /* Lock file system */
+
+ if (disk_status(fs->drv) & STA_NOINIT)
+ return FR_NOT_READY;
+
+ return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+ Public Functions
+
+--------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Logical Drive */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mount (
+ BYTE vol, /* Logical drive number to be mounted/unmounted */
+ FATFS *fs /* Pointer to new file system object (NULL for unmount)*/
+)
+{
+ FATFS *rfs;
+
+
+ if (vol >= _DRIVES) /* Check if the drive number is valid */
+ return FR_INVALID_DRIVE;
+ rfs = FatFs[vol]; /* Get current fs object */
+
+ if (rfs) {
+#if _FS_REENTRANT /* Discard sync object of the current volume */
+ if (!ff_del_syncobj(rfs->sobj)) return FR_INT_ERR;
+#endif
+ rfs->fs_type = 0; /* Clear old fs object */
+ }
+
+ if (fs) {
+ fs->fs_type = 0; /* Clear new fs object */
+#if _FS_REENTRANT /* Create sync object for the new volume */
+ if (!ff_cre_syncobj(vol, &fs->sobj)) return FR_INT_ERR;
+#endif
+ }
+ FatFs[vol] = fs; /* Register new fs object */
+
+ return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Open or Create a File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_open (
+ FAT_FIL *fp, /* Pointer to the blank file object */
+ const TCHAR *path, /* Pointer to the file name */
+ BYTE mode /* Access mode and file open mode flags */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ fp->fs = 0; /* Clear file object */
+
+#if !_FS_READONLY
+ mode &= FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW;
+ res = chk_mounted(&path, &dj.fs, (BYTE)(mode & ~FA_READ));
+#else
+ mode &= FA_READ;
+ res = chk_mounted(&path, &dj.fs, 0);
+#endif
+ INIT_BUF(dj);
+ if (res == FR_OK)
+ res = follow_path(&dj, path); /* Follow the file path */
+ dir = dj.dir;
+
+#if !_FS_READONLY /* R/W configuration */
+ if (res == FR_OK) {
+ if (!dir) /* Current dir itself */
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ else
+ res = chk_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+#endif
+ }
+ /* Create or Open a file */
+ if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+ DWORD dw, cl;
+
+ if (res != FR_OK) { /* No file, create new */
+ if (res == FR_NO_FILE) /* There is no file to open, create a new entry */
+#if _FS_SHARE
+ res = enq_lock(dj.fs) ? dir_register(&dj) : FR_TOO_MANY_OPEN_FILES;
+#else
+ res = dir_register(&dj);
+#endif
+ mode |= FA_CREATE_ALWAYS;
+ dir = dj.dir; /* New entry */
+ }
+ else { /* Any object is already existing */
+ if (mode & FA_CREATE_NEW) { /* Cannot create new */
+ res = FR_EXIST;
+ } else {
+ if (dir[DIR_Attr] & (AM_RDO | AM_DIR)) /* Cannot overwrite it (R/O or DIR) */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK && (mode & FA_CREATE_ALWAYS)) { /* Truncate it if overwrite mode */
+ dw = get_fattime(); /* Created time */
+ ST_DWORD(dir+DIR_CrtTime, dw);
+ dir[DIR_Attr] = 0; /* Reset attribute */
+ ST_DWORD(dir+DIR_FileSize, 0); /* size = 0 */
+ cl = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO); /* Get start cluster */
+ ST_WORD(dir+DIR_FstClusHI, 0); /* cluster = 0 */
+ ST_WORD(dir+DIR_FstClusLO, 0);
+ dj.fs->wflag = 1;
+ if (cl) { /* Remove the cluster chain if exist */
+ dw = dj.fs->winsect;
+ res = remove_chain(dj.fs, cl);
+ if (res == FR_OK) {
+ dj.fs->last_clust = cl - 1; /* Reuse the cluster hole */
+ res = move_window(dj.fs, dw);
+ }
+ }
+ }
+ }
+ else { /* Open an existing file */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (dir[DIR_Attr] & AM_DIR) { /* It is a directory */
+ res = FR_NO_FILE;
+ } else {
+ if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+ res = FR_DENIED;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ if (mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW))
+ mode |= FA__WRITTEN; /* Set file changed flag */
+ fp->dir_sect = dj.fs->winsect; /* Pointer to the directory entry */
+ fp->dir_ptr = dir;
+#if _FS_SHARE
+ fp->lockid = inc_lock(&dj, (mode & ~FA_READ) ? 1 : 0);
+ if (!fp->lockid) res = FR_INT_ERR;
+#endif
+ }
+
+#else /* R/O configuration */
+ if (res == FR_OK) { /* Follow succeeded */
+ if (!dir) { /* Current dir itself */
+ res = FR_INVALID_NAME;
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* It is a directory */
+ res = FR_NO_FILE;
+ }
+ }
+#endif
+ FREE_BUF();
+
+ if (res == FR_OK) {
+ fp->flag = mode; /* File access mode */
+ fp->org_clust = /* File start cluster */
+ ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ fp->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
+ fp->fptr = 0; /* File pointer */
+ fp->dsect = 0;
+#if _USE_FASTSEEK
+ fp->cltbl = 0; /* No cluster link map table */
+#endif
+ fp->fs = dj.fs; fp->id = dj.fs->id; /* Validate file object */
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+ FAT_FIL *fp, /* Pointer to the file object */
+ void *buff, /* Pointer to data buffer */
+ UINT btr, /* Number of bytes to read */
+ UINT *br /* Pointer to number of bytes read */
+)
+{
+ FRESULT res;
+ DWORD clst, sect, remain;
+ UINT rcnt, cc;
+ BYTE csect, *rbuff = (BYTE*)buff;
+
+
+ *br = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr; /* Repeat until all data transferred */
+ rbuff += rcnt, fp->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btr / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Read maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_read(fp->fs->drv, rbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if !_FS_READONLY && _FS_MINIMIZE <= 2 /* Replace one of the read sectors with cached data if it contains a dirty sector */
+#if _FS_TINY
+ if (fp->fs->wflag && fp->fs->winsect - sect < cc)
+ mem_cpy(rbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), fp->fs->win, SS(fp->fs));
+#else
+ if ((fp->flag & FA__DIRTY) && fp->dsect - sect < cc)
+ mem_cpy(rbuff + ((fp->dsect - sect) * SS(fp->fs)), fp->buf, SS(fp->fs));
+#endif
+#endif
+ rcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Write sector I/O buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ rcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Get partial sector data from sector buffer */
+ if (rcnt > btr) rcnt = btr;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#else
+ mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt); /* Pick partial sector */
+#endif
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Write File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_write (
+ FAT_FIL *fp, /* Pointer to the file object */
+ const void *buff, /* Pointer to the data to be written */
+ UINT btw, /* Number of bytes to write */
+ UINT *bw /* Pointer to number of bytes written */
+)
+{
+ FRESULT res;
+ DWORD clst, sect;
+ UINT wcnt, cc;
+ const BYTE *wbuff = (const BYTE*)buff;
+ BYTE csect;
+
+
+ *bw = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+ if (fp->fsize + btw < fp->fsize) btw = 0; /* File size cannot reach 4GB */
+
+ for ( ; btw; /* Repeat until all data transferred */
+ wbuff += wcnt, fp->fptr += wcnt, *bw += wcnt, btw -= wcnt) {
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if (!csect) { /* On the cluster boundary? */
+ if (fp->fptr == 0) { /* On the top of the file? */
+ clst = fp->org_clust; /* Follow from the origin */
+ if (clst == 0) /* When there is no cluster chain, */
+ fp->org_clust = clst = create_chain(fp->fs, 0); /* Create a new cluster chain */
+ } else { /* Middle or end of the file */
+ clst = create_chain(fp->fs, fp->curr_clust); /* Follow or stretch cluster chain */
+ }
+ if (clst == 0) break; /* Could not allocate a new cluster (disk full) */
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+#if _FS_TINY
+ if (fp->fs->winsect == fp->dsect && move_window(fp->fs, 0)) /* Write back data buffer prior to following direct transfer */
+ ABORT(fp->fs, FR_DISK_ERR);
+#else
+ if (fp->flag & FA__DIRTY) { /* Write back data buffer prior to following direct transfer */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ cc = btw / SS(fp->fs); /* When remaining bytes >= sector size, */
+ if (cc) { /* Write maximum contiguous sectors directly */
+ if (csect + cc > fp->fs->csize) /* Clip at cluster boundary */
+ cc = fp->fs->csize - csect;
+ if (disk_write(fp->fs->drv, wbuff, sect, (BYTE)cc) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#if _FS_TINY
+ if (fp->fs->winsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ mem_cpy(fp->fs->win, wbuff + ((fp->fs->winsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->fs->wflag = 0;
+ }
+#else
+ if (fp->dsect - sect < cc) { /* Refill sector cache if it gets dirty by the direct write */
+ mem_cpy(fp->buf, wbuff + ((fp->dsect - sect) * SS(fp->fs)), SS(fp->fs));
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ wcnt = SS(fp->fs) * cc; /* Number of bytes transferred */
+ continue;
+ }
+#if _FS_TINY
+ if (fp->fptr >= fp->fsize) { /* Avoid silly buffer filling at growing edge */
+ if (move_window(fp->fs, 0)) ABORT(fp->fs, FR_DISK_ERR);
+ fp->fs->winsect = sect;
+ }
+#else
+ if (fp->dsect != sect) { /* Fill sector buffer with file data */
+ if (fp->fptr < fp->fsize &&
+ disk_read(fp->fs->drv, fp->buf, sect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ }
+#endif
+ fp->dsect = sect;
+ }
+ wcnt = SS(fp->fs) - (fp->fptr % SS(fp->fs)); /* Put partial sector into file I/O buffer */
+ if (wcnt > btw) wcnt = btw;
+#if _FS_TINY
+ if (move_window(fp->fs, fp->dsect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ mem_cpy(&fp->fs->win[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->fs->wflag = 1;
+#else
+ mem_cpy(&fp->buf[fp->fptr % SS(fp->fs)], wbuff, wcnt); /* Fit partial sector */
+ fp->flag |= FA__DIRTY;
+#endif
+ }
+
+ if (fp->fptr > fp->fsize) fp->fsize = fp->fptr; /* Update file size if needed */
+ fp->flag |= FA__WRITTEN; /* Set file changed flag */
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Synchronize the File Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_sync (
+ FAT_FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD tim;
+ BYTE *dir;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__WRITTEN) { /* Has the file been written? */
+#if !_FS_TINY /* Write-back dirty buffer */
+ if (fp->flag & FA__DIRTY) {
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ LEAVE_FF(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ /* Update the directory entry */
+ res = move_window(fp->fs, fp->dir_sect);
+ if (res == FR_OK) {
+ dir = fp->dir_ptr;
+ dir[DIR_Attr] |= AM_ARC; /* Set archive bit */
+ ST_DWORD(dir+DIR_FileSize, fp->fsize); /* Update file size */
+ ST_WORD(dir+DIR_FstClusLO, fp->org_clust); /* Update start cluster */
+ ST_WORD(dir+DIR_FstClusHI, fp->org_clust >> 16);
+ tim = get_fattime(); /* Update updated time */
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ fp->flag &= ~FA__WRITTEN;
+ fp->fs->wflag = 1;
+ res = sync(fp->fs);
+ }
+ }
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+ FAT_FIL *fp /* Pointer to the file object to be closed */
+)
+{
+ FRESULT res;
+
+#if _FS_READONLY
+ FATFS *fs = fp->fs;
+ res = validate(fs, fp->id);
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ LEAVE_FF(fs, res);
+
+#else
+ res = f_sync(fp); /* Flush cached data */
+#if _FS_SHARE
+ if (res == FR_OK) { /* Decrement open counter */
+#if _FS_REENTRANT
+ res = validate(fp->fs, fp->id);
+ if (res == FR_OK) {
+ res = dec_lock(fp->fs, fp->lockid);
+ unlock_fs(fp->fs, FR_OK);
+ }
+#else
+ res = dec_lock(fp->fs, fp->lockid);
+#endif
+ }
+#endif
+ if (res == FR_OK) fp->fs = 0; /* Discard file object */
+ return res;
+#endif
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Current Drive/Directory */
+/*-----------------------------------------------------------------------*/
+
+#if _FS_RPATH
+
+FRESULT f_chdrive (
+ BYTE drv /* Drive number */
+)
+{
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+
+ Drive = drv;
+
+ return FR_OK;
+}
+
+
+
+
+FRESULT f_chdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the path */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ dir = dj.dir; /* Pointer to the entry */
+ if (!dir) {
+ dj.fs->cdir = dj.sclust; /* Start directory itself */
+ } else {
+ if (dir[DIR_Attr] & AM_DIR) /* Reached to the directory */
+ dj.fs->cdir = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ else
+ res = FR_NO_PATH; /* Reached but a file */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+#endif
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+ FAT_FIL *fp, /* Pointer to the file object */
+ DWORD ofs /* File pointer from top of file */
+)
+{
+ FRESULT res;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check abort flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+
+#if _USE_FASTSEEK
+ if (fp->cltbl) { /* Fast seek */
+ DWORD cl, pcl, ncl, tcl, dsc, tlen, *tbl = fp->cltbl;
+ BYTE csc;
+
+ tlen = *tbl++;
+ if (ofs == CREATE_LINKMAP) { /* Create link map table */
+ cl = fp->org_clust;
+ if (cl) {
+ do {
+ if (tlen < 4) { /* Not enough table items */
+ res = FR_NOT_ENOUGH_CORE; break;
+ }
+ tcl = cl; ncl = 0;
+ do { /* Get a fragment and store the top and length */
+ pcl = cl; ncl++;
+ cl = get_fat(fp->fs, cl);
+ if (cl <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (cl == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ } while (cl == pcl + 1);
+ *tbl++ = ncl; *tbl++ = tcl;
+ tlen -= 2;
+ } while (cl < fp->fs->n_fatent);
+ }
+ *tbl = 0; /* Terminate table */
+
+ } else { /* Fast seek */
+ if (ofs > fp->fsize) /* Clip offset at the file size */
+ ofs = fp->fsize;
+ fp->fptr = ofs; /* Set file pointer */
+ if (ofs) {
+ dsc = (ofs - 1) / SS(fp->fs);
+ cl = dsc / fp->fs->csize;
+ for (;;) {
+ ncl = *tbl++;
+ if (!ncl) ABORT(fp->fs, FR_INT_ERR);
+ if (cl < ncl) break;
+ cl -= ncl; tbl++;
+ }
+ fp->curr_clust = cl + *tbl;
+ csc = (BYTE)(dsc & (fp->fs->csize - 1));
+ dsc = clust2sect(fp->fs, fp->curr_clust);
+ if (!dsc) ABORT(fp->fs, FR_INT_ERR);
+ dsc += csc;
+ if (fp->fptr % SS(fp->fs) && dsc != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, dsc, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = dsc;
+ }
+ }
+ }
+ } else
+#endif
+
+ /* Normal Seek */
+ {
+ DWORD clst, bcs, nsect, ifptr;
+
+ if (ofs > fp->fsize /* In read-only mode, clip offset with the file size */
+#if !_FS_READONLY
+ && !(fp->flag & FA_WRITE)
+#endif
+ ) ofs = fp->fsize;
+
+ ifptr = fp->fptr;
+ fp->fptr = nsect = 0;
+ if (ofs) {
+ bcs = (DWORD)fp->fs->csize * SS(fp->fs); /* Cluster size (byte) */
+ if (ifptr > 0 &&
+ (ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
+ fp->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
+ ofs -= fp->fptr;
+ clst = fp->curr_clust;
