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/*----------------------------------------------------------------------------/
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/ Petit FatFs - FAT file system module R0.02a (C)ChaN, 2010
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/-----------------------------------------------------------------------------/
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/ Petit FatFs module is an open source software to implement FAT file system to
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/ small embedded systems. This is a free software and is opened for education,
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/ research and commercial developments under license policy of following trems.
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/
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/ Copyright (C) 2010, ChaN, all right reserved.
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/
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/ * The Petit FatFs module is a free software and there is NO WARRANTY.
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/ * No restriction on use. You can use, modify and redistribute it for
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/ personal, non-profit or commercial use UNDER YOUR RESPONSIBILITY.
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/ * Redistributions of source code must retain the above copyright notice.
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/
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/-----------------------------------------------------------------------------/
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/ Jun 15,'09 R0.01a First release. (Branched from FatFs R0.07b.)
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/
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/ Dec 14,'09 R0.02 Added multiple code page support.
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/ Added write funciton.
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/ Changed stream read mode interface.
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/ Dec 07,'10 R0.02a Added some configuration options.
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/ Fixed fails to open objects with DBCS character.
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/----------------------------------------------------------------------------*/
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#include "pff.h" /* Petit FatFs configurations and declarations */
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#include "diskio.h" /* Declarations of low level disk I/O functions */
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/*--------------------------------------------------------------------------
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Module Private Definitions
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---------------------------------------------------------------------------*/
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#if _FS_FAT32
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#define LD_CLUST(dir) (((DWORD)LD_WORD(dir+DIR_FstClusHI)<<16) | LD_WORD(dir+DIR_FstClusLO))
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#else
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#define LD_CLUST(dir) LD_WORD(dir+DIR_FstClusLO)
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#endif
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/*--------------------------------------------------------*/
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/* DBCS code ranges and SBCS extend char conversion table */
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#if _CODE_PAGE == 932 /* Japanese Shift-JIS */
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#define _DF1S 0x81 /* DBC 1st byte range 1 start */
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#define _DF1E 0x9F /* DBC 1st byte range 1 end */
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#define _DF2S 0xE0 /* DBC 1st byte range 2 start */
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#define _DF2E 0xFC /* DBC 1st byte range 2 end */
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#define _DS1S 0x40 /* DBC 2nd byte range 1 start */
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#define _DS1E 0x7E /* DBC 2nd byte range 1 end */
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#define _DS2S 0x80 /* DBC 2nd byte range 2 start */
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#define _DS2E 0xFC /* DBC 2nd byte range 2 end */
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#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */
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#define _DF1S 0x81
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#define _DF1E 0xFE
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#define _DS1S 0x40
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#define _DS1E 0x7E
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#define _DS2S 0x80
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#define _DS2E 0xFE
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#elif _CODE_PAGE == 949 /* Korean */
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#define _DF1S 0x81
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#define _DF1E 0xFE
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#define _DS1S 0x41
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#define _DS1E 0x5A
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#define _DS2S 0x61
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#define _DS2E 0x7A
