/*----------------------------------------------------------------------------/
-/ Petit FatFs - FAT file system module R0.01a (C)ChaN, 2010
+/ Petit FatFs - FAT file system module R0.02a (C)ChaN, 2010
/-----------------------------------------------------------------------------/
/ Petit 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 terms.
+/ research and commercial developments under license policy of following trems.
/
/ Copyright (C) 2010, ChaN, all right reserved.
/
/ * Redistributions of source code must retain the above copyright notice.
/
/-----------------------------------------------------------------------------/
-/ Jun 15,'09 R0.01a Branched from FatFs R0.07b
+/ Jun 15,'09 R0.01a First release. (Branched from FatFs R0.07b.)
+/
+/ Dec 14,'09 R0.02 Added multiple code page support.
+/ Added write funciton.
+/ Changed stream read mode interface.
+/ Dec 07,'10 R0.02a Added some configuration options.
+/ Fixed fails to open objects with DBCS character.
/----------------------------------------------------------------------------*/
#include "pff.h" /* Petit FatFs configurations and declarations */
#include "diskio.h" /* Declarations of low level disk I/O functions */
+
/*--------------------------------------------------------------------------
- Private Work Area
+ Module Private Definitions
---------------------------------------------------------------------------*/
-static
-FATFS *FatFs; /* Pointer to the file system object (logical drive) */
+
+#if _FS_FAT32
+#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
+#else
+#define LD_CLUST(dir) LD_WORD(dir+DIR_FstClusLO)
+#endif
+
+
+/*--------------------------------------------------------*/
+/* DBCS code ranges and SBCS extend char conversion table */
+
+#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
+#define _DF1S 0x81 /* DBC 1st byte range 1 start */
+#define _DF1E 0x9F /* DBC 1st byte range 1 end */
+#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
+#define _DF2E 0xFC /* DBC 1st byte range 2 end */
+#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
+#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
+#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
+#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
+
+#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0x80
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 949 /* Korean */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x41
+#define _DS1E 0x5A
+#define _DS2S 0x61
+#define _DS2E 0x7A
+#define _DS3S 0x81
+#define _DS3E 0xFE
+
+#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
+#define _DF1S 0x81
+#define _DF1E 0xFE
+#define _DS1S 0x40
+#define _DS1E 0x7E
+#define _DS2S 0xA1
+#define _DS2E 0xFE
+
+#elif _CODE_PAGE == 437 /* U.S. (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 720 /* Arabic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 737 /* Greek (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \
+ 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 775 /* Baltic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF}
+
+#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \
+ 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \
+ 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 857 /* Turkish (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \
+ 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 866 /* Russian (OEM) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xA3,0xB4,0xB5,0xB6,0xB7,0xB8,0xA5,0xAA,0xBB,0xBC,0xBD,0xBC,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x82,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x80,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x8D,0x8E,0x8F, \