+ } else { /* When seek to back cluster, */
+ clst = fp->org_clust; /* start from the first cluster */
+#if !_FS_READONLY
+ if (clst == 0) { /* If no cluster chain, create a new chain */
+ clst = create_chain(fp->fs, 0);
+ if (clst == 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->org_clust = clst;
+ }
+#endif
+ fp->curr_clust = clst;
+ }
+ if (clst != 0) {
+ while (ofs > bcs) { /* Cluster following loop */
+#if !_FS_READONLY
+ if (fp->flag & FA_WRITE) { /* Check if in write mode or not */
+ clst = create_chain(fp->fs, clst); /* Force stretch if in write mode */
+ if (clst == 0) { /* When disk gets full, clip file size */
+ ofs = bcs; break;
+ }
+ } else
+#endif
+ clst = get_fat(fp->fs, clst); /* Follow cluster chain if not in write mode */
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ if (clst <= 1 || clst >= fp->fs->n_fatent) ABORT(fp->fs, FR_INT_ERR);
+ fp->curr_clust = clst;
+ fp->fptr += bcs;
+ ofs -= bcs;
+ }
+ fp->fptr += ofs;
+ if (ofs % SS(fp->fs)) {
+ nsect = clust2sect(fp->fs, clst); /* Current sector */
+ if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+ nsect += ofs / SS(fp->fs);
+ }
+ }
+ }
+ if (fp->fptr % SS(fp->fs) && nsect != fp->dsect) {
+#if !_FS_TINY
+#if !_FS_READONLY
+ if (fp->flag & FA__DIRTY) { /* Flush dirty buffer if needed */
+ if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->flag &= ~FA__DIRTY;
+ }
+#endif
+ if (disk_read(fp->fs->drv, fp->buf, nsect, 1) != RES_OK)
+ ABORT(fp->fs, FR_DISK_ERR);
+#endif
+ fp->dsect = nsect;
+ }
+#if !_FS_READONLY
+ if (fp->fptr > fp->fsize) { /* Set changed flag if the file size is extended */
+ fp->fsize = fp->fptr;
+ fp->flag |= FA__WRITTEN;
+ }
+#endif
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE <= 1
+/*-----------------------------------------------------------------------*/
+/* Create a Directroy Object */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_opendir (
+ FAT_DIR *dj, /* Pointer to directory object to create */
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj->fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(*dj);
+ res = follow_path(dj, path); /* Follow the path to the directory */
+ FREE_BUF();
+ if (res == FR_OK) { /* Follow completed */
+ dir = dj->dir;
+ if (dir) { /* It is not the current dir */
+ if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
+ dj->sclust = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ } else { /* The object is not a directory */
+ res = FR_NO_PATH;
+ }
+ }
+ if (res == FR_OK) {
+ dj->id = dj->fs->id;
+ res = dir_sdi(dj, 0); /* Rewind dir */
+ }
+ }
+ if (res == FR_NO_FILE) res = FR_NO_PATH;
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entry in Sequense */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+ FAT_DIR *dj, /* Pointer to the open directory object */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ DEF_NAMEBUF;
+
+
+ res = validate(dj->fs, dj->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (!fno) {
+ res = dir_sdi(dj, 0);
+ } else {
+ INIT_BUF(*dj);
+ res = dir_read(dj);
+ if (res == FR_NO_FILE) {
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ if (res == FR_OK) { /* A valid entry is found */
+ get_fileinfo(dj, fno); /* Get the object information */
+ res = dir_next(dj, 0); /* Increment index for next */
+ if (res == FR_NO_FILE) {
+ dj->sect = 0;
+ res = FR_OK;
+ }
+ }
+ FREE_BUF();
+ }
+ }
+
+ LEAVE_FF(dj->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+ const TCHAR *path, /* Pointer to the file path */
+ FILINFO *fno /* Pointer to file information to return */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 0);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) { /* Follow completed */
+ if (dj.dir) /* Found an object */
+ get_fileinfo(&dj, fno);
+ else /* It is root dir */
+ res = FR_INVALID_NAME;
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+ const TCHAR *path, /* Pointer to the logical drive number (root dir) */
+ DWORD *nclst, /* Pointer to the variable to return number of free clusters */
+ FATFS **fatfs /* Pointer to pointer to corresponding file system object to return */
+)
+{
+ FRESULT res;
+ DWORD n, clst, sect, stat;
+ UINT i;
+ BYTE fat, *p;
+
+
+ /* Get drive number */
+ res = chk_mounted(&path, fatfs, 0);
+ if (res == FR_OK) {
+ /* If free_clust is valid, return it without full cluster scan */
+ if ((*fatfs)->free_clust <= (*fatfs)->n_fatent - 2) {
+ *nclst = (*fatfs)->free_clust;
+ } else {
+ /* Get number of free clusters */
+ fat = (*fatfs)->fs_type;
+ n = 0;
+ if (fat == FS_FAT12) {
+ clst = 2;
+ do {
+ stat = get_fat(*fatfs, clst);
+ if (stat == 0xFFFFFFFF) { res = FR_DISK_ERR; break; }
+ if (stat == 1) { res = FR_INT_ERR; break; }
+ if (stat == 0) n++;
+ } while (++clst < (*fatfs)->n_fatent);
+ } else {
+ clst = (*fatfs)->n_fatent;
+ sect = (*fatfs)->fatbase;
+ i = 0; p = 0;
+ do {
+ if (!i) {
+ res = move_window(*fatfs, sect++);
+ if (res != FR_OK) break;
+ p = (*fatfs)->win;
+ i = SS(*fatfs);
+ }
+ if (fat == FS_FAT16) {
+ if (LD_WORD(p) == 0) n++;
+ p += 2; i -= 2;
+ } else {
+ if ((LD_DWORD(p) & 0x0FFFFFFF) == 0) n++;
+ p += 4; i -= 4;
+ }
+ } while (--clst);
+ }
+ (*fatfs)->free_clust = n;
+ if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+ *nclst = n;
+ }
+ }
+ LEAVE_FF(*fatfs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Truncate File */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+ FAT_FIL *fp /* Pointer to the file object */
+)
+{
+ FRESULT res;
+ DWORD ncl;
+
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res == FR_OK) {
+ if (fp->flag & FA__ERROR) { /* Check abort flag */
+ res = FR_INT_ERR;
+ } else {
+ if (!(fp->flag & FA_WRITE)) /* Check access mode */
+ res = FR_DENIED;
+ }
+ }
+ if (res == FR_OK) {
+ if (fp->fsize > fp->fptr) {
+ fp->fsize = fp->fptr; /* Set file size to current R/W point */
+ fp->flag |= FA__WRITTEN;
+ if (fp->fptr == 0) { /* When set file size to zero, remove entire cluster chain */
+ res = remove_chain(fp->fs, fp->org_clust);
+ fp->org_clust = 0;
+ } else { /* When truncate a part of the file, remove remaining clusters */
+ ncl = get_fat(fp->fs, fp->curr_clust);
+ res = FR_OK;
+ if (ncl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (ncl == 1) res = FR_INT_ERR;
+ if (res == FR_OK && ncl < fp->fs->n_fatent) {
+ res = put_fat(fp->fs, fp->curr_clust, 0x0FFFFFFF);
+ if (res == FR_OK) res = remove_chain(fp->fs, ncl);
+ }
+ }
+ }
+ if (res != FR_OK) fp->flag |= FA__ERROR;
+ }
+
+ LEAVE_FF(fp->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+ const TCHAR *path /* Pointer to the file or directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj, sdj;
+ BYTE *dir;
+ DWORD dclst;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME; /* Cannot remove dot entry */
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&dj, 2); /* Cannot remove open file */
+#endif
+ if (res == FR_OK) { /* The object is accessible */
+ dir = dj.dir;
+ if (!dir) {
+ res = FR_INVALID_NAME; /* Cannot remove the start directory */
+ } else {
+ if (dir[DIR_Attr] & AM_RDO)
+ res = FR_DENIED; /* Cannot remove R/O object */
+ }
+ dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+ if (res == FR_OK && (dir[DIR_Attr] & AM_DIR)) { /* Is it a sub-dir? */
+ if (dclst < 2) {
+ res = FR_INT_ERR;
+ } else {
+ mem_cpy(&sdj, &dj, sizeof(FAT_DIR)); /* Check if the sub-dir is empty or not */
+ sdj.sclust = dclst;
+ res = dir_sdi(&sdj, 2); /* Exclude dot entries */
+ if (res == FR_OK) {
+ res = dir_read(&sdj);
+ if (res == FR_OK /* Not empty dir */
+#if _FS_RPATH
+ || dclst == sdj.fs->cdir /* Current dir */
+#endif
+ ) res = FR_DENIED;
+ if (res == FR_NO_FILE) res = FR_OK; /* Empty */
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&dj); /* Remove the directory entry */
+ if (res == FR_OK) {
+ if (dclst) /* Remove the cluster chain if exist */
+ res = remove_chain(dj.fs, dclst);
+ if (res == FR_OK) res = sync(dj.fs);
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+ const TCHAR *path /* Pointer to the directory path */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir, n;
+ DWORD dsc, dcl, pcl, tim = get_fattime();
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ if (res == FR_OK) res = FR_EXIST; /* Any object with same name is already existing */
+ if (_FS_RPATH && res == FR_NO_FILE && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_NO_FILE) { /* Can create a new directory */
+ dcl = create_chain(dj.fs, 0); /* Allocate a cluster for the new directory table */
+ res = FR_OK;
+ if (dcl == 0) res = FR_DENIED; /* No space to allocate a new cluster */
+ if (dcl == 1) res = FR_INT_ERR;
+ if (dcl == 0xFFFFFFFF) res = FR_DISK_ERR;
+ if (res == FR_OK) /* Flush FAT */
+ res = move_window(dj.fs, 0);
+ if (res == FR_OK) { /* Initialize the new directory table */
+ dsc = clust2sect(dj.fs, dcl);
+ dir = dj.fs->win;
+ mem_set(dir, 0, SS(dj.fs));
+ mem_set(dir+DIR_Name, ' ', 8+3); /* Create "." entry */
+ dir[DIR_Name] = '.';
+ dir[DIR_Attr] = AM_DIR;
+ ST_DWORD(dir+DIR_WrtTime, tim);
+ ST_WORD(dir+DIR_FstClusLO, dcl);
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ mem_cpy(dir+32, dir, 32); /* Create ".." entry */
+ dir[33] = '.'; pcl = dj.sclust;
+ if (dj.fs->fs_type == FS_FAT32 && pcl == dj.fs->dirbase)
+ pcl = 0;
+ ST_WORD(dir+32+DIR_FstClusLO, pcl);
+ ST_WORD(dir+32+DIR_FstClusHI, pcl >> 16);
+ for (n = dj.fs->csize; n; n--) { /* Write dot entries and clear following sectors */
+ dj.fs->winsect = dsc++;
+ dj.fs->wflag = 1;
+ res = move_window(dj.fs, 0);
+ if (res != FR_OK) break;
+ mem_set(dir, 0, SS(dj.fs));
+ }
+ }
+ if (res == FR_OK) res = dir_register(&dj); /* Register the object to the directoy */
+ if (res != FR_OK) {
+ remove_chain(dj.fs, dcl); /* Could not register, remove cluster chain */
+ } else {
+ dir = dj.dir;
+ dir[DIR_Attr] = AM_DIR; /* Attribute */
+ ST_DWORD(dir+DIR_WrtTime, tim); /* Created time */
+ ST_WORD(dir+DIR_FstClusLO, dcl); /* Table start cluster */
+ ST_WORD(dir+DIR_FstClusHI, dcl >> 16);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ FREE_BUF();
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Attribute */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+ const TCHAR *path, /* Pointer to the file path */
+ BYTE value, /* Attribute bits */
+ BYTE mask /* Attribute mask to change */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Is it a root directory? */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub directory */
+ mask &= AM_RDO|AM_HID|AM_SYS|AM_ARC; /* Valid attribute mask */
+ dir[DIR_Attr] = (value & mask) | (dir[DIR_Attr] & (BYTE)~mask); /* Apply attribute change */
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change Timestamp */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_utime (
+ const TCHAR *path, /* Pointer to the file/directory name */
+ const FILINFO *fno /* Pointer to the time stamp to be set */
+)
+{
+ FRESULT res;
+ FAT_DIR dj;
+ BYTE *dir;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path, &dj.fs, 1);
+ if (res == FR_OK) {
+ INIT_BUF(dj);
+ res = follow_path(&dj, path); /* Follow the file path */
+ FREE_BUF();
+ if (_FS_RPATH && res == FR_OK && (dj.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+ if (res == FR_OK) {
+ dir = dj.dir;
+ if (!dir) { /* Root directory */
+ res = FR_INVALID_NAME;
+ } else { /* File or sub-directory */
+ ST_WORD(dir+DIR_WrtTime, fno->ftime);
+ ST_WORD(dir+DIR_WrtDate, fno->fdate);
+ dj.fs->wflag = 1;
+ res = sync(dj.fs);
+ }
+ }
+ }
+
+ LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Rename File/Directory */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_rename (
+ const TCHAR *path_old, /* Pointer to the old name */
+ const TCHAR *path_new /* Pointer to the new name */
+)
+{
+ FRESULT res;
+ FAT_DIR djo, djn;
+ BYTE buf[21], *dir;
+ DWORD dw;
+ DEF_NAMEBUF;
+
+
+ res = chk_mounted(&path_old, &djo.fs, 1);
+ if (res == FR_OK) {
+ djn.fs = djo.fs;
+ INIT_BUF(djo);
+ res = follow_path(&djo, path_old); /* Check old object */
+ if (_FS_RPATH && res == FR_OK && (djo.fn[NS] & NS_DOT))
+ res = FR_INVALID_NAME;
+#if _FS_SHARE
+ if (res == FR_OK) res = chk_lock(&djo, 2);
+#endif
+ if (res == FR_OK) { /* Old object is found */
+ if (!djo.dir) { /* Is root dir? */
+ res = FR_NO_FILE;
+ } else {
+ mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except for name */
+ mem_cpy(&djn, &djo, sizeof(FAT_DIR)); /* Check new object */
+ res = follow_path(&djn, path_new);
+ if (res == FR_OK) res = FR_EXIST; /* The new object name is already existing */
+ if (res == FR_NO_FILE) { /* Is it a valid path and no name collision? */
+/* Start critical section that any interruption or error can cause cross-link */
+ res = dir_register(&djn); /* Register the new entry */
+ if (res == FR_OK) {
+ dir = djn.dir; /* Copy object information except for name */
+ mem_cpy(dir+13, buf+2, 19);
+ dir[DIR_Attr] = buf[0] | AM_ARC;
+ djo.fs->wflag = 1;
+ if (djo.sclust != djn.sclust && (dir[DIR_Attr] & AM_DIR)) { /* Update .. entry in the directory if needed */
+ dw = clust2sect(djn.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+ if (!dw) {
+ res = FR_INT_ERR;
+ } else {
+ res = move_window(djn.fs, dw);
+ dir = djn.fs->win+32; /* .. entry */
+ if (res == FR_OK && dir[1] == '.') {
+ dw = (djn.fs->fs_type == FS_FAT32 && djn.sclust == djn.fs->dirbase) ? 0 : djn.sclust;
+ ST_WORD(dir+DIR_FstClusLO, dw);
+ ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+ djn.fs->wflag = 1;
+ }
+ }
+ }
+ if (res == FR_OK) {
+ res = dir_remove(&djo); /* Remove old entry */
+ if (res == FR_OK)
+ res = sync(djo.fs);
+ }
+ }
+/* End critical section */
+ }
+ }
+ }
+ FREE_BUF();
+ }
+ LEAVE_FF(djo.fs, res);
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _FS_MINIMIZE == 0 */
+#endif /* _FS_MINIMIZE <= 1 */
+#endif /* _FS_MINIMIZE <= 2 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Forward data to the stream directly (available on only tiny cfg) */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+ FAT_FIL *fp, /* Pointer to the file object */
+ UINT (*func)(const BYTE*,UINT), /* Pointer to the streaming function */
+ UINT btr, /* Number of bytes to forward */
+ UINT *bf /* Pointer to number of bytes forwarded */
+)
+{
+ FRESULT res;
+ DWORD remain, clst, sect;
+ UINT rcnt;
+ BYTE csect;
+
+
+ *bf = 0; /* Initialize byte counter */
+
+ res = validate(fp->fs, fp->id); /* Check validity of the object */
+ if (res != FR_OK) LEAVE_FF(fp->fs, res);
+ if (fp->flag & FA__ERROR) /* Check error flag */
+ LEAVE_FF(fp->fs, FR_INT_ERR);
+ if (!(fp->flag & FA_READ)) /* Check access mode */
+ LEAVE_FF(fp->fs, FR_DENIED);