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#define _DS3S 0x81
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#define _DS3E 0xFE
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#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */
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#define _DF1S 0x81
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#define _DF1E 0xFE
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#define _DS1S 0x40
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#define _DS1E 0x7E
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#define _DS2S 0xA1
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#define _DS2E 0xFE
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#elif _CODE_PAGE == 437 /* U.S. (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 720 /* Arabic (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 737 /* Greek (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 775 /* Baltic (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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#elif _CODE_PAGE == 857 /* Turkish (OEM) */
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#define _DF1S 0
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#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, \
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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, \
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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, \
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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}
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138 |
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#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */
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#define _DF1S 0
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#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, \
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142 |
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, \
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143 |
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, \
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144 |
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}
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#elif _CODE_PAGE == 862 /* Hebrew (OEM) */
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#define _DF1S 0
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#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, \
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149 |
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, \
|
|
|
150 |
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, \
|
|
|
151 |
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}
|
|
|
152 |
|
|
|
153 |
#elif _CODE_PAGE == 866 /* Russian (OEM) */
|
|
|
154 |
#define _DF1S 0
|
|
|
155 |
#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, \
|
|
|
156 |
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, \
|
|
|
157 |
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, \
|
|
|
158 |
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}
|
|
|
159 |
|
|
|
160 |
#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */
|
|
|
161 |
#define _DF1S 0
|
|
|
162 |
#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, \
|
|
|
163 |
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, \
|
|
|
164 |
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, \
|
|
|
165 |
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}
|
|
|
166 |
|
|
|
167 |
#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */
|
|
|
168 |
#define _DF1S 0
|
|
|
169 |
#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, \
|
|
|
170 |
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, \
|
|
|
171 |
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, \
|
|
|
172 |
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}
|
|
|
173 |
|
|
|
174 |
#elif _CODE_PAGE == 1251 /* Cyrillic (Windows) */
|
|
|
175 |
#define _DF1S 0
|
|
|
176 |
#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, \
|
|
|
177 |
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, \
|
|
|
178 |
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, \
|
|
|
179 |
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}
|
|
|
180 |
|
|
|
181 |
#elif _CODE_PAGE == 1252 /* Latin 1 (Windows) */
|
|
|
182 |
#define _DF1S 0
|
|
|
183 |
#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, \
|
|
|
184 |
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, \
|
|
|
185 |
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, \
|
|
|
186 |
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}
|
|
|
187 |
|
|
|
188 |
#elif _CODE_PAGE == 1253 /* Greek (Windows) */
|
|
|
189 |
#define _DF1S 0
|
|
|
190 |
#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, \
|
|
|
191 |
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, \
|
|
|
192 |
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, \
|
|
|
193 |
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}
|
|
|
194 |
|
|
|
195 |
#elif _CODE_PAGE == 1254 /* Turkish (Windows) */
|
|
|
196 |
#define _DF1S 0
|
|
|
197 |
#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, \
|
|
|
198 |
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, \
|
|
|
199 |
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, \
|
|
|
200 |
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}
|
|
|
201 |
|
|
|
202 |
#elif _CODE_PAGE == 1255 /* Hebrew (Windows) */
|
|
|
203 |
#define _DF1S 0
|
|
|
204 |
#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, \
