Parcourir la source

start testing fatfs

David Voswinkel il y a 15 ans
Parent
commit
ea792090e3

+ 1 - 1
avr/usbload/Makefile

@@ -33,7 +33,7 @@ ifeq ($(DEBUG),1)
     OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o \
                main.o usb_bulk.o uart.o fifo.o sram.o crc.o debug.o \
                dump.o timer.o watchdog.o rle.c loader.o info.o shared_memory.o \
-               command.o testing.o
+               command.o testing.o rtc.o mmc.o ff.o
 else 
     LDFLAGS =  -Wl,-u
     CFLAGS  = -Iusbdrv -I. -DDEBUG_LEVEL=0 -DNO_DEBUG -DNO_INFO

+ 81 - 0
avr/usbload/diskio.h

@@ -0,0 +1,81 @@
+/*-----------------------------------------------------------------------
+/  Low level disk interface modlue include file  R0.05   (C)ChaN, 2007
+/-----------------------------------------------------------------------*/
+
+#ifndef _DISKIO
+
+#define _READONLY	0	/* 1: Read-only mode */
+#define _USE_IOCTL	1
+
+#include "integer.h"
+
+
+/* Status of Disk Functions */
+typedef BYTE	DSTATUS;
+
+/* 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*);
+void	disk_timerproc (void);
+
+
+
+
+/* Disk Status Bits (DSTATUS) */
+
+#define STA_NOINIT		0x01	/* Drive not initialized */
+#define STA_NODISK		0x02	/* No medium in the drive */
+#define STA_PROTECT		0x04	/* Write protected */
+
+
+
+/* Command code for disk_ioctrl() */
+
+/* Generic command */
+#define CTRL_SYNC			0	/* Mandatory for write functions */
+#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
+/* MMC/SDC command */
+#define MMC_GET_TYPE		10
+#define MMC_GET_CSD			11
+#define MMC_GET_CID			12
+#define MMC_GET_OCR			13
+#define MMC_GET_SDSTAT		14
+/* ATA/CF command */
+#define ATA_GET_REV			20
+#define ATA_GET_MODEL		21
+#define ATA_GET_SN			22
+
+
+
+/* Card type flags (CardType) */
+#define CT_MMC				0x01
+#define CT_SD1				0x02
+#define CT_SD2				0x04
+#define CT_SDC				(CT_SD1|CT_SD2)
+#define CT_BLOCK			0x08
+
+
+#define _DISKIO
+#endif