+
+ remain = fp->fsize - fp->fptr;
+ if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+
+ for ( ; btr && (*func)(0, 0); /* Repeat until all data transferred or stream becomes busy */
+ fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+ csect = (BYTE)(fp->fptr / SS(fp->fs) & (fp->fs->csize - 1)); /* Sector offset in the cluster */
+ if ((fp->fptr % SS(fp->fs)) == 0) { /* On the sector boundary? */
+ if (!csect) { /* On the cluster boundary? */
+ clst = (fp->fptr == 0) ? /* On the top of the file? */
+ fp->org_clust : get_fat(fp->fs, fp->curr_clust);
+ if (clst <= 1) ABORT(fp->fs, FR_INT_ERR);
+ if (clst == 0xFFFFFFFF) ABORT(fp->fs, FR_DISK_ERR);
+ fp->curr_clust = clst; /* Update current cluster */
+ }
+ }
+ sect = clust2sect(fp->fs, fp->curr_clust); /* Get current data sector */
+ if (!sect) ABORT(fp->fs, FR_INT_ERR);
+ sect += csect;
+ if (move_window(fp->fs, sect)) /* Move sector window */
+ ABORT(fp->fs, FR_DISK_ERR);
+ fp->dsect = sect;
+ rcnt = SS(fp->fs) - (WORD)(fp->fptr % SS(fp->fs)); /* Forward data from sector window */
+ if (rcnt > btr) rcnt = btr;
+ rcnt = (*func)(&fp->fs->win[(WORD)fp->fptr % SS(fp->fs)], rcnt);
+ if (!rcnt) ABORT(fp->fs, FR_INT_ERR);
+ }
+
+ LEAVE_FF(fp->fs, FR_OK);
+}
+#endif /* _USE_FORWARD */
+
+
+
+#if _USE_MKFS && !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Create File System on the Drive */
+/*-----------------------------------------------------------------------*/
+#define N_ROOTDIR 512 /* Multiple of 32 */
+#define N_FATS 1 /* 1 or 2 */
+
+
+FRESULT f_mkfs (
+ BYTE drv, /* Logical drive number */
+ BYTE sfd, /* Partitioning rule 0:FDISK, 1:SFD */
+ UINT au /* Allocation unit size [bytes] */
+)
+{
+ static const WORD vst[] = { 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 0};
+ static const WORD cst[] = {32768, 16384, 8192, 4096, 2048, 16384, 8192, 4096, 2048, 1024, 512};
+ BYTE fmt, md, *tbl;
+ DWORD n_clst, vs, n;
+ UINT as, i;
+ DWORD b_vol, b_fat, b_dir, b_data; /* Area offset (LBA) */
+ DWORD n_vol, n_rsv, n_fat, n_dir; /* Area size */
+ FATFS *fs;
+ DSTATUS stat;
+
+
+ /* Check mounted drive and clear work area */
+ if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+ fs = FatFs[drv];
+ if (!fs) return FR_NOT_ENABLED;
+ fs->fs_type = 0;
+ drv = LD2PD(drv);
+
+ /* Get disk statics */
+ stat = disk_initialize(drv);
+ if (stat & STA_NOINIT) return FR_NOT_READY;
+ if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
+#if _MAX_SS != 512 /* Get disk sector size */
+ if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK || SS(fs) > _MAX_SS)
+ return FR_DISK_ERR;
+#endif
+ if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
+ return FR_DISK_ERR;
+ b_vol = (sfd == 1) ? 0 : 63; /* Volume start sector */
+ n_vol -= b_vol;
+ if (au & (au - 1)) au = 0; /* Check validity of the allocation unit size */
+ if (!au) { /* AU auto selection */
+ vs = n_vol / (2000 / (SS(fs) / 512));
+ for (i = 0; vs < vst[i]; i++) ;
+ au = cst[i];
+ }
+ if (_MAX_SS != 512 && au < SS(fs)) au = SS(fs);
+ au /= SS(fs); /* Number of sectors per cluster */
+ if (au == 0) au = 1;
+ if (au > 128) au = 128;
+
+ /* Pre-compute number of clusters and FAT syb-type */
+ n_clst = n_vol / au;
+ fmt = FS_FAT12;
+ if (n_clst >= MIN_FAT16) fmt = FS_FAT16;
+ if (n_clst >= MIN_FAT32) fmt = FS_FAT32;
+
+ /* Determine offset and size of FAT structure */
+ if (fmt == FS_FAT32) {
+ n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+ n_rsv = 32;
+ n_dir = 0;
+ } else {
+ n_fat = (fmt == FS_FAT12) ? (n_clst * 3 + 1) / 2 + 3 : (n_clst * 2) + 4;
+ n_fat = (n_fat + SS(fs) - 1) / SS(fs);
+ n_rsv = 1;
+ n_dir = N_ROOTDIR * 32UL / SS(fs);
+ }
+ b_fat = b_vol + n_rsv; /* FAT area start sector */
+ b_dir = b_fat + n_fat * N_FATS; /* Directory area start sector */
+ b_data = b_dir + n_dir; /* Data area start sector */
+ if (n_vol < b_data + au) return FR_MKFS_ABORTED; /* Too small volume */
+
+ /* Align data start sector to erase block boundary (for flash memory media) */
+ if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_DISK_ERR;
+ if (!n || n > 32768) return FR_MKFS_ABORTED;
+ n = (b_data + n - 1) & ~(n - 1); /* Next nearest boundary from current data start */
+ n = (n - b_data) / N_FATS;
+ if (fmt == FS_FAT32) { /* FAT32: Move FAT start */
+ n_rsv += n;
+ b_fat += n;
+ } else { /* FAT12/16: Expand FAT size */
+ n_fat += n;
+ }
+ /* b_dir and b_data are no longer used below */
+
+ /* Determine number of cluster and final check of validity of the FAT sub-type */
+ n_clst = (n_vol - n_rsv - n_fat * N_FATS - n_dir) / au;
+ if ( (fmt == FS_FAT16 && n_clst < MIN_FAT16)
+ || (fmt == FS_FAT32 && n_clst < MIN_FAT32))
+ return FR_MKFS_ABORTED;
+
+ /* Create partition table if required */
+ if (sfd == 1) {
+ md = 0xF0;
+ } else {
+ DWORD n_disk = b_vol + n_vol;
+
+ mem_set(fs->win, 0, SS(fs));
+ tbl = fs->win+MBR_Table;
+ ST_DWORD(tbl, 0x00010180); /* Partition start in CHS */
+ if (n_disk < 63UL * 255 * 1024) { /* Partition end in CHS */
+ n_disk = n_disk / 63 / 255;
+ tbl[7] = (BYTE)n_disk;
+ tbl[6] = (BYTE)((n_disk >> 2) | 63);
+ } else {
+ ST_WORD(&tbl[6], 0xFFFF);
+ }
+ tbl[5] = 254;
+ if (fmt != FS_FAT32) /* System ID */
+ tbl[4] = (n_vol < 0x10000) ? 0x04 : 0x06;
+ else
+ tbl[4] = 0x0c;
+ ST_DWORD(tbl+8, 63); /* Partition start in LBA */
+ ST_DWORD(tbl+12, n_vol); /* Partition size in LBA */
+ ST_WORD(tbl+64, 0xAA55); /* Signature */
+ if (disk_write(drv, fs->win, 0, 1) != RES_OK)
+ return FR_DISK_ERR;
+ md = 0xF8;
+ }
+
+ /* Create VBR */
+ tbl = fs->win; /* Clear buffer */
+ mem_set(tbl, 0, SS(fs));
+ ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB); /* Boot code (jmp $, nop) */
+ as = SS(fs); /* Sector size */
+ ST_WORD(tbl+BPB_BytsPerSec, as);
+ tbl[BPB_SecPerClus] = (BYTE)au; /* Sectors per cluster */
+ ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv); /* Reserved sectors */
+ tbl[BPB_NumFATs] = N_FATS; /* Number of FATs */
+ as = (fmt == FS_FAT32) ? 0 : N_ROOTDIR; /* Number of rootdir entries */
+ ST_WORD(tbl+BPB_RootEntCnt, as);
+ if (n_vol < 0x10000) { /* Number of total sectors */
+ ST_WORD(tbl+BPB_TotSec16, n_vol);
+ } else {
+ ST_DWORD(tbl+BPB_TotSec32, n_vol);
+ }
+ tbl[BPB_Media] = md; /* Media descriptor */
+ ST_WORD(tbl+BPB_SecPerTrk, 63); /* Number of sectors per track */
+ ST_WORD(tbl+BPB_NumHeads, 255); /* Number of heads */
+ ST_DWORD(tbl+BPB_HiddSec, b_vol); /* Hidden sectors */
+ n = get_fattime(); /* Use current time as VSN */
+ if (fmt == FS_FAT32) {
+ ST_DWORD(tbl+BS_VolID32, n); /* VSN */
+ ST_DWORD(tbl+BPB_FATSz32, n_fat); /* Number of sectors per FAT */
+ ST_DWORD(tbl+BPB_RootClus, 2); /* Root directory start cluster (2) */
+ ST_WORD(tbl+BPB_FSInfo, 1); /* FSInfo record offset (VBR+1) */
+ ST_WORD(tbl+BPB_BkBootSec, 6); /* Backup boot record offset (VBR+6) */
+ tbl[BS_DrvNum32] = 0x80; /* Drive number */
+ tbl[BS_BootSig32] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab32, "NO NAME FAT32 ", 19); /* Volume label, FAT signature */
+ } else {
+ ST_DWORD(tbl+BS_VolID, n); /* VSN */
+ ST_WORD(tbl+BPB_FATSz16, n_fat); /* Number of sectors per FAT */
+ tbl[BS_DrvNum] = 0x80; /* Drive number */
+ tbl[BS_BootSig] = 0x29; /* Extended boot signature */
+ mem_cpy(tbl+BS_VolLab, "NO NAME FAT ", 19); /* Volume label, FAT signature */
+ }
+ ST_WORD(tbl+BS_55AA, 0xAA55); /* Signature (Offset is fixed here regardless of sector size) */
+ if (disk_write(drv, tbl, b_vol, 1) != RES_OK) /* Original (VBR) */
+ return FR_DISK_ERR;
+ if (fmt == FS_FAT32) /* Backup (VBR+6) */
+ disk_write(drv, tbl, b_vol + 6, 1);
+
+ /* Initialize FAT area */
+ for (i = 0; i < N_FATS; i++) {
+ mem_set(tbl, 0, SS(fs)); /* 1st sector of the FAT */
+ n = md; /* Media descriptor byte */
+ if (fmt != FS_FAT32) {
+ n |= (fmt == FS_FAT12) ? 0x00FFFF00 : 0xFFFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT12/16) */
+ } else {
+ n |= 0x0FFFFF00;
+ ST_DWORD(tbl+0, n); /* Reserve cluster #0-1 (FAT32) */
+ ST_DWORD(tbl+4, 0x0FFFFFFF);
+ ST_DWORD(tbl+8, 0x0FFFFFFF); /* Reserve cluster #2 for root dir */
+ }
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ mem_set(tbl, 0, SS(fs)); /* Fill following FAT entries with zero */
+ for (n = 1; n < n_fat; n++) { /* This loop may take a time on FAT32 volume due to many single sector write */
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+ }
+
+ /* Initialize root directory */
+ n = (fmt == FS_FAT32) ? as : n_dir;
+ while (n--) {
+ if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+ return FR_DISK_ERR;
+ }
+
+ /* Create FSInfo record if needed */
+ if (fmt == FS_FAT32) {
+ ST_WORD(tbl+BS_55AA, 0xAA55);
+ ST_DWORD(tbl+FSI_LeadSig, 0x41615252);
+ ST_DWORD(tbl+FSI_StrucSig, 0x61417272);
+ ST_DWORD(tbl+FSI_Free_Count, n_clst - 1);
+ ST_DWORD(tbl+FSI_Nxt_Free, 0xFFFFFFFF);
+ disk_write(drv, tbl, b_vol + 1, 1); /* Original (VBR+1) */
+ disk_write(drv, tbl, b_vol + 7, 1); /* Backup (VBR+7) */
+ }
+
+ return (disk_ioctl(drv, CTRL_SYNC, (void*)0) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+#endif /* _USE_MKFS && !_FS_READONLY */
+
+
+
+
+#if _USE_STRFUNC
+/*-----------------------------------------------------------------------*/
+/* Get a string from the file */
+/*-----------------------------------------------------------------------*/
+TCHAR* f_gets (
+ TCHAR* buff, /* Pointer to the string buffer to read */
+ int len, /* Size of string buffer (characters) */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ int n = 0;
+ TCHAR c, *p = buff;
+ BYTE s[2];
+ UINT rc;
+
+
+ while (n < len - 1) { /* Read bytes until buffer gets filled */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break; /* Break on EOF or error */
+ c = s[0];
+#if _LFN_UNICODE /* Read a character in UTF-8 encoding */
+ if (c >= 0x80) {
+ if (c < 0xC0) continue; /* Skip stray trailer */
+ if (c < 0xE0) { /* Two-byte sequense */
+ f_read(fil, s, 1, &rc);
+ if (rc != 1) break;
+ c = ((c & 0x1F) << 6) | (s[0] & 0x3F);
+ if (c < 0x80) c = '?';
+ } else {
+ if (c < 0xF0) { /* Three-byte sequense */
+ f_read(fil, s, 2, &rc);
+ if (rc != 2) break;
+ c = (c << 12) | ((s[0] & 0x3F) << 6) | (s[1] & 0x3F);
+ if (c < 0x800) c = '?';
+ } else { /* Reject four-byte sequense */
+ c = '?';
+ }
+ }
+ }
+#endif
+#if _USE_STRFUNC >= 2
+ if (c == '\r') continue; /* Strip '\r' */
+#endif
+ *p++ = c;
+ n++;
+ if (c == '\n') break; /* Break on EOL */
+ }
+ *p = 0;
+ return n ? buff : 0; /* When no data read (eof or error), return with error. */
+}
+
+
+
+#if !_FS_READONLY
+#include <stdarg.h>
+/*-----------------------------------------------------------------------*/
+/* Put a character to the file */
+/*-----------------------------------------------------------------------*/
+int f_putc (
+ TCHAR c, /* A character to be output */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ UINT bw, btw;
+ BYTE s[3];
+
+
+#if _USE_STRFUNC >= 2
+ if (c == '\n') f_putc ('\r', fil); /* LF -> CRLF conversion */
+#endif
+
+#if _LFN_UNICODE /* Write the character in UTF-8 encoding */
+ if (c < 0x80) { /* 7-bit */
+ s[0] = (BYTE)c;
+ btw = 1;
+ } else {
+ if (c < 0x800) { /* 11-bit */
+ s[0] = (BYTE)(0xC0 | (c >> 6));
+ s[1] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 2;
+ } else { /* 16-bit */
+ s[0] = (BYTE)(0xE0 | (c >> 12));
+ s[1] = (BYTE)(0x80 | ((c >> 6) & 0x3F));
+ s[2] = (BYTE)(0x80 | (c & 0x3F));
+ btw = 3;
+ }
+ }
+#else /* Write the character without conversion */
+ s[0] = (BYTE)c;
+ btw = 1;
+#endif
+ f_write(fil, s, btw, &bw); /* Write the char to the file */
+ return (bw == btw) ? 1 : EOF; /* Return the result */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file */
+/*-----------------------------------------------------------------------*/
+int f_puts (
+ const TCHAR* str, /* Pointer to the string to be output */
+ FAT_FIL* fil /* Pointer to the file object */
+)
+{
+ int n;
+
+
+ for (n = 0; *str; str++, n++) {
+ if (f_putc(*str, fil) == EOF) return EOF;
+ }
+ return n;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a formatted string to the file */
+/*-----------------------------------------------------------------------*/
+int f_printf (
+ FAT_FIL* fil, /* Pointer to the file object */
+ const TCHAR* str, /* Pointer to the format string */
+ ... /* Optional arguments... */
+)
+{
+ va_list arp;
+ BYTE f, r;
+ UINT i, w;
+ ULONG val;
+ TCHAR c, d, s[16];
+ int res, cc;
+
+
+ va_start(arp, str);
+
+ for (cc = res = 0; cc != EOF; res += cc) {
+ c = *str++;
+ if (c == 0) break; /* End of string */
+ if (c != '%') { /* Non escape character */
+ cc = f_putc(c, fil);
+ if (cc != EOF) cc = 1;
+ continue;
+ }
+ w = f = 0;
+ c = *str++;
+ if (c == '0') { /* Flag: '0' padding */
+ f = 1; c = *str++;
+ }
+ while (IsDigit(c)) { /* Precision */
+ w = w * 10 + c - '0';
+ c = *str++;
+ }
+ if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
+ f |= 2; c = *str++;
+ }
+ if (!c) break;
+ d = c;
+ if (IsLower(d)) d -= 0x20;
+ switch (d) { /* Type is... */
+ case 'S' : /* String */
+ cc = f_puts(va_arg(arp, TCHAR*), fil); continue;
+ case 'C' : /* Character */
+ cc = f_putc((TCHAR)va_arg(arp, int), fil); continue;
+ case 'B' : /* Binary */
+ r = 2; break;
+ case 'O' : /* Octal */
+ r = 8; break;
+ case 'D' : /* Signed decimal */
+ case 'U' : /* Unsigned decimal */
+ r = 10; break;
+ case 'X' : /* Hexdecimal */
+ r = 16; break;
+ default: /* Unknown */
+ cc = f_putc(c, fil); continue;
+ }
+
+ /* Get an argument */
+ val = (f & 2) ? va_arg(arp, long) : ((d == 'D') ? (long)va_arg(arp, int) : va_arg(arp, unsigned int));
+ if (d == 'D' && (val & 0x80000000)) {
+ val = 0 - val;
+ f |= 4;
+ }
+ /* Put it in numeral string */
+ i = 0;
+ do {
+ d = (TCHAR)(val % r); val /= r;
+ if (d > 9) {
+ d += 7;
+ if (c == 'x') d += 0x20;
+ }
+ s[i++] = d + '0';
+ } while (val && i < sizeof(s) / sizeof(s[0]));
+ if (f & 4) s[i++] = '-';
+ cc = 0;
+ while (i < w-- && cc != EOF) {
+ cc = f_putc((TCHAR)((f & 1) ? '0' : ' '), fil);
+ res++;
+ }
+ do {
+ cc = f_putc(s[--i], fil);
+ res++;
+ } while (i && cc != EOF);
+ if (cc != EOF) cc = 0;
+ }
+
+ va_end(arp);
+ return (cc == EOF) ? cc : res;
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_STRFUNC */
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Core/ff.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,613 @@
+/*---------------------------------------------------------------------------/
+/ FatFs - FAT file system module include file R0.08 (C)ChaN, 2010
+/----------------------------------------------------------------------------/
+/ 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 trems.