+ 0xA0,0xA2,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB2,0xA5,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xA3,0xBD,0xBD,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF}
+
+#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0xAd,0x9B,0x8C,0x9D,0xAE,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1253 /* Greek (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xA2,0xB8,0xB9,0xBA, \
+ 0xE0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xFB,0xBC,0xFD,0xBF,0xFF}
+
+#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x8A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0x9F}
+
+#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x8C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0x41,0xE1,0x41,0xE3,0xE4,0xE5,0xE6,0x43,0x45,0x45,0x45,0x45,0xEC,0xED,0x49,0x49,0xF0,0xF1,0xF2,0xF3,0x4F,0xF5,0xF6,0xF7,0xF8,0x55,0xFA,0x55,0x55,0xFD,0xFE,0xFF}
+
+#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \
+ 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xA8,0xB9,0xAA,0xBB,0xBC,0xBD,0xBE,0xAF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xFF}
+
+#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
+#define _DF1S 0
+#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0xAC,0x9D,0x9E,0x9F, \
+ 0xA0,0x21,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \
+ 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xEC,0xCD,0xCE,0xCF,0xD0,0xD1,0xF2,0xD3,0xD4,0xD5,0xD6,0xF7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xFE,0x9F}
+
+#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
+#define _DF1S 0
+
+#else
+#error Unknown code page
+
+#endif
+
+
+
+/* Character code support macros */
+
+#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
+#define IsLower(c) (((c)>='a')&&((c)<='z'))
+
+#if _DF1S /* DBCS configuration */
+
+#ifdef _DF2S /* Two 1st byte areas */
+#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
+#else /* One 1st byte area */
+#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
+#endif
+
+#ifdef _DS3S /* Three 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
+#else /* Two 2nd byte areas */
+#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
+#endif
+
+#else /* SBCS configuration */
+
+#define IsDBCS1(c) 0
+#define IsDBCS2(c) 0
+
+#endif /* _DF1S */
+
+
+/* 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 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
+
/*--------------------------------------------------------------------------
---------------------------------------------------------------------------*/
-/*-----------------------------------------------------------------------*/
-/* String functions */
-/*-----------------------------------------------------------------------*/
+static
+FATFS *FatFs; /* Pointer to the file system object (logical drive) */
+
/* Fill memory */
static
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;
-}
-
/*-----------------------------------------------------------------------*/
FATFS *fs = FatFs;
- if (clst < 2 || clst >= fs->max_clust) /* Range check */
+ if (clst < 2 || clst >= fs->n_fatent) /* Range check */
return 1;
switch (fs->fs_type) {
+#if _FS_FAT12
case FS_FAT12 :
bc = (WORD)clst; bc += bc / 2;
ofs = bc % 512; bc /= 512;
}
wc = LD_WORD(buf);
return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
-
+#endif
case FS_FAT16 :