+ 2936 - 0
avr/usbload/ff.c

@@ -0,0 +1,2936 @@
+/*----------------------------------------------------------------------------/
+/  FatFs - FAT file system module  R0.07a                    (C)ChaN, 2009
+/-----------------------------------------------------------------------------/
+/ FatFs module is an open source software to implement FAT file system to
+/ small embedded systems. This is a free software and is opened for education,
+/ research and commercial developments under license policy of following trems.
+/
+/  Copyright (C) 2009, 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 use 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) patition.
+/ 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 algolithm 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 plysical 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.
+/---------------------------------------------------------------------------*/
+
+#include "ff.h"			/* FatFs configurations and declarations */
+#include "diskio.h"		/* Declarations of low level disk I/O functions */
+
+
+/*--------------------------------------------------------------------------
+
+   Module Private Definitions
+
+---------------------------------------------------------------------------*/
+
+#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); }
+
+#ifndef NULL
+#define	NULL	0
+#endif
+
+
+/*--------------------------------------------------------------------------
+
+   Private Work Area
+
+---------------------------------------------------------------------------*/
+
+static
+FATFS *FatFs[_DRIVES];	/* Pointer to the file system objects (logical drives) */
+static
+WORD Fsid;				/* File system mount ID */
+
+
+#if _USE_LFN == 1	/* LFN with static LFN working buffer */
+static
+WORD LfnBuf[_MAX_LFN + 1];
+#define	NAMEBUF(sp,lp)	BYTE sp[12]; WCHAR *lp = LfnBuf
+#define INITBUF(dj,sp,lp)	dj.fn = sp; dj.lfn = lp
+
+#elif _USE_LFN > 1	/* LFN with dynamic LFN working buffer */
+#define	NAMEBUF(sp,lp)	BYTE sp[12]; WCHAR lbuf[_MAX_LFN + 1], *lp = lbuf
+#define INITBUF(dj,sp,lp)	dj.fn = sp; dj.lfn = lp
+
+#else				/* No LFN */
+#define	NAMEBUF(sp,lp)	BYTE sp[12]
+#define INITBUF(dj,sp,lp)	dj.fn = sp
+
+#endif
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Private Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* String functions                                                      */
+/*-----------------------------------------------------------------------*/
+
+/* Copy memory to memory */
+static
+void mem_cpy (void* dst, const void* src, int cnt) {
+	char *d = (char*)dst;
+	const char *s = (const char *)src;
+	while (cnt--) *d++ = *s++;
+}
+
+/* Fill memory */
+static
+void mem_set (void* dst, int val, int cnt) {
+	char *d = (char*)dst;
+	while (cnt--) *d++ = (char)val;
+}
+
+/* Compare memory to memory */
+static
+int mem_cmp (const void* dst, const void* src, int cnt) {
+	const char *d = (const char *)dst, *s = (const char *)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
+BOOL 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
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change window offset                                                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT move_window (
+	FATFS *fs,		/* File system object */
+	DWORD sector	/* Sector number to make apperance 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->drive, fs->win, wsect, 1) != RES_OK)
+				return FR_DISK_ERR;
+			fs->wflag = 0;
+			if (wsect < (fs->fatbase + fs->sects_fat)) {	/* In FAT area */
+				BYTE nf;
+				for (nf = fs->n_fats; nf >= 2; nf--) {	/* Refrect the change to FAT copy */
+					wsect += fs->sects_fat;
+					disk_write(fs->drive, fs->win, wsect, 1);
+				}
+			}
+		}
+#endif
+		if (sector) {
+			if (disk_read(fs->drive, 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->drive, 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->drive, CTRL_SYNC, (void*)NULL) != RES_OK)
+			res = FR_DISK_ERR;
+	}
+
+	return res;
+}
+#endif
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get a cluster status                                                  */
+/*-----------------------------------------------------------------------*/
+
+static
+DWORD get_cluster (	/* 0xFFFFFFFF:Disk error, 1:Interal error, Else:Cluster status */
+	FATFS *fs,		/* File system object */
+	DWORD clst		/* Cluster# to get the link information */
+)
+{
+	WORD wc, bc;
+	DWORD fsect;
+
+
+	if (clst < 2 || clst >= fs->max_clust)	/* Check cluster address range */
+		return 1;
+
+	fsect = fs->fatbase;
+	switch (fs->fs_type) {
+	case FS_FAT12 :
+		bc = (WORD)clst * 3 / 2;
+		if (move_window(fs, fsect + (bc / SS(fs)))) break;
+		wc = fs->win[bc & (SS(fs) - 1)]; bc++;
+		if (move_window(fs, fsect + (bc / SS(fs)))) break;
+		wc |= (WORD)fs->win[bc & (SS(fs) - 1)] << 8;
+		return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
+
+	case FS_FAT16 :
+		if (move_window(fs, fsect + (clst / (SS(fs) / 2)))) break;
+		return LD_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)]);
+
+	case FS_FAT32 :
+		if (move_window(fs, fsect + (clst / (SS(fs) / 4)))) break;
+		return LD_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)]) & 0x0FFFFFFF;
+	}
+
+	return 0xFFFFFFFF;	/* An error occured at the disk I/O layer */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change a cluster status                                               */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT put_cluster (
+	FATFS *fs,		/* File system object */
+	DWORD clst,		/* Cluster# to be changed (must be 2 to fs->max_clust-1) */
+	DWORD val		/* New value to mark the cluster */
+)
+{
+	WORD bc;
+	BYTE *p;
+	DWORD fsect;
+	FRESULT res;
+
+
+	if (clst < 2 || clst >= fs->max_clust) {	/* Check cluster address range */
+		res = FR_INT_ERR;
+
+	} else {
+		fsect = fs->fatbase;
+		switch (fs->fs_type) {
+		case FS_FAT12 :
+			bc = (WORD)clst * 3 / 2;
+			res = move_window(fs, fsect + (bc / SS(fs)));
+			if (res != FR_OK) break;
+			p = &fs->win[bc & (SS(fs) - 1)];
+			*p = (clst & 1) ? ((*p & 0x0F) | ((BYTE)val << 4)) : (BYTE)val;
+			bc++;
+			fs->wflag = 1;
+			res = move_window(fs, fsect + (bc / SS(fs)));
+			if (res != FR_OK) break;
+			p = &fs->win[bc & (SS(fs) - 1)];
+			*p = (clst & 1) ? (BYTE)(val >> 4) : ((*p & 0xF0) | ((BYTE)(val >> 8) & 0x0F));
+			break;
+
+		case FS_FAT16 :
+			res = move_window(fs, fsect + (clst / (SS(fs) / 2)));
+			if (res != FR_OK) break;
+			ST_WORD(&fs->win[((WORD)clst * 2) & (SS(fs) - 1)], (WORD)val);
+			break;
+
+		case FS_FAT32 :
+			res = move_window(fs, fsect + (clst / (SS(fs) / 4)));
+			if (res != FR_OK) break;
+			ST_DWORD(&fs->win[((WORD)clst * 4) & (SS(fs) - 1)], val);
+			break;
+
+		default :
+			res = FR_INT_ERR;
+		}
+		fs->wflag = 1;
+	}
+
+	return res;
+}
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Remove a cluster chain                                                */
+/*-----------------------------------------------------------------------*/
+#if !_FS_READONLY
+static
+FRESULT remove_chain (
+	FATFS *fs,			/* File system object */
+	DWORD clst			/* Cluster# to remove chain from */
+)
+{
+	FRESULT res;
+	DWORD nxt;
+
+
+	if (clst < 2 || clst >= fs->max_clust) {	/* Check cluster address range */
+		res = FR_INT_ERR;
+
+	} else {
+		res = FR_OK;
+		while (clst < fs->max_clust) {			/* Not a last link? */
+			nxt = get_cluster(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_cluster(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
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* 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, mcl;
+
+
+	mcl = fs->max_clust;
+	if (clst == 0) {		/* Create new chain */
+		scl = fs->last_clust;			/* Get suggested start point */
+		if (scl == 0 || scl >= mcl) scl = 1;
+	}
+	else {					/* Stretch existing chain */
+		cs = get_cluster(fs, clst);		/* Check the cluster status */
+		if (cs < 2) return 1;			/* It is an invalid cluster */
+		if (cs < mcl) return cs;		/* It is already followed by next cluster */
+		scl = clst;
+	}
+
+	ncl = scl;				/* Start cluster */
+	for (;;) {
+		ncl++;							/* Next cluster */
+		if (ncl >= mcl) {				/* Wrap around */
+			ncl = 2;
+			if (ncl > scl) return 0;	/* No free custer */
+		}
+		cs = get_cluster(fs, ncl);		/* Get the cluster status */
+		if (cs == 0) break;				/* Found a free cluster */
+		if (cs == 0xFFFFFFFF || cs == 1)/* An error occured */
+			return cs;
+		if (ncl == scl) return 0;		/* No free custer */
+	}
+
+	if (put_cluster(fs, ncl, 0x0FFFFFFF))	/* Mark the new cluster "in use" */
+		return 0xFFFFFFFF;
+	if (clst != 0) {						/* Link it to previous one if needed */
+		if (put_cluster(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#                                             */
+/*-----------------------------------------------------------------------*/
+
+static
+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->max_clust - 2)) return 0;		/* Invalid cluster# */
+	return clst * fs->csize + fs->database;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Seek directory index                                                  */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_seek (
+	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->max_clust)	/* Check start cluster range */
+		return FR_INT_ERR;
+
+	if (clst == 0) {	/* Static table */
+		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);
+	}
+	else {				/* Dynamic table */
+		ic = SS(dj->fs) / 32 * dj->fs->csize;	/* Indexes per cluster */
+		while (idx >= ic) {	/* Follow cluster chain */
+			clst = get_cluster(dj->fs, clst);			/* Get next cluster */
+			if (clst == 0xFFFFFFFF) return FR_DISK_ERR;	/* Disk error */
+			if (clst < 2 || clst >= dj->fs->max_clust)	/* 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);
+	}
+	dj->dir = dj->fs->win + (idx % (SS(dj->fs) / 32)) * 32;
+
+	return FR_OK;	/* Seek succeeded */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Move directory index next                                             */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_next (	/* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not streach */
+	DIR *dj,		/* Pointer to directory object */
+	BOOL streach	/* FALSE: Do not streach table, TRUE: Streach 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->sclust == 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_cluster(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->max_clust) {				/* When it reached end of dinamic table */
+#if !_FS_READONLY
+					BYTE c;
+					if (!streach) return FR_NO_FILE;			/* When do not streach, report EOT */
+					clst = create_chain(dj->fs, dj->clust);		/* Streach 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 streached 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;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* 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
+BOOL test_lfn (			/* TRUE:Matched, FALSE: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 wc1, wc2;
+
+
+	i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13;	/* Offset in the LFN buffer */
+	s = 0;
+	do {
+		if (i >= _MAX_LFN) return FALSE;	/* Out of buffer range? */
+		wc1 = LD_WORD(dir+LfnOfs[s]);		/* Get both characters to compare */
+		wc2 = lfnbuf[i++];
+		if (IsLower(wc1)) wc1 -= 0x20;		/* Compare it (ignore case) */
+		if (IsLower(wc2)) wc2 -= 0x20;
+		if (wc1 != wc2) return FALSE;
+	} while (++s < 13 && wc1);				/* Repeat until last char or a NUL char is processed */
+
+	return TRUE;							/* The LFN entry matched */
+}
+
+
+
+static
+BOOL pick_lfn (			/* TRUE:Succeeded, FALSE:Buffer overflow */
+	WCHAR *lfnbuf,		/* Pointer to the Unicode-LFN buffer */
+	BYTE *dir			/* Pointer to the directory entry */
+)
+{
+	int i, s;
+	WCHAR wchr;
+
+
+	i = ((dir[LDIR_Ord] & 0xBF) - 1) * 13;	/* Offset in the LFN buffer */
+	s = 0;
+	do {
+		wchr = LD_WORD(dir+LfnOfs[s]);		/* Get an LFN char */
+		if (!wchr) break;					/* End of LFN? */
+		if (i >= _MAX_LFN) return FALSE;	/* Buffer overflow */
+		lfnbuf[i++] = wchr;					/* Store it */
+	} while (++s < 13);						/* Repeat until last char is copied */
+	if (dir[LDIR_Ord] & 0x40) lfnbuf[i] = 0;	/* Put terminator if last LFN entry */
+
+	return TRUE;
+}
+
+
+#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 wchr;
+
+
+	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;				/* Offset in the LFN buffer */
+	s = wchr = 0;
+	do {
+		if (wchr != 0xFFFF) wchr = lfnbuf[i++];	/* Get an effective char */
+		ST_WORD(dir+LfnOfs[s], wchr);	/* Put it */
+		if (!wchr) wchr = 0xFFFF;	/* Padding chars following last char */
+	} while (++s < 13);
+	if (wchr == 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 genartated SFN */
+	const BYTE *src,	/* Pointer to source SFN to be modified */
+	const WCHAR *lfn,	/* Pointer to LFN */
+	WORD num			/* Sequense number */
+)
+{
+	char ns[8];
+	int i, j;
+
+
+	mem_cpy(dst, src, 11);
+
+	if (num > 5) {	/* On many collisions, generate a hash number instead of sequencial number */
+		do num = (num >> 1) + (num << 15) + (WORD)*lfn++; while (*lfn);
+	}
+
+	/* itoa */
+	i = 7;
+	do {
+		ns[i--] = (num % 10) + '0';
+		num /= 10;
+	} while (num);
+	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
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Find an object in the directory                                       */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT dir_find (
+	DIR *dj			/* Pointer to the directory object linked to the file name */
+)
+{
+	FRESULT res;
+	BYTE a, c, lfen, ord, sum, *dir;
+
+
+	res = dir_seek(dj, 0);			/* Rewind directory object */
+	if (res != FR_OK) return res;
+
+	ord = sum = 0xFF; lfen = *(dj->fn+11) & 1;
+	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 */
+		a = dir[DIR_Attr] & AM_MASK;
+#if _USE_LFN	/* LFN configuration */
+		if (c == 0xE5 || 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 (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 LFN validity. Compare LFN if it is out of 8.3 format */
+					ord = (c == ord && sum == dir[LDIR_Chksum] && (!lfen || test_lfn(dj->lfn, dir))) ? ord - 1 : 0xFF;
+				}
+			} else {					/* An SFN entry is found */
+				if (ord || sum != sum_sfn(dir)) {	/* Did not LFN match? */
+					dj->lfn_idx = 0xFFFF;
+					ord = 0xFF;
+				}
+				if (lfen) {				/* Match LFN if it is out of 8.3 format */
+					if (ord == 0) break;
+				} else {				/* Match SFN if LFN is in 8.3 format */
+					if (!mem_cmp(dir, dj->fn, 11)) break;
+				}
+			}
+		}
+#else	/* Non LFN configuration */
+		if (c != 0xE5 && c != '.' && !(a & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
+			break;
+#endif
+		res = dir_next(dj, FALSE);				/* Next entry */
+	} while (res == FR_OK);
+
+	return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read an object from the directory                                     */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 2
+static