+/
+/ Copyright (C) 2010, 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 8085 /* 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
+
+
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+
+/* Definitions corresponds to volume management */
+
+#if _MULTI_PARTITION /* Multiple partition configuration */
+#define LD2PD(drv) (Drives[drv].pd) /* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt) /* Get partition# */
+typedef struct {
+ BYTE pd; /* Physical drive# */
+ BYTE pt; /* Partition # (0-3) */
+} PARTITION;
+extern const PARTITION Drives[]; /* Logical drive# to physical location conversion table */
+
+#else /* Single partition configuration */
+#define LD2PD(drv) (drv) /* Physical drive# is equal to the logical drive# */
+#define LD2PT(drv) 0 /* Always mounts the 1st partition */
+
+#endif
+
+
+
+/* Type of path name strings on FatFs API */
+
+#if _LFN_UNICODE /* Unicode string */
+#if !_USE_LFN
+#error _LFN_UNICODE must be 0 in 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
+
+
+
+/* Definitions corresponds to file shareing feature */
+
+#if _FS_SHARE
+#if _FS_READONLY
+#error _FS_SHARE must be 0 on R/O cfg.
+#endif
+typedef struct {
+ DWORD clu; /* File ID 1, directory */
+ WORD idx; /* File ID 2, index in the directory */
+ WORD ctr; /* File open counter, 0:none, 0x01..0xFF:read open count, 0x100:in write open */
+} FILESEM;
+#endif
+
+
+
+/* File system object structure (FATFS) */
+
+typedef struct {
+ BYTE fs_type; /* FAT sub-type (0:Not mounted) */
+ BYTE drv; /* Physical drive number */
+ BYTE csize; /* Sectors per cluster (1,2,4...128) */
+ BYTE n_fats; /* Number of FAT copies (1,2) */
+ BYTE wflag; /* win[] dirty flag (1:must be written back) */
+ BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
+ WORD id; /* File system mount ID */
+ WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
+#if _MAX_SS != 512
+ WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
+#endif
+#if _FS_REENTRANT
+ _SYNC_t sobj; /* Identifier of sync object */
+#endif
+#if !_FS_READONLY
+ DWORD last_clust; /* Last allocated cluster */
+ DWORD free_clust; /* Number of free clusters */
+ DWORD fsi_sector; /* fsinfo sector (FAT32) */
+#endif
+#if _FS_RPATH
+ DWORD cdir; /* Current directory start cluster (0:root) */
+#endif
+ DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
+ DWORD fsize; /* Sectors per FAT */
+ DWORD fatbase; /* FAT start sector */
+ DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
+ DWORD database; /* Data start sector */
+ DWORD winsect; /* Current sector appearing in the win[] */
+ BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
+#if _FS_SHARE
+ FILESEM flsem[_FS_SHARE]; /* File lock semaphores */
+#endif
+} FATFS;
+
+
+
+/* File object structure (FIL) */
+
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ BYTE flag; /* File status flags */
+ BYTE pad1;
+ DWORD fptr; /* File read/write pointer */
+ DWORD fsize; /* File size */
+ DWORD org_clust; /* File start cluster (0 when fsize==0) */
+ DWORD curr_clust; /* Current cluster */
+ DWORD dsect; /* Current data sector */
+#if !_FS_READONLY
+ DWORD dir_sect; /* Sector containing the directory entry */
+ BYTE* dir_ptr; /* Ponter to the directory entry in the window */
+#endif
+#if _USE_FASTSEEK
+ DWORD* cltbl; /* Pointer to the cluster link map table */
+#endif
+#if _FS_SHARE
+ UINT lockid; /* File lock ID */
+#endif
+#if !_FS_TINY
+ BYTE buf[_MAX_SS]; /* File data read/write buffer */
+#endif
+} FAT_FIL;
+
+
+
+/* Directory object structure (FAT_DIR) */
+
+typedef struct {
+ FATFS* fs; /* Pointer to the owner file system object */
+ WORD id; /* Owner file system mount ID */
+ WORD index; /* Current read/write index number */
+ DWORD sclust; /* Table start cluster (0:Root dir) */
+ DWORD clust; /* Current cluster */
+ DWORD sect; /* Current sector */
+ BYTE* dir; /* Pointer to the current SFN entry in the win[] */
+ BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
+#if _USE_LFN
+ WCHAR* lfn; /* Pointer to the LFN working buffer */
+ WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
+#endif
+} FAT_DIR;
+
+
+
+/* File status structure (FILINFO) */
+
+typedef struct {
+ DWORD fsize; /* File size */
+ WORD fdate; /* Last modified date */
+ WORD ftime; /* Last modified time */
+ BYTE fattrib; /* Attribute */
+ TCHAR fname[13]; /* Short file name (8.3 format) */
+#if _USE_LFN
+ TCHAR* lfname; /* Pointer to the LFN buffer */
+ int lfsize; /* Size of LFN buffer [chrs] */
+#endif
+} FILINFO;
+
+
+
+/* File function return code (FRESULT) */
+
+typedef enum {
+ FR_OK = 0, /* (0) Succeeded */
+ FR_DISK_ERR, /* (1) A hard error occured 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) Acces denied due to prohibited access or directory full */
+ FR_EXIST, /* (8) Acces 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 on the physical drive */
+ FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
+ 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 shareing policy */
+ FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
+ FR_TOO_MANY_OPEN_FILES /* (18) Number of open files > _FS_SHARE */
+} FRESULT;
+
+
+
+/*--------------------------------------------------------------*/
+/* FatFs module application interface */
+
+FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
+FRESULT f_open (FAT_FIL*, const TCHAR*, BYTE); /* Open or create a file */
+FRESULT f_read (FAT_FIL*, void*, UINT, UINT*); /* Read data from a file */
+FRESULT f_lseek (FAT_FIL*, DWORD); /* Move file pointer of a file object */
+FRESULT f_close (FAT_FIL*); /* Close an open file object */
+FRESULT f_opendir (FAT_DIR*, const TCHAR*); /* Open an existing directory */
+FRESULT f_readdir (FAT_DIR*, FILINFO*); /* Read a directory item */
+FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
+#if !_FS_READONLY
+FRESULT f_write (FAT_FIL*, const void*, UINT, UINT*); /* Write data to a file */
+FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
+FRESULT f_truncate (FAT_FIL*); /* Truncate file */
+FRESULT f_sync (FAT_FIL*); /* Flush cached data of a writing file */
+FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
+FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
+FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */
+FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */
+FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
+#endif
+#if _USE_FORWARD
+FRESULT f_forward (FAT_FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
+#endif
+#if _USE_MKFS
+FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
+#endif
+#if _FS_RPATH
+FRESULT f_chdir (const TCHAR*); /* Change current directory */
+FRESULT f_chdrive (BYTE); /* Change current drive */
+#endif
+#if _USE_STRFUNC
+int f_putc (TCHAR, FAT_FIL*); /* Put a character to the file */
+int f_puts (const TCHAR*, FAT_FIL*); /* Put a string to the file */
+int f_printf (FAT_FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
+TCHAR* f_gets (TCHAR*, int, FAT_FIL*); /* Get a string from the file */
+#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
+#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
+#ifndef EOF
+#define EOF (-1)
+#endif
+#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, UINT); /* OEM-Unicode bidirectional conversion */
+WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
+#if _USE_LFN == 3 /* Memory functions */
+void* ff_memalloc (UINT); /* Allocate memory block */
+void ff_memfree (void*); /* Free memory block */
+#endif
+#endif
+
+/* Sync functions */
+#if _FS_REENTRANT
+int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
+int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
+int ff_req_grant (_SYNC_t); /* Lock sync object */
+void ff_rel_grant (_SYNC_t); /* Unlock 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
+#define FA__ERROR 0x80
+
+#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 function */
+#define CREATE_LINKMAP 0xFFFFFFFF
+
+
+/* FatFs refers the members in the FAT structures with byte offset instead of
+/ structure member because there are incompatibility of the packing option
+/ between various compilers. */
+
+#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
+#define LDIR_Ord 0
+#define LDIR_Attr 11
+#define LDIR_Type 12
+#define LDIR_Chksum 13
+#define LDIR_FstClusLO 26
+
+
+
+/*--------------------------------*/
+/* 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 */
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/FATFileSystem/Core/ffconf.h Sat Aug 07 18:32:30 2010 +0000 @@ -0,0 +1,161 @@ +/*---------------------------------------------------------------------------/ +/ FatFs - FAT file system module configuration file R0.08 (C)ChaN, 2010 / +/----------------------------------------------------------------------------/ +/ +/ CAUTION! Do not forget to make clean the project after any changes to +/ the configuration options. +/ +/---------------------------------------------------------------------------*/ + +#ifndef _FFCONF +#define _FFCONF 8085 /* Revision ID */ + +/*---------------------------------------------------------------------------/ +/ Function and Buffer Configurations / +/---------------------------------------------------------------------------*/ + +#define _FS_TINY 0 /* 0:Normal or 1:Tiny */ +/* When _FS_TINY is set to 1, FatFs uses the sector buffer in the file system +/ object instead of the sector buffer in the individual file object for file +/ data transfer. This reduces memory consumption 512 bytes each file object. */ + +#define _FS_READONLY 0 /* 0:Read/Write or 1:Read only */ +/* 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 /* 0, 1, 2 or 3 */ +/* 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 2 /* 0:Disable or 1/2:Enable */ +/* To enable string functions, set _USE_STRFUNC to 1 or 2. */ + +#define _USE_MKFS 1 /* 0:Disable or 1:Enable */ +/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */ + +#define _USE_FORWARD 0 /* 0:Disable or 1:Enable */ +/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */ + +#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */ +/* To enable fast seek feature, set _USE_FASTSEEK to 1. */ + +/*---------------------------------------------------------------------------/ +/ Locale and Namespace Configurations +/----------------------------------------------------------------------------*/ + +#define _CODE_PAGE 1 +/* The _CODE_PAGE specifies the OEM code page to be used on the target system. +/ Incorrect setting of the code page can cause a file open failure. +/ +/ 932 - Japanese Shift-JIS (DBCS, OEM, Windows) +/ 936 - Simplified Chinese GBK (DBCS, OEM, Windows) +/ 949 - Korean (DBCS, OEM, Windows) +/ 950 - Traditional Chinese Big5 (DBCS, OEM, Windows) +/ 1250 - Central Europe (Windows) +/ 1251 - Cyrillic (Windows) +/ 1252 - Latin 1 (Windows) +/ 1253 - Greek (Windows) +/ 1254 - Turkish (Windows) +/ 1255 - Hebrew (Windows) +/ 1256 - Arabic (Windows) +/ 1257 - Baltic (Windows) +/ 1258 - Vietnam (OEM, Windows) +/ 437 - U.S. (OEM) +/ 720 - Arabic (OEM) +/ 737 - Greek (OEM) +/ 775 - Baltic (OEM) +/ 850 - Multilingual Latin 1 (OEM) +/ 858 - Multilingual Latin 1 + Euro (OEM) +/ 852 - Latin 2 (OEM) +/ 855 - Cyrillic (OEM) +/ 866 - Russian (OEM) +/ 857 - Turkish (OEM) +/ 862 - Hebrew (OEM) +/ 874 - Thai (OEM, Windows) +/ 1 - ASCII only (Valid for non LFN cfg.) */ + +#define _USE_LFN 0 /* 0 to 3 */ +#define _MAX_LFN 255 /* Maximum LFN length to handle (12 to 255) */ +/* The _USE_LFN option switches the LFN support. +/ +/ 0: Disable LFN. _MAX_LFN and _LFN_UNICODE have no effect. +/ 1: Enable LFN with static working buffer on the bss. NOT REENTRANT. +/ 2: Enable LFN with dynamic working buffer on the STACK. +/ 3: Enable LFN with dynamic working buffer on the HEAP. +/ +/ The LFN working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN, +/ Unicode handling functions ff_convert() and ff_wtoupper() must be added +/ to the project. When enable to use heap, memory control functions +/ ff_memalloc() and ff_memfree() must be added to the project. */ + +#define _LFN_UNICODE 0 /* 0:ANSI/OEM or 1:Unicode */ +/* To switch the character code set on FatFs API to Unicode, +/ enable LFN feature and set _LFN_UNICODE to 1. */ + +#define _FS_RPATH 0 /* 0:Disable or 1:Enable */ +/* When _FS_RPATH is set to 1, relative path feature is enabled and f_chdir, +/ f_chdrive function are available. +/ Note that output of the f_readdir fnction is affected by this option. */ + +/*---------------------------------------------------------------------------/ +/ Physical Drive Configurations +/----------------------------------------------------------------------------*/ + +#define _DRIVES 7 +/* Number of volumes (logical drives) to be used. */ + +#define _MAX_SS 512 /* 512, 1024, 2048 or 4096 */ +/* Maximum sector size to be handled. +/ Always set 512 for memory card and hard disk but a larger value may be +/ required for floppy disk (512/1024) and optical disk (512/2048). +/ When _MAX_SS is larger than 512, GET_SECTOR_SIZE command must be implememted +/ to the disk_ioctl function. */ + +#define _MULTI_PARTITION 0 /* 0:Single parition or 1:Multiple partition */ +/* When _MULTI_PARTITION is set to 0, each volume is bound to the same physical +/ drive number and can mount only first primaly partition. When it is set to 1, +/ each volume is tied to the partitions listed in Drives[]. */ + +/*---------------------------------------------------------------------------/ +/ System Configurations +/----------------------------------------------------------------------------*/ + +#define _WORD_ACCESS 0 /* 0 or 1 */ +/* Set 0 first and it is always compatible with all platforms. The _WORD_ACCESS +/ option defines which access method is used to the word data on the FAT volume. +/ +/ 0: Byte-by-byte access. +/ 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 size. */ + +#define _FS_REENTRANT 0 /* 0:Disable or 1:Enable */ +#define _FS_TIMEOUT 1000 /* Timeout period in unit of time ticks */ +#define _SYNC_t HANDLE /* O/S dependent type of sync object. + e.g. HANDLE, OS_EVENT*, ID and etc.. */ +/* Include a header file here to define O/S system calls */ +/* #include <windows.h>, <ucos_ii.h.h>, <semphr.h> or ohters. */ + +/* The _FS_REENTRANT option switches the reentrancy of the FatFs module. +/ +/ 0: Disable reentrancy. _SYNC_t and _FS_TIMEOUT have no effect. +/ 1: Enable reentrancy. Also user provided synchronization handlers, +/ ff_req_grant, ff_rel_grant, ff_del_syncobj and ff_cre_syncobj +/ function must be added to the project. */ + +#define _FS_SHARE 0 /* 0:Disable or >=1:Enable */ +/* To enable file shareing feature, set _FS_SHARE to >= 1 and also user + provided memory handlers, ff_memalloc and ff_memfree function must be + added to the project. The value defines number of files can be opened + per volume. */ + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Core/integer.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,30 @@