|
|
|
205 |
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, \
|
|
|
206 |
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, \
|
|
|
207 |
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}
|
|
|
208 |
|
|
|
209 |
#elif _CODE_PAGE == 1256 /* Arabic (Windows) */
|
|
|
210 |
#define _DF1S 0
|
|
|
211 |
#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, \
|
|
|
212 |
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, \
|
|
|
213 |
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, \
|
|
|
214 |
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}
|
|
|
215 |
|
|
|
216 |
#elif _CODE_PAGE == 1257 /* Baltic (Windows) */
|
|
|
217 |
#define _DF1S 0
|
|
|
218 |
#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, \
|
|
|
219 |
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, \
|
|
|
220 |
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, \
|
|
|
221 |
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}
|
|
|
222 |
|
|
|
223 |
#elif _CODE_PAGE == 1258 /* Vietnam (OEM, Windows) */
|
|
|
224 |
#define _DF1S 0
|
|
|
225 |
#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, \
|
|
|
226 |
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, \
|
|
|
227 |
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, \
|
|
|
228 |
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}
|
|
|
229 |
|
|
|
230 |
#elif _CODE_PAGE == 1 /* ASCII (for only non-LFN cfg) */
|
|
|
231 |
#define _DF1S 0
|
|
|
232 |
|
|
|
233 |
#else
|
|
|
234 |
#error Unknown code page
|
|
|
235 |
|
|
|
236 |
#endif
|
|
|
237 |
|
|
|
238 |
|
|
|
239 |
|
|
|
240 |
/* Character code support macros */
|
|
|
241 |
|
|
|
242 |
#define IsUpper(c) (((c)>='A')&&((c)<='Z'))
|
|
|
243 |
#define IsLower(c) (((c)>='a')&&((c)<='z'))
|
|
|
244 |
|
|
|
245 |
#if _DF1S /* DBCS configuration */
|
|
|
246 |
|
|
|
247 |
#ifdef _DF2S /* Two 1st byte areas */
|
|
|
248 |
#define IsDBCS1(c) (((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E) || ((BYTE)(c) >= _DF2S && (BYTE)(c) <= _DF2E))
|
|
|
249 |
#else /* One 1st byte area */
|
|
|
250 |
#define IsDBCS1(c) ((BYTE)(c) >= _DF1S && (BYTE)(c) <= _DF1E)
|
|
|
251 |
#endif
|
|
|
252 |
|
|
|
253 |
#ifdef _DS3S /* Three 2nd byte areas */
|
|
|
254 |
#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E) || ((BYTE)(c) >= _DS3S && (BYTE)(c) <= _DS3E))
|
|
|
255 |
#else /* Two 2nd byte areas */
|
|
|
256 |
#define IsDBCS2(c) (((BYTE)(c) >= _DS1S && (BYTE)(c) <= _DS1E) || ((BYTE)(c) >= _DS2S && (BYTE)(c) <= _DS2E))
|
|
|
257 |
#endif
|
|
|
258 |
|
|
|
259 |
#else /* SBCS configuration */
|
|
|
260 |
|
|
|
261 |
#define IsDBCS1(c) 0
|
|
|
262 |
#define IsDBCS2(c) 0
|
|
|
263 |
|
|
|
264 |
#endif /* _DF1S */
|
|
|
265 |
|
|
|
266 |
|
|
|
267 |
/* FatFs refers the members in the FAT structures with byte offset instead
|
|
|
268 |
/ of structure member because there are incompatibility of the packing option
|
|
|
269 |
/ between various compilers. */
|
|
|
270 |
|
|
|
271 |
#define BS_jmpBoot 0
|
|
|
272 |
#define BS_OEMName 3
|
|
|
273 |
#define BPB_BytsPerSec 11
|
|
|
274 |
#define BPB_SecPerClus 13
|
|
|
275 |
#define BPB_RsvdSecCnt 14
|
|
|
276 |
#define BPB_NumFATs 16
|
|
|
277 |
#define BPB_RootEntCnt 17
|
|
|
278 |
#define BPB_TotSec16 19
|
|
|
279 |
#define BPB_Media 21
|
|
|
280 |
#define BPB_FATSz16 22
|
|
|
281 |
#define BPB_SecPerTrk 24
|
|
|
282 |
#define BPB_NumHeads 26
|
|
|
283 |
#define BPB_HiddSec 28
|
|
|
284 |
#define BPB_TotSec32 32
|
|
|
285 |
#define BS_55AA 510
|
|
|
286 |
|
|
|
287 |
#define BS_DrvNum 36
|
|
|
288 |
#define BS_BootSig 38
|
|
|
289 |
#define BS_VolID 39
|
|
|
290 |
#define BS_VolLab 43
|
|
|
291 |
#define BS_FilSysType 54
|
|
|
292 |
|
|
|
293 |
#define BPB_FATSz32 36
|
|
|
294 |
#define BPB_ExtFlags 40
|
|
|
295 |
#define BPB_FSVer 42
|
|
|
296 |
#define BPB_RootClus 44
|
|
|
297 |
#define BPB_FSInfo 48
|
|
|
298 |
#define BPB_BkBootSec 50
|
|
|
299 |
#define BS_DrvNum32 64
|
|
|
300 |
#define BS_BootSig32 66
|
|
|
301 |
#define BS_VolID32 67
|
|
|
302 |
#define BS_VolLab32 71
|
|
|
303 |
#define BS_FilSysType32 82
|
|
|
304 |
|
|
|
305 |
#define MBR_Table 446
|
|
|
306 |
|
|
|
307 |
#define DIR_Name 0
|
|
|
308 |
#define DIR_Attr 11
|
|
|
309 |
#define DIR_NTres 12
|
|
|
310 |
#define DIR_CrtTime 14
|
|
|
311 |
#define DIR_CrtDate 16
|
|
|
312 |
#define DIR_FstClusHI 20
|
|
|
313 |
#define DIR_WrtTime 22
|
|
|
314 |
#define DIR_WrtDate 24
|
|
|
315 |
#define DIR_FstClusLO 26
|
|
|
316 |
#define DIR_FileSize 28
|
|
|
317 |
|
|
|
318 |
|
|
|
319 |
|
|
|
320 |
/*--------------------------------------------------------------------------
|
|
|
321 |
|
|
|
322 |
Private Functions
|
|
|
323 |
|
|
|
324 |
---------------------------------------------------------------------------*/
|
|
|
325 |
|
|
|
326 |
|
|
|
327 |
static
|
|
|
328 |
FATFS *FatFs; /* Pointer to the file system object (logical drive) */
|
|
|
329 |
|
|
|
330 |
|
|
|
331 |
/* Fill memory */
|
|
|
332 |
static
|
|
|
333 |
void mem_set (void* dst, int val, int cnt) {
|
|
|
334 |
char *d = (char*)dst;
|
|
|
335 |
while (cnt--) *d++ = (char)val;
|
|
|
336 |
}
|
|
|
337 |
|
|
|
338 |
/* Compare memory to memory */
|
|
|
339 |
static
|
|
|
340 |
int mem_cmp (const void* dst, const void* src, int cnt) {
|
|
|
341 |
const char *d = (const char *)dst, *s = (const char *)src;
|
|
|
342 |
int r = 0;
|
|
|
343 |
while (cnt-- && (r = *d++ - *s++) == 0) ;
|
|
|
344 |
return r;
|
|
|
345 |
}
|
|
|
346 |
|
|
|
347 |
|
|
|
348 |
|
|
|
349 |
/*-----------------------------------------------------------------------*/
|
|
|
350 |
/* FAT access - Read value of a FAT entry */
|
|
|
351 |
/*-----------------------------------------------------------------------*/
|
|
|
352 |
|
