0,0 → 1,1114 |
/*----------------------------------------------------------------------------/ |
/ 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 trems. |
/ |
/ Copyright (C) 2010, ChaN, all right reserved. |
/ |
/ * The Petit FatFs module is a free software and there is NO WARRANTY. |
/ * No restriction on use. You can use, modify and redistribute it for |
/ personal, non-profit or commercial use UNDER YOUR RESPONSIBILITY. |
/ * Redistributions of source code must retain the above copyright notice. |
/ |
/-----------------------------------------------------------------------------/ |
/ 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 */ |
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/*-------------------------------------------------------------------------- |
|
Module Private Definitions |
|
---------------------------------------------------------------------------*/ |
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#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 */ |
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#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 |
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#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 |
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#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 |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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} |
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#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 |
|
|
|
/*-------------------------------------------------------------------------- |
|
Private Functions |
|
---------------------------------------------------------------------------*/ |
|
|
static |
FATFS *FatFs; /* Pointer to the file system object (logical drive) */ |
|
|
/* Fill memory */ |
static |
void mem_set (void* dst, int val, int cnt) { |
char *d = (char*)dst; |
while (cnt--) *d++ = (char)val; |
} |
|
/* Compare memory to memory */ |
static |
int mem_cmp (const void* dst, const void* src, int cnt) { |
const char *d = (const char *)dst, *s = (const char *)src; |
int r = 0; |
while (cnt-- && (r = *d++ - *s++) == 0) ; |
return r; |
} |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* FAT access - Read value of a FAT entry */ |
/*-----------------------------------------------------------------------*/ |
|
static |
CLUST get_fat ( /* 1:IO error, Else:Cluster status */ |
CLUST clst /* Cluster# to get the link information */ |
) |
{ |
WORD wc, bc, ofs; |
BYTE buf[4]; |
FATFS *fs = FatFs; |
|
|
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; |
if (ofs != 511) { |
if (disk_readp(buf, fs->fatbase + bc, ofs, 2)) break; |
} else { |
if (disk_readp(buf, fs->fatbase + bc, 511, 1)) break; |
if (disk_readp(buf+1, fs->fatbase + bc + 1, 0, 1)) break; |
} |
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); |
#if _FS_FAT32 |
case FS_FAT32 : |
if (disk_readp(buf, fs->fatbase + clst / 128, (WORD)(((WORD)clst % 128) * 4), 4)) break; |
return LD_DWORD(buf) & 0x0FFFFFFF; |
#endif |
} |
|
return 1; /* An error occured at the disk I/O layer */ |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Get sector# from cluster# */ |
/*-----------------------------------------------------------------------*/ |
|
static |
DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */ |
CLUST clst /* Cluster# to be converted */ |
) |
{ |
FATFS *fs = FatFs; |
|
|
clst -= 2; |
if (clst >= (fs->n_fatent - 2)) return 0; /* Invalid cluster# */ |
return (DWORD)clst * fs->csize + fs->database; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Directory handling - Rewind directory index */ |
/*-----------------------------------------------------------------------*/ |
|
static |
FRESULT dir_rewind ( |
DIR *dj /* Pointer to directory object */ |
) |
{ |
CLUST clst; |
FATFS *fs = FatFs; |
|
|
dj->index = 0; |
clst = dj->sclust; |
if (clst == 1 || clst >= fs->n_fatent) /* Check start cluster range */ |
return FR_DISK_ERR; |
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 */ |
|
return FR_OK; /* Seek succeeded */ |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Directory handling - Move directory index next */ |