if (disk_readp(buf, fs->fatbase + clst / 256, (WORD)(((WORD)clst % 256) * 2), 2)) break;
return LD_WORD(buf);
#endif
}
- return 1; /* An error occurred at the disk I/O layer */
+ return 1; /* An error occured at the disk I/O layer */
}
clst -= 2;
- if (clst >= (fs->max_clust - 2)) return 0; /* Invalid cluster# */
+ if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
return (DWORD)clst * fs->csize + fs->database;
}
dj->index = 0;
clst = dj->sclust;
- if (clst == 1 || clst >= fs->max_clust) /* Check start cluster range */
+ if (clst == 1 || clst >= fs->n_fatent) /* Check start cluster range */
return FR_DISK_ERR;
-#if _FS_FAT32
- if (!clst && fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
- clst = fs->dirbase;
-#endif
+ if (_FS_FAT32 && !clst && fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
+ clst = (CLUST)fs->dirbase;
dj->clust = clst; /* Current cluster */
dj->sect = clst ? clust2sect(clst) : fs->dirbase; /* Current sector */
/*-----------------------------------------------------------------------*/
static
-FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table, FR_DENIED:EOT and could not stretch */
+FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table */
DIR *dj /* Pointer to directory object */
)
{
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
return FR_NO_FILE;
- if (!(i & (16-1))) { /* Sector changed? */
+ if (!(i % 16)) { /* Sector changed? */
dj->sect++; /* Next sector */
if (dj->clust == 0) { /* Static table */
if (((i / 16) & (fs->csize-1)) == 0) { /* Cluster changed? */
clst = get_fat(dj->clust); /* Get next cluster */
if (clst <= 1) return FR_DISK_ERR;
- if (clst >= fs->max_clust) /* When it reached end of dynamic table */
+ if (clst >= fs->n_fatent) /* When it reached end of dynamic table */
return FR_NO_FILE; /* Report EOT */
dj->clust = clst; /* Initialize data for new cluster */
dj->sect = clust2sect(clst);
static
FRESULT dir_find (
- DIR *dj /* Pointer to the directory object linked to the file name */
+ DIR *dj, /* Pointer to the directory object linked to the file name */
+ BYTE *dir /* 32-byte working buffer */
)
{
FRESULT res;
- BYTE c, *dir;
+ BYTE c;
res = dir_rewind(dj); /* Rewind directory object */
if (res != FR_OK) return res;
- dir = FatFs->buf;
do {
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */
? FR_DISK_ERR : FR_OK;
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 */
+ res = dir_next(dj); /* Next entry */
} while (res == FR_OK);
return res;
#if _USE_DIR
static
FRESULT dir_read (
- DIR *dj /* Pointer to the directory object to store read object name */
+ DIR *dj, /* Pointer to the directory object to store read object name */
+ BYTE *dir /* 32-byte working buffer */
)
{
FRESULT res;
- BYTE a, c, *dir;
+ BYTE a, c;
res = FR_NO_FILE;
while (dj->sect) {
- dir = FatFs->buf;
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */
? FR_DISK_ERR : FR_OK;
if (res != FR_OK) break;
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 */
+ res = dir_next(dj); /* Next entry */
if (res != FR_OK) break;
}
/* Pick a segment and create the object name in directory form */
/*-----------------------------------------------------------------------*/
+#ifdef _EXCVT
+ static const BYTE cvt[] = _EXCVT;
+#endif
static
FRESULT create_name (
const char **path /* Pointer to pointer to the segment in the path string */
)
{
- BYTE c, ni, si, i, *sfn;
+ BYTE c, d, ni, si, i, *sfn;
const char *p;
/* Create file name in directory form */
p = *path;
for (;;) {
c = p[si++];
- if (c < ' ' || c == '/') break; /* Break on end of segment */