|
|
353 |
static
|
|
|
354 |
CLUST get_fat ( /* 1:IO error, Else:Cluster status */
|
|
|
355 |
CLUST clst /* Cluster# to get the link information */
|
|
|
356 |
)
|
|
|
357 |
{
|
|
|
358 |
WORD wc, bc, ofs;
|
|
|
359 |
BYTE buf[4];
|
|
|
360 |
FATFS *fs = FatFs;
|
|
|
361 |
|
|
|
362 |
|
|
|
363 |
if (clst < 2 || clst >= fs->n_fatent) /* Range check */
|
|
|
364 |
return 1;
|
|
|
365 |
|
|
|
366 |
switch (fs->fs_type) {
|
|
|
367 |
#if _FS_FAT12
|
|
|
368 |
case FS_FAT12 :
|
|
|
369 |
bc = (WORD)clst; bc += bc / 2;
|
|
|
370 |
ofs = bc % 512; bc /= 512;
|
|
|
371 |
if (ofs != 511) {
|
|
|
372 |
if (disk_readp(buf, fs->fatbase + bc, ofs, 2)) break;
|
|
|
373 |
} else {
|
|
|
374 |
if (disk_readp(buf, fs->fatbase + bc, 511, 1)) break;
|
|
|
375 |
if (disk_readp(buf+1, fs->fatbase + bc + 1, 0, 1)) break;
|
|
|
376 |
}
|
|
|
377 |
wc = LD_WORD(buf);
|
|
|
378 |
return (clst & 1) ? (wc >> 4) : (wc & 0xFFF);
|
|
|
379 |
#endif
|
|
|
380 |
case FS_FAT16 :
|
|
|
381 |
if (disk_readp(buf, fs->fatbase + clst / 256, (WORD)(((WORD)clst % 256) * 2), 2)) break;
|
|
|
382 |
return LD_WORD(buf);
|
|
|
383 |
#if _FS_FAT32
|
|
|
384 |
case FS_FAT32 :
|
|
|
385 |
if (disk_readp(buf, fs->fatbase + clst / 128, (WORD)(((WORD)clst % 128) * 4), 4)) break;
|
|
|
386 |
return LD_DWORD(buf) & 0x0FFFFFFF;
|
|
|
387 |
#endif
|
|
|
388 |
}
|
|
|
389 |
|
|
|
390 |
return 1; /* An error occured at the disk I/O layer */
|
|
|
391 |
}
|
|
|
392 |
|
|
|
393 |
|
|
|
394 |
|
|
|
395 |
|
|
|
396 |
/*-----------------------------------------------------------------------*/
|
|
|
397 |
/* Get sector# from cluster# */
|
|
|
398 |
/*-----------------------------------------------------------------------*/
|
|
|
399 |
|
|
|
400 |
static
|
|
|
401 |
DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
|
|
|
402 |
CLUST clst /* Cluster# to be converted */
|
|
|
403 |
)
|
|
|
404 |
{
|
|
|
405 |
FATFS *fs = FatFs;
|
|
|
406 |
|
|
|
407 |
|
|
|
408 |
clst -= 2;
|
|
|
409 |
if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */
|
|
|
410 |
return (DWORD)clst * fs->csize + fs->database;
|
|
|
411 |
}
|
|
|
412 |
|
|
|
413 |
|
|
|
414 |
|
|
|
415 |
|
|
|
416 |
/*-----------------------------------------------------------------------*/
|
|
|
417 |
/* Directory handling - Rewind directory index */
|
|
|
418 |
/*-----------------------------------------------------------------------*/
|
|
|
419 |
|
|
|
420 |
static
|
|
|
421 |
FRESULT dir_rewind (
|
|
|
422 |
DIR *dj /* Pointer to directory object */
|
|
|
423 |
)
|
|
|
424 |
{
|
|
|
425 |
CLUST clst;
|
|
|
426 |
FATFS *fs = FatFs;
|
|
|
427 |
|
|
|
428 |
|
|
|
429 |
dj->index = 0;
|
|
|
430 |
clst = dj->sclust;
|
|
|
431 |
if (clst == 1 || clst >= fs->n_fatent) /* Check start cluster range */
|
|
|
432 |
return FR_DISK_ERR;
|
|
|
433 |
if (_FS_FAT32 && !clst && fs->fs_type == FS_FAT32) /* Replace cluster# 0 with root cluster# if in FAT32 */
|
|
|
434 |
clst = (CLUST)fs->dirbase;
|
|
|
435 |
dj->clust = clst; /* Current cluster */
|
|
|
436 |
dj->sect = clst ? clust2sect(clst) : fs->dirbase; /* Current sector */
|
|
|
437 |
|
|
|
438 |
return FR_OK; /* Seek succeeded */
|
|
|
439 |
}
|
|
|
440 |
|
|
|
441 |
|
|
|
442 |
|
|
|
443 |
|
|
|
444 |
/*-----------------------------------------------------------------------*/
|
|
|
445 |
/* Directory handling - Move directory index next */
|
|
|
446 |
/*-----------------------------------------------------------------------*/
|
|
|
447 |
|
|
|
448 |
static
|
|
|
449 |
FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table */
|
|
|
450 |
DIR *dj /* Pointer to directory object */
|
|
|
451 |
)
|
|
|
452 |
{
|
|
|
453 |
CLUST clst;
|
|
|
454 |
WORD i;
|
|
|
455 |
FATFS *fs = FatFs;
|
|
|
456 |
|
|
|
457 |
|
|
|
458 |
i = dj->index + 1;
|
|
|
459 |
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */
|
|
|
460 |
return FR_NO_FILE;
|
|
|
461 |
|
|
|
462 |
if (!(i % 16)) { /* Sector changed? */
|
|
|
463 |
dj->sect++; /* Next sector */
|
|
|
464 |
|
|
|
465 |
if (dj->clust == 0) { /* Static table */
|
|
|
466 |
if (i >= fs->n_rootdir) /* Report EOT when end of table */
|
|
|
467 |
return FR_NO_FILE;
|
|
|
468 |
}
|
|
|
469 |
else { /* Dynamic table */
|
|
|
470 |
if (((i / 16) & (fs->csize-1)) == 0) { /* Cluster changed? */
|
|
|
471 |
clst = get_fat(dj->clust); /* Get next cluster */
|
|
|
472 |
if (clst <= 1) return FR_DISK_ERR;
|
|
|
473 |
if (clst >= fs->n_fatent) /* When it reached end of dynamic table */
|
|
|
474 |
return FR_NO_FILE; /* Report EOT */
|
|
|
475 |
dj->clust = clst; /* Initialize data for new cluster */
|
|
|
476 |
dj->sect = clust2sect(clst);
|
|
|
477 |
}
|
|
|
478 |
}
|
|
|
479 |
}
|
|
|
480 |
|
|
|
481 |
dj->index = i;
|
|
|
482 |
|
|
|
483 |
return FR_OK;
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
|
|
|
487 |
|
|
|
488 |
|
|
|
489 |
/*-----------------------------------------------------------------------*/
|
|
|
490 |
/* Directory handling - Find an object in the directory */
|
|
|
491 |
/*-----------------------------------------------------------------------*/
|
|
|
492 |
|
|
|
493 |
static
|
|
|
494 |
FRESULT dir_find (
|
|
|
495 |
DIR *dj, /* Pointer to the directory object linked to the file name */
|
|
|
496 |
BYTE *dir /* 32-byte working buffer */
|
|
|
497 |
)
|
|
|
498 |
{
|
|
|
499 |
FRESULT res;
|
|
|
500 |
BYTE c;
|
|
|
501 |
|
|
|
502 |
|
|
|
503 |
res = dir_rewind(dj); /* Rewind directory object */
|
|
|
504 |
if (res != FR_OK) return res;
|
|
|
505 |
|
|
|
506 |
do {
|
|
|
507 |
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */
|
|
|
508 |
? FR_DISK_ERR : FR_OK;
|
|
|
509 |
if (res != FR_OK) break;
|
|
|
510 |
c = dir[DIR_Name]; /* First character */
|
|
|
511 |
