diff options
Diffstat (limited to '3rdparty/petitfs-0.03/src/pff.c')
| -rw-r--r-- | 3rdparty/petitfs-0.03/src/pff.c | 1108 |
1 files changed, 1108 insertions, 0 deletions
diff --git a/3rdparty/petitfs-0.03/src/pff.c b/3rdparty/petitfs-0.03/src/pff.c new file mode 100644 index 00000000..674a9175 --- /dev/null +++ b/3rdparty/petitfs-0.03/src/pff.c @@ -0,0 +1,1108 @@ +/*----------------------------------------------------------------------------/ +/ Petit FatFs - FAT file system module R0.03 (C)ChaN, 2014 +/-----------------------------------------------------------------------------/ +/ Petit FatFs module is a generic FAT file system module for small embedded +/ systems. This is a free software that opened for education, research and +/ commercial developments under license policy of following trems. +/ +/ Copyright (C) 2014, 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 products UNDER YOUR RESPONSIBILITY. +/ * Redistributions of source code must retain the above copyright notice. +/ +/-----------------------------------------------------------------------------/ +/ Jun 15,'09 R0.01a First release. +/ +/ 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. + +/ Jun 10,'14 R0.03 Separated out configuration options to pffconf.h. +/ Added _USE_LCC option. +/ Added _FS_FAT16 option. +/----------------------------------------------------------------------------*/ + +#include "pff.h" /* Petit FatFs configurations and declarations */ +#include "diskio.h" /* Declarations of low level disk I/O functions */ + + + +/*-------------------------------------------------------------------------- + + Module Private Definitions + +---------------------------------------------------------------------------*/ + + +#if _PFATFS != 4004 /* Revision ID */ +#error Wrong include file (pff.h). +#endif + +#if _FS_FAT32 +#if !_FS_FAT16 && !_FS_FAT12 +#define _FS_32ONLY 1 +#else +#define _FS_32ONLY 0 +#endif +#else +#if !_FS_FAT16 && !_FS_FAT12 +#error Wrong _FS_FATxx setting. +#endif +#define _FS_32ONLY 0 +#endif + +#define ABORT(err) {fs->flag = 0; return err;} + + + +/*--------------------------------------------------------*/ +/* DBCS code ranges and SBCS extend char conversion table */ +/*--------------------------------------------------------*/ + +#if _CODE_PAGE == 932 /* Japanese Shift-JIS */ +#define _DF1S 0x81 /* DBC 1st byte range 1 start */ +#define _DF1E 0x9F /* DBC 1st byte range 1 end */ +#define _DF2S 0xE0 /* DBC 1st byte range 2 start */ +#define _DF2E 0xFC /* DBC 1st byte range 2 end */ +#define _DS1S 0x40 /* DBC 2nd byte range 1 start */ +#define _DS1E 0x7E /* DBC 2nd byte range 1 end */ +#define _DS2S 0x80 /* DBC 2nd byte range 2 start */ +#define _DS2E 0xFC /* DBC 2nd byte range 2 end */ + +#elif _CODE_PAGE == 936 /* Simplified Chinese GBK */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0x80 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 949 /* Korean */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x41 +#define _DS1E 0x5A +#define _DS2S 0x61 +#define _DS2E 0x7A +#define _DS3S 0x81 +#define _DS3E 0xFE + +#elif _CODE_PAGE == 950 /* Traditional Chinese Big5 */ +#define _DF1S 0x81 +#define _DF1E 0xFE +#define _DS1S 0x40 +#define _DS1E 0x7E +#define _DS2S 0xA1 +#define _DS2E 0xFE + +#elif _CODE_PAGE == 437 /* U.S. (OEM) */ +#define _EXCVT {0x80,0x9A,0x90,0x41,0x8E,0x41,0x8F,0x80,0x45,0x45,0x45,0x49,0x49,0x49,0x8E,0x8F,0x90,0x92,0x92,0x4F,0x99,0x4F,0x55,0x55,0x59,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 720 /* Arabic (OEM) */ +#define _EXCVT {0x80,0x81,0x45,0x41,0x84,0x41,0x86,0x43,0x45,0x45,0x45,0x49,0x49,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x49,0x49,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 737 /* Greek (OEM) */ +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x92,0x92,0x93,0x94,0x95,0x96,0x97,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, \ + 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0xAA,0x92,0x93,0x94,0x95,0x96,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x97,0xEA,0xEB,0xEC,0xE4,0xED,0xEE,0xE7,0xE8,0xF1,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 775 /* Baltic (OEM) */ +#define _EXCVT {0x80,0x9A,0x91,0xA0,0x8E,0x95,0x8F,0x80,0xAD,0xED,0x8A,0x8A,0xA1,0x8D,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0x95,0x96,0x97,0x97,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xE0,0xA3,0xA3,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xB5,0xB6,0xB7,0xB8,0xBD,0xBE,0xC6,0xC7,0xA5,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE3,0xE8,0xE8,0xEA,0xEA,0xEE,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 850 /* Multilingual Latin 1 (OEM) */ +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 852 /* Latin 2 (OEM) */ +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xDE,0x8F,0x80,0x9D,0xD3,0x8A,0x8A,0xD7,0x8D,0x8E,0x8F,0x90,0x91,0x91,0xE2,0x99,0x95,0x95,0x97,0x97,0x99,0x9A,0x9B,0x9B,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA4,0xA4,0xA6,0xA6,0xA8,0xA8,0xAA,0x8D,0xAC,0xB8,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBD,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC6,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD2,0xD5,0xD6,0xD7,0xB7,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE3,0xD5,0xE6,0xE6,0xE8,0xE9,0xE8,0xEB,0xED,0xED,0xDD,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xEB,0xFC,0xFC,0xFE,0xFF} + +#elif _CODE_PAGE == 855 /* Cyrillic (OEM) */ +#define _EXCVT {0x81,0x81,0x83,0x83,0x85,0x85,0x87,0x87,0x89,0x89,0x8B,0x8B,0x8D,0x8D,0x8F,0x8F,0x91,0x91,0x93,0x93,0x95,0x95,0x97,0x97,0x99,0x99,0x9B,0x9B,0x9D,0x9D,0x9F,0x9F, \ + 0xA1,0xA1,0xA3,0xA3,0xA5,0xA5,0xA7,0xA7,0xA9,0xA9,0xAB,0xAB,0xAD,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB6,0xB6,0xB8,0xB8,0xB9,0xBA,0xBB,0xBC,0xBE,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD3,0xD3,0xD5,0xD5,0xD7,0xD7,0xDD,0xD9,0xDA,0xDB,0xDC,0xDD,0xE0,0xDF, \ + 0xE0,0xE2,0xE2,0xE4,0xE4,0xE6,0xE6,0xE8,0xE8,0xEA,0xEA,0xEC,0xEC,0xEE,0xEE,0xEF,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF8,0xFA,0xFA,0xFC,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 857 /* Turkish (OEM) */ +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0x98,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x98,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9E, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xDE,0x59,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 858 /* Multilingual Latin 1 + Euro (OEM) */ +#define _EXCVT {0x80,0x9A,0x90,0xB6,0x8E,0xB7,0x8F,0x80,0xD2,0xD3,0xD4,0xD8,0xD7,0xDE,0x8E,0x8F,0x90,0x92,0x92,0xE2,0x99,0xE3,0xEA,0xEB,0x59,0x99,0x9A,0x9D,0x9C,0x9D,0x9E,0x9F, \ + 0xB5,0xD6,0xE0,0xE9,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC7,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD1,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE5,0xE5,0xE6,0xE7,0xE7,0xE9,0xEA,0xEB,0xED,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 862 /* Hebrew (OEM) */ +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x41,0x49,0x4F,0x55,0xA5,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0x21,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 866 /* Russian (OEM) */ +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0x90,0x91,0x92,0x93,0x9d,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,0xF0,0xF0,0xF2,0xF2,0xF4,0xF4,0xF6,0xF6,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 874 /* Thai (OEM, Windows) */ +#define _EXCVT {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F, \ + 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF, \ + 0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF, \ + 0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF} + +#elif _CODE_PAGE == 1250 /* Central Europe (Windows) */ +#define _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 _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 _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 _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 _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 _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 _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 _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 _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} + +#else +#error Unknown code page. + +#endif + + + +/* Character code support macros */ + +#define IsUpper(c) (((c)>='A')&&((c)<='Z')) +#define IsLower(c) (((c)>='a')&&((c)<='z')) + +#ifndef _EXCVT /* 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 /* _EXCVT */ + + +/* 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 */ +) +{ + 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 : { + UINT wc, bc, ofs; + + bc = (UINT)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 +#if _FS_FAT16 + case FS_FAT16 : + if (disk_readp(buf, fs->fatbase + clst / 256, ((UINT)clst % 256) * 2, 2)) break; + return LD_WORD(buf); +#endif +#if _FS_FAT32 + case FS_FAT32 : + if (disk_readp(buf, fs->fatbase + clst / 128, ((UINT)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# / Get cluster field from directory entry */ +/*-----------------------------------------------------------------------*/ + +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; +} + + +static +CLUST get_clust ( + BYTE* dir /* Pointer to directory entry */ +) +{ + FATFS *fs = FatFs; + CLUST clst = 0; + + + if (_FS_32ONLY || (_FS_FAT32 && fs->fs_type == FS_FAT32)) { + clst = LD_WORD(dir+DIR_FstClusHI); + clst <<= 16; + } + clst |= LD_WORD(dir+DIR_FstClusLO); + + return clst; +} + + +/*-----------------------------------------------------------------------*/ +/* 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_32ONLY || 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 = (_FS_32ONLY || 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, (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, (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 */ +/*-----------------------------------------------------------------------*/ + + +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, ni, si, i, *sfn; + const char *p; +#if _USE_LCC +#ifdef _EXCVT + static const BYTE cvt[] = _EXCVT; +#endif +#endif + + /* 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; + } +#if _USE_LCC +#ifdef _EXCVT + if (c >= 0x80) /* To upper extended char (SBCS) */ + c = cvt[c - 0x80]; +#endif + if (IsDBCS1(c) && i < ni - 1) { /* DBC 1st byte? */ + BYTE d = p[si++]; /* Get 2nd byte */ + sfn[i++] = c; + sfn[i++] = d; + } else +#endif + { /* Single byte code */ + if (_USE_LCC && 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++; /* Strip leading spaces */ + if (*path == '/') path++; /* Strip heading separator if exist */ + 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) break; /* Could not find the object */ + if (dj->fn[11]) break; /* Last segment match. Function completed. */ + if (!(dir[DIR_Attr] & AM_DIR)) { /* Cannot follow path because it is a file */ + res = FR_NO_FILE; break; + } + dj->sclust = get_clust(dir); /* Follow next */ + } + } + + 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 record */ + return 3; + if (LD_WORD(buf) != 0xAA55) /* Check record signature */ + return 2; + + if (!_FS_32ONLY && !