+FRESULT dir_read (
+	DIR *dj			/* Pointer to the directory object to store read object name */
+)
+{
+	FRESULT res;
+	BYTE a, c, ord, sum, *dir;
+
+
+	ord = sum = 0xFF;
+	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 */
+		a = dir[DIR_Attr] & AM_MASK;
+#if _USE_LFN	/* LFN configuration */
+		if (c == 0xE5 || 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 entry? */
+					dj->lfn_idx = 0xFFFF;		/* No LFN. */
+				break;
+			}
+		}
+#else	/* Non LFN configuration */
+		if (c != 0xE5 && c != '.' && !(a & AM_VOL))	/* Is it a valid entry? */
+			break;
+#endif
+		res = dir_next(dj, FALSE);				/* 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 */
+	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 (sn[11] & 1) {		/* When LFN is out of 8.3 format, generate a numbered name */
+		fn[11] = 0; dj->lfn = NULL;			/* 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[11] = sn[11]; dj->lfn = lfn;
+	}
+	if (sn[11] & 2) {		/* When eliminate LFN, reserve only an SFN entry. */
+		ne = 1;
+	} else {				/* Otherwise reserve an SFN + LFN entries. */
+		for (ne = 0; lfn[ne]; ne++) ;
+		ne = (ne + 25) / 13;
+	}
+
+	/* Reserve contiguous entries */
+	res = dir_seek(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 contigulus entry */
+			if (++n == ne) break;	/* A contiguous entry that requiered count is found */
+		} else {
+			n = 0;					/* Not a blank entry. Restart to search */
+		}
+		res = dir_next(dj, TRUE);	/* Next entry with table streach */
+	} while (res == FR_OK);
+
+	if (res == FR_OK && ne > 1) {	/* Initialize LFN entry if needed */
+		res = dir_seek(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, FALSE);	/* Next entry */
+			} while (res == FR_OK && --ne);
+		}
+	}
+
+#else	/* Non LFN configuration */
+	res = dir_seek(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, TRUE);		/* Next entry with table streach */
+		} 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 */
+			dir[DIR_NTres] = *(dj->fn+11) & 0x18;	/* Put NT flag */
+			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 */
+	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_seek(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 SFN is deleted, all entries of the object is deleted. */
+			res = dir_next(dj, FALSE);		/* Next entry */
+		} while (res == FR_OK);
+		if (res == FR_NO_FILE) res = FR_INT_ERR;
+	}
+
+#else			/* Non LFN configuration */
+	res = dir_seek(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 (
+	DIR *dj,			/* Pointer to the directory object */
+	const char **path	/* Pointer to pointer to the segment in the path string */
+)
+{
+#if _USE_LFN
+	BYTE c, b, cf, *sfn;
+	WCHAR w, *lfn;
+	int i, ni, si, di;
+	const char *p;
+
+	/* Create LFN in Unicode */
+	si = di = 0;
+	p = *path;
+	lfn = dj->lfn;
+	for (;;) {
+		w = (BYTE)p[si++];				/* Get a character */
+		if (w < ' ' || w == '/' || w == '\\') break;	/* Break on end of segment */
+		if (IsDBCS1(w)) {				/* If it is DBC 1st byte */
+			c = p[si++];				/* Get 2nd byte */
+			if (!IsDBCS2(c))			/* Reject invalid DBC */
+				return FR_INVALID_NAME;
+			w = (w << 8) + c;
+		} else {
+			if (chk_chr("\"*:<>\?|\x7F", w))	/* Reject unallowable chars for LFN */
+				return FR_INVALID_NAME;
+		}
+		w = ff_convert(w, 1);			/* Convert OEM to Unicode, store it */
+		if (!w || di >= _MAX_LFN)		/* Reject invalid code or too long name */
+			return FR_INVALID_NAME;
+		lfn[di++] = w;
+	}
+	*path = &p[si];						/* Rerurn pointer to the next segment */
+	cf = (w < ' ') ? 4 : 0;				/* Set last segment flag if end of path */
+
+	while (di) {						/* Strip trailing spaces and dots */
+		w = lfn[di - 1];
+		if (w != ' ' && w != '.') break;
+		di--;
+	}
+	if (!di) return FR_INVALID_NAME;	/* Reject null string */
+
+	lfn[di] = 0;						/* LFN is created */
+
+	/* Create SFN in directory form */
+	sfn = dj->fn;
+	mem_set(sfn, ' ', 11);
+	for (si = 0; lfn[si] == ' ' || lfn[si] == '.'; si++) ;	/* Strip leading spaces and dots */
+	if (si) cf |= 1;
+	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 == 0) break;				/* Break when enf of the LFN */
+		if (w == ' ' || (w == '.' && si != di)) {	/* Remove spaces and dots */
+			cf |= 1; continue;
+		}
+		if (i >= ni || si == di) {		/* Here is extension or end of SFN */
+			if (ni == 11) {				/* Extension is longer than 3 bytes */
+				cf |= 1; break;
+			}
+			if (si != di) cf |= 1;		/* File name is longer than 8 bytes */
+			if (si > di) break;			/* No extension */
+			si = di; i = 8; ni = 11;	/* Enter extension section */
+			b <<= 2; continue;
+		}
+		w = ff_convert(w, 0);			/* Unicode -> OEM code */
+		if (w >= 0x80) cf |= 0x20;		/* If there is any extended char, force create an LFN */
+		if (w >= 0x100) {				/* Double byte char */
+			if (i >= ni - 1) {
+				cf |= 1; i = ni; continue;
+			}
+			sfn[i++] = (BYTE)(w >> 8);
+		} else {						/* Single byte char */
+			if (chk_chr("+,;[=]", w)) {	/* Replace unallowable chars for SFN */
+				w = '_'; cf |= 1;
+			} else {
+				if (IsUpper(w)) {		/* Large capital */
+					b |= 2;
+				} else {
+					if (IsLower(w)) {	/* Small capital */
+						b |= 1; w -= 0x20;
+					}
+				}
+			}
+		}
+		sfn[i++] = (BYTE)w;
+	}
+	if (sfn[0] == 0xE5) sfn[0] = 0x05;	/* When first char collides with 0xE5, replace it with 0x05 */
+
+	if (ni == 8) b <<= 2;
+	if ((cf & 0x21) == 0) {	/* When LFN is in 8.3 format without extended char, NT flags are created */
+		if ((b & 0x03) == 0x01) cf |= 0x10;	/* NT flag (Extension has only small capital) */
+		if ((b & 0x0C) == 0x04) cf |= 0x08;	/* NT flag (Filename has only small capital) */
+		if ((b & 0x0C) != 0x0C && (b & 0x03) != 0x03) cf |= 2;	/* Eliminate LFN when non composite capitals */
+	}
+
+	sfn[11] = cf;		/* SFN is created */
+
+#else
+	BYTE c, d, b, *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;
+	for (;;) {
+		c = 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) b |= 3;			/* If there is any extended char, eliminate NT flag */
+		if (IsDBCS1(c)) {				/* If it is DBC 1st byte */
+			d = 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 {
+			if (chk_chr(" +,;[=]\"*:<>\?|\x7F", c))	/* Reject unallowable chrs for SFN */
+				return FR_INVALID_NAME;
+			if (IsUpper(c)) {
+				b |= 2;
+			} else {
+				if (IsLower(c)) {
+					b |= 1; c -= 0x20;
+				}
+			}
+			sfn[i++] = c;
+		}
+	}
+	*path = &p[si];						/* Rerurn pointer to the next segment */
+	c = (c < ' ') ? 4 : 0;				/* Set last segment flag if end of path */
+
+	if (!i) return FR_INVALID_NAME;		/* Reject null 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 |= 0x10;	/* NT flag (Extension has only small capital) */
+	if ((b & 0x0C) == 0x04) c |= 0x08;	/* NT flag (Filename has only small capital) */
+
+	sfn[11] = c;		/* Store NT flag, File name is created */
+#endif
+
+	return FR_OK;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get file information from directory entry                             */
+/*-----------------------------------------------------------------------*/
+#if _FS_MINIMIZE <= 1
+static
+void get_fileinfo (		/* No return code */
+	DIR *dj,			/* Pointer to the directory object */
+	FILINFO *fno	 	/* Pointer to store the file information */
+)
+{
+	int i;
+	BYTE c, nt, *dir;
+	char *p;
+
+
+	p = fno->fname;
+	if (dj->sect) {
+		dir = dj->dir;
+		nt = dir[DIR_NTres];		/* NT flag */
+		for (i = 0; i < 8; i++) {	/* Copy file name body */
+			c = dir[i];
+			if (c == ' ') break;
+			if (c == 0x05) c = 0xE5;
+			if ((nt & 0x08) && IsUpper(c)) c += 0x20;
+			*p++ = c;
+		}
+		if (dir[8] != ' ') {		/* Copy file name extension */
+			*p++ = '.';
+			for (i = 8; i < 11; i++) {
+				c = dir[i];
+				if (c == ' ') break;
+				if ((nt & 0x10) && IsUpper(c)) c += 0x20;
+				*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
+	p = fno->lfname;
+	if (p) {
+		WCHAR wchr, *lfn;
+
+		i = 0;
+		if (dj->sect && dj->lfn_idx != 0xFFFF) {/* Get LFN if available */
+			lfn = dj->lfn;
+			while ((wchr = *lfn++) != 0) {		/* Get an LFN char */
+				wchr = ff_convert(wchr, 0);		/* Unicode -> OEM code */
+				if (!wchr) { i = 0; break; }	/* Conversion error, no LFN */
+				if (_DF1S && wchr >= 0x100)		/* Put 1st byte if it is a DBC */
+					p[i++] = (char)(wchr >> 8);
+				p[i++] = (char)wchr;
+				if (i >= fno->lfsize) { i = 0; break; }	/* Buffer overrun, no LFN */
+			}
+		}
+		p[i] = 0;	/* Terminator */
+	}
+#endif
+}
+#endif /* _FS_MINIMIZE <= 1 */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Follow a file path                                                    */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT follow_path (	/* FR_OK(0): successful, !=0: error code */
+	DIR *dj,			/* Directory object to return last directory and found object */
+	const char *path	/* Full-path string to find a file or directory */
+)
+{
+	FRESULT res;
+	BYTE *dir, last;
+
+
+	if (*path == '/' || *path == '\\' ) path++;	/* Strip heading separator */
+
+	dj->sclust =						/* Set start directory (root dir) */
+		(dj->fs->fs_type == FS_FAT32) ? dj->fs->dirbase : 0;
+
+	if ((BYTE)*path < ' ') {			/* Null path means the root directory */
+		res = dir_seek(dj, 0);
+		dj->dir = NULL;
+
+	} else {							/* Follow path */
+		for (;;) {
+			res = create_name(dj, &path);	/* Get a segment */
+			if (res != FR_OK) break;
+			res = dir_find(dj);				/* Find it */
+			last = *(dj->fn+11) & 4;
+			if (res != FR_OK) {				/* Could not find the object */
+				if (res == FR_NO_FILE && !last)
+					res = FR_NO_PATH;
+				break;
+			}
+			if (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 boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3: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->drive, 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 (!mem_cmp(&fs->win[BS_FilSysType], "FAT", 3))		/* Check FAT signature */
+		return 0;
+	if (!mem_cmp(&fs->win[BS_FilSysType32], "FAT32", 5) && !(fs->win[BPB_ExtFlags] & 0x80))
+		return 0;
+
+	return 1;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Make sure that the file system is valid                               */
+/*-----------------------------------------------------------------------*/
+
+static
+FRESULT auto_mount (	/* FR_OK(0): successful, !=0: any error occured */
+	const char **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 */
+)
+{
+	FRESULT res;
+	BYTE vol, fmt, *tbl;
+	DSTATUS stat;
+	DWORD bsect, fsize, tsect, mclst;
+	const char *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] == ':') {
+		p += 2;					/* Found a drive number, get and strip it */
+		*path = p;				/* Return pointer to the path name */
+	} else {
+		vol = 0;				/* No drive number is given, use drive number 0 as default */
+	}
+
+	/* Check if the logical drive number is valid or not */
+	if (vol >= _DRIVES) return FR_INVALID_DRIVE;	/* Is the drive number valid? */
+	*rfs = fs = FatFs[vol];					/* Returen pointer to the corresponding file system object */
+	if (!fs) return FR_NOT_ENABLED;			/* Is the file system object registered? */
+
+	ENTER_FF(fs);				/* Lock file system */
+
+	if (fs->fs_type) {						/* If the logical drive has been mounted */
+		stat = disk_status(fs->drive);
+		if (!(stat & STA_NOINIT)) {			/* and 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 re-mounted. Following code attempts to mount the volume */
+
+	fs->fs_type = 0;					/* Clear the file system object */
+	fs->drive = LD2PD(vol);				/* Bind the logical drive and a physical drive */
+	stat = disk_initialize(fs->drive);	/* 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->drive, 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 write protection if needed */
+		return FR_WRITE_PROTECTED;
+#endif
+	/* Search FAT partition on the drive */
+	fmt = check_fs(fs, bsect = 0);		/* Check sector 0 as an SFD format */
+	if (fmt == 1) {						/* Not an FAT boot record, it may be patitioned */
+		/* Check a 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 || LD_WORD(fs->win+BPB_BytsPerSec) != SS(fs))	/* No valid FAT patition is found */
+		return FR_NO_FILESYSTEM;
+
+	/* Initialize the file system object */
+	fsize = LD_WORD(fs->win+BPB_FATSz16);				/* Number of sectors per FAT */
+	if (!fsize) fsize = LD_DWORD(fs->win+BPB_FATSz32);
+	fs->sects_fat = fsize;
+	fs->n_fats = fs->win[BPB_NumFATs];					/* Number of FAT copies */
+	fsize *= fs->n_fats;								/* (Number of sectors in FAT area) */
+	fs->fatbase = bsect + LD_WORD(fs->win+BPB_RsvdSecCnt); /* FAT start sector (lba) */
+	fs->csize = fs->win[BPB_SecPerClus];				/* Number of sectors per cluster */
+	fs->n_rootdir = LD_WORD(fs->win+BPB_RootEntCnt);	/* Nmuber of root directory entries */
+	tsect = LD_WORD(fs->win+BPB_TotSec16);				/* Number of sectors on the file system */
+	if (!tsect) tsect = LD_DWORD(fs->win+BPB_TotSec32);
+	fs->max_clust = mclst = (tsect						/* Last cluster# + 1 */
+		- LD_WORD(fs->win+BPB_RsvdSecCnt) - fsize - fs->n_rootdir / (SS(fs)/32)
+		) / fs->csize + 2;
+
+	fmt = FS_FAT12;										/* Determine the FAT sub type */
+	if (mclst >= 0xFF7) fmt = FS_FAT16;				/* Number of clusters >= 0xFF5 */
+	if (mclst >= 0xFFF7) fmt = FS_FAT32;			/* Number of clusters >= 0xFFF5 */
+
+	if (fmt == FS_FAT32)
+		fs->dirbase = LD_DWORD(fs->win+BPB_RootClus);	/* Root directory start cluster */
+	else
+		fs->dirbase = fs->fatbase + fsize;				/* Root directory start sector (lba) */
+	fs->database = fs->fatbase + fsize + fs->n_rootdir / (SS(fs)/32);	/* Data start sector (lba) */
+
+#if !_FS_READONLY
+	/* Initialize allocation information */
+	fs->free_clust = 0xFFFFFFFF;
+	fs->wflag = 0;
+	/* Get fsinfo if needed */
+	if (fmt == FS_FAT32) {
+		fs->fsi_sector = bsect + LD_WORD(fs->win+BPB_FSInfo);
+		fs->fsi_flag = 0;
+		if (disk_read(fs->drive, 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->winsect = 0;
+	fs->fs_type = fmt;			/* FAT syb-type */
+	fs->id = ++Fsid;			/* File system mount ID */
+	res = FR_OK;
+
+	return res;
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* 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->drive) & STA_NOINIT)
+		return FR_NOT_READY;
+
+	return FR_OK;
+}
+
+
+
+
+/*--------------------------------------------------------------------------
+
+   Public Functions
+
+--------------------------------------------------------------------------*/
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Mount/Unmount a Locical 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 state */
+
+	if (rfs) {
+#if _FS_REENTRANT					/* Discard sync object of the current volume */
+		if (!ff_del_syncobj(fs->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 (
+	FIL *fp,			/* Pointer to the blank file object */
+	const char *path,	/* Pointer to the file name */
+	BYTE mode			/* Access mode and file open mode flags */
+)
+{
+	FRESULT res;
+	DIR dj;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir;
+
+
+	fp->fs = NULL;		/* Clear file object */
+#if !_FS_READONLY
+	mode &= (FA_READ | FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW);