/*-----------------------------------------------------------------------*/ |
|
static |
FRESULT dir_next ( /* FR_OK:Succeeded, FR_NO_FILE:End of table */ |
DIR *dj /* Pointer to directory object */ |
) |
{ |
CLUST clst; |
WORD i; |
FATFS *fs = FatFs; |
|
|
i = dj->index + 1; |
if (!i || !dj->sect) /* Report EOT when index has reached 65535 */ |
return FR_NO_FILE; |
|
if (!(i % 16)) { /* Sector changed? */ |
dj->sect++; /* Next sector */ |
|
if (dj->clust == 0) { /* Static table */ |
if (i >= fs->n_rootdir) /* Report EOT when end of table */ |
return FR_NO_FILE; |
} |
else { /* Dynamic 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->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); |
} |
} |
} |
|
dj->index = i; |
|
return FR_OK; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Directory handling - Find an object in the directory */ |
/*-----------------------------------------------------------------------*/ |
|
static |
FRESULT dir_find ( |
DIR *dj, /* Pointer to the directory object linked to the file name */ |
BYTE *dir /* 32-byte working buffer */ |
) |
{ |
FRESULT res; |
BYTE c; |
|
|
res = dir_rewind(dj); /* Rewind directory object */ |
if (res != FR_OK) return res; |
|
do { |
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */ |
? FR_DISK_ERR : FR_OK; |
if (res != FR_OK) break; |
c = dir[DIR_Name]; /* First character */ |
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
if (!(dir[DIR_Attr] & AM_VOL) && !mem_cmp(dir, dj->fn, 11)) /* Is it a valid entry? */ |
break; |
res = dir_next(dj); /* Next entry */ |
} while (res == FR_OK); |
|
return res; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Read an object from the directory */ |
/*-----------------------------------------------------------------------*/ |
#if _USE_DIR |
static |
FRESULT dir_read ( |
DIR *dj, /* Pointer to the directory object to store read object name */ |
BYTE *dir /* 32-byte working buffer */ |
) |
{ |
FRESULT res; |
BYTE a, c; |
|
|
res = FR_NO_FILE; |
while (dj->sect) { |
res = disk_readp(dir, dj->sect, (WORD)((dj->index % 16) * 32), 32) /* Read an entry */ |
? FR_DISK_ERR : FR_OK; |
if (res != FR_OK) break; |
c = dir[DIR_Name]; |
if (c == 0) { res = FR_NO_FILE; break; } /* Reached to end of table */ |
a = dir[DIR_Attr] & AM_MASK; |
if (c != 0xE5 && c != '.' && !(a & AM_VOL)) /* Is it a valid entry? */ |
break; |
res = dir_next(dj); /* Next entry */ |
if (res != FR_OK) break; |
} |
|
if (res != FR_OK) dj->sect = 0; |
|
return res; |
} |
#endif |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Pick a segment and create the object name in directory form */ |
/*-----------------------------------------------------------------------*/ |
|
#ifdef _EXCVT |
static const BYTE cvt[] = _EXCVT; |
#endif |
|
static |
FRESULT create_name ( |
DIR *dj, /* Pointer to the directory object */ |
const char **path /* Pointer to pointer to the segment in the path string */ |
) |
{ |
BYTE c, d, ni, si, i, *sfn; |
const char *p; |
|
/* Create file name in directory form */ |
sfn = dj->fn; |
mem_set(sfn, ' ', 11); |
si = i = 0; ni = 8; |
p = *path; |
for (;;) { |
c = p[si++]; |
if (c <= ' ' || c == '/') break; /* Break on end of segment */ |
if (c == '.' || i >= ni) { |
if (ni != 8 || c != '.') break; |
i = 8; ni = 11; |
continue; |
} |
#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; |
} |
} |
*path = &p[si]; /* Rerurn pointer to the next segment */ |
|
sfn[11] = (c <= ' ') ? 1 : 0; /* Set last segment flag if end of path */ |
|
return FR_OK; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Get file information from directory entry */ |
/*-----------------------------------------------------------------------*/ |
#if _USE_DIR |
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; |
char *p; |
|
|
p = fno->fname; |
if (dj->sect) { |
for (i = 0; i < 8; i++) { /* Copy file name body */ |
c = dir[i]; |
if (c == ' ') break; |
if (c == 0x05) c = 0xE5; |
*p++ = c; |
} |
if (dir[8] != ' ') { /* Copy file name extension */ |
*p++ = '.'; |
for (i = 8; i < 11; i++) { |
c = dir[i]; |
if (c == ' ') break; |
*p++ = c; |
} |
} |
fno->fattrib = dir[DIR_Attr]; /* Attribute */ |
fno->fsize = LD_DWORD(dir+DIR_FileSize); /* Size */ |