+/*-------------------------------------------*/
+/* Integer type definitions for FatFs module */
+/*-------------------------------------------*/
+
+#ifndef _INTEGER
+#define _INTEGER
+
+/* These types must be 16-bit, 32-bit or larger integer */
+typedef int INT;
+typedef unsigned int UINT;
+
+/* These types must be 8-bit integer */
+typedef signed char CHAR;
+typedef unsigned char UCHAR;
+typedef unsigned char BYTE;
+
+/* These types must be 16-bit integer */
+typedef short SHORT;
+typedef unsigned short USHORT;
+typedef unsigned short WORD;
+
+/* These types must be 32-bit integer */
+typedef long LONG;
+typedef unsigned long ULONG;
+typedef unsigned long DWORD;
+
+/* Boolean type */
+typedef enum { FALSE = 0, TRUE } BOOL;
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATDirHandle.cpp Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,48 @@
+/* mbed Microcontroller Library - FATDirHandle
+ Copyright (c) 2008, sford */
+
+#include "FATDirHandle.h"
+
+FATDirHandle::FATDirHandle(FAT_DIR InputDirStr)
+{
+ DirectoryObject = InputDirStr;
+}
+
+int FATDirHandle::closedir()
+{
+ delete this;
+ return 0;
+}
+
+struct dirent* FATDirHandle::readdir()
+{
+ FILINFO FileInfo;
+ FRESULT Result = f_readdir(&DirectoryObject, &FileInfo);
+ if (Result || !FileInfo.fname[0])
+ {
+ return NULL;
+ }
+ else
+ {
+ for (unsigned char i = 0; i < 13; i++)
+ {
+ CurrentEntry.d_name[i] = ((char*)FileInfo.fname)[i];
+ }
+ return &CurrentEntry;
+ }
+}
+
+void FATDirHandle::rewinddir()
+{
+ DirectoryObject.index = 0;
+}
+
+off_t FATDirHandle::telldir()
+{
+ return (off_t)DirectoryObject.index;
+}
+
+void FATDirHandle::seekdir(off_t location)
+{
+ DirectoryObject.index = (WORD)location;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATDirHandle.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,27 @@
+/* mbed Microcontroller Library - FATDirHandle
+ Copyright (c) 2008, sford */
+
+#ifndef MBED_FATDIRHANDLE_H
+#define MBED_FATDIRHANDLE_H
+
+#include "ff.h"
+#include "mbed.h"
+#include "DirHandle.h"
+#include <stdio.h>
+
+class FATDirHandle : public DirHandle
+{
+ private:
+ FAT_DIR DirectoryObject;
+ struct dirent CurrentEntry;
+
+ public:
+ FATDirHandle(FAT_DIR InputDirStr);
+ virtual int closedir();
+ virtual struct dirent* readdir();
+ virtual void rewinddir();
+ virtual off_t telldir();
+ virtual void seekdir(off_t location);
+};
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATFileHandle.cpp Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,87 @@
+/* mbed Microcontroller Library - FATFileHandle
+ Copyright (c) 2008, sford */
+
+#include "FATFileHandle.h"
+
+FATFileHandle::FATFileHandle(FAT_FIL InputFilStr)
+{
+ FileObject = InputFilStr;
+}
+
+ssize_t FATFileHandle::write(const void* buffer, size_t length)
+{
+ UINT ByteWritten;
+ if (f_write(&FileObject, buffer, (UINT)length, &ByteWritten))
+ {
+ return -1;
+ }
+ else
+ {
+ return (ssize_t)ByteWritten;
+ }
+}
+
+int FATFileHandle::close()
+{
+ if (f_close(&FileObject))
+ {
+ return -1;
+ }
+ else
+ {
+ delete this;
+ return 0;
+ }
+}
+
+ssize_t FATFileHandle::read(void* buffer, size_t length)
+{
+ UINT ByteRead;
+ if (f_read(&FileObject, buffer, (UINT)length, &ByteRead))
+ {
+ return -1;
+ }
+ else
+ {
+ return (ssize_t)ByteRead;
+ }
+}
+
+int FATFileHandle::isatty()
+{
+ return 0;
+}
+
+off_t FATFileHandle::lseek(off_t offset, int whence)
+{
+ switch (whence)
+ {
+ case SEEK_CUR: offset += FileObject.fptr; break;
+ case SEEK_END: offset += FileObject.fsize; break;
+ }
+ if (f_lseek(&FileObject, (DWORD)offset))
+ {
+ return -1;
+ }
+ else
+ {
+ return (off_t)FileObject.fptr;
+ }
+}
+
+int FATFileHandle::fsync()
+{
+ if (f_sync(&FileObject))
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+off_t FATFileHandle::flen()
+{
+ return (off_t)FileObject.fsize;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATFileHandle.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,28 @@
+/* mbed Microcontroller Library - FATFileHandle
+ Copyright (c) 2008, sford */
+
+#ifndef MBED_FATFILEHANDLE_H
+#define MBED_FATFILEHANDLE_H
+
+#include "ff.h"
+#include "mbed.h"
+#include "FileHandle.h"
+#include <stdio.h>
+
+class FATFileHandle : public FileHandle
+{
+ private:
+ FAT_FIL FileObject;
+
+ public:
+ FATFileHandle(FAT_FIL InputFilStr);
+ virtual ssize_t write(const void* buffer, size_t length);
+ virtual int close();
+ virtual ssize_t read(void* buffer, size_t length);
+ virtual int isatty();
+ virtual off_t lseek(off_t offset, int whence);
+ virtual int fsync();
+ virtual off_t flen();
+};
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATFileSystem.cpp Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,141 @@
+/* mbed Microcontroller Library - FATFileSystem
+ Copyright (c) 2008, sford */
+
+#include "FATFileSystem.h"
+#include "mbed.h"
+
+DWORD get_fattime(void)
+{
+ return 35719201;
+}
+
+FATFileSystem* FATFileSystem::DriveArray[_DRIVES] = {0};
+
+FATFileSystem::FATFileSystem(const char* SystemName) : FileSystemLike(SystemName)
+{
+ for (unsigned char i = 0; i < _DRIVES; i++)
+ {
+ if(DriveArray[i] == 0)
+ {
+ DriveArray[i] = this;
+ Drive = i;
+ f_mount((BYTE)i, &FileSystemObject);
+ return;
+ }
+ }
+}
+
+FATFileSystem::~FATFileSystem()
+{
+ for (unsigned char i = 0; i < _DRIVES; i++)
+ {
+ if (DriveArray[i] == this)
+ {
+ DriveArray[i] = NULL;
+ f_mount((BYTE)i, NULL);
+ }
+ }
+}
+
+FileHandle* FATFileSystem::open(const char* filename, int flags)
+{
+ FAT_FIL FileObject;
+ char FileName[64];
+ BYTE ModeFlags = 0;
+
+ sprintf(FileName, "%d:/%s", Drive, filename);
+ switch (flags & 3)
+ {
+ case O_RDONLY: ModeFlags = FA_READ; break;
+ case O_WRONLY: ModeFlags = FA_WRITE; break;
+ case O_RDWR: ModeFlags = FA_READ | FA_WRITE; break;
+ }
+ if(flags & O_CREAT)
+ {
+ if(flags & O_TRUNC)
+ {
+ ModeFlags |= FA_CREATE_ALWAYS;
+ }
+ else
+ {
+ ModeFlags |= FA_OPEN_ALWAYS;
+ }
+ }
+ else
+ {
+ ModeFlags |= FA_OPEN_EXISTING;
+ }
+ if (f_open(&FileObject, (const TCHAR*)FileName, ModeFlags))
+ {
+ return NULL;
+ }
+ else
+ {
+ if (flags & O_APPEND)
+ {
+ f_lseek(&FileObject, (DWORD)FileObject.fsize);
+ }
+ return new FATFileHandle(FileObject);
+ }
+}
+
+int FATFileSystem::remove(const char* filename)
+{
+ char FileName[64];
+
+ sprintf(FileName, "%d:/%s", Drive, filename);
+ if (f_unlink((const TCHAR*)FileName))
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+int FATFileSystem::rename(const char* oldname, const char* newname)
+{
+ char OldName[64];
+
+ sprintf(OldName, "%d:/%s", Drive, oldname);
+ if (f_rename((const TCHAR*)OldName, (const TCHAR*)newname))
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+DirHandle* FATFileSystem::opendir(const char* name)
+{
+ FAT_DIR DirectoryObject;
+ char DirectoryName[64];
+
+ sprintf(DirectoryName, "%d:%s", Drive, name);
+ if (f_opendir(&DirectoryObject, (const TCHAR*)DirectoryName))
+ {
+ return NULL;
+ }
+ else
+ {
+ return new FATDirHandle(DirectoryObject);
+ }
+}
+
+int FATFileSystem::mkdir(const char* name, mode_t mode)
+{
+ char DirectoryName[64];
+
+ sprintf(DirectoryName, "%d:%s", Drive, name);
+ if (f_mkdir((const TCHAR*)DirectoryName))
+ {
+ return -1;
+ }
+ else
+ {
+ return 0;
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FATFileSystem/Interface/FATFileSystem.h Sat Aug 07 18:32:30 2010 +0000
@@ -0,0 +1,44 @@
+/* mbed Microcontroller Library - FATFileSystem
+ Copyright (c) 2008, sford */
+
+#ifndef MBED_FATFILESYSTEM_H
+#define MBED_FATFILESYSTEM_H
+
+#include "ff.h"
+#include "mbed.h"
+#include "FileSystemLike.h"
+#include "FATFileHandle.h"
+#include "FATDirHandle.h"
+#include <stdio.h>
+
+class FATFileSystem : public FileSystemLike
+{
+ private:
+ FATFS FileSystemObject;
+ unsigned char Drive;
+
+ public:
+ static FATFileSystem* DriveArray[_DRIVES];
+
+ FATFileSystem(const char* SystemName);
+
+ virtual ~FATFileSystem();
+ virtual FileHandle* open(const char* filename, int flags);
+ virtual int remove(const char* filename);
+ virtual int rename(const char* oldname, const char* newname);
+ virtual DirHandle* opendir(const char* name);
+ virtual int mkdir(const char* name, mode_t mode);
+
+ virtual unsigned char disk_initialize() { return 0x00; }
+ virtual unsigned char disk_status() { return 0x00; }
+ virtual unsigned char disk_read(unsigned char* buff,
+ unsigned long sector, unsigned char count) = 0;
+ virtual unsigned char disk_write(const unsigned char* buff,
+ unsigned long sector, unsigned char count) = 0;
+ virtual unsigned char disk_sync() { return 0x00; }
+ virtual unsigned long disk_sector_count() = 0;
+ virtual unsigned short disk_sector_size() { return 512; }
+ virtual unsigned long disk_block_size() { return 1; }
+};
+
+#endif
\ No newline at end of file
--- a/SDCard.cpp Sun Jul 18 21:26:24 2010 +0000
+++ b/SDCard.cpp Sat Aug 07 18:32:30 2010 +0000
@@ -1,7 +1,7 @@
#include "SDCard.h"
-SDCard::SDCard(PinName mosi, PinName miso, PinName sck, PinName cs)
- : DataLines(mosi, miso, sck), ChipSelect(cs), CRCMode(1)
+SDCard::SDCard(PinName mosi, PinName miso, PinName sck, PinName cs, const char* DiskName) :
+ FATFileSystem(DiskName), DataLines(mosi, miso, sck), ChipSelect(cs), CRCMode(1), Timeout(8192)
{
DataLines.frequency(100000);
//set universal speed
@@ -14,240 +14,523 @@
//generate the command crc lookup table
//(generator polynomial x^16 + x^12 + x^5 + 1 converts to decimal 69665)
Initialize();
- //send card initialization sequence
+}
+
+unsigned char SDCard::disk_initialize()
+{ return 0x00; }
+unsigned char SDCard::disk_status()
+{ return 0x00; }
+unsigned char SDCard::disk_read(unsigned char* buff, unsigned long sector, unsigned char count)
+{ return Read((unsigned int)sector, count, buff); }
+unsigned char SDCard::disk_write(const unsigned char* buff, unsigned long sector, unsigned char count)
+{ return Write((unsigned int)sector, count, (unsigned char*)buff); }
+unsigned char SDCard::disk_sync()
+{ return 0x00; }
+unsigned long SDCard::disk_sector_count()
+{
+ switch (CSD[0] & 0xC0)
+ {
+ case 0x00:
+ return ((((CSD[6] & 0x03) << 10) | (CSD[7] << 2) | ((CSD[8] & 0xC0) >> 6)) + 1)
+ * (1 << ((((CSD[9] & 0x03) << 1) | ((CSD[10] & 0x80) >> 7)) + 2));
+ case 0x40:
+ return ((((CSD[7] & 0x3F) << 16) | (CSD[8] << 8) | CSD[9]) + 1) * 1024;
+ default:
+ return 0;
+ }
+}
+unsigned short SDCard::disk_sector_size()
+{ return 512; }
+unsigned long SDCard::disk_block_size()
+{
+ switch (CSD[0] & 0xC0)
+ {
+ case 0x00:
+ return (CSD[10] << 1) | (CSD[11] >> 7) + 1;
+ case 0x40:
+ return 1;
+ default:
+ return 0;
+ }
}
-bool SDCard::Write(unsigned int Address, unsigned char* Data)
+unsigned char SDCard::Log(unsigned char Control, unsigned char Data)
{
- if (Capacity)
+ static unsigned char Mode = 0x00;
+ static unsigned short Index = 0;
+
+ if (CRCMode)
{
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(24, Address, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- else
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(24, Address * 512, Workspace);///////////implement block length
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
+ SelectCRCMode(0);
}
- ChipSelect.write(0);
- DataLines.write(0xFE);
- //start data block token
- for (unsigned short j = 0; j < 512; j++)
- {
- DataLines.write(Data[j]);
- //write the data
- }
- DataCRC(512, Data, Workspace);
- DataLines.write(Workspace[1]);
- DataLines.write(Workspace[2]);