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
|
|
512 |
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */
|
|
|
513 |
break;
|
|
|
514 |
res = dir_next(dj); /* Next entry */
|
|
|
515 |
} while (res == FR_OK);
|
|
|
516 |
|
|
|
517 |
return res;
|
|
|
518 |
}
|
|
|
519 |
|
|
|
520 |
|
|
|
521 |
|
|
|
522 |
|
|
|
523 |
/*-----------------------------------------------------------------------*/
|
|
|
524 |
/* Read an object from the directory */
|
|
|
525 |
/*-----------------------------------------------------------------------*/
|
|
|
526 |
#if _USE_DIR
|
|
|
527 |
static
|
|
|
528 |
FRESULT dir_read (
|
|
|
529 |
DIR *dj, /* Pointer to the directory object to store read object name */
|
|
|
530 |
BYTE *dir /* 32-byte working buffer */
|
|
|
531 |
)
|
|
|
532 |
{
|
|
|
533 |
FRESULT res;
|
|
|
534 |
BYTE a, c;
|
|
|
535 |
|
|
|
536 |
|
|
|
537 |
res = FR_NO_FILE;
|
|
|
538 |
while (dj->sect) {
|
|
|
539 |
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */
|
|
|
540 |
? FR_DISK_ERR : FR_OK;
|
|
|
541 |
if (res != FR_OK) break;
|
|
|
542 |
c = dir[DIR_Name];
|
|
|
543 |
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */
|
|
|
544 |
a = dir[DIR_Attr] & AM_MASK;
|
|
|
545 |
if (c != 0xE5 && c != '.' && !(a & AM_VOL)) /* Is it a valid entry? */
|
|
|
546 |
break;
|
|
|
547 |
res = dir_next(dj); /* Next entry */
|
|
|
548 |
if (res != FR_OK) break;
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
if (res != FR_OK) dj->sect = 0;
|
|
|
552 |
|
|
|
553 |
return res;
|
|
|
554 |
}
|
|
|
555 |
#endif
|
|
|
556 |
|
|
|
557 |
|
|
|
558 |
|
|
|
559 |
/*-----------------------------------------------------------------------*/
|
|
|
560 |
/* Pick a segment and create the object name in directory form */
|
|
|
561 |
/*-----------------------------------------------------------------------*/
|
|
|
562 |
|
|
|
563 |
#ifdef _EXCVT
|
|
|
564 |
static const BYTE cvt[] = _EXCVT;
|
|
|
565 |
#endif
|
|
|
566 |
|
|
|
567 |
static
|
|
|
568 |
FRESULT create_name (
|
|
|
569 |
DIR *dj, /* Pointer to the directory object */
|
|
|
570 |
const char **path /* Pointer to pointer to the segment in the path string */
|
|
|
571 |
)
|
|
|
572 |
{
|
|
|
573 |
BYTE c, d, ni, si, i, *sfn;
|
|
|
574 |
const char *p;
|
|
|
575 |
|
|
|
576 |
/* Create file name in directory form */
|
|
|
577 |
sfn = dj->fn;
|
|
|
578 |
mem_set(sfn, ' ', 11);
|
|
|
579 |
si = i = 0; ni = 8;
|
|
|
580 |
p = *path;
|
|
|
581 |
for (;;) {
|
|
|
582 |
c = p[si++];
|
|
|
583 |
if (c <= ' ' || c == '/') break; /* Break on end of segment */
|
|
|
584 |
if (c == '.' || i >= ni) {
|
|
|
585 |
if (ni != 8 || c != '.') break;
|
|
|
586 |
i = 8; ni = 11;
|
|
|
587 |
continue;
|
|
|
588 |
}
|
|
|
589 |
#ifdef _EXCVT
|
|
|
590 |
if (c >= 0x80) /* To upper extended char (SBCS) */
|
|
|
591 |
c = cvt[c - 0x80];
|
|
|
592 |
#endif
|
|
|
593 |
if (IsDBCS1(c) && i < ni - 1) { /* DBC 1st byte? */
|
|
|
594 |
d = p[si++]; /* Get 2nd byte */
|
|
|
595 |
sfn[i++] = c;
|
|
|
596 |
sfn[i++] = d;
|
|
|
597 |
} else { /* Single byte code */
|
|
|
598 |
if (IsLower(c)) c -= 0x20; /* toupper */
|
|
|
599 |
sfn[i++] = c;
|
|
|
600 |
}
|
|
|
601 |
}
|
|
|
602 |
*path = &p[si]; /* Rerurn pointer to the next segment */
|
|
|
603 |
|
|
|
604 |
sfn[11] = (c <= ' ') ? 1 : 0; /* Set last segment flag if end of path */
|
|
|
605 |
|
|
|
606 |
return FR_OK;
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
|
|
|
610 |
|
|
|
611 |
|
|
|
612 |
/*-----------------------------------------------------------------------*/
|
|
|
613 |
/* Get file information from directory entry */
|
|
|
614 |
/*-----------------------------------------------------------------------*/
|
|
|
615 |
#if _USE_DIR
|
|
|
616 |
static
|
|
|
617 |
void get_fileinfo ( /* No return code */
|
|
|
618 |
DIR *dj, /* Pointer to the directory object */
|
|
|
619 |
BYTE *dir, /* 32-byte working buffer */
|
|
|
620 |
FILINFO *fno /* Pointer to store the file information */
|
|
|
621 |
)
|
|
|
622 |
{
|
|
|
623 |
BYTE i, c;
|
|
|
624 |
char *p;
|
|
|
625 |
|
|
|
626 |
|
|
|
627 |
p = fno->fname;
|
|
|
628 |
if (dj->sect) {
|
|
|
629 |
for (i = 0; i < 8; i++) { /* Copy file name body */
|
|
|
630 |
c = dir[i];
|
|
|
631 |
if (c == ' ') break;
|
|
|
632 |
if (c == 0x05) c = 0xE5;
|
|
|
633 |
*p++ = c;
|
|
|
634 |
}
|
|
|
635 |
if (dir[8] != ' ') { /* Copy file name extension */
|
|
|
636 |
*p++ = '.';
|
|
|
637 |
for (i = 8; i < 11; i++) {
|
|
|
638 |
c = dir[i];
|
|
|
639 |
if (c == ' ') break;
|
|
|
640 |
*p++ = c;
|
|
|
641 |
}
|
|
|
642 |
}
|
|
|
643 |
fno->fattrib = dir[DIR_Attr]; /* Attribute */
|
|
|
644 |
fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */
|
|
|
645 |
fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */
|
|
|
646 |
fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */
|
|
|
647 |
}
|
|
|
648 |
*p = 0;
|
|
|
649 |
}
|
|
|
650 |
#endif /* _USE_DIR */
|
|
|
651 |
|
|
|
652 |
|
|
|
653 |
|
|
|
654 |
/*-----------------------------------------------------------------------*/
|
|
|
655 |
/* Follow a file path */
|
|
|
656 |
/*-----------------------------------------------------------------------*/
|
|
|
657 |
|
|
|
658 |
static
|
|
|
659 |
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
|
|
|
660 |
DIR *dj, /* Directory object to return last directory and found object */
|
|
|
661 |
BYTE *dir, /* 32-byte working buffer */
|
|
|
662 |
const char *path /* Full-path string to find a file or directory */
|
|
|
663 |
)
|
|
|
664 |
{
|
|
|
665 |
FRESULT res;
|
|
|
666 |
|
|
|
667 |
|
|
|
668 |
while (*path == ' ') path++; /* Skip leading spaces */
|
|
|
669 |
if (*path == '/') path++; /* Strip heading separator */
|
|
|
670 |
dj->sclust = 0; /* Set start directory (always root dir) */