+	res = auto_mount(&path, &dj.fs, (BYTE)(mode & (FA_WRITE | FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)));
+#else
+	mode &= FA_READ;
+	res = auto_mount(&path, &dj.fs, 0);
+#endif
+	if (res != FR_OK) LEAVE_FF(dj.fs, res);
+	INITBUF(dj, sfn, lfn);
+	res = follow_path(&dj, path);	/* Follow the file path */
+
+#if !_FS_READONLY
+	/* Create or Open a file */
+	if (mode & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS | FA_CREATE_NEW)) {
+		DWORD ps, cl;
+
+		if (res != FR_OK) {		/* No file, create new */
+			if (res == FR_NO_FILE)
+				res = dir_register(&dj);
+			if (res != FR_OK) LEAVE_FF(dj.fs, res);
+			mode |= FA_CREATE_ALWAYS;
+			dir = dj.dir;
+		}
+		else {					/* Any object is already existing */
+			if (mode & FA_CREATE_NEW)			/* Cannot create new */
+				LEAVE_FF(dj.fs, FR_EXIST);
+			dir = dj.dir;
+			if (!dir || (dir[DIR_Attr] & (AM_RDO | AM_DIR)))	/* Cannot overwrite it (R/O or DIR) */
+				LEAVE_FF(dj.fs, FR_DENIED);
+			if (mode & FA_CREATE_ALWAYS) {		/* Resize it to zero if needed */
+				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);
+				ST_DWORD(dir+DIR_FileSize, 0);	/* size = 0 */
+				dj.fs->wflag = 1;
+				ps = dj.fs->winsect;			/* Remove the cluster chain */
+				if (cl) {
+					res = remove_chain(dj.fs, cl);
+					if (res) LEAVE_FF(dj.fs, res);
+					dj.fs->last_clust = cl - 1;	/* Reuse the cluster hole */
+				}
+				res = move_window(dj.fs, ps);
+				if (res != FR_OK) LEAVE_FF(dj.fs, res);
+			}
+		}
+		if (mode & FA_CREATE_ALWAYS) {
+			dir[DIR_Attr] = 0;					/* Reset attribute */
+			ps = get_fattime();
+			ST_DWORD(dir+DIR_CrtTime, ps);		/* Created time */
+			dj.fs->wflag = 1;
+			mode |= FA__WRITTEN;				/* Set file changed flag */
+		}
+	}
+	/* Open an existing file */
+	else {
+#endif /* !_FS_READONLY */
+		if (res != FR_OK) LEAVE_FF(dj.fs, res);	/* Follow failed */
+		dir = dj.dir;
+		if (!dir || (dir[DIR_Attr] & AM_DIR))	/* It is a directory */
+			LEAVE_FF(dj.fs, FR_NO_FILE);
+#if !_FS_READONLY
+		if ((mode & FA_WRITE) && (dir[DIR_Attr] & AM_RDO)) /* R/O violation */
+			LEAVE_FF(dj.fs, FR_DENIED);
+	}
+	fp->dir_sect = dj.fs->winsect;		/* Pointer to the directory entry */
+	fp->dir_ptr = dj.dir;
+#endif
+	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; fp->csect = 255;		/* File pointer */
+	fp->dsect = 0;
+	fp->fs = dj.fs; fp->id = dj.fs->id;	/* Owner file system object of the file */
+
+	LEAVE_FF(dj.fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read File                                                             */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_read (
+	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 *rbuff = buff;
+
+
+	*br = 0;
+
+	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? */
+			if (fp->csect >= fp->fs->csize) {		/* On the cluster boundary? */
+				clst = (fp->fptr == 0) ?			/* On the top of the file? */
+					fp->org_clust : get_cluster(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 */
+				fp->csect = 0;						/* Reset sector offset in the cluster */
+			}
+			sect = clust2sect(fp->fs, fp->curr_clust);	/* Get current sector */
+			if (!sect) ABORT(fp->fs, FR_INT_ERR);
+			sect += fp->csect;
+			cc = btr / SS(fp->fs);					/* When remaining bytes >= sector size, */
+			if (cc) {								/* Read maximum contiguous sectors directly */
+				if (fp->csect + cc > fp->fs->csize)	/* Clip at cluster boundary */
+					cc = fp->fs->csize - fp->csect;
+				if (disk_read(fp->fs->drive, rbuff, sect, (BYTE)cc) != RES_OK)
+					ABORT(fp->fs, FR_DISK_ERR);
+				fp->csect += (BYTE)cc;				/* Next sector address in the cluster */
+				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->drive, fp->buf, fp->dsect, 1) != RES_OK)
+					ABORT(fp->fs, FR_DISK_ERR);
+				fp->flag &= (BYTE)~FA__DIRTY;
+			}
+#endif
+			if (fp->dsect != sect) {			/* Fill sector buffer with file data */
+				if (disk_read(fp->fs->drive, fp->buf, sect, 1) != RES_OK)
+					ABORT(fp->fs, FR_DISK_ERR);
+			}
+#endif
+			fp->dsect = sect;
+			fp->csect++;							/* Next sector address in the cluster */
+		}
+		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 (
+	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 = buff;
+
+
+	*bw = 0;
+
+	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? */
+			if (fp->csect >= fp->fs->csize) {		/* 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 streach 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 */
+				fp->csect = 0;						/* Reset sector address in the 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->drive, fp->buf, fp->dsect, 1) != RES_OK)
+					ABORT(fp->fs, FR_DISK_ERR);
+				fp->flag &= (BYTE)~FA__DIRTY;
+			}
+#endif
+			sect = clust2sect(fp->fs, fp->curr_clust);	/* Get current sector */
+			if (!sect) ABORT(fp->fs, FR_INT_ERR);
+			sect += fp->csect;
+			cc = btw / SS(fp->fs);					/* When remaining bytes >= sector size, */
+			if (cc) {								/* Write maximum contiguous sectors directly */
+				if (fp->csect + cc > fp->fs->csize)	/* Clip at cluster boundary */
+					cc = fp->fs->csize - fp->csect;
+				if (disk_write(fp->fs->drive, wbuff, sect, (BYTE)cc) != RES_OK)
+					ABORT(fp->fs, FR_DISK_ERR);
+				fp->csect += (BYTE)cc;				/* Next sector address in the cluster */
+				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->drive, fp->buf, sect, 1) != RES_OK)
+						ABORT(fp->fs, FR_DISK_ERR);
+			}
+#endif
+			fp->dsect = sect;
+			fp->csect++;							/* Next sector address in the cluster */
+		}
+		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 (
+	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->drive, fp->buf, fp->dsect, 1) != RES_OK)
+					LEAVE_FF(fp->fs, FR_DISK_ERR);
+				fp->flag &= (BYTE)~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();					/* Updated time */
+				ST_DWORD(dir+DIR_WrtTime, tim);
+				fp->flag &= (BYTE)~FA__WRITTEN;
+				fp->fs->wflag = 1;
+				res = sync(fp->fs);
+			}
+		}
+	}
+
+	LEAVE_FF(fp->fs, res);
+}
+
+#endif /* !_FS_READONLY */
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Close File                                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_close (
+	FIL *fp		/* Pointer to the file object to be closed */
+)
+{
+	FRESULT res;
+
+
+#if _FS_READONLY
+	res = validate(fp->fs, fp->id);
+	if (res == FR_OK) fp->fs = NULL;
+	LEAVE_FF(fp->fs, res);
+#else
+	res = f_sync(fp);
+	if (res == FR_OK) fp->fs = NULL;
+	return res;
+#endif
+}
+
+
+
+
+#if _FS_MINIMIZE <= 2
+/*-----------------------------------------------------------------------*/
+/* Seek File R/W Pointer                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_lseek (
+	FIL *fp,		/* Pointer to the file object */
+	DWORD ofs		/* File pointer from top of file */
+)
+{
+	FRESULT res;
+	DWORD clst, bcs, nsect, ifptr;
+
+
+	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 (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 = 0; fp->csect = 255;
+	nsect = 0;
+	if (ofs > 0) {
+		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 streached if in write mode */
+					if (clst == 0) {				/* When disk gets full, clip file size */
+						ofs = bcs; break;
+					}
+				} else
+#endif
+					clst = get_cluster(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->max_clust) ABORT(fp->fs, FR_INT_ERR);
+				fp->curr_clust = clst;
+				fp->fptr += bcs;
+				ofs -= bcs;
+			}
+			fp->fptr += ofs;
+			fp->csect = (BYTE)(ofs / SS(fp->fs));	/* Sector offset in the cluster */
+			if (ofs % SS(fp->fs)) {
+				nsect = clust2sect(fp->fs, clst);	/* Current sector */
+				if (!nsect) ABORT(fp->fs, FR_INT_ERR);
+				nsect += fp->csect;
+				fp->csect++;
+			}
+		}
+	}
+	if (nsect && nsect != fp->dsect && fp->fptr % SS(fp->fs)) {
+#if !_FS_TINY
+#if !_FS_READONLY
+		if (fp->flag & FA__DIRTY) {			/* Write-back dirty buffer if needed */
+			if (disk_write(fp->fs->drive, fp->buf, fp->dsect, 1) != RES_OK)
+				ABORT(fp->fs, FR_DISK_ERR);
+			fp->flag &= (BYTE)~FA__DIRTY;
+		}
+#endif
+		if (disk_read(fp->fs->drive, 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 (
+	DIR *dj,			/* Pointer to directory object to create */
+	const char *path	/* Pointer to the directory path */
+)
+{
+	FRESULT res;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir;
+
+
+	res = auto_mount(&path, &dj->fs, 0);
+	if (res == FR_OK) {
+		INITBUF((*dj), sfn, lfn);
+		res = follow_path(dj, path);			/* Follow the path to the directory */
+		if (res == FR_OK) {						/* Follow completed */
+			dir = dj->dir;
+			if (dir) {							/* It is not the root 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;
+				}
+			} else {							/* It is the root dir */
+				dj->sclust = (dj->fs->fs_type == FS_FAT32) ? dj->fs->dirbase : 0;
+			}
+			if (res == FR_OK) res = dir_seek(dj, 0);
+			dj->id = dj->fs->id;
+		} else {
+			if (res == FR_NO_FILE) res = FR_NO_PATH;
+		}
+	}
+
+	LEAVE_FF(dj->fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Directory Entry in Sequense                                      */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_readdir (
+	DIR *dj,			/* Pointer to the open directory object */
+	FILINFO *fno		/* Pointer to file information to return */
+)
+{
+	FRESULT res;
+	NAMEBUF(sfn, lfn);
+
+
+	res = validate(dj->fs, dj->id);			/* Check validity of the object */
+	if (res == FR_OK) {
+		INITBUF((*dj), sfn, lfn);
+		if (!fno) {
+			res = dir_seek(dj, 0);
+		} else {
+			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, FALSE);	/* Increment index for next */
+				if (res == FR_NO_FILE) {
+					dj->sect = 0;
+					res = FR_OK;
+				}
+			}
+		}
+	}
+
+	LEAVE_FF(dj->fs, res);
+}
+
+
+
+#if _FS_MINIMIZE == 0
+/*-----------------------------------------------------------------------*/
+/* Get File Status                                                       */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_stat (
+	const char *path,	/* Pointer to the file path */
+	FILINFO *fno		/* Pointer to file information to return */
+)
+{
+	FRESULT res;
+	DIR dj;
+	NAMEBUF(sfn, lfn);
+
+
+	res = auto_mount(&path, &dj.fs, 0);
+	if (res == FR_OK) {
+		INITBUF(dj, sfn, lfn);
+		res = follow_path(&dj, path);	/* Follow the file path */
+		if (res == FR_OK) {				/* Follwo completed */
+			if (dj.dir)	/* Found an object */
+				get_fileinfo(&dj, fno);
+			else		/* It is root dir */
+				res = FR_INVALID_NAME;
+		}
+	}
+
+	LEAVE_FF(dj.fs, res);
+}
+
+
+
+#if !_FS_READONLY
+/*-----------------------------------------------------------------------*/
+/* Truncate File                                                         */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_truncate (
+	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) 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 > 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_cluster(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->max_clust) {
+				res = put_cluster(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);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get Number of Free Clusters                                           */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_getfree (
+	const char *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;
+	BYTE fat, f, *p;
+
+
+	/* Get drive number */
+	res = auto_mount(&path, fatfs, 0);
+	if (res != FR_OK) LEAVE_FF(*fatfs, res);
+
+	/* If number of free cluster is valid, return it without cluster scan. */
+	if ((*fatfs)->free_clust <= (*fatfs)->max_clust - 2) {
+		*nclst = (*fatfs)->free_clust;
+		LEAVE_FF(*fatfs, FR_OK);
+	}
+
+	/* Get number of free clusters */
+	fat = (*fatfs)->fs_type;
+	n = 0;
+	if (fat == FS_FAT12) {
+		clst = 2;
+		do {
+			if ((WORD)get_cluster(*fatfs, clst) == 0) n++;
+		} while (++clst < (*fatfs)->max_clust);
+	} else {
+		clst = (*fatfs)->max_clust;
+		sect = (*fatfs)->fatbase;
+		f = 0; p = 0;
+		do {
+			if (!f) {
+				res = move_window(*fatfs, sect++);
+				if (res != FR_OK)
+					LEAVE_FF(*fatfs, res);
+				p = (*fatfs)->win;
+			}
+			if (fat == FS_FAT16) {
+				if (LD_WORD(p) == 0) n++;
+				p += 2; f += 1;
+			} else {
+				if (LD_DWORD(p) == 0) n++;
+				p += 4; f += 2;
+			}
+		} while (--clst);
+	}
+	(*fatfs)->free_clust = n;
+	if (fat == FS_FAT32) (*fatfs)->fsi_flag = 1;
+	*nclst = n;
+
+	LEAVE_FF(*fatfs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Delete a File or Directory                                            */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_unlink (
+	const char *path		/* Pointer to the file or directory path */
+)
+{
+	FRESULT res;
+	DIR dj, sdj;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir;
+	DWORD dclst;
+
+
+	res = auto_mount(&path, &dj.fs, 1);
+	if (res != FR_OK) LEAVE_FF(dj.fs, res);
+
+	INITBUF(dj, sfn, lfn);
+	res = follow_path(&dj, path);			/* Follow the file path */
+	if (res != FR_OK) LEAVE_FF(dj.fs, res); /* Follow failed */
+
+	dir = dj.dir;
+	if (!dir)								/* Is it the root directory? */
+		LEAVE_FF(dj.fs, FR_INVALID_NAME);
+	if (dir[DIR_Attr] & AM_RDO)				/* Is it a R/O object? */
+		LEAVE_FF(dj.fs, FR_DENIED);
+	dclst = ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) | LD_WORD(dir+DIR_FstClusLO);
+
+	if (dir[DIR_Attr] & AM_DIR) {			/* It is a sub-directory */
+		if (dclst < 2) LEAVE_FF(dj.fs, FR_INT_ERR);
+		mem_cpy(&sdj, &dj, sizeof(DIR));		/* Check if the sub-dir is empty or not */
+		sdj.sclust = dclst;
+		res = dir_seek(&sdj, 0);
+		if (res != FR_OK) LEAVE_FF(dj.fs, res);
+		res = dir_read(&sdj);
+		if (res == FR_OK) res = FR_DENIED;	/* Not empty sub-dir */
+		if (res != FR_NO_FILE) LEAVE_FF(dj.fs, res);
+	}
+
+	res = dir_remove(&dj);					/* Remove directory entry */
+	if (res == FR_OK) {
+		if (dclst)
+			res = remove_chain(dj.fs, dclst);	/* Remove the cluster chain */
+		if (res == FR_OK) res = sync(dj.fs);
+	}
+
+	LEAVE_FF(dj.fs, FR_OK);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Create a Directory                                                    */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_mkdir (
+	const char *path		/* Pointer to the directory path */
+)
+{
+	FRESULT res;
+	DIR dj;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir, n;
+	DWORD dsect, dclst, pclst, tim;
+
+
+	res = auto_mount(&path, &dj.fs, 1);
+	if (res != FR_OK) LEAVE_FF(dj.fs, res);
+
+	INITBUF(dj, sfn, lfn);
+	res = follow_path(&dj, path);			/* Follow the file path */
+	if (res == FR_OK) res = FR_EXIST;		/* Any file or directory is already existing */
+	if (res != FR_NO_FILE)					/* Any error occured */
+		LEAVE_FF(dj.fs, res);
+
+	dclst = create_chain(dj.fs, 0);			/* Allocate a new cluster for new directory table */
+	res = FR_OK;
+	if (dclst == 0) res = FR_DENIED;
+	if (dclst == 1) res = FR_INT_ERR;
+	if (dclst == 0xFFFFFFFF) res = FR_DISK_ERR;
+	if (res == FR_OK)
+		res = move_window(dj.fs, 0);
+	if (res != FR_OK) LEAVE_FF(dj.fs, res);
+	dsect = clust2sect(dj.fs, dclst);
+
+	dir = dj.fs->win;						/* Initialize the new directory table */
+	mem_set(dir, 0, SS(dj.fs));