fno->fdate = LD_WORD(dir+DIR_WrtDate); /* Date */ |
fno->ftime = LD_WORD(dir+DIR_WrtTime); /* Time */ |
} |
*p = 0; |
} |
#endif /* _USE_DIR */ |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Follow a file path */ |
/*-----------------------------------------------------------------------*/ |
|
static |
FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */ |
DIR *dj, /* Directory object to return last directory and found object */ |
BYTE *dir, /* 32-byte working buffer */ |
const char *path /* Full-path string to find a file or directory */ |
) |
{ |
FRESULT res; |
|
|
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 */ |
res = dir_rewind(dj); |
dir[0] = 0; |
|
} else { /* Follow path */ |
for (;;) { |
res = create_name(dj, &path); /* Get a segment */ |
if (res != FR_OK) break; |
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. */ |
if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow because it is a file */ |
res = FR_NO_PATH; break; |
} |
dj->sclust = LD_CLUST(dir); |
} |
} |
|
return res; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Check a sector if it is an FAT boot record */ |
/*-----------------------------------------------------------------------*/ |
|
static |
BYTE check_fs ( /* 0:The FAT boot record, 1:Valid boot record but not an FAT, 2:Not a boot record, 3:Error */ |
BYTE *buf, /* Working buffer */ |
DWORD sect /* Sector# (lba) to check if it is an FAT boot record or not */ |
) |
{ |
if (disk_readp(buf, sect, 510, 2)) /* Read the boot sector */ |
return 3; |
if (LD_WORD(buf) != 0xAA55) /* Check record signature */ |
return 2; |
|
if (!disk_readp(buf, sect, BS_FilSysType, 2) && LD_WORD(buf) == 0x4146) /* Check FAT12/16 */ |
return 0; |
if (_FS_FAT32 && !disk_readp(buf, sect, BS_FilSysType32, 2) && LD_WORD(buf) == 0x4146) /* Check FAT32 */ |
return 0; |
return 1; |
} |
|
|
|
|
/*-------------------------------------------------------------------------- |
|
Public Functions |
|
--------------------------------------------------------------------------*/ |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Mount/Unmount a Locical Drive */ |
/*-----------------------------------------------------------------------*/ |
|
FRESULT pf_mount ( |
FATFS *fs /* Pointer to new file system object (NULL: Unmount) */ |
) |
{ |
BYTE fmt, buf[36]; |
DWORD bsect, fsize, tsect, mclst; |
|
|
FatFs = 0; |
if (!fs) return FR_OK; /* Unregister fs object */ |
|
if (disk_initialize() & STA_NOINIT) /* Check if the drive is ready or not */ |
return FR_NOT_READY; |
|
/* Search FAT partition on the drive */ |
bsect = 0; |
fmt = check_fs(buf, bsect); /* Check sector 0 as an SFD format */ |
if (fmt == 1) { /* Not an FAT boot record, it may be FDISK format */ |
/* Check a partition listed in top of the partition table */ |
if (disk_readp(buf, bsect, MBR_Table, 16)) { /* 1st partition entry */ |
fmt = 3; |
} else { |
if (buf[4]) { /* Is the partition existing? */ |
bsect = LD_DWORD(&buf[8]); /* Partition offset in LBA */ |
fmt = check_fs(buf, bsect); /* Check the partition */ |
} |
} |
} |
if (fmt == 3) return FR_DISK_ERR; |
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 = LD_WORD(buf+BPB_FATSz16-13); /* Number of sectors per FAT */ |
if (!fsize) fsize = LD_DWORD(buf+BPB_FATSz32-13); |
|
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); /* 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->n_fatent = (CLUST)mclst; |
|
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; |
#else |
return FR_NO_FILESYSTEM; |
#endif |
|
fs->fs_type = fmt; /* FAT sub-type */ |
if (_FS_FAT32 && fmt == FS_FAT32) |
fs->dirbase = LD_DWORD(buf+(BPB_RootClus-13)); /* Root directory start cluster */ |
else |
fs->dirbase = fs->fatbase + fsize; /* Root directory start sector (lba) */ |
fs->database = fs->fatbase + fsize + fs->n_rootdir / 16; /* Data start sector (lba) */ |
|
fs->flag = 0; |
FatFs = fs; |
|
return FR_OK; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Open or Create a File */ |
/*-----------------------------------------------------------------------*/ |
|
FRESULT pf_open ( |
const char *path /* Pointer to the file name */ |
) |
{ |
FRESULT res; |
DIR dj; |
BYTE sp[12], dir[32]; |
FATFS *fs = FatFs; |
|