|
|
|
671 |
|
|
|
672 |
if ((BYTE)*path <= ' ') { /* Null path means the root directory */
|
|
|
673 |
res = dir_rewind(dj);
|
|
|
674 |
dir[0] = 0;
|
|
|
675 |
|
|
|
676 |
} else { /* Follow path */
|
|
|
677 |
for (;;) {
|
|
|
678 |
res = create_name(dj, &path); /* Get a segment */
|
|
|
679 |
if (res != FR_OK) break;
|
|
|
680 |
res = dir_find(dj, dir); /* Find it */
|
|
|
681 |
if (res != FR_OK) { /* Could not find the object */
|
|
|
682 |
if (res == FR_NO_FILE && !*(dj->fn+11))
|
|
|
683 |
res = FR_NO_PATH;
|
|
|
684 |
break;
|
|
|
685 |
}
|
|
|
686 |
if (*(dj->fn+11)) break; /* Last segment match. Function completed. */
|
|
|
687 |
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */
|
|
|
688 |
res = FR_NO_PATH; break;
|
|
|
689 |
}
|
|
|
690 |
dj->sclust = LD_CLUST(dir);
|
|
|
691 |
}
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
return res;
|
|
|
695 |
}
|
|
|
696 |
|
|
|
697 |
|
|
|
698 |
|
|
|
699 |
|
|
|
700 |
/*-----------------------------------------------------------------------*/
|
|
|
701 |
/* Check a sector if it is an FAT boot record */
|
|
|
702 |
/*-----------------------------------------------------------------------*/
|
|
|
703 |
|
|
|
704 |
static
|
|
|
705 |
BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */
|
|
|
706 |
BYTE *buf, /* Working buffer */
|
|
|
707 |
DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */
|
|
|
708 |
)
|
|
|
709 |
{
|
|
|
710 |
if (disk_readp(buf, sect, 510, 2)) /* Read the boot sector */
|
|
|
711 |
return 3;
|
|
|
712 |
if (LD_WORD(buf) != 0xAA55) /* Check record signature */
|
|
|
713 |
return 2;
|
|
|
714 |
|
|
|
715 |
if (!disk_readp(buf, sect, BS_FilSysType, 2) && LD_WORD(buf) == 0x4146) /* Check FAT12/16 */
|
|
|
716 |
return 0;
|
|
|
717 |
if (_FS_FAT32 && !disk_readp(buf, sect, BS_FilSysType32, 2) && LD_WORD(buf) == 0x4146) /* Check FAT32 */
|
|
|
718 |
return 0;
|
|
|
719 |
return 1;
|
|
|
720 |
}
|
|
|
721 |
|
|
|
722 |
|
|
|
723 |
|
|
|
724 |
|
|
|
725 |
/*--------------------------------------------------------------------------
|
|
|
726 |
|
|
|
727 |
Public Functions
|
|
|
728 |
|
|
|
729 |
--------------------------------------------------------------------------*/
|
|
|
730 |
|
|
|
731 |
|
|
|
732 |
|
|
|
733 |
/*-----------------------------------------------------------------------*/
|
|
|
734 |
/* Mount/Unmount a Locical Drive */
|
|
|
735 |
/*-----------------------------------------------------------------------*/
|
|
|
736 |
|
|
|
737 |
FRESULT pf_mount (
|
|
|
738 |
FATFS *fs /* Pointer to new file system object (NULL: Unmount) */
|
|
|
739 |
)
|
|
|
740 |
{
|
|
|
741 |
BYTE fmt, buf[36];
|
|
|
742 |
DWORD bsect, fsize, tsect, mclst;
|
|
|
743 |
|
|
|
744 |
|
|
|
745 |
FatFs = 0;
|
|
|
746 |
if (!fs) return FR_OK; /* Unregister fs object */
|
|
|
747 |
|
|
|
748 |
if (disk_initialize() & STA_NOINIT) /* Check if the drive is ready or not */
|
|
|
749 |
return FR_NOT_READY;
|
|
|
750 |
|
|
|
751 |
/* Search FAT partition on the drive */
|
|
|
752 |
bsect = 0;
|
|
|
753 |
fmt = check_fs(buf, bsect); /* Check sector 0 as an SFD format */
|
|
|
754 |
if (fmt == 1) { /* Not an FAT boot record, it may be FDISK format */
|
|
|
755 |
/* Check a partition listed in top of the partition table */
|
|
|
756 |
if (disk_readp(buf, bsect, MBR_Table, 16)) { /* 1st partition entry */
|
|
|
757 |
fmt = 3;
|
|
|
758 |
} else {
|
|
|
759 |
if (buf[4]) { /* Is the partition existing? */
|
|
|
760 |
bsect = LD_DWORD(&buf[8]); /* Partition offset in LBA */
|
|
|
761 |
fmt = check_fs(buf, bsect); /* Check the partition */
|
|
|
762 |
}
|
|
|
763 |
}
|
|
|
764 |
}
|
|
|
765 |
if (fmt == 3) return FR_DISK_ERR;
|
|
|
766 |
if (fmt) return FR_NO_FILESYSTEM; /* No valid FAT patition is found */
|
|
|
767 |
|
|
|
768 |
/* Initialize the file system object */
|
|
|
769 |
if (disk_readp(buf, bsect, 13, sizeof(buf))) return FR_DISK_ERR;
|
|
|
770 |
|
|
|
771 |
fsize = LD_WORD(buf+BPB_FATSz16-13); /* Number of sectors per FAT */
|
|
|
772 |
if (!fsize) fsize = LD_DWORD(buf+BPB_FATSz32-13);
|
|
|
773 |
|
|
|
774 |
fsize *= buf[BPB_NumFATs-13]; /* Number of sectors in FAT area */
|
|
|
775 |
fs->fatbase = bsect + LD_WORD(buf+BPB_RsvdSecCnt-13); /* FAT start sector (lba) */
|
|
|
776 |
fs->csize = buf[BPB_SecPerClus-13]; /* Number of sectors per cluster */
|
|
|
777 |
fs->n_rootdir = LD_WORD(buf+BPB_RootEntCnt-13); /* Nmuber of root directory entries */
|
|
|
778 |
tsect = LD_WORD(buf+BPB_TotSec16-13); /* Number of sectors on the file system */
|
|
|
779 |
if (!tsect) tsect = LD_DWORD(buf+BPB_TotSec32-13);
|
|
|
780 |
mclst = (tsect /* Last cluster# + 1 */
|
|
|
781 |
- LD_WORD(buf+BPB_RsvdSecCnt-13) - fsize - fs->n_rootdir / 16
|
|
|
782 |
) / fs->csize + 2;
|
|
|
783 |
fs->n_fatent = (CLUST)mclst;
|
|
|
784 |
|
|
|
785 |
fmt = FS_FAT16; /* Determine the FAT sub type */
|
|
|
786 |
if (mclst < 0xFF7) /* Number of clusters < 0xFF5 */
|
|
|
787 |
#if _FS_FAT12
|
|
|
788 |
fmt = FS_FAT12;
|
|
|
789 |
#else
|
|
|
790 |
return FR_NO_FILESYSTEM;
|
|
|
791 |
#endif
|
|
|
792 |
if (mclst >= 0xFFF7) /* Number of clusters >= 0xFFF5 */
|
|
|
793 |
#if _FS_FAT32
|
|
|
794 |
fmt = FS_FAT32;
|
|
|
795 |
#else
|
|
|
796 |
return FR_NO_FILESYSTEM;
|
|
|
797 |
#endif
|
|
|
798 |
|
|
|
799 |
fs->fs_type = fmt; /* FAT sub-type */
|
|
|
800 |
if (_FS_FAT32 && fmt == FS_FAT32)
|
|
|
801 |
fs->dirbase = LD_DWORD(buf+(BPB_RootClus-13)); /* Root directory start cluster */
|
|
|
802 |
else
|
|
|
803 |
fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */
|
|
|
804 |
fs->database = fs->fatbase + fsize + fs->n_rootdir / 16; /* Data start sector (lba) */
|
|
|
805 |
|
|
|
806 |
fs->flag = 0;
|
|
|
807 |
FatFs = fs;
|
|
|
808 |
|
|
|
