Example #1
0
static
FRESULT dir_read (
	DIR *dj,		/* Pointer to the directory object to store read object name */
	BYTE *dir		/* 32-byte working buffer */
)
{
	FRESULT res;
	BYTE a, c;


	res = FR_NO_FILE;
	while (dj->sect) {
		res = disk_readp(dir, dj->sect, (dj->index % 16) * 32, 32)	/* Read an entry */
			? FR_DISK_ERR : FR_OK;
		if (res != FR_OK) break;
		c = dir[DIR_Name];
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
		a = dir[DIR_Attr] & AM_MASK;
		if (c != 0xE5 && c != '.' && !(a & AM_VOL))	/* Is it a valid entry? */
			break;
		res = dir_next(dj);			/* Next entry */
		if (res != FR_OK) break;
	}

	if (res != FR_OK) dj->sect = 0;

	return res;
}
Example #2
0
static
FRESULT dir_find (
	DIR *dj,		/* Pointer to the directory object linked to the file name */
	BYTE *dir		/* 32-byte working buffer */
)
{
	FRESULT res;
	BYTE c;


	res = dir_rewind(dj);			/* Rewind directory object */
	if (res != FR_OK) return res;

	do {
		res = disk_readp(dir, dj->sect, (dj->index % 16) * 32, 32)	/* Read an entry */
			? FR_DISK_ERR : FR_OK;
		if (res != FR_OK) break;
		c = dir[DIR_Name];	/* First character */
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
		if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
			break;
		res = dir_next(dj);					/* Next entry */
	} while (res == FR_OK);

	return res;
}
Example #3
0
static
FRESULT dir_find (
	DIR *dj,		/* Pointer to the directory object linked to the file name */
	BYTE *dir		/* 32-byte working buffer */
)
{
	FRESULT res;
	BYTE c;


	res = dir_rewind(dj);			/* Rewind directory object */
	if (res != FR_OK) return res;

	do {
		if ( (dj->index & 7) == 0 )
		{ // Need to read data
			res = disk_readp( Abuff.DirBuffer, dj->sect, (WORD)((dj->index & 8) * 32), 256)	/* Read half a sector */
				? FR_DISK_ERR : FR_OK;
		}
		else
		{
			res = FR_OK ;
		}
		if (res != FR_OK) break;
		memcpy( dir, &Abuff.DirBuffer[((dj->index % 8) * 32)], 32 ) ;
		c = dir[DIR_Name];	/* First character */
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
		if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
			break;
		res = dir_next(dj);					/* Next entry */
	} while (res == FR_OK);

	return res;
}
Example #4
0
FRESULT pf_readdir (
	DIR *dj,			/* Pointer to the open directory object */
	FILINFO *fno		/* Pointer to file information to return */
)
{
	FRESULT res;
	BYTE sp[12], dir[32];
	FATFS *fs = FatFs;


	if (!fs) {				/* Check file system */
		res = FR_NOT_ENABLED;
	} else {
		dj->fn = sp;
		if (!fno) {
			res = dir_rewind(dj);
		} else {
			res = dir_read(dj, dir);	/* Get current directory item */
			if (res == FR_NO_FILE) res = FR_OK;
			if (res == FR_OK) {				/* A valid entry is found */
				get_fileinfo(dj, dir, fno);	/* Get the object information */
				res = dir_next(dj);			/* Increment read index for next */
				if (res == FR_NO_FILE) res = FR_OK;
			}
		}
	}

	return res;
}
Example #5
0
static FRESULT dir_read(DIR *dj)
{
    FRESULT res;
    u8 adir,c,*dir;
    
	res = FR_NO_FILE;
	dir = FatFs->buf;
	while (dj->sect) {
		res = disk_readp(dir, dj->sect, (u16)((dj->index % 16) * 32), 32)	/* Read an entry */
			? FR_DISK_ERR : FR_OK;
		if (res != FR_OK) break;
		c = dir[DIR_Name];
		if (c == 0) { res = FR_NO_FILE; break; }	/* Reached to end of table */
		adir = dir[DIR_Attr] & AM_MASK;
		if (c != 0xE5 && c != '.' && !(adir & AM_VOL))	/* Is it a valid entry? */
			break;
		res = dir_next(dj);				/* Next entry */
		if (res != FR_OK) break;
	}

	if (res != FR_OK) dj->sect = 0;

	return res;
}