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 */ +) +{ + BYTE fmt, buf[36]; + DWORD bsect, fsize, tsect, mclst; + + + FatFs = 0; + + 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 = 0; /* Determine the FAT sub type */ + if (_FS_FAT12 && mclst < 0xFF7) + fmt = FS_FAT12; + if (_FS_FAT16 && mclst >= 0xFF8 && mclst < 0xFFF7) + fmt = FS_FAT16; + if (_FS_FAT32 && mclst >= 0xFFF7) + fmt = FS_FAT32; + if (!fmt) return FR_NO_FILESYSTEM; + fs->fs_type = fmt; + + if (_FS_32ONLY || (_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) return FR_NOT_ENABLED; /* Check file system */ + + 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 = get_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)*/ + UINT btr, /* Number of bytes to read */ + UINT* br /* Pointer to number of bytes read */ +) +{ + DRESULT dr; + CLUST clst; + DWORD sect, remain; + UINT 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 = (UINT)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? */ + if (fs->fptr == 0) /* On the top of the file? */ + clst = fs->org_clust; + else + clst = get_fat(fs->curr_clust); + if (clst <= 1) ABORT(FR_DISK_ERR); + fs->curr_clust = clst; /* Update current cluster */ + } + sect = clust2sect(fs->curr_clust); /* Get current sector */ + if (!sect) ABORT(FR_DISK_ERR); + fs->dsect = sect + cs; + } + rcnt = 512 - (UINT)fs->fptr % 512; /* Get partial sector data from sector buffer */ + if (rcnt > btr) rcnt = btr; + dr = disk_readp(!buff ? 0 : rbuff, fs->dsect, (UINT)fs->fptr % 512, rcnt); + if (dr) ABORT(FR_DISK_ERR); + fs->fptr += rcnt; rbuff += rcnt; /* Update pointers and counters */ + btr -= rcnt; *br += rcnt; + } + + return FR_OK; +} +#endif + + + +/*-----------------------------------------------------------------------*/ +/* Write File */ +/*-----------------------------------------------------------------------*/ +#if _USE_WRITE + +FRESULT pf_write ( + const void* buff, /* Pointer to the data to be written */ + UINT btw, /* Number of bytes to write (0:Finalize the current write operation) */ + UINT* bw /* Pointer to number of bytes written */ +) +{ + CLUST clst; + DWORD sect, remain; + const BYTE *p = buff; + BYTE cs; + UINT 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)) ABORT(FR_DISK_ERR); + 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 = (UINT)remain; /* Truncate btw by remaining bytes */ + + while (btw) { /* Repeat until all data transferred */ + if ((UINT)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? */ + if (fs->fptr == 0) /* On the top of the file? */ + clst = fs->org_clust; + else + clst = get_fat(fs->curr_clust); + if (clst <= 1) ABORT(FR_DISK_ERR); + fs->curr_clust = clst; /* Update current cluster */ + } + sect = clust2sect(fs->curr_clust); /* Get current sector */ + if (!sect) ABORT(FR_DISK_ERR); + fs->dsect = sect + cs; + if (disk_writep(0, fs->dsect)) ABORT(FR_DISK_ERR); /* Initiate a sector write operation */ + fs->flag |= FA__WIP; + } + wcnt = 512 - (UINT)fs->fptr % 512; /* Number of bytes to write to the sector */ + if (wcnt > btw) wcnt = btw; + if (disk_writep(p, wcnt)) ABORT(FR_DISK_ERR); /* Send data to the sector */ + fs->fptr += wcnt; p += wcnt; /* Update pointers and counters */ + btw -= wcnt; *bw += wcnt; + if ((UINT)fs->fptr % 512 == 0) { + if (disk_writep(0, 0)) ABORT(FR_DISK_ERR); /* Finalize the currtent secter write operation */ + fs->flag &= ~FA__WIP; + } + } + + return FR_OK; +} +#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) ABORT(FR_DISK_ERR); + fs->curr_clust = clst; + fs->fptr += bcs; + ofs -= bcs; + } + fs->fptr += ofs; + sect = clust2sect(clst); /* Current sector */ + if (!sect) ABORT(FR_DISK_ERR); + fs->dsect = sect + (fs->fptr / 512 & (fs->csize - 1)); + } + + return FR_OK; +} +#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 = get_clust(dir); + else /* The object is not a directory */ + res = FR_NO_FILE; + } + if (res == FR_OK) + res = dir_rewind(dj); /* Rewind dir */ + } + } + + 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); /* Get current directory item */ + if (res == FR_NO_FILE) res = FR_OK; + if (res == FR_OK) { /* A valid entry is found */ + get_fileinfo(dj, dir, fno); /* Get the object information */ + res = dir_next(dj); /* Increment read index for next */ + if (res == FR_NO_FILE) res = FR_OK; + } + } + } + + return res; +} + +#endif /* _USE_DIR */ + |