809 |
return FR_OK;
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
|
|
|
813 |
|
|
|
814 |
|
|
|
815 |
/*-----------------------------------------------------------------------*/
|
|
|
816 |
/* Open or Create a File */
|
|
|
817 |
/*-----------------------------------------------------------------------*/
|
|
|
818 |
|
|
|
819 |
FRESULT pf_open (
|
|
|
820 |
const char *path /* Pointer to the file name */
|
|
|
821 |
)
|
|
|
822 |
{
|
|
|
823 |
FRESULT res;
|
|
|
824 |
DIR dj;
|
|
|
825 |
BYTE sp[12], dir[32];
|
|
|
826 |
FATFS *fs = FatFs;
|
|
|
827 |
|
|
|
828 |
|
|
|
829 |
if (!fs) /* Check file system */
|
|
|
830 |
return FR_NOT_ENABLED;
|
|
|
831 |
|
|
|
832 |
fs->flag = 0;
|
|
|
833 |
dj.fn = sp;
|
|
|
834 |
res = follow_path(&dj, dir, path); /* Follow the file path */
|
|
|
835 |
if (res != FR_OK) return res; /* Follow failed */
|
|
|
836 |
if (!dir[0] || (dir[DIR_Attr] & AM_DIR)) /* It is a directory */
|
|
|
837 |
return FR_NO_FILE;
|
|
|
838 |
|
|
|
839 |
fs->org_clust = LD_CLUST(dir); /* File start cluster */
|
|
|
840 |
fs->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */
|
|
|
841 |
fs->fptr = 0; /* File pointer */
|
|
|
842 |
fs->flag = FA_OPENED;
|
|
|
843 |
|
|
|
844 |
return FR_OK;
|
|
|
845 |
}
|
|
|
846 |
|
|
|
847 |
|
|
|
848 |
|
|
|
849 |
|
|
|
850 |
/*-----------------------------------------------------------------------*/
|
|
|
851 |
/* Read File */
|
|
|
852 |
/*-----------------------------------------------------------------------*/
|
|
|
853 |
#if _USE_READ
|
|
|
854 |
|
|
|
855 |
FRESULT pf_read (
|
|
|
856 |
void* buff, /* Pointer to the read buffer (NULL:Forward data to the stream)*/
|
|
|
857 |
WORD btr, /* Number of bytes to read */
|
|
|
858 |
WORD* br /* Pointer to number of bytes read */
|
|
|
859 |
)
|
|
|
860 |
{
|
|
|
861 |
DRESULT dr;
|
|
|
862 |
CLUST clst;
|
|
|
863 |
DWORD sect, remain;
|
|
|
864 |
WORD rcnt;
|
|
|
865 |
BYTE cs, *rbuff = buff;
|
|
|
866 |
FATFS *fs = FatFs;
|
|
|
867 |
|
|
|
868 |
|
|
|
869 |
*br = 0;
|
|
|
870 |
if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
|
|
871 |
if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
|
|
872 |
return FR_NOT_OPENED;
|
|
|
873 |
|
|
|
874 |
remain = fs->fsize - fs->fptr;
|
|
|
875 |
if (btr > remain) btr = (WORD)remain; /* Truncate btr by remaining bytes */
|
|
|
876 |
|
|
|
877 |
while (btr) { /* Repeat until all data transferred */
|
|
|
878 |
if ((fs->fptr % 512) == 0) { /* On the sector boundary? */
|
|
|
879 |
cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
|
|
|
880 |
if (!cs) { /* On the cluster boundary? */
|
|
|
881 |
clst = (fs->fptr == 0) ? /* On the top of the file? */
|
|
|
882 |
fs->org_clust : get_fat(fs->curr_clust);
|
|
|
883 |
if (clst <= 1) goto fr_abort;
|
|
|
884 |
fs->curr_clust = clst; /* Update current cluster */
|
|
|
885 |
}
|
|
|
886 |
sect = clust2sect(fs->curr_clust); /* Get current sector */
|
|
|
887 |
if (!sect) goto fr_abort;
|
|
|
888 |
fs->dsect = sect + cs;
|
|
|
889 |
}
|
|
|
890 |
rcnt = (WORD)(512 - (fs->fptr % 512)); /* Get partial sector data from sector buffer */
|
|
|
891 |
if (rcnt > btr) rcnt = btr;
|
|
|
892 |
dr = disk_readp(!buff ? 0 : rbuff, fs->dsect, (WORD)(fs->fptr % 512), rcnt);
|
|
|
893 |
if (dr) goto fr_abort;
|
|
|
894 |
fs->fptr += rcnt; rbuff += rcnt; /* Update pointers and counters */
|
|
|
895 |
btr -= rcnt; *br += rcnt;
|
|
|
896 |
}
|
|
|
897 |
|
|
|
898 |
return FR_OK;
|
|
|
899 |
|
|
|
900 |
fr_abort:
|
|
|
901 |
fs->flag = 0;
|
|
|
902 |
return FR_DISK_ERR;
|
|
|
903 |
}
|
|
|
904 |
#endif
|
|
|
905 |
|
|
|
906 |
|
|
|
907 |
|
|
|
908 |
/*-----------------------------------------------------------------------*/
|
|
|
909 |
/* Write File */
|
|
|
910 |
/*-----------------------------------------------------------------------*/
|
|
|
911 |
#if _USE_WRITE
|
|
|
912 |
|
|
|
913 |
FRESULT pf_write (
|
|
|
914 |
const void* buff, /* Pointer to the data to be written */
|
|
|
915 |
WORD btw, /* Number of bytes to write (0:Finalize the current write operation) */
|
|
|
916 |
WORD* bw /* Pointer to number of bytes written */
|
|
|
917 |
)
|
|
|
918 |
{
|
|
|
919 |
CLUST clst;
|
|
|
920 |
DWORD sect, remain;
|
|
|
921 |
const BYTE *p = buff;
|
|
|
922 |
BYTE cs;
|
|
|
923 |
WORD wcnt;
|
|
|
924 |
FATFS *fs = FatFs;
|
|
|
925 |
|
|
|
926 |
|
|
|
927 |
*bw = 0;
|
|
|
928 |
if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
|
|
929 |
if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
|
|
930 |
return FR_NOT_OPENED;
|
|
|
931 |
|
|
|
932 |
if (!btw) { /* Finalize request */
|
|
|
933 |
if ((fs->flag & FA__WIP) && disk_writep(0, 0)) goto fw_abort;
|
|
|
934 |
fs->flag &= ~FA__WIP;
|
|
|
935 |
return FR_OK;
|
|
|
936 |
} else { /* Write data request */
|
|
|
937 |
if (!(fs->flag & FA__WIP)) /* Round-down fptr to the sector boundary */
|
|
|
938 |
fs->fptr &= 0xFFFFFE00;
|
|
|
939 |
}
|
|
|
940 |
remain = fs->fsize - fs->fptr;
|
|
|
941 |
if (btw > remain) btw = (WORD)remain; /* Truncate btw by remaining bytes */
|
|
|
942 |
|
|
|
943 |
while (btw) { /* Repeat until all data transferred */
|
|
|
944 |
if (((WORD)fs->fptr % 512) == 0) { /* On the sector boundary? */
|
|
|
945 |
cs = (BYTE)(fs->fptr / 512 & (fs->csize - 1)); /* Sector offset in the cluster */
|
|
|
946 |
if (!cs) { /* On the cluster boundary? */
|
|
|
947 |
clst = (fs->fptr == 0) ? /* On the top of the file? */
|
|
|
948 |
fs->org_clust : get_fat(fs->curr_clust);
|
|
|
949 |
if (clst <= 1) goto fw_abort;
|
|
|
950 |
fs->curr_clust = clst; /* Update current cluster */
|
|
|
951 |
}
|
|
|
952 |
sect = clust2sect(fs->curr_clust); /* Get current sector */
|
|
|
953 |
if (!sect) goto fw_abort;
|
|
|
954 |
fs->dsect = sect + cs;
|
|
|
