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1 /*---------------------------------------------------------------------------/ |
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2 / FatFs - FAT file system module include file R0.09 (C)ChaN, 2011 |
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3 /----------------------------------------------------------------------------/ |
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4 / FatFs module is a generic FAT file system module for small embedded systems. |
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5 / This is a free software that opened for education, research and commercial |
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6 / developments under license policy of following trems. |
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7 / |
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8 / Copyright (C) 2011, ChaN, all right reserved. |
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9 / |
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10 / * The FatFs module is a free software and there is NO WARRANTY. |
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11 / * No restriction on use. You can use, modify and redistribute it for |
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12 / personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY. |
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13 / * Redistributions of source code must retain the above copyright notice. |
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14 / |
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15 /----------------------------------------------------------------------------*/ |
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16 |
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17 #ifndef _FATFS |
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18 #define _FATFS 6502 /* Revision ID */ |
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19 |
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20 #ifdef __cplusplus |
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21 extern "C" { |
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22 #endif |
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23 |
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24 #include "integer.h" /* Basic integer types */ |
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25 #include "ffconf.h" /* FatFs configuration options */ |
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26 |
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27 #if _FATFS != _FFCONF |
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28 #error Wrong configuration file (ffconf.h). |
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29 #endif |
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30 |
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31 |
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32 |
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33 /* Definitions of volume management */ |
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34 |
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35 #if _MULTI_PARTITION /* Multiple partition configuration */ |
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36 typedef struct { |
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37 BYTE pd; /* Physical drive number */ |
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38 BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */ |
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39 } PARTITION; |
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40 extern PARTITION VolToPart[]; /* Volume - Partition resolution table */ |
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41 #define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */ |
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42 #define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */ |
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43 |
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44 #else /* Single partition configuration */ |
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45 #define LD2PD(vol) (vol) /* Each logical drive is bound to the same physical drive number */ |
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46 #define LD2PT(vol) 0 /* Always mounts the 1st partition or in SFD */ |
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47 |
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48 #endif |
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49 |
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50 |
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51 |
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52 /* Type of path name strings on FatFs API */ |
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53 |
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54 #if _LFN_UNICODE /* Unicode string */ |
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55 #if !_USE_LFN |
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56 #error _LFN_UNICODE must be 0 in non-LFN cfg. |
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57 #endif |
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58 #ifndef _INC_TCHAR |
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59 typedef WCHAR TCHAR; |
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60 #define _T(x) L ## x |
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61 #define _TEXT(x) L ## x |
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62 #endif |
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63 |
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64 #else /* ANSI/OEM string */ |
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65 #ifndef _INC_TCHAR |
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66 typedef char TCHAR; |
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67 #define _T(x) x |
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68 #define _TEXT(x) x |
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69 #endif |
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70 |
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71 #endif |
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72 |
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73 |
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74 |
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75 /* File system object structure (FATFS) */ |
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76 |
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77 typedef struct { |
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78 BYTE fs_type; /* FAT sub-type (0:Not mounted) */ |
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79 BYTE drv; /* Physical drive number */ |
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80 BYTE csize; /* Sectors per cluster (1,2,4...128) */ |
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81 BYTE n_fats; /* Number of FAT copies (1,2) */ |
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82 BYTE wflag; /* win[] dirty flag (1:must be written back) */ |
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83 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */ |
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84 WORD id; /* File system mount ID */ |
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85 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */ |
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86 #if _MAX_SS != 512 |
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87 WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */ |
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88 #endif |
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89 #if _FS_REENTRANT |
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90 _SYNC_t sobj; /* Identifier of sync object */ |
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91 #endif |
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92 #if !_FS_READONLY |
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93 DWORD last_clust; /* Last allocated cluster */ |
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94 DWORD free_clust; /* Number of free clusters */ |
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95 DWORD fsi_sector; /* fsinfo sector (FAT32) */ |
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96 #endif |
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97 #if _FS_RPATH |
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98 DWORD cdir; /* Current directory start cluster (0:root) */ |
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99 #endif |
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100 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */ |
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101 DWORD fsize; /* Sectors per FAT */ |
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102 DWORD fatbase; /* FAT start sector */ |
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103 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */ |
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104 DWORD database; /* Data start sector */ |
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105 DWORD winsect; /* Current sector appearing in the win[] */ |
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106 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */ |
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107 } FATFS; |
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108 |
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109 |
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110 |
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111 /* File object structure (FIL) */ |
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112 |
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113 typedef struct { |
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114 FATFS* fs; /* Pointer to the owner file system object */ |
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115 WORD id; /* Owner file system mount ID */ |
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116 BYTE flag; /* File status flags */ |
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117 BYTE pad1; |
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118 DWORD fptr; /* File read/write pointer (0 on file open) */ |