- for (unsigned int j = 0; j < 8192; j++)
+
+ switch (Control)
{
- Workspace[0] = DataLines.write(0xFF);
- if ((Workspace[0] & 0x1F) == 0x05)
- { break; }
- }
- while (!DataLines.write(0xFF));
- ChipSelect.write(1);
- DataLines.write(0xFF);
- if ((Workspace[0] & 0x1F) == 0x05)
- { return 1; }
- else
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(13, 0, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- }
- return 0;
+ case 0x00:
+ if (Mode)
+ {
+ ChipSelect.write(0);
+ for (; Index < 512; Index++)
+ {
+ DataLines.write(0xFF);
+ }
+ DataLines.write(0xFF);
+ DataLines.write(0xFF);
+ ChipSelect.write(1);
+ if (Mode == 0x01)
+ {
+ ChipSelect.write(0);
+ t = 0;
+ do
+ {
+ t++;
+ } while (((DataLines.write(0xFF) & 0x11) != 0x01) && (t < Timeout));
+ while (!DataLines.write(0xFF));
+ DataLines.write(0xFD);
+ DataLines.write(0xFF);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ }
+ else
+ {
+ Command(12, 0, Workspace);
+ ChipSelect.write(0);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ }
+ Index = 0;
+ Mode = 0x00;
+ }
+ return 0xFF;
+
+ case 0x01:
+ if (Mode != 0x01)
+ {
+ Log(0, 0);
+ Command(25, 0, Workspace);
+ Mode = 0x01;
+ }
+ if (Index == 0)
+ {
+ ChipSelect.write(0);
+ DataLines.write(0xFC);
+ DataLines.write(Data);
+ ChipSelect.write(1);
+ Index++;
+ }
+ else if (Index < 511)
+ {
+ ChipSelect.write(0);
+ DataLines.write(Data);
+ ChipSelect.write(1);
+ Index++;
+ }
+ else
+ {
+ ChipSelect.write(0);
+ DataLines.write(Data);
+ DataLines.write(0xFF);
+ DataLines.write(0xFF);
+ t = 0;
+ do
+ {
+ t++;
+ } while (((DataLines.write(0xFF) & 0x11) != 0x01) && (t < Timeout));
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ Index = 0;
+ }
+ return 0xFF;
+
+ case 0x02:
+ if (Mode != 0x02)
+ {
+ Log(0, 0);
+ Command(18, 0, Workspace);
+ Mode = 0x02;
+ }
+ if (Index == 0)
+ {
+ ChipSelect.write(0);
+ t = 0;
+ do
+ {
+ t++;
+ } while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
+ Workspace[0] = DataLines.write(0xFF);
+ ChipSelect.write(1);
+ Index++;
+ return Workspace[0];
+ }
+ else if (Index < 511)
+ {
+ ChipSelect.write(0);
+ Workspace[0] = DataLines.write(0xFF);
+ ChipSelect.write(1);
+ Index++;
+ return Workspace[0];
+ }
+ else
+ {
+ ChipSelect.write(0);
+ Workspace[0] = DataLines.write(0xFF);
+ DataLines.write(0xFF);
+ DataLines.write(0xFF);
+ ChipSelect.write(1);
+ Index = 0;
+ return Workspace[0];
+ }
+
+ default:
+ return 0xFF;
}
}
-bool SDCard::Read(unsigned int Address, unsigned char* Data)
+unsigned char SDCard::Write(unsigned int Address, unsigned char* Data)
{
- if (Capacity)
+ if (!Capacity)
{
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(17, Address, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
+ Command(24, Address * 512, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
}
else
{
- for (unsigned int j = 0; j < 8192; j++)
+ Command(24, Address, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
+ }
+ DataCRC(512, Data, Workspace);
+ ChipSelect.write(0);
+ DataLines.write(0xFE);
+ for (unsigned short i = 0; i < 512; i++)
+ {
+ DataLines.write(Data[i]);
+ }
+ DataLines.write(Workspace[0]);
+ DataLines.write(Workspace[1]);
+ t = 0;
+ do
+ {
+ Workspace[0] = DataLines.write(0xFF);
+ t++;
+ } while (((Workspace[0] & 0x11) != 0x01) && (t < Timeout));
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ if (((Workspace[0] & 0x1F) != 0x05) || (t == Timeout))
+ { return 0x01; }
+ else
+ { return 0x00; }
+}
+unsigned char SDCard::Write(unsigned int Address, unsigned char SectorCount, unsigned char* Data)
+{
+ static unsigned char CurrentSectorCount = 1;
+ if (SectorCount != CurrentSectorCount)
+ {
+ Command(55, 0, Workspace);
+ Command(23, SectorCount, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
+ CurrentSectorCount = SectorCount;
+ }
+ if (!Capacity)
+ {
+ Command(25, Address * 512, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
+ }
+ else
+ {
+ Command(25, Address, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
+ }
+ Workspace[4] = 0x00;
+ for (unsigned char i = 0; i < SectorCount; i++)
+ {
+ DataCRC(512, &Data[i * 512], Workspace);
+ ChipSelect.write(0);
+ DataLines.write(0xFC);
+ for (unsigned int j = i * 512; j < (i + 1) * 512; j++)
{
- Command(17, Address * 512, Workspace);///////////implement block length
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
+ DataLines.write(Data[j]);
+ }
+ DataLines.write(Workspace[0]);
+ DataLines.write(Workspace[1]);
+ t = 0;
+ do
+ {
+ Workspace[0] = DataLines.write(0xFF);
+ t++;
+ } while (((Workspace[0] & 0x11) != 0x01) && (t < Timeout));
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ Workspace[4] |= Workspace[0];
+ if (t == Timeout)
+ {
+ ChipSelect.write(0);
+ DataLines.write(0xFD);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ return 0x01;
}
}
ChipSelect.write(0);
- for (unsigned int j = 0; j < 8192; j++)
+ DataLines.write(0xFD);
+ DataLines.write(0xFF);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ if ((Workspace[4] & 0x1F) != 0x05)
+ { return 0x01; }
+ else
+ { return 0x00; }
+}
+
+unsigned char SDCard::Read(unsigned int Address, unsigned char* Data)
+{
+ if (!Capacity)
{
- if (DataLines.write(0xFF) == 0xFE)
- { break; }
+ Command(17, Address * 512, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
}
- for (unsigned short j = 0; j < 512; j++)
+ else
+ {
+ Command(17, Address, Workspace);
+ if (Workspace[0])
+ { return 0x04; }
+ }
+ ChipSelect.write(0);
+ t = 0;
+ do
{
- Data[j] = DataLines.write(0xFF);
+ t++;
+ } while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
+ if (t == Timeout) { ChipSelect.write(1); DataLines.write(0xFF); return 0x01; }
+ for (unsigned short i = 0; i < 512; i++)
+ {
+ Data[i] = DataLines.write(0xFF);
}
+ Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
- Workspace[4] = DataLines.write(0xFF);
ChipSelect.write(1);
DataLines.write(0xFF);
DataCRC(512, Data, Workspace);
- if ((Workspace[1] == Workspace[3]) && (Workspace[2] == Workspace[4]))
- { return 1; }
+ if (CRCMode && ((Workspace[0] != Workspace[2]) || (Workspace[1] != Workspace[3])))
+ { return 0x01; }
+ else
+ { return 0x00; }
+}
+unsigned char SDCard::Read(unsigned int Address, unsigned char SectorCount, unsigned char* Data)
+{
+ if (!Capacity)
+ {
+ Command(18, Address * 512, Workspace);
+ if (Workspace[0])
+ { return 0; }
+ }
else
- { return 0; }
+ {
+ Command(18, Address, Workspace);
+ if (Workspace[0])
+ { return 0; }
+ }
+ Workspace[4] = 0x00;
+ for (unsigned char i = 0; i < SectorCount; i++)
+ {
+ ChipSelect.write(0);
+ t = 0;
+ do
+ {
+ t++;
+ } while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
+ if (t == Timeout)
+ {
+ ChipSelect.write(1);
+ Command(12, 0, Workspace);
+ ChipSelect.write(0);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ return 0x01;
+ }
+ for (unsigned int j = i * 512; j < (i + 1) * 512; j++)
+ {
+ Data[j] = DataLines.write(0xFF);
+ }
+ Workspace[2] = DataLines.write(0xFF);
+ Workspace[3] = DataLines.write(0xFF);
+ ChipSelect.write(1);
+ DataCRC(512, &Data[i * 512], Workspace);
+ Workspace[4] |= ((Workspace[0] != Workspace[2]) || (Workspace[1] != Workspace[3]));
+ }
+ Command(12, 0, Workspace);
+ ChipSelect.write(0);
+ while (!DataLines.write(0xFF));
+ ChipSelect.write(1);
+ if (Workspace[4])
+ { return 0x01; }
+ else
+ { return 0x00; }
}
-bool SDCard::Initialize()
+unsigned char SDCard::SelectCRCMode(bool Mode)
{
- for (unsigned char j = 0; j < 16; j++)
+ t = 0;
+ do
+ {
+ Command(59, Mode, Workspace);
+ t++;
+ } while (Workspace[0] && (t < Timeout));
+ CRCMode = Mode;
+ if (t == Timeout)
+ { return 0x01; }
+ else
+ { return 0x00; }
+}
+
+unsigned char SDCard::Initialize()
+{
+ for (unsigned char i = 0; i < 16; i++)
{
DataLines.write(0xFF);
+ //clock card at least 74 times to power up
}
- //perform specified power up sequence
-
- for (unsigned int j = 0; j < 8192; j++)
+
+ t = 0;
+ do
{
Command(0, 0, Workspace);
//send command 0 to put the card into SPI mode
- if (Workspace[0] == 0x01)
- //check for idle mode
- { break; }
- if (j == 8191)
- { return 0; }
- }
-
- for (unsigned int j = 0; j < 8192; j++)
+ t++;
+ } while ((Workspace[0] != 0x01) && (t < Timeout));
+ if (t == Timeout) { return 0x01; }
+
+ t = 0;
+ do
{
Command(59, 1, Workspace);
- //send command 59 to turn on CRCs
- if (Workspace[0] == 0x01)
- { break; }
- if (j == 8191)
- { return 0; }
- }
-
- for (unsigned int j = 0; j < 8192; j++)
+ //turn on CRCs
+ t++;
+ } while ((Workspace[0] != 0x01) && (Workspace[0] != 0x05) && (t < Timeout));
+ //command 59 is not valid for all cards in idle state
+ if (t == Timeout) { return 0x01; }
+
+ t = 0;
+ do
{
Command(8, 426, Workspace);
//voltage bits are 0x01 for 2.7V - 3.6V,
//check pattern 0xAA, [00,00,01,AA] = 426
- if ((Workspace[0] == 0x05) || ((Workspace[0] == 0x01) &&
- ((Workspace[3] & 0x0F) == 0x01) && (Workspace[4] == 0xAA)))
- //check version, voltage acceptance, and check pattern
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Version = Workspace[0] == 0x01;
+ t++;
+ } while (((Workspace[0] != 0x01) || ((Workspace[3] & 0x0F) != 0x01) ||
+ (Workspace[4] != 0xAA)) && (Workspace[0] != 0x05) && (t < Timeout));
+ //check version, voltage acceptance, and check pattern
+ if (t == Timeout) { return 0x01; }
+ Version = Workspace[0] != 0x05;
//store card version
-
- for (unsigned int j = 0; j < 8192; j++)
+
+ t = 0;
+ do
{
Command(58, 0, Workspace);
//check the OCR
- if ((Workspace[0] == 0x01) && ((Workspace[2] & 0x20) || (Workspace[2] & 0x10)))
- //check for correct operating voltage 3.3V
- { break; }
- if (j == 8191)
- { return 0; }
- }
-
- for (unsigned int j = 0; j < 8192; j++)
+ t++;
+ } while (((Workspace[0] != 0x01) ||
+ !((Workspace[2] & 0x20) || (Workspace[2] & 0x10))) && (t < Timeout));
+ //check for correct operating voltage 3.3V
+ if (t == Timeout) { return 0x01; }
+
+ t = 0;
+ do
{
Command(55, 0, Workspace);
- //specify application-specific command
Command(41, 1073741824, Workspace);
- //specify host supports high capacity cards
- //[40,00,00,00] = 1073741824
- if (Workspace[0] == 0x00)
- //check if card is ready
- { break; }
- if (j == 8191)
- { return 0; }
- }
-
- for (unsigned int j = 0; j < 8192; j++)
+ //specify host supports high capacity
+ //cards, [40,00,00,00] = 1073741824
+ t++;
+ } while (Workspace[0] && (t < Timeout));
+ //check if card is ready
+ if (t == Timeout) { return 0x01; }
+
+ if (SelectCRCMode(1))
+ { return 0x01; }
+ //turn on CRCs for all cards
+
+ t = 0;
+ do
{
Command(58, 0, Workspace);
//check the OCR again
- if ((Workspace[0] == 0x00) && (Workspace[1] & 0x80))
- { break; }
- if (j == 8191)
- { return 0; }
+ t++;
+ } while ((Workspace[0] || !(Workspace[1] & 0x80)) && (t < Timeout));
+ //check power up status
+ if (t == Timeout) { return 0x01; }
+ for (unsigned char i = 0; i < 4; i++)
+ {
+ OCR[i] = Workspace[i + 1];
+ //record OCR
}
- for (unsigned char j = 0; j < 4; j++)
- {
- OCR[j] = Workspace[j + 1];
- }
- //record OCR
Capacity = (OCR[0] & 0x40) == 0x40;
//record capacity
-
- for (unsigned int j = 0; j < 8192; j++)
+
+ t = 0;
+ do
{
- Command(9, 0, Workspace);
- //read the card-specific data register
- ChipSelect.write(0);
- for (unsigned int k = 0; k < 8192; k++)
+ do
{
- if (DataLines.write(0xFF) == 0xFE)
- { break; }
- }
+ Command(9, 0, Workspace);
+ //read the card-specific-data register
+ t++;
+ } while (Workspace[0] && (t < Timeout));
+ if (t == Timeout) { return 0x01; }
+ ChipSelect.write(0);
+ do
+ {
+ t++;
+ } while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
//get to the start-data-block token
- for (unsigned char k = 0; k < 16; k++)
+ if (t == Timeout) { ChipSelect.write(1); DataLines.write(0xFF); return 0x01; }
+ for (unsigned char i = 0; i < 16; i++)
{
- CSD[k] = DataLines.write(0xFF);
+ CSD[i] = DataLines.write(0xFF);
+ //gather CSD
}
+ Workspace[2] = DataLines.write(0xFF);
Workspace[3] = DataLines.write(0xFF);
- Workspace[4] = DataLines.write(0xFF);
+ //save CSD CRC
ChipSelect.write(1);
DataLines.write(0xFF);
DataCRC(16, CSD, Workspace);
//calculate the CSD data CRC
- Workspace[0] = 0;
- for (unsigned char k = 0; k < 15; k++)
+ Workspace[4] = 0;
+ for (unsigned char i = 0; i < 15; i++)
{
- Workspace[0] = CommandCRCTable[Workspace[0]] ^ CSD[k];
+ Workspace[4] = CommandCRCTable[Workspace[4]] ^ CSD[i];
}
- Workspace[0] = CommandCRCTable[Workspace[0]] | 0x01;
- if ((Workspace[0] == CSD[15]) && (Workspace[1] == Workspace[3]) && (Workspace[2] == Workspace[4]))
- { break; }
- if (j == 8191)
- { return 0; }
- }
-
- if (((CSD[3] & 0x07) > 2) || ((CSD[3] & 0x7F) > 0x32))
+ Workspace[4] = CommandCRCTable[Workspace[4]] | 0x01;
+ //calculate the CSD table CRC
+ t++;
+ } while (((Workspace[0] != Workspace[2]) || (Workspace[1] != Workspace[3]) ||
+ (Workspace[4] != CSD[15])) && (t < Timeout));
+ //check all CSD CRCs
+ if (t == Timeout) { return 0x01; }
+
+ if (((CSD[3] & 0x07) > 0x02) ||
+ (((CSD[3] & 0x78) > 0x30) && ((CSD[3] & 0x07) > 0x01)))
{
DataLines.frequency(25000000);
- //maximum speed is given at 25MHz
+ //maximum speed is 25MHz
}
else
{
Workspace[0] = 1;
- for (unsigned char j = 0; j < (CSD[3] & 0x07); j++)
+ for (unsigned char i = 0; i < (CSD[3] & 0x07); i++)
{
Workspace[0] *= 10;