+	mem_set(dir+DIR_Name, ' ', 8+3);		/* Create "." entry */
+	dir[DIR_Name] = '.';
+	dir[DIR_Attr] = AM_DIR;
+	tim = get_fattime();
+	ST_DWORD(dir+DIR_WrtTime, tim);
+	ST_WORD(dir+DIR_FstClusLO, dclst);
+	ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
+	mem_cpy(dir+32, dir, 32); 			/* Create ".." entry */
+	dir[33] = '.';
+	pclst = dj.sclust;
+	if (dj.fs->fs_type == FS_FAT32 && pclst == dj.fs->dirbase)
+		pclst = 0;
+	ST_WORD(dir+32+DIR_FstClusLO, pclst);
+	ST_WORD(dir+32+DIR_FstClusHI, pclst >> 16);
+	for (n = 0; n < dj.fs->csize; n++) {	/* Write dot entries and clear left sectors */
+		dj.fs->winsect = dsect++;
+		dj.fs->wflag = 1;
+		res = move_window(dj.fs, 0);
+		if (res) LEAVE_FF(dj.fs, res);
+		mem_set(dir, 0, SS(dj.fs));
+	}
+
+	res = dir_register(&dj);
+	if (res != FR_OK) {
+		remove_chain(dj.fs, dclst);
+	} else {
+		dir = dj.dir;
+		dir[DIR_Attr] = AM_DIR;					/* Attribute */
+		ST_DWORD(dir+DIR_WrtTime, tim);			/* Crated time */
+		ST_WORD(dir+DIR_FstClusLO, dclst);		/* Table start cluster */
+		ST_WORD(dir+DIR_FstClusHI, dclst >> 16);
+		dj.fs->wflag = 1;
+		res = sync(dj.fs);
+	}
+
+	LEAVE_FF(dj.fs, res);
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Change File Attribute                                                 */
+/*-----------------------------------------------------------------------*/
+
+FRESULT f_chmod (
+	const char *path,	/* Pointer to the file path */
+	BYTE value,			/* Attribute bits */
+	BYTE mask			/* Attribute mask to change */
+)
+{
+	FRESULT res;
+	DIR dj;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir;
+
+
+	res = auto_mount(&path, &dj.fs, 1);
+	if (res == FR_OK) {
+		INITBUF(dj, sfn, lfn);
+		res = follow_path(&dj, path);		/* Follow the file path */
+		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 char *path,	/* Pointer to the file/directory name */
+	const FILINFO *fno	/* Pointer to the timestamp to be set */
+)
+{
+	FRESULT res;
+	DIR dj;
+	NAMEBUF(sfn, lfn);
+	BYTE *dir;
+
+
+	res = auto_mount(&path, &dj.fs, 1);
+	if (res == FR_OK) {
+		INITBUF(dj, sfn, lfn);
+		res = follow_path(&dj, path);	/* Follow the file path */
+		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 char *path_old,	/* Pointer to the old name */
+	const char *path_new	/* Pointer to the new name */
+)
+{
+	FRESULT res;
+	DIR dj_old, dj_new;
+	NAMEBUF(sfn, lfn);
+	BYTE buf[21], *dir;
+	DWORD dw;
+
+
+	INITBUF(dj_old, sfn, lfn);
+	res = auto_mount(&path_old, &dj_old.fs, 1);
+	if (res == FR_OK) {
+		dj_new.fs = dj_old.fs;
+		res = follow_path(&dj_old, path_old);	/* Check old object */
+	}
+	if (res != FR_OK) LEAVE_FF(dj_old.fs, res);	/* The old object is not found */
+
+	if (!dj_old.dir) LEAVE_FF(dj_old.fs, FR_NO_FILE);	/* Is root dir? */
+	mem_cpy(buf, dj_old.dir+DIR_Attr, 21);		/* Save the object information */
+
+	mem_cpy(&dj_new, &dj_old, sizeof(DIR));
+	res = follow_path(&dj_new, path_new);		/* Check new object */
+	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? */
+		res = dir_register(&dj_new);			/* Register the new object */
+		if (res == FR_OK) {
+			dir = dj_new.dir;					/* Copy object information into new entry */
+			mem_cpy(dir+13, buf+2, 19);
+			dir[DIR_Attr] = buf[0];
+			dj_old.fs->wflag = 1;
+			if (dir[DIR_Attr] & AM_DIR) {		/* Update .. entry in the directory if needed */
+				dw = clust2sect(dj_new.fs, (DWORD)LD_WORD(dir+DIR_FstClusHI) | LD_WORD(dir+DIR_FstClusLO));
+				if (!dw) {
+					res = FR_INT_ERR;
+				} else {
+					res = move_window(dj_new.fs, dw);
+					dir = dj_new.fs->win+32;
+					if (res == FR_OK && dir[1] == '.') {
+						dw = (dj_new.fs->fs_type == FS_FAT32 && dj_new.sclust == dj_new.fs->dirbase) ? 0 : dj_new.sclust;
+						ST_WORD(dir+DIR_FstClusLO, dw);
+						ST_WORD(dir+DIR_FstClusHI, dw >> 16);
+						dj_new.fs->wflag = 1;
+					}
+				}
+			}
+			if (res == FR_OK) {
+				res = dir_remove(&dj_old);			/* Remove old entry */
+				if (res == FR_OK)
+					res = sync(dj_old.fs);
+			}
+		}
+	}
+
+	LEAVE_FF(dj_old.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 _FS_TINY cfg)  */
+/*-----------------------------------------------------------------------*/
+#if _USE_FORWARD && _FS_TINY
+
+FRESULT f_forward (
+	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;
+
+
+	*bf = 0;
+
+	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)(NULL, 0);				/* Repeat until all data transferred or stream becomes busy */
+		fp->fptr += rcnt, *bf += rcnt, btr -= rcnt) {
+		if ((fp->fptr % SS(fp->fs)) == 0) {			/* On the sector boundary? */
+			if (fp->csect >= fp->fs->csize) {		/* On the cluster boundary? */
+				clst = (fp->fptr == 0) ?			/* On the top of the file? */
+					fp->org_clust : get_cluster(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 */
+				fp->csect = 0;						/* Reset sector address in the cluster */
+			}
+			fp->csect++;							/* Next sector address in the cluster */
+		}
+		sect = clust2sect(fp->fs, fp->curr_clust);	/* Get current data sector */
+		if (!sect) ABORT(fp->fs, FR_INT_ERR);
+		sect += fp->csect - 1;
+		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 and <= 2048 */
+#define N_FATS		1			/* 1 or 2 */
+#define MAX_SECTOR	131072000UL	/* Maximum partition size */
+#define MIN_SECTOR	2000UL		/* Minimum partition size */
+
+
+FRESULT f_mkfs (
+	BYTE drv,			/* Logical drive number */
+	BYTE partition,		/* Partitioning rule 0:FDISK, 1:SFD */
+	WORD allocsize		/* Allocation unit size [bytes] */
+)
+{
+	static const DWORD sstbl[] = { 2048000, 1024000, 512000, 256000, 128000, 64000, 32000, 16000, 8000, 4000,   0 };
+	static const WORD cstbl[] =  {   32768,   16384,   8192,   4096,   2048, 16384,  8192,  4096, 2048, 1024, 512 };
+	BYTE fmt, m, *tbl;
+	DWORD b_part, b_fat, b_dir, b_data;		/* Area offset (LBA) */
+	DWORD n_part, n_rsv, n_fat, n_dir;		/* Area size */
+	DWORD n_clst, n;
+	WORD as;
+	FATFS *fs;
+	DSTATUS stat;
+
+
+	/* Check validity of the parameters */
+	if (drv >= _DRIVES) return FR_INVALID_DRIVE;
+	if (partition >= 2) return FR_MKFS_ABORTED;
+
+	/* Check mounted drive and clear work area */
+	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 (disk_ioctl(drv, GET_SECTOR_COUNT, &n_part) != RES_OK || n_part < MIN_SECTOR)
+		return FR_MKFS_ABORTED;
+	if (n_part > MAX_SECTOR) n_part = MAX_SECTOR;
+	b_part = (!partition) ? 63 : 0;		/* Boot sector */
+	n_part -= b_part;
+#if _MAX_SS == 512
+	if (!allocsize) {					/* Auto selection of cluster size */
+		for (n = 0; n_part < sstbl[n]; n++) ;
+		allocsize = cstbl[n];
+	}
+#endif
+	for (as = 512; as <= 32768U && as != allocsize; as <<= 1);
+	if (as != allocsize) return FR_MKFS_ABORTED;
+#if _MAX_SS != 512						/* Check disk sector size */
+	if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK
+		|| SS(fs) > _MAX_SS
+		|| SS(fs) > allocsize)
+		return FR_MKFS_ABORTED;
+#endif
+	allocsize /= SS(fs);		/* Number of sectors per cluster */
+
+	/* Pre-compute number of clusters and FAT type */
+	n_clst = n_part / allocsize;
+	fmt = FS_FAT12;
+	if (n_clst >= 0xFF5) fmt = FS_FAT16;
+	if (n_clst >= 0xFFF5) fmt = FS_FAT32;
+
+	/* Determine offset and size of FAT structure */
+	switch (fmt) {
+	case FS_FAT12:
+		n_fat = ((n_clst * 3 + 1) / 2 + 3 + SS(fs) - 1) / SS(fs);
+		n_rsv = 1 + partition;
+		n_dir = N_ROOTDIR * 32 / SS(fs);
+		break;
+	case FS_FAT16:
+		n_fat = ((n_clst * 2) + 4 + SS(fs) - 1) / SS(fs);
+		n_rsv = 1 + partition;
+		n_dir = N_ROOTDIR * 32 / SS(fs);
+		break;
+	default:
+		n_fat = ((n_clst * 4) + 8 + SS(fs) - 1) / SS(fs);
+		n_rsv = 33 - partition;
+		n_dir = 0;
+	}
+	b_fat = b_part + n_rsv;			/* FATs start sector */
+	b_dir = b_fat + n_fat * N_FATS;	/* Directory start sector */
+	b_data = b_dir + n_dir;			/* Data start sector */
+
+	/* Align data start sector to erase block boundary (for flash memory media) */
+	if (disk_ioctl(drv, GET_BLOCK_SIZE, &n) != RES_OK) return FR_MKFS_ABORTED;
+	n = (b_data + n - 1) & ~(n - 1);
+	n_fat += (n - b_data) / N_FATS;
+	/* b_dir and b_data are no longer used below */
+
+	/* Determine number of cluster and final check of validity of the FAT type */
+	n_clst = (n_part - n_rsv - n_fat * N_FATS - n_dir) / allocsize;
+	if (   (fmt == FS_FAT16 && n_clst < 0xFF5)
+		|| (fmt == FS_FAT32 && n_clst < 0xFFF5))
+		return FR_MKFS_ABORTED;
+
+	/* Create partition table if needed */
+	if (!partition) {
+		DWORD n_disk = b_part + n_part;
+
+		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_part < 0x10000) ? 0x04 : 0x06;
+		else
+			tbl[4] = 0x0c;
+		ST_DWORD(tbl+8, 63);			/* Partition start in LBA */
+		ST_DWORD(tbl+12, n_part);		/* Partition size in LBA */
+		ST_WORD(tbl+64, 0xAA55);		/* Signature */
+		if (disk_write(drv, fs->win, 0, 1) != RES_OK)
+			return FR_DISK_ERR;
+	}
+
+	/* Create boot record */
+	tbl = fs->win;								/* Clear buffer */
+	mem_set(tbl, 0, SS(fs));
+	ST_DWORD(tbl+BS_jmpBoot, 0x90FEEB);			/* Boot code (jmp $, nop) */
+	ST_WORD(tbl+BPB_BytsPerSec, SS(fs));		/* Sector size */
+	tbl[BPB_SecPerClus] = (BYTE)allocsize;		/* Sectors per cluster */
+	ST_WORD(tbl+BPB_RsvdSecCnt, n_rsv);			/* Reserved sectors */
+	tbl[BPB_NumFATs] = N_FATS;					/* Number of FATs */
+	ST_WORD(tbl+BPB_RootEntCnt, SS(fs) / 32 * n_dir); /* Number of rootdir entries */
+	if (n_part < 0x10000) {						/* Number of total sectors */
+		ST_WORD(tbl+BPB_TotSec16, n_part);
+	} else {
+		ST_DWORD(tbl+BPB_TotSec32, n_part);
+	}
+	tbl[BPB_Media] = 0xF8;						/* Media descripter */
+	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_part);			/* Hidden sectors */
+	n = get_fattime();							/* Use current time as a VSN */
+	if (fmt != FS_FAT32) {
+		ST_DWORD(tbl+BS_VolID, n);				/* Volume serial number */
+		ST_WORD(tbl+BPB_FATSz16, n_fat);		/* Number of secters 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 lavel, FAT signature */
+	} else {
+		ST_DWORD(tbl+BS_VolID32, n);			/* Volume serial number */
+		ST_DWORD(tbl+BPB_FATSz32, n_fat);		/* Number of secters per FAT */
+		ST_DWORD(tbl+BPB_RootClus, 2);			/* Root directory cluster (2) */
+		ST_WORD(tbl+BPB_FSInfo, 1);				/* FSInfo record offset (bs+1) */
+		ST_WORD(tbl+BPB_BkBootSec, 6);			/* Backup boot record offset (bs+6) */
+		tbl[BS_DrvNum32] = 0x80;				/* Drive number */
+		tbl[BS_BootSig32] = 0x29;				/* Extended boot signature */
+		mem_cpy(tbl+BS_VolLab32, "NO NAME    FAT32   ", 19);	/* Volume lavel, FAT signature */
+	}
+	ST_WORD(tbl+BS_55AA, 0xAA55);				/* Signature */
+	if (disk_write(drv, tbl, b_part+0, 1) != RES_OK)
+		return FR_DISK_ERR;
+	if (fmt == FS_FAT32)
+		disk_write(drv, tbl, b_part+6, 1);
+
+	/* Initialize FAT area */
+	for (m = 0; m < N_FATS; m++) {
+		mem_set(tbl, 0, SS(fs));		/* 1st sector of the FAT  */
+		if (fmt != FS_FAT32) {
+			n = (fmt == FS_FAT12) ? 0x00FFFFF8 : 0xFFFFFFF8;
+			ST_DWORD(tbl, n);				/* Reserve cluster #0-1 (FAT12/16) */
+		} else {
+			ST_DWORD(tbl+0, 0xFFFFFFF8);	/* Reserve cluster #0-1 (FAT32) */
+			ST_DWORD(tbl+4, 0xFFFFFFFF);
+			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));		/* Following FAT entries are filled by zero */
+		for (n = 1; n < n_fat; n++) {
+			if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+				return FR_DISK_ERR;
+		}
+	}
+
+	/* Initialize Root directory */
+	m = (BYTE)((fmt == FS_FAT32) ? allocsize : n_dir);
+	do {
+		if (disk_write(drv, tbl, b_fat++, 1) != RES_OK)
+			return FR_DISK_ERR;
+	} while (--m);
+
+	/* 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_part+1, 1);
+		disk_write(drv, tbl, b_part+7, 1);
+	}
+
+	return (disk_ioctl(drv, CTRL_SYNC, (void*)NULL) == RES_OK) ? FR_OK : FR_DISK_ERR;
+}
+
+#endif /* _USE_MKFS && !_FS_READONLY */
+
+
+
+
+#if _USE_STRFUNC
+/*-----------------------------------------------------------------------*/
+/* Get a string from the file                                            */
+/*-----------------------------------------------------------------------*/
+char* f_gets (
+	char* buff,	/* Pointer to the string buffer to read */
+	int len,	/* Size of string buffer */
+	FIL* fil	/* Pointer to the file object */
+)
+{
+	int i = 0;
+	char *p = buff;
+	UINT rc;
+
+
+	while (i < len - 1) {			/* Read bytes until buffer gets filled */
+		f_read(fil, p, 1, &rc);
+		if (rc != 1) break;			/* Break when no data to read */
+#if _USE_STRFUNC >= 2
+		if (*p == '\r') continue;	/* Strip '\r' */
+#endif
+		i++;
+		if (*p++ == '\n') break;	/* Break when reached end of line */
+	}
+	*p = 0;
+	return i ? buff : NULL;			/* 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 (
+	int chr,	/* A character to be output */
+	FIL* fil	/* Ponter to the file object */
+)
+{
+	UINT bw;
+	char c;
+
+
+#if _USE_STRFUNC >= 2
+	if (chr == '\n') f_putc ('\r', fil);	/* LF -> CRLF conversion */
+#endif
+	if (!fil) {	/* Special value may be used to switch the destination to any other device */
+	/*	put_console(chr);	*/
+		return chr;
+	}
+	c = (char)chr;
+	f_write(fil, &c, 1, &bw);	/* Write a byte to the file */
+	return bw ? chr : EOF;		/* Return the result */
+}
+
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Put a string to the file                                              */
+/*-----------------------------------------------------------------------*/
+int f_puts (
+	const char* str,	/* Pointer to the string to be output */
+	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 (
+	FIL* fil,			/* Pointer to the file object */
+	const char* str,	/* Pointer to the format string */
+	...					/* Optional arguments... */
+)
+{
+	va_list arp;
+	UCHAR c, f, r;
+	ULONG val;
+	char s[16];
+	int i, w, 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 cahracter */
+			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 (c >= '0' && c <= '9') {	/* Precision */
+			w = w * 10 + (c - '0');
+			c = *str++;
+		}
+		if (c == 'l') {				/* Prefix: Size is long int */
+			f |= 2; c = *str++;
+		}
+		if (c == 's') {				/* Type is string */
+			cc = f_puts(va_arg(arp, char*), fil);
+			continue;
+		}
+		if (c == 'c') {				/* Type is character */
+			cc = f_putc(va_arg(arp, int), fil);
+			if (cc != EOF) cc = 1;
+			continue;
+		}
+		r = 0;
+		if (c == 'd') r = 10;		/* Type is signed decimal */
+		if (c == 'u') r = 10;		/* Type is unsigned decimal */
+		if (c == 'X') r = 16;		/* Type is unsigned hexdecimal */
+		if (r == 0) break;			/* Unknown type */
+		if (f & 2) {				/* Get the value */
+			val = (ULONG)va_arg(arp, long);
+		} else {
+			val = (c == 'd') ? (ULONG)(long)va_arg(arp, int) : (ULONG)va_arg(arp, unsigned int);
+		}
+		/* Put numeral string */
+		if (c == 'd') {
+			if (val & 0x80000000) {
+				val = 0 - val;
+				f |= 4;
+			}
+		}
+		i = sizeof(s) - 1; s[i] = 0;
+		do {
+			c = (UCHAR)(val % r + '0');
+			if (c > '9') c += 7;
+			s[--i] = c;
+			val /= r;
+		} while (i && val);
+		if (i && (f & 4)) s[--i] = '-';
+		w = sizeof(s) - 1 - w;
+		while (i && i > w) s[--i] = (f & 1) ? '0' : ' ';
+		cc = f_puts(&s[i], fil);
+	}
+
+	va_end(arp);
+	return (cc == EOF) ? cc : res;
+}
+
+#endif /* !_FS_READONLY */
+#endif /* _USE_STRFUNC */