+ if (c <= ' ' || c == '/') break; /* Break on end of segment */
if (c == '.' || i >= ni) {
- if (ni != 8 || c != '.') return FR_INVALID_NAME;
+ if (ni != 8 || c != '.') break;
i = 8; ni = 11;
continue;
}
- if (c >= 0x7F || chk_chr(" +,;[=\\]\"*:<>\?|", c)) /* Reject unallowable chrs for SFN */
- return FR_INVALID_NAME;
- if (c >='a' && c <= 'z') c -= 0x20;
- sfn[i++] = c;
+#ifdef _EXCVT
+ if (c >= 0x80) /* To upper extended char (SBCS) */
+ c = cvt[c - 0x80];
+#endif
+ if (IsDBCS1(c) && i < ni - 1) { /* DBC 1st byte? */
+ d = p[si++]; /* Get 2nd byte */
+ sfn[i++] = c;
+ sfn[i++] = d;
+ } else { /* Single byte code */
+ if (IsLower(c)) c -= 0x20; /* toupper */
+ sfn[i++] = c;
+ }
}
- if (!i) return FR_INVALID_NAME; /* Reject null string */
- *path = &p[si]; /* Rerun pointer to the next segment */
+ *path = &p[si]; /* Rerurn pointer to the next segment */
- sfn[11] = (c < ' ') ? 1 : 0; /* Set last segment flag if end of path */
+ sfn[11] = (c <= ' ') ? 1 : 0; /* Set last segment flag if end of path */
return FR_OK;
}
static
void get_fileinfo ( /* No return code */
DIR *dj, /* Pointer to the directory object */
+ BYTE *dir, /* 32-byte working buffer */
FILINFO *fno /* Pointer to store the file information */
)
{
- BYTE i, c, *dir;
+ BYTE i, c;
char *p;
p = fno->fname;
if (dj->sect) {
- dir = FatFs->buf;
for (i = 0; i < 8; i++) { /* Copy file name body */
c = dir[i];
if (c == ' ') break;
static
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
DIR *dj, /* Directory object to return last directory and found object */
+ BYTE *dir, /* 32-byte working buffer */
const char *path /* Full-path string to find a file or directory */
)
{
FRESULT res;
- BYTE *dir;
+ while (*path == ' ') path++; /* Skip leading spaces */
if (*path == '/') path++; /* Strip heading separator */
dj->sclust = 0; /* Set start directory (always root dir) */
- if ((BYTE)*path < ' ') { /* Null path means the root directory */
+ if ((BYTE)*path <= ' ') { /* Null path means the root directory */
res = dir_rewind(dj);
- FatFs->buf[0] = 0;
+ dir[0] = 0;
} else { /* Follow path */
for (;;) {
res = create_name(dj, &path); /* Get a segment */
if (res != FR_OK) break;
- res = dir_find(dj); /* Find it */
+ res = dir_find(dj, dir); /* Find it */
if (res != FR_OK) { /* Could not find the object */
if (res == FR_NO_FILE && !*(dj->fn+11))
res = FR_NO_PATH;
break;
}
if (*(dj->fn+11)) break; /* Last segment match. Function completed. */
- dir = FatFs->buf; /* 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 =
-#if _FS_FAT32
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) |
-#endif
- LD_WORD(dir+DIR_FstClusLO);
+ dj->sclust = LD_CLUST(dir);
}
}
if (!disk_readp(buf, sect, BS_FilSysType, 2) && LD_WORD(buf) == 0x4146) /* Check FAT12/16 */
return 0;
-#if _FS_FAT32
- if (!disk_readp(buf, sect, BS_FilSysType32, 2) && LD_WORD(buf) == 0x4146) /* Check FAT32 */
+ if (_FS_FAT32 && !disk_readp(buf, sect, BS_FilSysType32, 2) && LD_WORD(buf) == 0x4146) /* Check FAT32 */
return 0;
-#endif
return 1;
}
/*-----------------------------------------------------------------------*/
-/* Mount/Unmount a Logical Drive */
+/* Mount/Unmount a Locical Drive */
/*-----------------------------------------------------------------------*/
FRESULT pf_mount (
}
}
if (fmt == 3) return FR_DISK_ERR;
- if (fmt) return FR_NO_FILESYSTEM; /* No valid FAT partition is found */
+ if (fmt) return FR_NO_FILESYSTEM; /* No valid FAT patition is found */
/* Initialize the file system object */