//the first three bits are a power of ten multiplier for speed
@@ -273,25 +556,78 @@
//read the CSD card speed bits and speed up card operations
}
}
-
+
+ if (CSD[4] & 0x40)
+ //check for switch command class support
+ {
+ t = 0;
+ do
+ {
+ Command(6, 2147483649, Workspace);
+ //switch to high-speed mode (SDR25, 50MHz)
+ t++;
+ } while (Workspace[0] && (Workspace[0] != 0x04) && (t < Timeout));
+ //some cards that support switch class commands respond with illegal command
+ if (t == Timeout) { return 0x01; }
+ if (!Workspace[0])
+ {
+ do
+ {
+ ChipSelect.write(0);
+ do
+ {
+ t++;
+ } while ((DataLines.write(0xFF) != 0xFE) && (t < Timeout));
+ //get to the start-data-block token
+ if (t == Timeout) { ChipSelect.write(1); DataLines.write(0xFF); return 0x01; }
+ for (unsigned char i = 0; i < 64; i++)
+ {
+ FSR[i] = DataLines.write(0xFF);
+ //gather function-status register
+ }
+ Workspace[2] = DataLines.write(0xFF);
+ Workspace[3] = DataLines.write(0xFF);
+ //record data CRC
+ ChipSelect.write(1);
+ DataLines.write(0xFF);
+ DataCRC(64, FSR, Workspace);
+ //calculate CRC
+ t++;
+ } while (((Workspace[0] != Workspace[2]) || (Workspace[1] != Workspace[3])) &&
+ (t < Timeout));
+ //complete CRC
+ if (t == Timeout) { return 0x01; }
+ if ((FSR[13] & 0x02) && ((FSR[16] & 0x0F) == 0x01))
+ {
+ DataLines.frequency(50000000);
+ //increase speed if function switch was successful
+ }
+ }
+ }
+
if (!Version)
{
- for (unsigned int j = 0; j < 8192; j++)
+ t = 0;
+ do
{
Command(16, 512, Workspace);
//set data-block length to 512 bytes
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
+ t++;
+ } while (Workspace[0] && (t < Timeout));
+ if (t == Timeout) { return 0x01; }
}
- ////////////////////////////////////////////implement data block sizing later
- return 1;
+
+ if (SelectCRCMode(0))
+ { return 0x01; }
+ //turn off CRCs
+
+ return 0x00;
}
void SDCard::Command(unsigned char Index, unsigned int Argument, unsigned char* Response)
{
+ CommandCRC(&Index, &Argument, Workspace);
+ //calculate command CRC
ChipSelect.write(0);
//assert chip select low to synchronize command
DataLines.write(0x40 | Index);
@@ -301,25 +637,22 @@
DataLines.write(((char*)&Argument)[1]);
DataLines.write(((char*)&Argument)[0]);
//send the argument bytes in order from MSB to LSB (mbed is little endian)
- if (CRCMode)
- { DataLines.write(CommandCRC(&Index, &Argument)); }
- else
- { DataLines.write(0x00); }
+ DataLines.write(Workspace[0]);
//send the command CRC
- for (unsigned int j = 0; j < 8192; j++)
+ t = 0;
+ do
{
Response[0] = DataLines.write(0xFF);
//clock the card high to let it run operations, the first byte will be
//busy (all high), the response will be sent some time later
- if (!(Response[0] & 0x80))
- //check for a response by testing if the first bit is low
- { break; }
- }
+ t++;
+ } while ((Response[0] & 0x80) && (t < Timeout));
+ //check for a response by testing if the first bit is low
if ((Index == 8) || (Index == 13) || (Index == 58))
{
- for (unsigned char j = 1; j < 5; j++)
+ for (unsigned char i = 1; i < 5; i++)
{
- Response[j] = DataLines.write(0xFF);
+ Response[i] = DataLines.write(0xFF);
}
//get the rest of the response
}
@@ -329,66 +662,83 @@
//clock the deselected card high to complete processing for some cards
}
-char SDCard::CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr)
+void SDCard::CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr, unsigned char* Result)
{
- return
- CommandCRCTable[
+ if (CRCMode)
+ {
+ Result[0] =
CommandCRCTable[
CommandCRCTable[
CommandCRCTable[
CommandCRCTable[
- *IndexPtr | 0x40
- ] ^ ((char*)ArgumentPtr)[3]
- ] ^ ((char*)ArgumentPtr)[2]
- ] ^ ((char*)ArgumentPtr)[1]
- ] ^ ((char*)ArgumentPtr)[0]
- ] | 0x01;
- //using a CRC table, the CRC result of a byte is equal to the byte in the table at the
- //address equal to the input byte, a message CRC is obtained by successively XORing these
- //with the message bytes
+ CommandCRCTable[
+ *IndexPtr | 0x40
+ ] ^ ((char*)ArgumentPtr)[3]
+ ] ^ ((char*)ArgumentPtr)[2]
+ ] ^ ((char*)ArgumentPtr)[1]
+ ] ^ ((char*)ArgumentPtr)[0]
+ ] | 0x01;
+ }
+ else
+ {
+ Result[0] = 0xFF;
+ }
+ //using a CRC table, the CRC result of a byte is equal to the byte
+ //in the table at the address equal to the input byte, a message CRC
+ //is obtained by successively XORing these with the message bytes
}
void SDCard::DataCRC(unsigned short Length, unsigned char* Data, unsigned char* Result)
{
- Result[1] = 0x00;
- Result[2] = 0x00;
- //initialize result carrier
- for (int i = 0; i < Length; i++)
- //step through each byte of the data to be checked
+ if (CRCMode)
{
- Result[0] = Result[1];
- //record current crc lookup for both bytes
- Result[1] = DataCRCTable[2 * Result[0]] ^ Result[2];
- //new fist byte result is XORed with old second byte result
- Result[2] = DataCRCTable[(2 * Result[0]) + 1] ^ Data[i];
- //new second byte result is XORed with new data byte
+ unsigned char Reference;
+ //store the current CRC lookup value
+ Result[0] = 0x00;
+ Result[1] = 0x00;
+ //initialize result carrier
+ for (unsigned short i = 0; i < Length; i++)
+ //step through each byte of the data to be checked
+ {
+ Reference = Result[0];
+ //record current crc lookup for both bytes
+ Result[0] = DataCRCTable[2 * Reference] ^ Result[1];
+ //new fist byte result is XORed with old second byte result
+ Result[1] = DataCRCTable[(2 * Reference) + 1] ^ Data[i];
+ //new second byte result is XORed with new data byte
+ }
+ for (unsigned char i = 0; i < 2; i++)
+ //the final result must be XORed with two 0x00 bytes.
+ {
+ Reference = Result[0];
+ Result[0] = DataCRCTable[2 * Reference] ^ Result[1];
+ Result[1] = DataCRCTable[(2 * Reference) + 1];
+ }
}
- for (int i = 0; i < 2; i++)
- //the final result must be XORed with two 0x00 bytes.
+ else
{
- Result[0] = Result[1];
- Result[1] = DataCRCTable[2 * Result[0]] ^ Result[2];
- Result[2] = DataCRCTable[(2 * Result[0]) + 1];
+ Result[0] = 0xFF;
+ Result[1] = 0xFF;
}
}
void SDCard::GenerateCRCTable(unsigned char Size, unsigned long long Generator, unsigned char* Table)
{
unsigned char Index[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
- //this will hold information from the generator; the position indicates the
- //order of the encountered 1, the value indicates its position in the
- //generator, the 9th entry indicates the number of 1's encountered
- for (int i = 0; i < 64; i++)
+ //this will hold information from the generator; the position indicates
+ //the order of the encountered 1, the value indicates its position in
+ //the generator, the 9th entry indicates the number of 1's encountered
+ for (unsigned char i = 0; i < 64; i++)
{
if (((char*)&Generator)[7] & 0x80)
{ break; }
Generator = Generator << 1;
//shift generator so that the first bit is high
}
- for (unsigned char k = 0; k < Size; k++)
+ for (unsigned char i = 0; i < Size; i++)
{
- Table[k] = 0x00;
- //initialize the first CRC bytes
+ Table[i] = 0x00;
+ //initialize table
}
for (unsigned char i = 0; i < 8; i++)
//increment through each generator bit
@@ -407,8 +757,8 @@
//we need to perform operations for each byte in the CRC result
{
Table[(Size * ((0x01 << i) + j)) + k] = Table[(Size * j) + k];
- //each new power is equal to all previous entries with an added xor
- //on the leftmost bit and each succeeding 1 on the generator
+ //each new power is equal to all previous entries with an added
+ //xor on the leftmost bit and each succeeding 1 on the generator
for (unsigned char l = 0; l < Index[8]; l++)
//increment through the encountered generator 1s
{
--- a/SDCard.h Sun Jul 18 21:26:24 2010 +0000
+++ b/SDCard.h Sat Aug 07 18:32:30 2010 +0000
@@ -3,12 +3,14 @@
#include "stdint.h"
#include "mbed.h"
+#include "FATFileSystem.h"
-class SDCard
+class SDCard : private FATFileSystem
{
private:
SPI DataLines;
DigitalOut ChipSelect;
+ //physical chip interface
unsigned char CommandCRCTable[256];
//CRC7 lookup table
unsigned char DataCRCTable[512];
@@ -17,6 +19,8 @@
//operating condition register
unsigned char CSD[16];
//card-specific data register
+ unsigned char FSR[64];
+ //function status register
bool Version;
//card version, low for 1, high for 2
bool Capacity;
@@ -24,24 +28,50 @@
bool CRCMode;
//low to disable CRCs, high to enable CRCs
unsigned char Workspace[5];
- //generic information holder
+ //all-purpose work area
+ unsigned int Timeout;
+ unsigned int t;
+ //timeout limit and counter
- bool Initialize();
- //complete all initialization operations, returns 1 if operation successful
+ unsigned char Initialize();
+ //complete all initialization operations
void Command(unsigned char Index, unsigned int Argument, unsigned char* Response);
//sends command to the SD card
- char CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr);
+ void CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr, unsigned char* Result);
void DataCRC(unsigned short Length, unsigned char* Data, unsigned char* Result);
//calculates the CRC result of the input with a lookup table
void GenerateCRCTable(unsigned char Size, unsigned long long Generator, unsigned char* Table);
//pre-calculates CRC results for efficient checking
+ virtual unsigned char disk_initialize();
+ virtual unsigned char disk_status();
+ virtual unsigned char disk_read(unsigned char* buff, unsigned long sector, unsigned char count);
+ virtual unsigned char disk_write(const unsigned char* buff, unsigned long sector, unsigned char count);
+ virtual unsigned char disk_sync();
+ virtual unsigned long disk_sector_count();
+ virtual unsigned short disk_sector_size();
+ virtual unsigned long disk_block_size();
+ //FAT system virtual function definitions, called by FAT module
+
public:
- SDCard(PinName mosi, PinName miso, PinName sck, PinName cs);
- bool Write(unsigned int Address, unsigned char* Data);
- //write data to the card
- bool Read(unsigned int Address, unsigned char* Data);
- //read data from the card
+ SDCard(PinName mosi, PinName miso, PinName sck, PinName cs, const char* DiskName);
+ //constructor requires SPI and DigitalOut pins, and a directory name
+ unsigned char Log(unsigned char Control, unsigned char Data);
+ //multipurpose raw data-logging method with three modes of operation
+ //Control description
+ // 0 synchronizes card and resets internal counter to finalize I/O operations
+ // 1 successive write input Data to a raw data byte in order starting at address 0
+ // 2 successively read and return a raw data byte in order starting at address 0
+ //return data from sync or write operations, and input data of sync or read operations are
+ //"don't care" bits
+ unsigned char Write(unsigned int Address, unsigned char* Data);
+ unsigned char Write(unsigned int Address, unsigned char SectorCount, unsigned char* Data);
+ //write data sectors to the card
+ unsigned char Read(unsigned int Address, unsigned char* Data);
+ unsigned char Read(unsigned int Address, unsigned char SectorCount, unsigned char* Data);
+ //read data sectors from the card
+ unsigned char SelectCRCMode(bool Mode);
+ //turn CRC mode on or off, default is off
};
#endif
\ No newline at end of file
--- a/main.cpp Sun Jul 18 21:26:24 2010 +0000
+++ b/main.cpp Sat Aug 07 18:32:30 2010 +0000
@@ -1,84 +1,74 @@
#include "mbed.h"
#include "stdint.h"
-
-SPI Card(p5, p6, p7);
- //mosi, miso, sck
-DigitalOut cs(p8);
- //chip select
+#include "DirHandle.h"
+#include "SDCard.h"
-unsigned char OCR[4];
- //operating condition register
-unsigned char CSD[16];
- //card-specific data register
-bool Version;
- //card version, low for 1, high for 2
-bool Capacity;
- //low for low-capacity, high for high-capacity
-bool CRCMode;
- //low to disable CRCs, high to enable CRCs
-unsigned char CommandCRCTable[256];
- //CRC7 lookup table
-unsigned char DataCRCTable[512];
- //CRC CCITT lookup table
-unsigned char Workspace[5];
- //generic information holder
+SDCard Logger(p5, p6, p7, p8, "SDCard");
-//////////////////////////////
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
Serial Computer(USBTX, USBRX);
- //for testing
-//////////////////////////////
-bool Initialize();
-bool Write(unsigned int Address, unsigned char* Data);
-bool Read(unsigned int Address, unsigned char* Data);
-void Command(unsigned char Index, unsigned int Argument, unsigned char* Response);
-char CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr);
-void DataCRC(unsigned short Length, unsigned char* Data, unsigned char* Result);
-void GenerateCRCTable(unsigned char Size, unsigned long long Generator, unsigned char* Table);
-
+Timer Clock;
int main()
{
-/////////////////////
- led1 = 0;
- led2 = 0;
- led3 = 0;
- led4 = 0;
- Computer.baud(9600);
- //for testing
- unsigned char wdata[512];
- unsigned char rdata[512];
- int testaddress = 9;
-/////////////////////
+Computer.baud(9600);
+Clock.start();
+/*/////////////////////////////
+ unsigned char wdata[5120];
+ unsigned char rdata[5120];
+*//////////////////////////////
+float workspace[16];
+
+ /*for (int i = 0; i < 300; i++)
+ { wdata[i] = 0x03; }
+ for (int i = 300; i < 550; i++)
+ { wdata[i] = 0xD5; }
+ for (int i = 550; i < 5120; i++)
+ { wdata[i] = 0x0A; }*/
+
+ Logger.SelectCRCMode(1);