+ 547 - 0
avr/usbload/ff.h

@@ -0,0 +1,547 @@
+/*---------------------------------------------------------------------------/
+/  FatFs - FAT file system module include file  R0.07a       (C)ChaN, 2009
+/----------------------------------------------------------------------------/
+/ FatFs module is an open source software to implement FAT file system to
+/ small embedded systems. This is a free software and is opened for education,
+/ research and commercial developments under license policy of following trems.
+/
+/  Copyright (C) 2009, 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 use UNDER YOUR RESPONSIBILITY.
+/ * Redistributions of source code must retain the above copyright notice.
+/----------------------------------------------------------------------------*/
+
+#include "integer.h"
+
+/*---------------------------------------------------------------------------/
+/ FatFs Configuration Options
+/
+/ CAUTION! Do not forget to make clean the project after any changes to
+/ the configuration options.
+/
+/----------------------------------------------------------------------------*/
+#ifndef _FATFS
+#define _FATFS
+
+#define _WORD_ACCESS	1
+/* The _WORD_ACCESS option defines which access method is used to the word
+/  data in the FAT structure.
+/
+/   0: Byte-by-byte access. Always compatible with all platforms.
+/   1: Word access. Do not choose this unless following condition is met.
+/
+/  When the byte order on the memory is big-endian or address miss-aligned
+/  word access results incorrect behavior, the _WORD_ACCESS must be set to 0.
+/  If it is not the case, the value can also be set to 1 to improve the
+/  performance and code efficiency. */
+
+
+#define _FS_READONLY	0
+/* 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
+/* 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	_FS_TINY	1
+/* 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	_USE_STRFUNC	0
+/* To enable string functions, set _USE_STRFUNC to 1 or 2. */
+
+
+#define	_USE_MKFS	1
+/* To enable f_mkfs function, set _USE_MKFS to 1 and set _FS_READONLY to 0 */
+
+
+#define	_USE_FORWARD	0
+/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */
+
+
+#define _DRIVES		2
+/* Number of volumes (logical drives) to be used. */
+
+
+#define	_MAX_SS	512
+/* Maximum sector size to be handled. (512/1024/2048/4096) */
+/* 512 for memroy card and hard disk, 1024 for floppy disk, 2048 for MO disk */
+
+
+#define	_MULTI_PARTITION	0
+/* 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[]. */
+
+
+#define _CODE_PAGE	437
+/* The _CODE_PAGE specifies the OEM code page to be used on the target system.
+/  When it is non LFN configuration, there is no difference between SBCS code
+/  pages. When LFN is enabled, the code page must always be set correctly.
+/   437 - U.S.
+/   720 - Arabic
+/   737 - Greek
+/   775 - Baltic
+/   850 - Multilingual Latin 1
+/   852 - Latin 2
+/   855 - Cyrillic
+/   857 - Turkish
+/   858 - Multilingual Latin 1 + Euro
+/   862 - Hebrew
+/   866 - Russian
+/   874 - Thai
+/   932 - Japanese Shift-JIS       (DBCS)
+/   936 - Simplified Chinese GBK   (DBCS)
+/   949 - Korean                   (DBCS)
+/   950 - Traditional Chinese Big5 (DBCS)
+/   1258 - Vietnam
+*/
+
+
+#define	_USE_LFN	0
+#define	_MAX_LFN	255		/* Maximum LFN length to handle (max:255) */
+/* The _USE_LFN option switches the LFN support.
+/
+/   0: Disable LFN.
+/   1: Enable LFN with static working buffer on the bss. NOT REENTRANT.
+/   2: Enable LFN with dynamic working buffer on the caller's STACK.
+/
+/  The working buffer occupies (_MAX_LFN + 1) * 2 bytes. When enable LFN,
+/  a Unicode - OEM code conversion function ff_convert() must be added to
+/  the project. */
+
+
+#define _FS_REENTRANT	0
+#define _TIMEOUT		1000	/* Timeout period in unit of time ticks */
+#define	_SYNC_t			HANDLE	/* Type of sync object used on the OS. */
+								/* e.g. HANDLE, OS_EVENT*, ID and etc.. */
+/* To make the FatFs module re-entrant, set _FS_REENTRANT to 1 and add user
+/  provided synchronization handlers, ff_req_grant, ff_rel_grant,
+/  ff_del_syncobj and ff_cre_syncobj function to the project. */
+
+
+
+/* End of configuration options. Do not change followings without care.     */
+/*--------------------------------------------------------------------------*/
+
+
+
+/* Definitions corresponds to multiple sector size */
+
+#if _MAX_SS == 512
+#define	SS(fs)	512
+#else
+#if _MAX_SS == 1024 || _MAX_SS == 2048 || _MAX_SS == 4096
+#define	SS(fs)	((fs)->s_size)
+#else
+#error Sector size must be 512, 1024, 2048 or 4096.
+#endif
+#endif
+
+
+
+/* File system object structure */
+
+typedef struct _FATFS {
+	BYTE	fs_type;	/* FAT sub type */
+	BYTE	drive;		/* Physical drive number */
+	BYTE	csize;		/* Number of sectors per cluster */
+	BYTE	n_fats;		/* Number of FAT copies */
+	BYTE	wflag;		/* win[] dirty flag (1:must be written back) */
+	BYTE	pad1;
+	WORD	id;			/* File system mount ID */
+	WORD	n_rootdir;	/* Number of root directory entries (0 on FAT32) */
+#if _FS_REENTRANT
+	_SYNC_t	sobj;		/* Identifier of sync object */
+#endif
+#if _MAX_SS != 512U
+	WORD	s_size;		/* Sector size */
+#endif
+#if !_FS_READONLY
+	BYTE	fsi_flag;	/* fsinfo dirty flag (1:must be written back) */
+	BYTE	pad2;
+	DWORD	last_clust;	/* Last allocated cluster */
+	DWORD	free_clust;	/* Number of free clusters */
+	DWORD	fsi_sector;	/* fsinfo sector */
+#endif
+	DWORD	sects_fat;	/* Sectors per fat */
+	DWORD	max_clust;	/* Maximum cluster# + 1. Number of clusters is max_clust - 2 */
+	DWORD	fatbase;	/* FAT start sector */
+	DWORD	dirbase;	/* Root directory start sector (Cluster# on FAT32) */
+	DWORD	database;	/* Data start sector */
+	DWORD	winsect;	/* Current sector appearing in the win[] */
+	BYTE	win[_MAX_SS];/* Disk access window for Directory/FAT */
+} FATFS;
+
+
+
+/* Directory object structure */
+
+typedef struct _DIR {
+	WORD	id;			/* Owner file system mount ID */
+	WORD	index;		/* Current index number */
+	FATFS*	fs;			/* Pointer to the owner file system object */
+	DWORD	sclust;		/* Table start cluster (0:Static table) */
+	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 (0xFFFF:No LFN) */
+#endif
+} DIR;
+
+
+
+/* File object structure */
+
+typedef struct _FIL {
+	FATFS*	fs;			/* Pointer to the owner file system object */
+	WORD	id;			/* Owner file system mount ID */
+	BYTE	flag;		/* File status flags */
+	BYTE	csect;		/* Sector address in the cluster */
+	DWORD	fptr;		/* File R/W pointer */
+	DWORD	fsize;		/* File size */
+	DWORD	org_clust;	/* File start cluster */
+	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 !_FS_TINY
+	BYTE	buf[_MAX_SS];/* File R/W buffer */
+#endif
+} FIL;
+
+
+
+/* File status structure */
+
+typedef struct _FILINFO {
+	DWORD fsize;		/* File size */
+	WORD fdate;			/* Last modified date */
+	WORD ftime;			/* Last modified time */
+	BYTE fattrib;		/* Attribute */
+	char fname[13];		/* Short file name (8.3 format) */
+#if _USE_LFN
+	char *lfname;		/* Pointer to the LFN buffer */
+	int lfsize;			/* Size of LFN buffer [bytes] */
+#endif
+} FILINFO;
+
+
+
+/* DBCS code ranges */
+
+#if _CODE_PAGE == 932	/* CP932 (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	/* CP936 (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	/* CP949 (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	/* CP950 (Traditional Chinese Big5) */
+#define _DF1S	0x81
+#define _DF1E	0xFE
+#define _DS1S	0x40
+#define _DS1E	0x7E
+#define _DS2S	0xA1
+#define _DS2E	0xFE
+
+#else					/* SBCS code pages */
+#define _DF1S	0
+
+#endif
+
+
+
+/* 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	/* DBCS configuration */
+
+#if _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
+
+#if _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		/* SBCS configuration */
+
+#define IsDBCS1(c)	0
+#define IsDBCS2(c)	0
+
+#endif /* _DF1S */
+
+
+
+/* Definitions corresponds to multi partition */
+
+#if _MULTI_PARTITION		/* Multiple partition configuration */
+
+typedef struct _PARTITION {
+	BYTE pd;	/* Physical drive# */
+	BYTE pt;	/* Partition # (0-3) */
+} PARTITION;
+
+extern
+const PARTITION Drives[];			/* Logical drive# to physical location conversion table */
+#define LD2PD(drv) (Drives[drv].pd)	/* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt)	/* Get partition# */
+
+#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
+
+
+
+/* File function return code (FRESULT) */
+
+typedef enum {
+	FR_OK = 0,			/* 0 */
+	FR_DISK_ERR,		/* 1 */
+	FR_INT_ERR,			/* 2 */
+	FR_NOT_READY,		/* 3 */
+	FR_NO_FILE,			/* 4 */
+	FR_NO_PATH,			/* 5 */
+	FR_INVALID_NAME,	/* 6 */
+	FR_DENIED,			/* 7 */
+	FR_EXIST,			/* 8 */
+	FR_INVALID_OBJECT,	/* 9 */
+	FR_WRITE_PROTECTED,	/* 10 */
+	FR_INVALID_DRIVE,	/* 11 */
+	FR_NOT_ENABLED,		/* 12 */
+	FR_NO_FILESYSTEM,	/* 13 */
+	FR_MKFS_ABORTED,	/* 14 */
+	FR_TIMEOUT			/* 15 */
+} FRESULT;
+
+
+
+/*--------------------------------------------------------------*/
+/* FatFs module application interface                           */
+
+FRESULT f_mount (BYTE, FATFS*);						/* Mount/Unmount a logical drive */
+FRESULT f_open (FIL*, const char*, BYTE);			/* Open or create a file */
+FRESULT f_read (FIL*, void*, UINT, UINT*);			/* Read data from a file */
+FRESULT f_write (FIL*, const void*, UINT, UINT*);	/* Write data to a file */
+FRESULT f_lseek (FIL*, DWORD);						/* Move file pointer of a file object */
+FRESULT f_close (FIL*);								/* Close an open file object */
+FRESULT f_opendir (DIR*, const char*);				/* Open an existing directory */
+FRESULT f_readdir (DIR*, FILINFO*);					/* Read a directory item */
+FRESULT f_stat (const char*, FILINFO*);				/* Get file status */
+FRESULT f_getfree (const char*, DWORD*, FATFS**);	/* Get number of free clusters on the drive */
+FRESULT f_truncate (FIL*);							/* Truncate file */
+FRESULT f_sync (FIL*);								/* Flush cached data of a writing file */
+FRESULT f_unlink (const char*);						/* Delete an existing file or directory */
+FRESULT	f_mkdir (const char*);						/* Create a new directory */
+FRESULT f_chmod (const char*, BYTE, BYTE);			/* Change attriburte of the file/dir */
+FRESULT f_utime (const char*, const FILINFO*);		/* Change timestamp of the file/dir */
+FRESULT f_rename (const char*, const char*);		/* Rename/Move a file or directory */
+FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*);	/* Forward data to the stream */
+FRESULT f_mkfs (BYTE, BYTE, WORD);					/* Create a file system on the drive */
+
+#if _USE_STRFUNC
+int f_putc (int, FIL*);								/* Put a character to the file */
+int f_puts (const char*, FIL*);						/* Put a string to the file */
+int f_printf (FIL*, const char*, ...);				/* Put a formatted string to the file */
+char* f_gets (char*, int, 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
+
+
+
+/*--------------------------------------------------------------*/
+/* User defined functions                                       */
+
+/* Real time clock */
+#if !_FS_READONLY
+DWORD get_fattime (void);	/* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
+							/* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
+#endif
+
+/* Unicode - OEM code conversion */
+#if _USE_LFN
+WCHAR ff_convert (WCHAR, UINT);
+#endif
+
+/* Sync functions */
+#if _FS_REENTRANT
+BOOL ff_cre_syncobj(BYTE, _SYNC_t*);
+BOOL ff_del_syncobj(_SYNC_t);
+BOOL ff_req_grant(_SYNC_t);
+void ff_rel_grant(_SYNC_t);
+#endif
+
+
+
+/*--------------------------------------------------------------*/
+/* Flags and offset address                                     */
+
+
+/* File access control and file status flags (FIL.flag) */
+
+#define	FA_READ				0x01
+#define	FA_OPEN_EXISTING	0x00
+#if _FS_READONLY == 0
+#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
+#define FA__ERROR			0x80
+
+
+/* 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 */
+
+
+/* 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
+
+
+#endif /* _FATFS */

+ 37 - 0
avr/usbload/integer.h

@@ -0,0 +1,37 @@
+/*-------------------------------------------*/
+/* Integer type definitions for FatFs module */
+/*-------------------------------------------*/
+
+#ifndef _INTEGER
+
+#if 0
+#include <windows.h>
+#else
+
+/* 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;
+typedef unsigned short	WCHAR;
+
+/* 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
+
+#define _INTEGER
+#endif