|
if (!fs) /* Check file system */ |
return FR_NOT_ENABLED; |
|
fs->flag = 0; |
dj.fn = sp; |
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 = LD_CLUST(dir); /* File start cluster */ |
fs->fsize = LD_DWORD(dir+DIR_FileSize); /* File size */ |
fs->fptr = 0; /* File pointer */ |
fs->flag = FA_OPENED; |
|
return FR_OK; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Read File */ |
/*-----------------------------------------------------------------------*/ |
#if _USE_READ |
|
FRESULT pf_read ( |
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 */ |
) |
{ |
DRESULT dr; |
CLUST clst; |
DWORD sect, remain; |
WORD rcnt; |
BYTE cs, *rbuff = buff; |
FATFS *fs = FatFs; |
|
|
*br = 0; |
if (!fs) return FR_NOT_ENABLED; /* Check file system */ |
if (!(fs->flag & FA_OPENED)) /* Check if opened */ |
return FR_NOT_OPENED; |
|
remain = fs->fsize - fs->fptr; |
if (btr > remain) btr = (WORD)remain; /* Truncate btr by remaining bytes */ |
|
while (btr) { /* Repeat until all data transferred */ |
if ((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 fr_abort; |
fs->curr_clust = clst; /* Update current cluster */ |
} |
sect = clust2sect(fs->curr_clust); /* Get current sector */ |
if (!sect) goto fr_abort; |
fs->dsect = sect + cs; |
} |
rcnt = (WORD)(512 - (fs->fptr % 512)); /* Get partial sector data from sector buffer */ |
if (rcnt > btr) rcnt = btr; |
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; |
} |
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 |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Seek File R/W Pointer */ |
/*-----------------------------------------------------------------------*/ |
#if _USE_LSEEK |
|
FRESULT pf_lseek ( |
DWORD ofs /* File pointer from top of file */ |
) |
{ |
CLUST clst; |
DWORD bcs, sect, ifptr; |
FATFS *fs = FatFs; |
|
|
if (!fs) return FR_NOT_ENABLED; /* Check file system */ |
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->fptr = 0; |
if (ofs > 0) { |
bcs = (DWORD)fs->csize * 512; /* Cluster size (byte) */ |
if (ifptr > 0 && |
(ofs - 1) / bcs >= (ifptr - 1) / bcs) { /* When seek to same or following cluster, */ |
fs->fptr = (ifptr - 1) & ~(bcs - 1); /* start from the current cluster */ |
ofs -= fs->fptr; |
clst = fs->curr_clust; |
} else { /* When seek to back cluster, */ |
clst = fs->org_clust; /* start from the first cluster */ |
fs->curr_clust = clst; |
} |
while (ofs > bcs) { /* Cluster following loop */ |
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; |
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 |
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Create a Directroy Object */ |
/*-----------------------------------------------------------------------*/ |
#if _USE_DIR |
|
FRESULT pf_opendir ( |
DIR *dj, /* Pointer to directory object to create */ |
const char *path /* Pointer to the directory path */ |
) |
{ |
FRESULT res; |
BYTE sp[12], dir[32]; |
FATFS *fs = FatFs; |
|
|
if (!fs) { /* Check file system */ |
res = FR_NOT_ENABLED; |
} else { |
dj->fn = sp; |
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 = LD_CLUST(dir); |
else /* The object is not a directory */ |
res = FR_NO_PATH; |
} |
if (res == FR_OK) |
res = dir_rewind(dj); /* Rewind dir */ |
} |
if (res == FR_NO_FILE) res = FR_NO_PATH; |
} |
|
return res; |
} |
|
|
|
|
/*-----------------------------------------------------------------------*/ |
/* Read Directory Entry in Sequense */ |
/*-----------------------------------------------------------------------*/ |
|
FRESULT pf_readdir ( |
DIR *dj, /* Pointer to the open directory object */ |
FILINFO *fno /* Pointer to file information to return */ |
) |
{ |
FRESULT res; |
BYTE sp[12], dir[32]; |
FATFS *fs = FatFs; |
|
|
if (!fs) { /* Check file system */ |
res = FR_NOT_ENABLED; |
} else { |
dj->fn = sp; |
if (!fno) { |
res = dir_rewind(dj); |
} else { |
res = dir_read(dj, dir); |
if (res == FR_NO_FILE) { |
dj->sect = 0; |
res = FR_OK; |
} |
if (res == FR_OK) { /* A valid entry is found */ |
get_fileinfo(dj, dir, fno); /* Get the object information */ |
res = dir_next(dj); /* Increment index for next */ |
if (res == FR_NO_FILE) { |
dj->sect = 0; |
res = FR_OK; |
} |
} |
} |
} |
|
return res; |
} |
|
#endif /* _USE_DIR */ |
|