if (disk_readp(buf, bsect, 13, sizeof(buf))) return FR_DISK_ERR;
fsize *= buf[BPB_NumFATs-13]; /* Number of sectors in FAT area */
fs->fatbase = bsect + LD_WORD(buf+BPB_RsvdSecCnt-13); /* FAT start sector (lba) */
fs->csize = buf[BPB_SecPerClus-13]; /* Number of sectors per cluster */
- fs->n_rootdir = LD_WORD(buf+BPB_RootEntCnt-13); /* Number of root directory entries */
+ fs->n_rootdir = LD_WORD(buf+BPB_RootEntCnt-13); /* Nmuber of root directory entries */
tsect = LD_WORD(buf+BPB_TotSec16-13); /* Number of sectors on the file system */
if (!tsect) tsect = LD_DWORD(buf+BPB_TotSec32-13);
mclst = (tsect /* Last cluster# + 1 */
- LD_WORD(buf+BPB_RsvdSecCnt-13) - fsize - fs->n_rootdir / 16
) / fs->csize + 2;
- fs->max_clust = (CLUST)mclst;
+ fs->n_fatent = (CLUST)mclst;
- fmt = FS_FAT12; /* Determine the FAT sub type */
- if (mclst >= 0xFF7) fmt = FS_FAT16; /* Number of clusters >= 0xFF5 */
+ fmt = FS_FAT16; /* Determine the FAT sub type */
+ if (mclst < 0xFF7) /* Number of clusters < 0xFF5 */
+#if _FS_FAT12
+ fmt = FS_FAT12;
+#else
+ return FR_NO_FILESYSTEM;
+#endif
if (mclst >= 0xFFF7) /* Number of clusters >= 0xFFF5 */
#if _FS_FAT32
fmt = FS_FAT32;
#endif
fs->fs_type = fmt; /* FAT sub-type */
-#if _FS_FAT32
- if (fmt == FS_FAT32)
+ if (_FS_FAT32 && fmt == FS_FAT32)
fs->dirbase = LD_DWORD(buf+(BPB_RootClus-13)); /* Root directory start cluster */
else
-#endif
fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
fs->database = fs->fatbase + fsize + fs->n_rootdir / 16; /* Data start sector (lba) */
return FR_NOT_ENABLED;
fs->flag = 0;
- fs->buf = dir;
dj.fn = sp;
- res = follow_path(&dj, path); /* Follow the file path */
- if (res != FR_OK) return res; /* Follow failed */
+ res = follow_path(&dj, dir, path); /* Follow the file path */
+ if (res != FR_OK) return res; /* Follow failed */
if (!dir[0] || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
return FR_NO_FILE;
- fs->org_clust = /* File start cluster */
-#if _FS_FAT32
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) |
-#endif
- LD_WORD(dir+DIR_FstClusLO);
+ fs->org_clust = LD_CLUST(dir); /* File start cluster */
fs->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
fs->fptr = 0; /* File pointer */
- fs->flag = FA_READ;
+ fs->flag = FA_OPENED;
return FR_OK;
}
/*-----------------------------------------------------------------------*/
/* Read File */
/*-----------------------------------------------------------------------*/
+#if _USE_READ
FRESULT pf_read (
- void* dest, /* Pointer to the destination object */
- WORD btr, /* Number of bytes to read (bit15:destination) */
+ void* buff, /* Pointer to the read buffer (NULL:Forward data to the stream)*/
+ WORD btr, /* Number of bytes to read */
WORD* br /* Pointer to number of bytes read */
)
{
CLUST clst;
DWORD sect, remain;
WORD rcnt;
- BYTE *rbuff = dest;
+ BYTE cs, *rbuff = buff;
FATFS *fs = FatFs;
*br = 0;
if (!fs) return FR_NOT_ENABLED; /* Check file system */
- if (!(fs->flag & FA_READ))
- return FR_INVALID_OBJECT;
+ if (!(fs->flag & FA_OPENED)) /* Check if opened */
+ return FR_NOT_OPENED;
remain = fs->fsize - fs->fptr;
- if (btr > remain) btr = (UINT)remain; /* Truncate btr by remaining bytes */
+ if (btr > remain) btr = (WORD)remain; /* Truncate btr by remaining bytes */
- for ( ; btr; /* Repeat until all data transferred */
- rbuff += rcnt, fs->fptr += rcnt, *br += rcnt, btr -= rcnt) {
+ while (btr) { /* Repeat until all data transferred */
if ((fs->fptr % 512) == 0) { /* On the sector boundary? */
- if ((fs->fptr / 512 % fs->csize) == 0) { /* On the cluster boundary? */
+ cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
+ if (!cs) { /* On the cluster boundary? */
clst = (fs->fptr == 0) ? /* On the top of the file? */
fs->org_clust : get_fat(fs->curr_clust);
- if (clst <= 1) {
- fs->flag = 0; return FR_DISK_ERR;
- }
+ if (clst <= 1) goto fr_abort;
fs->curr_clust = clst; /* Update current cluster */
- fs->csect = 0; /* Reset sector offset in the cluster */
}
sect = clust2sect(fs->curr_clust); /* Get current sector */
- if (!sect) {
- fs->flag = 0; return FR_DISK_ERR;
- }
- sect += fs->csect;
- fs->dsect = sect;
- fs->csect++; /* Next sector address in the cluster */
+ if (!sect) goto fr_abort;
+ fs->dsect = sect + cs;
}
- rcnt = 512 - ((WORD)fs->fptr % 512); /* Get partial sector data from sector buffer */
+ rcnt = (WORD)(512 - (fs->fptr % 512)); /* Get partial sector data from sector buffer */
if (rcnt > btr) rcnt = btr;
- if (fs->flag & FA_STREAM) {
- dr = disk_readp(dest, fs->dsect, (WORD)(fs->fptr % 512), (WORD)(rcnt | 0x8000));
- } else {
- dr = disk_readp(rbuff, fs->dsect, (WORD)(fs->fptr % 512), rcnt);
+ dr = disk_readp(!buff ? 0 : rbuff, fs->dsect, (WORD)(fs->fptr % 512), rcnt);
+ if (dr) goto fr_abort;
+ fs->fptr += rcnt; rbuff += rcnt; /* Update pointers and counters */
+ btr -= rcnt; *br += rcnt;
+ }
+
+ return FR_OK;
+
+fr_abort:
+ fs->flag = 0;
+ return FR_DISK_ERR;
+}
+#endif
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Write File */
+/*-----------------------------------------------------------------------*/
+#if _USE_WRITE
+
+FRESULT pf_write (
+ const void* buff, /* Pointer to the data to be written */
+ WORD btw, /* Number of bytes to write (0:Finalize the current write operation) */
+ WORD* bw /* Pointer to number of bytes written */
+)
+{
+ CLUST clst;
+ DWORD sect, remain;
+ const BYTE *p = buff;
+ BYTE cs;
+ WORD wcnt;
+ FATFS *fs = FatFs;
+
+
+ *bw = 0;
+ if (!fs) return FR_NOT_ENABLED; /* Check file system */
+ if (!(fs->flag & FA_OPENED)) /* Check if opened */
+ return FR_NOT_OPENED;
+
+ if (!btw) { /* Finalize request */
+ if ((fs->flag & FA__WIP) && disk_writep(0, 0)) goto fw_abort;
+ fs->flag &= ~FA__WIP;
+ return FR_OK;
+ } else { /* Write data request */
+ if (!(fs->flag & FA__WIP)) /* Round-down fptr to the sector boundary */
+ fs->fptr &= 0xFFFFFE00;
+ }
+ remain = fs->fsize - fs->fptr;
+ if (btw > remain) btw = (WORD)remain; /* Truncate btw by remaining bytes */
+
+ while (btw) { /* Repeat until all data transferred */
+ if (((WORD)fs->fptr % 512) == 0) { /* On the sector boundary? */
+ cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
+ if (!cs) { /* On the cluster boundary? */
+ clst = (fs->fptr == 0) ? /* On the top of the file? */
+ fs->org_clust : get_fat(fs->curr_clust);
+ if (clst <= 1) goto fw_abort;
+ fs->curr_clust = clst; /* Update current cluster */
+ }
+ sect = clust2sect(fs->curr_clust); /* Get current sector */
+ if (!sect) goto fw_abort;
+ fs->dsect = sect + cs;
+ if (disk_writep(0, fs->dsect)) goto fw_abort; /* Initiate a sector write operation */
+ fs->flag |= FA__WIP;
}
- if (dr) {
- fs->flag = 0;
- return (dr == RES_STRERR) ? FR_STREAM_ERR : FR_DISK_ERR;
+ wcnt = 512 - ((WORD)fs->fptr % 512); /* Number of bytes to write to the sector */
+ if (wcnt > btw) wcnt = btw;
+ if (disk_writep(p, wcnt)) goto fw_abort; /* Send data to the sector */
+ fs->fptr += wcnt; p += wcnt; /* Update pointers and counters */
+ btw -= wcnt; *bw += wcnt;
+ if (((WORD)fs->fptr % 512) == 0) {
+ if (disk_writep(0, 0)) goto fw_abort; /* Finalize the currtent secter write operation */