955 |
if (disk_writep(0, fs->dsect)) goto fw_abort; /* Initiate a sector write operation */
|
|
|
956 |
fs->flag |= FA__WIP;
|
|
|
957 |
}
|
|
|
958 |
wcnt = 512 - ((WORD)fs->fptr % 512); /* Number of bytes to write to the sector */
|
|
|
959 |
if (wcnt > btw) wcnt = btw;
|
|
|
960 |
if (disk_writep(p, wcnt)) goto fw_abort; /* Send data to the sector */
|
|
|
961 |
fs->fptr += wcnt; p += wcnt; /* Update pointers and counters */
|
|
|
962 |
btw -= wcnt; *bw += wcnt;
|
|
|
963 |
if (((WORD)fs->fptr % 512) == 0) {
|
|
|
964 |
if (disk_writep(0, 0)) goto fw_abort; /* Finalize the currtent secter write operation */
|
|
|
965 |
fs->flag &= ~FA__WIP;
|
|
|
966 |
}
|
|
|
967 |
}
|
|
|
968 |
|
|
|
969 |
return FR_OK;
|
|
|
970 |
|
|
|
971 |
fw_abort:
|
|
|
972 |
fs->flag = 0;
|
|
|
973 |
return FR_DISK_ERR;
|
|
|
974 |
}
|
|
|
975 |
#endif
|
|
|
976 |
|
|
|
977 |
|
|
|
978 |
|
|
|
979 |
/*-----------------------------------------------------------------------*/
|
|
|
980 |
/* Seek File R/W Pointer */
|
|
|
981 |
/*-----------------------------------------------------------------------*/
|
|
|
982 |
#if _USE_LSEEK
|
|
|
983 |
|
|
|
984 |
FRESULT pf_lseek (
|
|
|
985 |
DWORD ofs /* File pointer from top of file */
|
|
|
986 |
)
|
|
|
987 |
{
|
|
|
988 |
CLUST clst;
|
|
|
989 |
DWORD bcs, sect, ifptr;
|
|
|
990 |
FATFS *fs = FatFs;
|
|
|
991 |
|
|
|
992 |
|
|
|
993 |
if (!fs) return FR_NOT_ENABLED; /* Check file system */
|
|
|
994 |
if (!(fs->flag & FA_OPENED)) /* Check if opened */
|
|
|
995 |
return FR_NOT_OPENED;
|
|
|
996 |
|
|
|
997 |
if (ofs > fs->fsize) ofs = fs->fsize; /* Clip offset with the file size */
|
|
|
998 |
ifptr = fs->fptr;
|
|
|
999 |
fs->fptr = 0;
|
|
|
1000 |
if (ofs > 0) {
|
|
|
1001 |
bcs = (DWORD)fs->csize * 512; /* Cluster size (byte) */
|
|
|
1002 |
if (ifptr > 0 &&
|
|
|
1003 |
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */
|
|
|
1004 |
fs->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */
|
|
|
1005 |
ofs -= fs->fptr;
|
|
|
1006 |
clst = fs->curr_clust;
|
|
|
1007 |
} else { /* When seek to back cluster, */
|
|
|
1008 |
clst = fs->org_clust; /* start from the first cluster */
|
|
|
1009 |
fs->curr_clust = clst;
|
|
|
1010 |
}
|
|
|
1011 |
while (ofs > bcs) { /* Cluster following loop */
|
|
|
1012 |
clst = get_fat(clst); /* Follow cluster chain */
|
|
|
1013 |
if (clst <= 1 || clst >= fs->n_fatent) goto fe_abort;
|
|
|
1014 |
fs->curr_clust = clst;
|
|
|
1015 |
fs->fptr += bcs;
|
|
|
1016 |
ofs -= bcs;
|
|
|
1017 |
}
|
|
|
1018 |
fs->fptr += ofs;
|
|
|
1019 |
sect = clust2sect(clst); /* Current sector */
|
|
|
1020 |
if (!sect) goto fe_abort;
|
|
|
1021 |
fs->dsect = sect + (fs->fptr / 512 & (fs->csize - 1));
|
|
|
1022 |
}
|
|
|
1023 |
|
|
|
1024 |
return FR_OK;
|
|
|
1025 |
|
|
|
1026 |
fe_abort:
|
|
|
1027 |
fs->flag = 0;
|
|
|
1028 |
return FR_DISK_ERR;
|
|
|
1029 |
}
|
|
|
1030 |
#endif
|
|
|
1031 |
|
|
|
1032 |
|
|
|
1033 |
|
|
|
1034 |
/*-----------------------------------------------------------------------*/
|
|
|
1035 |
/* Create a Directroy Object */
|
|
|
1036 |
/*-----------------------------------------------------------------------*/
|
|
|
1037 |
#if _USE_DIR
|
|
|
1038 |
|
|
|
1039 |
FRESULT pf_opendir (
|
|
|
1040 |
DIR *dj, /* Pointer to directory object to create */
|
|
|
1041 |
const char *path /* Pointer to the directory path */
|
|
|
1042 |
)
|
|
|
1043 |
{
|
|
|
1044 |
FRESULT res;
|
|
|
1045 |
BYTE sp[12], dir[32];
|
|
|
1046 |
FATFS *fs = FatFs;
|
|
|
1047 |
|
|
|
1048 |
|
|
|
1049 |
if (!fs) { /* Check file system */
|
|
|
1050 |
res = FR_NOT_ENABLED;
|
|
|
1051 |
} else {
|
|
|
1052 |
dj->fn = sp;
|
|
|
1053 |
res = follow_path(dj, dir, path); /* Follow the path to the directory */
|
|
|
1054 |
if (res == FR_OK) { /* Follow completed */
|
|
|
1055 |
if (dir[0]) { /* It is not the root dir */
|
|
|
1056 |
if (dir[DIR_Attr] & AM_DIR) /* The object is a directory */
|
|
|
1057 |
dj->sclust = LD_CLUST(dir);
|
|
|
1058 |
else /* The object is not a directory */
|
|
|
1059 |
res = FR_NO_PATH;
|
|
|
1060 |
}
|
|
|
1061 |
if (res == FR_OK)
|
|
|
1062 |
res = dir_rewind(dj); /* Rewind dir */
|
|
|
1063 |
}
|
|
|
1064 |
if (res == FR_NO_FILE) res = FR_NO_PATH;
|
|
|
1065 |
}
|
|
|
1066 |
|
|
|
1067 |
return res;
|
|
|
1068 |
}
|
|
|
1069 |
|
|
|
1070 |
|
|
|
1071 |
|
|
|
1072 |
|
|
|
1073 |
/*-----------------------------------------------------------------------*/
|
|
|
1074 |
/* Read Directory Entry in Sequense */
|
|
|
1075 |
/*-----------------------------------------------------------------------*/
|
|
|
1076 |
|
|
|
1077 |
FRESULT pf_readdir (
|
|
|
1078 |
DIR *dj, /* Pointer to the open directory object */
|
|
|
1079 |
FILINFO *fno /* Pointer to file information to return */
|
|
|
1080 |
)
|
|
|
1081 |
{
|
|
|
1082 |
FRESULT res;
|
|
|
1083 |
BYTE sp[12], dir[32];
|
|
|
1084 |
FATFS *fs = FatFs;
|
|
|
1085 |
|
|
|
1086 |
|
|
|
1087 |
if (!fs) { /* Check file system */
|
|
|
1088 |
res = FR_NOT_ENABLED;
|
|
|
1089 |
} else {
|
|
|
1090 |
dj->fn = sp;
|
|
|
1091 |
if (!fno) {
|
|
|
1092 |
res = dir_rewind(dj);
|
|
|
1093 |
} else {
|
|
|
1094 |
res = dir_read(dj, dir);
|
|
|
1095 |
if (res == FR_NO_FILE) {
|
|
|
1096 |
dj->sect = 0;
|
|
|
1097 |
res = FR_OK;
|
|
|
1098 |
}
|
|
|
1099 |
if (res == FR_OK) { /* A valid entry is found */
|
|
|
1100 |
get_fileinfo(dj, dir, fno); /* Get the object information */
|
|
|
1101 |
res = dir_next(dj); /* Increment index for next */
|
|
|
1102 |
if (res == FR_NO_FILE) {
|
|
|
1103 |
dj->sect = 0;
|
|
|
1104 |
res = FR_OK;
|
|
|
1105 |
}
|
|
|
1106 |
}
|
|
|
1107 |
}
|
|
|
1108 |
}
|
|
|
1109 |
|
|
|
1110 |
return res;
|
|
|
1111 |
}
|
|
|
1112 |
|
|
|
1113 |
#endif /* _USE_DIR */
|
|
|
1114 |
|