+ 600 - 0
avr/usbload/mmc.c

@@ -0,0 +1,600 @@
+/*-----------------------------------------------------------------------*/
+/* MMC/SDSC/SDHC (in SPI mode) control module  (C)ChaN, 2007             */
+/*-----------------------------------------------------------------------*/
+/* Only rcvr_spi(), xmit_spi(), disk_timerproc() and some macros         */
+/* are platform dependent.                                               */
+/*-----------------------------------------------------------------------*/
+
+
+#include <avr/io.h>
+#include "diskio.h"
+
+
+/* Definitions for MMC/SDC command */
+#define CMD0	(0x40+0)	/* GO_IDLE_STATE */
+#define CMD1	(0x40+1)	/* SEND_OP_COND (MMC) */
+#define	ACMD41	(0xC0+41)	/* SEND_OP_COND (SDC) */
+#define CMD8	(0x40+8)	/* SEND_IF_COND */
+#define CMD9	(0x40+9)	/* SEND_CSD */
+#define CMD10	(0x40+10)	/* SEND_CID */
+#define CMD12	(0x40+12)	/* STOP_TRANSMISSION */
+#define ACMD13	(0xC0+13)	/* SD_STATUS (SDC) */
+#define CMD16	(0x40+16)	/* SET_BLOCKLEN */
+#define CMD17	(0x40+17)	/* READ_SINGLE_BLOCK */
+#define CMD18	(0x40+18)	/* READ_MULTIPLE_BLOCK */
+#define CMD23	(0x40+23)	/* SET_BLOCK_COUNT (MMC) */
+#define	ACMD23	(0xC0+23)	/* SET_WR_BLK_ERASE_COUNT (SDC) */
+#define CMD24	(0x40+24)	/* WRITE_BLOCK */
+#define CMD25	(0x40+25)	/* WRITE_MULTIPLE_BLOCK */
+#define CMD55	(0x40+55)	/* APP_CMD */
+#define CMD58	(0x40+58)	/* READ_OCR */
+
+
+/* Port Controls  (Platform dependent) */
+#define SELECT()	PORTB &= ~1		/* MMC CS = L */
+#define	DESELECT()	PORTB |= 1		/* MMC CS = H */
+
+#define SOCKPORT	PINB			/* Socket contact port */
+#define SOCKWP		0x20			/* Write protect switch (PB5) */
+#define SOCKINS		0x10			/* Card detect switch (PB4) */
+
+#define	FCLK_SLOW()					/* Set slow clock (100k-400k) */
+#define	FCLK_FAST()					/* Set fast clock (depends on the CSD) */
+
+
+/*--------------------------------------------------------------------------
+
+   Module Private Functions
+
+---------------------------------------------------------------------------*/
+
+static volatile
+DSTATUS Stat = STA_NOINIT;	/* Disk status */
+
+static volatile
+BYTE Timer1, Timer2;	/* 100Hz decrement timer */
+
+static
+BYTE CardType;			/* Card type flags */
+
+
+/*-----------------------------------------------------------------------*/
+/* Transmit a byte to MMC via SPI  (Platform dependent)                  */
+/*-----------------------------------------------------------------------*/
+
+#define xmit_spi(dat) 	SPDR=(dat); loop_until_bit_is_set(SPSR,SPIF)
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Receive a byte from MMC via SPI  (Platform dependent)                 */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE rcvr_spi (void)
+{
+	SPDR = 0xFF;
+	loop_until_bit_is_set(SPSR, SPIF);
+	return SPDR;
+}
+
+/* Alternative macro to receive data fast */
+#define rcvr_spi_m(dst)	SPDR=0xFF; loop_until_bit_is_set(SPSR,SPIF); *(dst)=SPDR
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Wait for card ready                                                   */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE wait_ready (void)
+{
+	BYTE res;
+
+
+	Timer2 = 50;	/* Wait for ready in timeout of 500ms */
+	rcvr_spi();
+	do
+		res = rcvr_spi();
+	while ((res != 0xFF) && Timer2);
+
+	return res;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Deselect the card and release SPI bus                                 */
+/*-----------------------------------------------------------------------*/
+
+static
+void release_spi (void)
+{
+	DESELECT();
+	rcvr_spi();
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Power Control  (Platform dependent)                                   */
+/*-----------------------------------------------------------------------*/
+/* When the target system does not support socket power control, there   */
+/* is nothing to do in these functions and chk_power always returns 1.   */
+
+static
+void power_on (void)
+{
+	PORTE &= ~0x80;				/* Socket power ON */
+	for (Timer1 = 3; Timer1; );	/* Wait for 30ms */
+	PORTB = 0b10110101;			/* Enable drivers */
+	DDRB  = 0b11000111;
+	SPCR = 0b01010000;			/* Initialize SPI port (Mode 0) */
+	SPSR = 0b00000001;
+}
+
+static
+void power_off (void)
+{
+	SELECT();				/* Wait for card ready */
+	wait_ready();
+	release_spi();
+
+	SPCR = 0;				/* Disable SPI function */
+	DDRB  = 0b11000000;		/* Disable drivers */
+	PORTB = 0b10110000;
+	PORTE |=  0x80;			/* Socket power OFF */
+	Stat |= STA_NOINIT;		/* Set STA_NOINIT */
+}
+
+static
+int chk_power(void)		/* Socket power state: 0=off, 1=on */
+{
+	return (PORTE & 0x80) ? 0 : 1;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Receive a data packet from MMC                                        */
+/*-----------------------------------------------------------------------*/
+
+static
+BOOL rcvr_datablock (
+	BYTE *buff,			/* Data buffer to store received data */
+	UINT btr			/* Byte count (must be multiple of 4) */
+)
+{
+	BYTE token;
+
+
+	Timer1 = 10;
+	do {							/* Wait for data packet in timeout of 100ms */
+		token = rcvr_spi();
+	} while ((token == 0xFF) && Timer1);
+	if(token != 0xFE) return FALSE;	/* If not valid data token, retutn with error */
+
+	do {							/* Receive the data block into buffer */
+		rcvr_spi_m(buff++);
+		rcvr_spi_m(buff++);
+		rcvr_spi_m(buff++);
+		rcvr_spi_m(buff++);
+	} while (btr -= 4);
+	rcvr_spi();						/* Discard CRC */
+	rcvr_spi();
+
+	return TRUE;					/* Return with success */
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Send a data packet to MMC                                             */
+/*-----------------------------------------------------------------------*/
+
+#if _READONLY == 0
+static
+BOOL xmit_datablock (
+	const BYTE *buff,	/* 512 byte data block to be transmitted */
+	BYTE token			/* Data/Stop token */
+)
+{
+	BYTE resp, wc;
+
+
+	if (wait_ready() != 0xFF) return FALSE;
+
+	xmit_spi(token);					/* Xmit data token */
+	if (token != 0xFD) {	/* Is data token */
+		wc = 0;
+		do {							/* Xmit the 512 byte data block to MMC */
+			xmit_spi(*buff++);
+			xmit_spi(*buff++);
+		} while (--wc);
+		xmit_spi(0xFF);					/* CRC (Dummy) */
+		xmit_spi(0xFF);
+		resp = rcvr_spi();				/* Reveive data response */
+		if ((resp & 0x1F) != 0x05)		/* If not accepted, return with error */
+			return FALSE;
+	}
+
+	return TRUE;
+}
+#endif /* _READONLY */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Send a command packet to MMC                                          */
+/*-----------------------------------------------------------------------*/
+
+static
+BYTE send_cmd (
+	BYTE cmd,		/* Command byte */
+	DWORD arg		/* Argument */
+)
+{
+	BYTE n, res;
+
+
+	if (cmd & 0x80) {	/* ACMD<n> is the command sequense of CMD55-CMD<n> */
+		cmd &= 0x7F;
+		res = send_cmd(CMD55, 0);
+		if (res > 1) return res;
+	}
+
+	/* Select the card and wait for ready */
+	DESELECT();
+	SELECT();
+	if (wait_ready() != 0xFF) return 0xFF;
+
+	/* Send command packet */
+	xmit_spi(cmd);						/* Start + Command index */
+	xmit_spi((BYTE)(arg >> 24));		/* Argument[31..24] */
+	xmit_spi((BYTE)(arg >> 16));		/* Argument[23..16] */
+	xmit_spi((BYTE)(arg >> 8));			/* Argument[15..8] */
+	xmit_spi((BYTE)arg);				/* Argument[7..0] */
+	n = 0x01;							/* Dummy CRC + Stop */
+	if (cmd == CMD0) n = 0x95;			/* Valid CRC for CMD0(0) */
+	if (cmd == CMD8) n = 0x87;			/* Valid CRC for CMD8(0x1AA) */
+	xmit_spi(n);
+
+	/* Receive command response */
+	if (cmd == CMD12) rcvr_spi();		/* Skip a stuff byte when stop reading */
+	n = 10;								/* Wait for a valid response in timeout of 10 attempts */
+	do
+		res = rcvr_spi();
+	while ((res & 0x80) && --n);
+
+	return res;			/* Return with the response value */
+}
+
+
+
+/*--------------------------------------------------------------------------
+
+   Public Functions
+
+---------------------------------------------------------------------------*/
+
+
+/*-----------------------------------------------------------------------*/
+/* Initialize Disk Drive                                                 */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_initialize (
+	BYTE drv		/* Physical drive nmuber (0) */
+)
+{
+	BYTE n, cmd, ty, ocr[4];
+
+
+	if (drv) return STA_NOINIT;			/* Supports only single drive */
+	if (Stat & STA_NODISK) return Stat;	/* No card in the socket */
+
+	power_on();							/* Force socket power on */
+	FCLK_SLOW();
+	for (n = 10; n; n--) rcvr_spi();	/* 80 dummy clocks */
+
+	ty = 0;
+	if (send_cmd(CMD0, 0) == 1) {			/* Enter Idle state */
+		Timer1 = 100;						/* Initialization timeout of 1000 msec */
+		if (send_cmd(CMD8, 0x1AA) == 1) {	/* SDHC */
+			for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();		/* Get trailing return value of R7 resp */
+			if (ocr[2] == 0x01 && ocr[3] == 0xAA) {				/* The card can work at vdd range of 2.7-3.6V */
+				while (Timer1 && send_cmd(ACMD41, 1UL << 30));	/* Wait for leaving idle state (ACMD41 with HCS bit) */
+				if (Timer1 && send_cmd(CMD58, 0) == 0) {		/* Check CCS bit in the OCR */
+					for (n = 0; n < 4; n++) ocr[n] = rcvr_spi();
+					ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2;
+				}
+			}
+		} else {							/* SDSC or MMC */
+			if (send_cmd(ACMD41, 0) <= 1) 	{
+				ty = CT_SD1; cmd = ACMD41;	/* SDSC */
+			} else {
+				ty = CT_MMC; cmd = CMD1;	/* MMC */
+			}
+			while (Timer1 && send_cmd(cmd, 0));			/* Wait for leaving idle state */
+			if (!Timer1 || send_cmd(CMD16, 512) != 0)	/* Set R/W block length to 512 */
+				ty = 0;
+		}
+	}
+	CardType = ty;
+	release_spi();
+
+	if (ty) {			/* Initialization succeded */
+		Stat &= ~STA_NOINIT;		/* Clear STA_NOINIT */
+		FCLK_FAST();
+	} else {			/* Initialization failed */
+		power_off();
+	}
+
+	return Stat;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Get Disk Status                                                       */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_status (
+	BYTE drv		/* Physical drive nmuber (0) */
+)
+{
+	if (drv) return STA_NOINIT;		/* Supports only single drive */
+	return Stat;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Sector(s)                                                        */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_read (
+	BYTE drv,			/* Physical drive nmuber (0) */
+	BYTE *buff,			/* Pointer to the data buffer to store read data */
+	DWORD sector,		/* Start sector number (LBA) */
+	BYTE count			/* Sector count (1..255) */
+)
+{
+	if (drv || !count) return RES_PARERR;
+	if (Stat & STA_NOINIT) return RES_NOTRDY;
+
+	if (!(CardType & CT_BLOCK)) sector *= 512;	/* Convert to byte address if needed */
+
+	if (count == 1) {	/* Single block read */
+		if ((send_cmd(CMD17, sector) == 0)	/* READ_SINGLE_BLOCK */
+			&& rcvr_datablock(buff, 512))
+			count = 0;
+	}
+	else {				/* Multiple block read */
+		if (send_cmd(CMD18, sector) == 0) {	/* READ_MULTIPLE_BLOCK */
+			do {
+				if (!rcvr_datablock(buff, 512)) break;
+				buff += 512;
+			} while (--count);
+			send_cmd(CMD12, 0);				/* STOP_TRANSMISSION */
+		}
+	}
+	release_spi();
+
+	return count ? RES_ERROR : RES_OK;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Write Sector(s)                                                       */
+/*-----------------------------------------------------------------------*/
+
+#if _READONLY == 0
+DRESULT disk_write (
+	BYTE drv,			/* Physical drive nmuber (0) */
+	const BYTE *buff,	/* Pointer to the data to be written */
+	DWORD sector,		/* Start sector number (LBA) */
+	BYTE count			/* Sector count (1..255) */
+)
+{
+	if (drv || !count) return RES_PARERR;
+	if (Stat & STA_NOINIT) return RES_NOTRDY;
+	if (Stat & STA_PROTECT) return RES_WRPRT;
+
+	if (!(CardType & CT_BLOCK)) sector *= 512;	/* Convert to byte address if needed */
+
+	if (count == 1) {	/* Single block write */
+		if ((send_cmd(CMD24, sector) == 0)	/* WRITE_BLOCK */
+			&& xmit_datablock(buff, 0xFE))
+			count = 0;
+	}
+	else {				/* Multiple block write */
+		if (CardType & CT_SDC) send_cmd(ACMD23, count);
+		if (send_cmd(CMD25, sector) == 0) {	/* WRITE_MULTIPLE_BLOCK */
+			do {
+				if (!xmit_datablock(buff, 0xFC)) break;
+				buff += 512;
+			} while (--count);
+			if (!xmit_datablock(0, 0xFD))	/* STOP_TRAN token */
+				count = 1;
+		}
+	}
+	release_spi();
+
+	return count ? RES_ERROR : RES_OK;
+}
+#endif /* _READONLY == 0 */
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions                                               */
+/*-----------------------------------------------------------------------*/
+
+#if _USE_IOCTL != 0
+DRESULT disk_ioctl (
+	BYTE drv,		/* Physical drive nmuber (0) */
+	BYTE ctrl,		/* Control code */
+	void *buff		/* Buffer to send/receive control data */
+)
+{
+	DRESULT res;
+	BYTE n, csd[16], *ptr = buff;
+	WORD csize;
+
+
+	if (drv) return RES_PARERR;
+
+	res = RES_ERROR;
+
+	if (ctrl == CTRL_POWER) {
+		switch (*ptr) {
+		case 0:		/* Sub control code == 0 (POWER_OFF) */
+			if (chk_power())
+				power_off();		/* Power off */
+			res = RES_OK;
+			break;
+		case 1:		/* Sub control code == 1 (POWER_ON) */
+			power_on();				/* Power on */
+			res = RES_OK;
+			break;
+		case 2:		/* Sub control code == 2 (POWER_GET) */
+			*(ptr+1) = (BYTE)chk_power();
+			res = RES_OK;
+			break;
+		default :
+			res = RES_PARERR;
+		}
+	}
+	else {
+		if (Stat & STA_NOINIT) return RES_NOTRDY;
+
+		switch (ctrl) {
+		case CTRL_SYNC :		/* Make sure that no pending write process */
+			SELECT();
+			if (wait_ready() == 0xFF)
+				res = RES_OK;
+			break;
+
+		case GET_SECTOR_COUNT :	/* Get number of sectors on the disk (DWORD) */
+			if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {
+				if ((csd[0] >> 6) == 1) {	/* SDC ver 2.00 */
+					csize = csd[9] + ((WORD)csd[8] << 8) + 1;
+					*(DWORD*)buff = (DWORD)csize << 10;
+				} else {					/* SDC ver 1.XX or MMC*/
+					n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;
+					csize = (csd[8] >> 6) + ((WORD)csd[7] << 2) + ((WORD)(csd[6] & 3) << 10) + 1;
+					*(DWORD*)buff = (DWORD)csize << (n - 9);
+				}
+				res = RES_OK;
+			}
+			break;
+
+		case GET_SECTOR_SIZE :	/* Get R/W sector size (WORD) */
+			*(WORD*)buff = 512;
+			res = RES_OK;
+			break;
+
+		case GET_BLOCK_SIZE :	/* Get erase block size in unit of sector (DWORD) */
+			if (CardType & CT_SD2) {	/* SDC ver 2.00 */
+				if (send_cmd(ACMD13, 0) == 0) {	/* Read SD status */
+					rcvr_spi();
+					if (rcvr_datablock(csd, 16)) {				/* Read partial block */
+						for (n = 64 - 16; n; n--) rcvr_spi();	/* Purge trailing data */
+						*(DWORD*)buff = 16UL << (csd[10] >> 4);
+						res = RES_OK;
+					}
+				}
+			} else {					/* SDC ver 1.XX or MMC */
+				if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {	/* Read CSD */
+					if (CardType & CT_SD1) {	/* SDC ver 1.XX */
+						*(DWORD*)buff = (((csd[10] & 63) << 1) + ((WORD)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
+					} else {					/* MMC */
+						*(DWORD*)buff = ((WORD)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);
+					}
+					res = RES_OK;
+				}
+			}
+			break;
+
+		case MMC_GET_TYPE :		/* Get card type flags (1 byte) */
+			*ptr = CardType;
+			res = RES_OK;
+			break;
+
+		case MMC_GET_CSD :		/* Receive CSD as a data block (16 bytes) */
+			if (send_cmd(CMD9, 0) == 0		/* READ_CSD */
+				&& rcvr_datablock(ptr, 16))
+				res = RES_OK;
+			break;
+
+		case MMC_GET_CID :		/* Receive CID as a data block (16 bytes) */
+			if (send_cmd(CMD10, 0) == 0		/* READ_CID */
+				&& rcvr_datablock(ptr, 16))
+				res = RES_OK;
+			break;
+
+		case MMC_GET_OCR :		/* Receive OCR as an R3 resp (4 bytes) */
+			if (send_cmd(CMD58, 0) == 0) {	/* READ_OCR */
+				for (n = 4; n; n--) *ptr++ = rcvr_spi();
+				res = RES_OK;
+			}
+			break;
+
+		case MMC_GET_SDSTAT :	/* Receive SD statsu as a data block (64 bytes) */
+			if (send_cmd(ACMD13, 0) == 0) {	/* SD_STATUS */
+				rcvr_spi();
+				if (rcvr_datablock(ptr, 64))
+					res = RES_OK;
+			}
+			break;
+
+		default:
+			res = RES_PARERR;
+		}
+
+		release_spi();
+	}
+
+	return res;
+}
+#endif /* _USE_IOCTL != 0 */
+
+
+/*-----------------------------------------------------------------------*/
+/* Device Timer Interrupt Procedure  (Platform dependent)                */
+/*-----------------------------------------------------------------------*/
+/* This function must be called in period of 10ms                        */
+
+void disk_timerproc (void)
+{
+	static BYTE pv;
+	BYTE n, s;
+
+
+	n = Timer1;						/* 100Hz decrement timer */
+	if (n) Timer1 = --n;
+	n = Timer2;
+	if (n) Timer2 = --n;
+
+	n = pv;
+	pv = SOCKPORT & (SOCKWP | SOCKINS);	/* Sample socket switch */
+
+	if (n == pv) {					/* Have contacts stabled? */
+		s = Stat;
+
+		if (pv & SOCKWP)			/* WP is H (write protected) */
+			s |= STA_PROTECT;
+		else						/* WP is L (write enabled) */
+			s &= ~STA_PROTECT;
+
+		if (pv & SOCKINS)			/* INS = H (Socket empty) */
+			s |= (STA_NODISK | STA_NOINIT);
+		else						/* INS = L (Card inserted) */
+			s &= ~STA_NODISK;
+
+		Stat = s;
+	}
+}
+