+ fs->flag &= ~FA__WIP;
}
}
return FR_OK;
-}
+fw_abort:
+ fs->flag = 0;
+ return FR_DISK_ERR;
+}
+#endif
-#if _USE_LSEEK
/*-----------------------------------------------------------------------*/
/* Seek File R/W Pointer */
/*-----------------------------------------------------------------------*/
+#if _USE_LSEEK
FRESULT pf_lseek (
DWORD ofs /* File pointer from top of file */
)
{
CLUST clst;
- DWORD bcs, nsect, ifptr;
+ DWORD bcs, sect, ifptr;
FATFS *fs = FatFs;
if (!fs) return FR_NOT_ENABLED; /* Check file system */
- if (!(fs->flag & FA_READ))
- return FR_INVALID_OBJECT;
+ if (!(fs->flag & FA_OPENED)) /* Check if opened */
+ return FR_NOT_OPENED;
if (ofs > fs->fsize) ofs = fs->fsize; /* Clip offset with the file size */
ifptr = fs->fptr;
fs->curr_clust = clst;
}
while (ofs > bcs) { /* Cluster following loop */
- clst = get_fat(clst); /* Follow cluster chain if not in write mode */
- if (clst <= 1 || clst >= fs->max_clust) {
- fs->flag = 0; return FR_DISK_ERR;
- }
+ clst = get_fat(clst); /* Follow cluster chain */
+ if (clst <= 1 || clst >= fs->n_fatent) goto fe_abort;
fs->curr_clust = clst;
fs->fptr += bcs;
ofs -= bcs;
}
fs->fptr += ofs;
- fs->csect = (BYTE)(ofs / 512) + 1; /* Sector offset in the cluster */
- nsect = clust2sect(clst); /* Current sector */
- if (!nsect) {
- fs->flag = 0; return FR_DISK_ERR;
- }
- fs->dsect = nsect + fs->csect - 1;
+ sect = clust2sect(clst); /* Current sector */
+ if (!sect) goto fe_abort;
+ fs->dsect = sect + (fs->fptr / 512 & (fs->csize - 1));
}
return FR_OK;
+
+fe_abort:
+ fs->flag = 0;
+ return FR_DISK_ERR;
}
#endif
-#if _USE_DIR
+
/*-----------------------------------------------------------------------*/
-/* Create a Directory Object */
+/* Create a Directroy Object */
/*-----------------------------------------------------------------------*/
+#if _USE_DIR
FRESULT pf_opendir (
DIR *dj, /* Pointer to directory object to create */
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
- fs->buf = dir;
dj->fn = sp;
- res = follow_path(dj, path); /* Follow the path to the directory */
+ res = follow_path(dj, dir, path); /* Follow the path to the directory */
if (res == FR_OK) { /* Follow completed */
if (dir[0]) { /* It is not the root dir */
- if (dir[DIR_Attr] & AM_DIR) { /* The object is a directory */
- dj->sclust =
-#if _FS_FAT32
- ((DWORD)LD_WORD(dir+DIR_FstClusHI) << 16) |
-#endif
- LD_WORD(dir+DIR_FstClusLO);
- } else { /* The object is not a directory */
+ if (dir[DIR_Attr] & AM_DIR) /* The object is a directory */
+ dj->sclust = LD_CLUST(dir);
+ else /* The object is not a directory */
res = FR_NO_PATH;
- }
}
- if (res == FR_OK) {
+ if (res == FR_OK)
res = dir_rewind(dj); /* Rewind dir */
- }
}
if (res == FR_NO_FILE) res = FR_NO_PATH;
}
/*-----------------------------------------------------------------------*/
-/* Read Directory Entry in Sequence */
+/* Read Directory Entry in Sequense */
/*-----------------------------------------------------------------------*/
FRESULT pf_readdir (
if (!fs) { /* Check file system */
res = FR_NOT_ENABLED;
} else {
- fs->buf = dir;
dj->fn = sp;
if (!fno) {
res = dir_rewind(dj);
} else {
- res = dir_read(dj);
+ res = dir_read(dj, dir);
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 */
+ get_fileinfo(dj, dir, fno); /* Get the object information */
res = dir_next(dj); /* Increment index for next */
if (res == FR_NO_FILE) {
dj->sect = 0;
return res;
}
-#endif /* _FS_DIR */
+#endif /* _USE_DIR */
projects / pub / USBasp.git / blobdiff