- //Initialize();
+ //mkdir("/SDCard/testdir", 1023);
+ workspace[0] = Clock.read();
+ FILE *fp = fopen("/SDCard/Log.txt", "a");
+ workspace[1] = Clock.read();
+ fprintf(fp, "Start");
+ workspace[2] = Clock.read();
+ for (int i = 0; i < 1000; i++)
+ { fprintf(fp, "A"); }
+ workspace[3] = Clock.read();
+ fclose(fp);
- /*for(unsigned short j = 0; j < 512; j++)
+ Computer.printf("Time 1 = %f \n", workspace[0]);
+ Computer.printf("Time 2 = %f \n", workspace[1]);
+ Computer.printf("Time 3 = %f \n", workspace[2]);
+ Computer.printf("Time 4 = %f \n", workspace[3]);
+
+ /*DIR *d = opendir("/SDCard/testdir");
+ struct dirent *p;
+ while ((p = readdir(d)) != NULL)
{
- wdata[j] = 0x00;
- }
- Write(testaddress, wdata);
- Read(testaddress, rdata);
- for(unsigned short j = 0; j < 512; j++)
- {
- Computer.putc(rdata[j]);
+ Computer.printf("%s\n", p->d_name);
}
- for(unsigned short j = 0; j < 512; j++)
+ closedir(d);
+ remove("/SDCard/testdir/TEST.txt");*/
+ //rename("/SDCard/testdir/TEST.txt", "/SDCard/testdir/TEST2.txt");
+
+ /*for (int i = 0; i < 700; i++)
+ { Computer.putc(rdata[i]); }
+ Computer.putc(0xCC);
+ Logger.Write(7, wdata);
+ Logger.Read(7, rdata);
+ for (int i = 0; i < 512; i++)
{
- wdata[j] = 0x00 + j;
- }
- Write(testaddress, wdata);
- Read(testaddress, rdata);
- for(unsigned short j = 0; j < 512; j++)
- {
- Computer.putc(rdata[j]);
+ Computer.putc(rdata[i]);
}*/
/////////////////////
- if (Initialize())
+ if (1)
{
while(1)
{
@@ -106,442 +96,4 @@
}//failure
//for testing
/////////////////////
-}
-
-bool Initialize()
-{
- Card.frequency(100000);
- //set universal speed
- cs = 1;
- //chip select is active low
- CRCMode = 1;
- //turn cyclic redundancy checks on
-
- GenerateCRCTable(1, 137, CommandCRCTable);
- //generate the command crc lookup table
- //(generator polynomial x^7 + x^3 + 1 converts to decimal 137)
- GenerateCRCTable(2, 69665, DataCRCTable);
- //generate the command crc lookup table
- //(generator polynomial x^16 + x^12 + x^5 + 1 converts to decimal 69665)
-
- for (unsigned char j = 0; j < 16; j++)
- {
- Card.write(0xFF);
- }
- //perform specified power up sequence
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(0, 0, Workspace);
- //send command 0 to put the card into SPI mode
- if (Workspace[0] == 0x01)
- //check for idle mode
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Computer.putc(0x1F);
- Computer.putc(Workspace[0]);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(8, 426, Workspace);
- //voltage bits are 0x01 for 2.7V - 3.6V,
- //check pattern 0xAA, [00,00,01,AA] = 426
- if ((Workspace[0] == 0x05) || ((Workspace[0] == 0x01) &&
- ((Workspace[3] & 0x0F) == 0x01) && (Workspace[4] == 0xAA)))
- //check version, voltage acceptance, and check pattern
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Version = Workspace[0] == 0x01;
- //store card version
- Computer.putc(0x3F);
- Computer.putc(Workspace[0]);
- Computer.putc(Version);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(58, 0, Workspace);
- //check the OCR
- if ((Workspace[0] == 0x01) && ((Workspace[2] & 0x20) || (Workspace[2] & 0x10)))
- //check for correct operating voltage 3.3V
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Computer.putc(0x4F);
- Computer.putc(Workspace[0]);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(59, 1, Workspace);
- //send command 59 to turn on CRCs
- Computer.putc(Workspace[0]);
- if (Workspace[0] == 0x01)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Computer.putc(0x2F);
- Computer.putc(Workspace[0]);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(55, 0, Workspace);
- //specify application-specific command
- Command(41, 1073741824, Workspace);
- //specify host supports high capacity cards
- //[40,00,00,00] = 1073741824
- if (Workspace[0] == 0x00)
- //check if card is ready
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Computer.putc(0x5F);
- Computer.putc(Workspace[0]);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(58, 0, Workspace);
- //check the OCR again
- if ((Workspace[0] == 0x00) && (Workspace[1] & 0x80))
- { break; }
- if (j == 8191)
- { return 0; }
- }
- for (unsigned char j = 0; j < 4; j++)
- {
- OCR[j] = Workspace[j + 1];
- }
- //record OCR
- Capacity = (OCR[0] & 0x40) == 0x40;
- //record capacity
- Computer.putc(0x6F);
- Computer.putc(Workspace[0]);
- Computer.putc(Capacity);
-
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(9, 0, Workspace);
- //read the card-specific data register
- cs = 0;
- for (unsigned int k = 0; k < 8192; k++)
- {
- if (Card.write(0xFF) == 0xFE)
- { break; }
- }
- //get to the start-data-block token
- for (unsigned char k = 0; k < 16; k++)
- {
- CSD[k] = Card.write(0xFF);
- }
- Workspace[3] = Card.write(0xFF);
- Workspace[4] = Card.write(0xFF);
- cs = 1;
- Card.write(0xFF);
- DataCRC(16, CSD, Workspace);
- //calculate the CSD data CRC
- Workspace[0] = 0;
- for (unsigned char k = 0; k < 15; k++)
- {
- Workspace[0] = CommandCRCTable[Workspace[0]] ^ CSD[k];
- }
- Workspace[0] = CommandCRCTable[Workspace[0]] | 0x01;
- if ((Workspace[0] == CSD[15]) && (Workspace[1] == Workspace[3]) && (Workspace[2] == Workspace[4]))
- { break; }
- if (j == 8191)
- { return 0; }
- }
- Computer.putc(0x7F);
- Computer.putc(Workspace[0]);
- Computer.putc(CSD[3] & 0x7F);
-
- if (((CSD[3] & 0x07) > 2) || ((CSD[3] & 0x7F) > 0x32))
- {
- Card.frequency(25000000);
- //maximum speed is given at 25MHz
- }
- else
- {
- Workspace[0] = 1;
- for (unsigned char j = 0; j < (CSD[3] & 0x07); j++)
- {
- Workspace[0] *= 10;
- //the first three bits are a power of ten multiplier for speed
- }
- switch (CSD[3] & 0x78)
- {
- case 0x08: Card.frequency(Workspace[0] * 100000); break;
- case 0x10: Card.frequency(Workspace[0] * 120000); break;
- case 0x18: Card.frequency(Workspace[0] * 140000); break;
- case 0x20: Card.frequency(Workspace[0] * 150000); break;
- case 0x28: Card.frequency(Workspace[0] * 200000); break;
- case 0x30: Card.frequency(Workspace[0] * 250000); break;
- case 0x38: Card.frequency(Workspace[0] * 300000); break;
- case 0x40: Card.frequency(Workspace[0] * 350000); break;
- case 0x48: Card.frequency(Workspace[0] * 400000); break;
- case 0x50: Card.frequency(Workspace[0] * 450000); break;
- case 0x58: Card.frequency(Workspace[0] * 500000); break;
- case 0x60: Card.frequency(Workspace[0] * 550000); break;
- case 0x68: Card.frequency(Workspace[0] * 600000); break;
- case 0x70: Card.frequency(Workspace[0] * 700000); break;
- case 0x78: Card.frequency(Workspace[0] * 800000); break;
- default: break;
- //read the csd card speed bits and speed up card operations
- }
- }
-
- if (!Version)
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(16, 512, Workspace);
- //set data-block length to 512 bytes
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- Computer.putc(0x8F);
- Computer.putc(Workspace[0]);
- ////////////////////////////////////////////implement data block sizing later
- return 1;
-}
-
-bool Write(unsigned int Address, unsigned char* Data)
-{
- if (Capacity)
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(24, Address, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- else
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(24, Address * 512, Workspace);///////////implement block length
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- cs = 0;
- Card.write(0xFE);
- //start data block token
- for (unsigned short j = 0; j < 512; j++)
- {
- Card.write(Data[j]);
- //write the data
- }
- DataCRC(512, Data, Workspace);
- Card.write(Workspace[1]);
- Card.write(Workspace[2]);
- for (unsigned int j = 0; j < 8192; j++)
- {
- Workspace[0] = Card.write(0xFF);
- if ((Workspace[0] & 0x1F) == 0x05)
- { break; }
- }
- while (!Card.write(0xFF));
- cs = 1;
- Card.write(0xFF);
- if ((Workspace[0] & 0x1F) == 0x05)
- { return 1; }
- else
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(13, 0, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- }
- return 0;
- }
-}
-
-bool Read(unsigned int Address, unsigned char* Data)
-{
- if (Capacity)
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(17, Address, Workspace);
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- else
- {
- for (unsigned int j = 0; j < 8192; j++)
- {
- Command(17, Address * 512, Workspace);///////////implement block length
- if (Workspace[0] == 0x00)
- { break; }
- if (j == 8191)
- { return 0; }
- }
- }
- cs = 0;
- for (unsigned int j = 0; j < 8192; j++)
- {
- if (Card.write(0xFF) == 0xFE)
- { break; }
- }
- for (unsigned short j = 0; j < 512; j++)
- {
- Data[j] = Card.write(0xFF);
- }
- Workspace[3] = Card.write(0xFF);
- Workspace[4] = Card.write(0xFF);
- cs = 1;
- Card.write(0xFF);
- DataCRC(512, Data, Workspace);
- if ((Workspace[1] == Workspace[3]) && (Workspace[2] == Workspace[4]))
- { return 1; }
- else
- { return 0; }
-}
-
-void Command(unsigned char Index, unsigned int Argument, unsigned char* Response)
-{
- cs = 0;
- //assert chip select low to synchronize command
- Card.write(0x40 | Index);
- //the index is assumed valid, commands start with "01b"
- Card.write(((char*)&Argument)[3]);
- Card.write(((char*)&Argument)[2]);
- Card.write(((char*)&Argument)[1]);
- Card.write(((char*)&Argument)[0]);
- //send the argument bytes in order from MSB to LSB (mbed is little endian)
- if (CRCMode)
- { Card.write(CommandCRC(&Index, &Argument)); }
- else
- { Card.write(0x00); }
- //send the command CRC
- for (unsigned int j = 0; j < 8192; j++)
- {
- Response[0] = Card.write(0xFF);
- //clock the card high to let it run operations, the first byte will be
- //busy (all high), the response will be sent some time later
- if (!(Response[0] & 0x80))
- //check for a response by testing if the first bit is low
- { break; }
- }
- if ((Index == 8) || (Index == 13) || (Index == 58))
- {
- for (unsigned char j = 1; j < 5; j++)
- {
- Response[j] = Card.write(0xFF);
- }
- //get the rest of the response
- }
- cs = 1;
- //assert chip select high to synchronize command
- Card.write(0xFF);
- //clock the deselected card high to complete processing for some cards
-}
-
-char CommandCRC(unsigned char* IndexPtr, unsigned int* ArgumentPtr)
-{
- return
- CommandCRCTable[
- CommandCRCTable[
- CommandCRCTable[
- CommandCRCTable[
- CommandCRCTable[
- *IndexPtr | 0x40
- ] ^ ((char*)ArgumentPtr)[3]
- ] ^ ((char*)ArgumentPtr)[2]
- ] ^ ((char*)ArgumentPtr)[1]
- ] ^ ((char*)ArgumentPtr)[0]
- ] | 0x01;
- //using a CRC table, the CRC result of a byte is equal to the byte in the table at the
- //address equal to the input byte, a message CRC is obtained by successively XORing these
- //with the message bytes
-}
-
-void DataCRC(unsigned short Length, unsigned char* Data, unsigned char* Result)
-{
- Result[1] = 0x00;
- Result[2] = 0x00;
- //initialize result carrier
- for (int i = 0; i < Length; i++)
- //step through each byte of the data to be checked
- {
- Result[0] = Result[1];
- //record current crc lookup for both bytes
- Result[1] = DataCRCTable[2 * Result[0]] ^ Result[2];
- //new fist byte result is XORed with old second byte result
- Result[2] = DataCRCTable[(2 * Result[0]) + 1] ^ Data[i];
- //new second byte result is XORed with new data byte
- }
- for (int i = 0; i < 2; i++)
- //the final result must be XORed with two 0x00 bytes.
- {
- Result[0] = Result[1];
- Result[1] = DataCRCTable[2 * Result[0]] ^ Result[2];
- Result[2] = DataCRCTable[(2 * Result[0]) + 1];
- }
-}
-
-void GenerateCRCTable(unsigned char Size, unsigned long long Generator, unsigned char* Table)
-{
- unsigned char Index[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
- //this will hold information from the generator; the position indicates the
- //order of the encountered 1, the value indicates its position in the
- //generator, the 9th entry indicates the number of 1's encountered
- for (int i = 0; i < 64; i++)
- {
- if (((char*)&Generator)[7] & 0x80)
- { break; }
- Generator = Generator << 1;
- //shift generator so that the first bit is high
- }
- for (unsigned char k = 0; k < Size; k++)
- {
- Table[k] = 0x00;
- //initialize the first CRC bytes
- }
- for (unsigned char i = 0; i < 8; i++)
- //increment through each generator bit
- {
- if ((0x80 >> i) & ((unsigned char*)&Generator)[7])
- //if a 1 is encountered in the generator
- {
- Index[Index[8]] = i;
- Index[8]++;
- //record its order and location and increment the counter
- }
- for (unsigned char j = 0; j < (0x01 << i); j++)
- //each bit increases the number of xor operations by a power of 2
- {
- for (unsigned char k = 0; k < Size; k++)
- //we need to perform operations for each byte in the CRC result
- {
- Table[(Size * ((0x01 << i) + j)) + k] = Table[(Size * j) + k];
- //each new power is equal to all previous entries with an added xor
- //on the leftmost bit and each succeeding 1 on the generator
- for (unsigned char l = 0; l < Index[8]; l++)
- //increment through the encountered generator 1s
- {
- Table[(Size * ((0x01 << i) + j)) + k] ^= (((unsigned char*)&Generator)[7-k] << (i + 1 - Index[l]));
- Table[(Size * ((0x01 << i) + j)) + k] ^= (((unsigned char*)&Generator)[6-k] >> (7 - i + Index[l]));
- //xor the new bit and the new generator 1s
- }
- }
- }
- }
}
\ No newline at end of file