+ 3 - 3
avr/usbload/rle.c

@@ -22,9 +22,9 @@
 #include <avr/io.h>
 #include <stdlib.h>
 #include <stdio.h>
-#include <avr/pgmspace.h>       /* required by usbdrv.h */
-#include <util/delay.h>         /* for _delay_ms() */
-#include <avr/interrupt.h>      /* for sei() */
+#include <avr/pgmspace.h>       
+#include <util/delay.h>         
+#include <avr/interrupt.h>      
 
 #include "sram.h"
 #include "debug.h"

+ 44 - 0
avr/usbload/rtc.c

@@ -0,0 +1,44 @@
+/*--------------------------------------------------------------------------*/
+/*  RTC controls                                                            */
+
+#include <avr/io.h>
+#include "rtc.h"
+
+
+
+
+BOOL rtc_gettime (RTC *rtc)
+{
+	BYTE buf[8];
+
+
+	rtc->sec = (buf[0] & 0x0F) + ((buf[0] >> 4) & 7) * 10;
+	rtc->min = (buf[1] & 0x0F) + (buf[1] >> 4) * 10;
+	rtc->hour = (buf[2] & 0x0F) + ((buf[2] >> 4) & 3) * 10;
+	rtc->wday = (buf[2] & 0x07);
+	rtc->mday = (buf[4] & 0x0F) + ((buf[4] >> 4) & 3) * 10;
+	rtc->month = (buf[5] & 0x0F) + ((buf[5] >> 4) & 1) * 10;
+	rtc->year = 2000 + (buf[6] & 0x0F) + (buf[6] >> 4) * 10;
+    return TRUE;
+}
+
+
+
+
+BOOL rtc_settime (const RTC *rtc)
+{
+
+	BYTE buf[8];
+
+
+	buf[0] = rtc->sec / 10 * 16 + rtc->sec % 10;
+	buf[1] = rtc->min / 10 * 16 + rtc->min % 10;
+	buf[2] = rtc->hour / 10 * 16 + rtc->hour % 10;
+	buf[3] = rtc->wday & 7;
+	buf[4] = rtc->mday / 10 * 16 + rtc->mday % 10;
+	buf[5] = rtc->month / 10 * 16 + rtc->month % 10;
+	buf[6] = (rtc->year - 2000) / 10 * 16 + (rtc->year - 2000) % 10;
+	return 1;
+}
+
+

+ 15 - 0
avr/usbload/rtc.h

@@ -0,0 +1,15 @@
+#include "integer.h"
+
+typedef struct {
+	WORD	year;	/* 2000..2099 */
+	BYTE	month;	/* 1..12 */
+	BYTE	mday;	/* 1.. 31 */
+	BYTE	wday;	/* 1..7 */
+	BYTE	hour;	/* 0..23 */
+	BYTE	min;	/* 0..59 */
+	BYTE	sec;	/* 0..59 */
+} RTC;
+
+BOOL rtc_gettime (RTC*);					/* Get time */
+BOOL rtc_settime (const RTC*);				/* Set time */
+

+ 0 - 2
avr/usbload/shared_memory.c

@@ -118,8 +118,6 @@ void shared_memory_yield()
 int shared_memory_read(uint8_t *cmd, uint8_t *len,uint8_t *buffer)
 {
     uint8_t state;
-
-
     state = sram_read(SHARED_MEM_RX_LOC_STATE);
     if (state != SHARED_MEM_RX_AVR_ACK){
         return 1;

+ 162 - 4
avr/usbload/testing.c

@@ -22,15 +22,31 @@
 
 
 #include <stdlib.h>
-#include <stdint.h>
-#include <util/delay.h>
+#include <string.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>      
+#include <util/delay.h>         
+#include <avr/pgmspace.h>       
+#include <avr/eeprom.h>
 
-#include "shared_memory.h"
+#include "usbdrv.h"
+#include "oddebug.h"            
 #include "config.h"
+#include "requests.h"           
+#include "uart.h"
 #include "sram.h"
 #include "debug.h"
-#include "crc.h"
 #include "info.h"
+#include "dump.h"
+#include "crc.h"
+#include "usb_bulk.h"
+#include "timer.h"
+#include "watchdog.h"
+#include "rle.h"
+#include "loader.h"
+#include "command.h"
+#include "shared_memory.h"
+#include "testing.h"
 
 void test_read_write()
 {
@@ -104,3 +120,145 @@ void test_crc()
     test_non_zero_memory(0x000000, 0x10000);
 }
 
+
+
+
+
+
+/*----------------------------------------------------------------------*/
+/* FAT file system sample project for FatFs R0.06  (C)ChaN, 2008        */
+/*----------------------------------------------------------------------*/
+
+#include "ff.h"
+#include "diskio.h"
+#include "rtc.h"
+
+
+
+DWORD acc_size;				/* Work register for fs command */
+WORD acc_files, acc_dirs;
+FILINFO finfo;
+
+
+FATFS fatfs[2];				/* File system object for each logical drive */
+BYTE Buff[1024];			/* Working buffer */
+
+volatile WORD Timer;		/* 100Hz increment timer */
+
+
+
+#if _MULTI_PARTITION != 0
+    const PARTITION Drives[] = { {0,0}, {0,1} };
+#endif
+
+/*
+ISR(TIMER2_COMP_vect)
+{
+	Timer++;			
+	disk_timerproc();	
+}
+*/
+
+DWORD get_fattime ()
+{
+	RTC rtc;
+
+
+	//rtc_gettime(&rtc);
+
+	return	  ((DWORD)(rtc.year - 1980) << 25)
+			| ((DWORD)rtc.month << 21)
+			| ((DWORD)rtc.mday << 16)
+			| ((DWORD)rtc.hour << 11)
+			| ((DWORD)rtc.min << 5)
+			| ((DWORD)rtc.sec >> 1);
+}
+
+
+
+static
+FRESULT scan_files (char* path)
+{
+	DIR dirs;
+	FRESULT res;
+	int i;
+
+	if ((res = f_opendir(&dirs, path)) == FR_OK) {
+		i = strlen(path);
+		while (((res = f_readdir(&dirs, &finfo)) == FR_OK) && finfo.fname[0]) {
+			if (finfo.fattrib & AM_DIR) {
+				acc_dirs++;
+				*(path+i) = '/'; strcpy(path+i+1, &finfo.fname[0]);
+				res = scan_files(path);
+				*(path+i) = '\0';
+				if (res != FR_OK) break;
+			} else {
+				acc_files++;
+				acc_size += finfo.fsize;
+			}
+		}
+	}
+
+	return res;
+}
+
+
+static
+void put_rc (FRESULT rc)
+{
+	const prog_char *p;
+	static const prog_char str[] =
+		"OK\0" "DISK_ERR\0" "INT_ERR\0" "NOT_READY\0" "NO_FILE\0" "NO_PATH\0"
+		"INVALID_NAME\0" "DENIED\0" "EXIST\0" "INVALID_OBJECT\0" "WRITE_PROTECTED\0"
+		"INVALID_DRIVE\0" "NOT_ENABLED\0" "NO_FILE_SYSTEM\0" "MKFS_ABORTED\0" "TIMEOUT\0";
+	FRESULT i;
+
+	for (p = str, i = 0; i != rc && pgm_read_byte_near(p); i++) {
+		while(pgm_read_byte_near(p++));
+	}
+	printf("rc=%u FR_%s\n", (WORD)rc, p);
+}
+
+
+
+
+void test_sdcard (void)
+{
+	char *ptr, *ptr2;
+	DWORD p1, p2, p3;
+	BYTE res, b1;
+	WORD w1;
+	UINT s1, s2, cnt;
+	DWORD ofs, sect = 0;
+	RTC rtc;
+	FATFS *fs;
+	DIR dir;				/* Directory object */
+	FIL file1, file2;		/* File object */
+
+
+    printf("Try to init disk\n");
+    put_rc(f_mount((BYTE) 0, &fatfs[0]));
+    res = f_getfree("", &p2, &fs);
+    if (res)
+        put_rc(res);
+
+    printf(     "FAT TYPE = %u\nBYTES/CLUSTER = %lu\nNUMBER OF FATS = %u\n"
+                "ROOT DIR ENTRIES = %u\nSECTORS/FAT = %lu\nNUMBER OF CLUSTERS = %lu\n"
+                "FAT START = %lu\nDIR START LBA,CLUSTER = %lu\nDATA START LBA = %lu\n",
+                (WORD) fs->fs_type, (DWORD) fs->csize * 512,
+                (WORD) fs->n_fats, fs->n_rootdir, (DWORD) fs->sects_fat,
+                (DWORD) fs->max_clust - 2, fs->fatbase, fs->dirbase, fs->database);
+    acc_size = acc_files = acc_dirs = 0;
+
+    printf("scan files\n");
+    res = scan_files("");
+    if (res)
+        put_rc(res);
+    printf("%u FILES, %lu BYTES\n%u FOLDERS\n"
+                "%lu KB TOTAK DISK SPACE\n%lu KB AVAILABLE\n", acc_files,
+                acc_size, acc_dirs, (fs->max_clust - 2) * (fs->csize / 2),
+                p2 * (fs->csize / 2));
+
+}
+
+