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119 DWORD fsize; /* File size */ |
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120 DWORD sclust; /* File start cluster (0 when fsize==0) */ |
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121 DWORD clust; /* Current cluster */ |
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122 DWORD dsect; /* Current data sector */ |
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123 #if !_FS_READONLY |
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124 DWORD dir_sect; /* Sector containing the directory entry */ |
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125 BYTE* dir_ptr; /* Ponter to the directory entry in the window */ |
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126 #endif |
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127 #if _USE_FASTSEEK |
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128 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */ |
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129 #endif |
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130 #if _FS_SHARE |
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131 UINT lockid; /* File lock ID (index of file semaphore table) */ |
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132 #endif |
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133 #if !_FS_TINY |
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134 BYTE buf[_MAX_SS]; /* File data read/write buffer */ |
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135 #endif |
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136 } FIL; |
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137 |
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138 |
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139 |
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140 /* Directory object structure (DIR) */ |
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141 |
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142 typedef struct { |
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143 FATFS* fs; /* Pointer to the owner file system object */ |
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144 WORD id; /* Owner file system mount ID */ |
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145 WORD index; /* Current read/write index number */ |
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146 DWORD sclust; /* Table start cluster (0:Root dir) */ |
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147 DWORD clust; /* Current cluster */ |
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148 DWORD sect; /* Current sector */ |
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149 BYTE* dir; /* Pointer to the current SFN entry in the win[] */ |
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150 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */ |
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151 #if _USE_LFN |
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152 WCHAR* lfn; /* Pointer to the LFN working buffer */ |
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153 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */ |
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154 #endif |
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155 } DIR; |
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156 |
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157 |
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158 |
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159 /* File status structure (FILINFO) */ |
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160 |
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161 typedef struct { |
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162 DWORD fsize; /* File size */ |
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163 WORD fdate; /* Last modified date */ |
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164 WORD ftime; /* Last modified time */ |
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165 BYTE fattrib; /* Attribute */ |
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166 TCHAR fname[13]; /* Short file name (8.3 format) */ |
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167 #if _USE_LFN |
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168 TCHAR* lfname; /* Pointer to the LFN buffer */ |
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169 UINT lfsize; /* Size of LFN buffer in TCHAR */ |
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170 #endif |
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171 } FILINFO; |
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172 |
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173 |
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174 |
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175 /* File function return code (FRESULT) */ |
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176 |
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177 typedef enum { |
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178 FR_OK = 0, /* (0) Succeeded */ |
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179 FR_DISK_ERR, /* (1) A hard error occured in the low level disk I/O layer */ |
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180 FR_INT_ERR, /* (2) Assertion failed */ |
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181 FR_NOT_READY, /* (3) The physical drive cannot work */ |
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182 FR_NO_FILE, /* (4) Could not find the file */ |
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183 FR_NO_PATH, /* (5) Could not find the path */ |
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184 FR_INVALID_NAME, /* (6) The path name format is invalid */ |
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185 FR_DENIED, /* (7) Acces denied due to prohibited access or directory full */ |
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186 FR_EXIST, /* (8) Acces denied due to prohibited access */ |
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187 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */ |
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188 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */ |
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189 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */ |
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190 FR_NOT_ENABLED, /* (12) The volume has no work area */ |
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191 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */ |
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192 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */ |
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193 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */ |
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194 FR_LOCKED, /* (16) The operation is rejected according to the file shareing policy */ |
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195 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */ |
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196 FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */ |
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197 FR_INVALID_PARAMETER /* (19) Given parameter is invalid */ |
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198 } FRESULT; |
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199 |
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200 |
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201 |
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202 /*--------------------------------------------------------------*/ |
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203 /* FatFs module application interface */ |
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204 |
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205 FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */ |
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206 FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */ |
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207 FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */ |
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208 FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */ |
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209 FRESULT f_close (FIL*); /* Close an open file object */ |
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210 FRESULT f_opendir (DIR*, const TCHAR*); /* Open an existing directory */ |
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211 FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */ |
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212 FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */ |
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213 FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */ |
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214 FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */ |
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215 FRESULT f_truncate (FIL*); /* Truncate file */ |
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216 FRESULT f_sync (FIL*); /* Flush cached data of a writing file */ |
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217 FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */ |
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218 FRESULT f_mkdir (const TCHAR*); /* Create a new directory */ |
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219 FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attriburte of the file/dir */ |
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220 FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change timestamp of the file/dir */ |
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221 FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */ |
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222 FRESULT f_chdrive (BYTE); /* Change current drive */ |
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223 FRESULT f_chdir (const TCHAR*); /* Change current directory */ |
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224 FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */ |
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225 FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */ |
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226 FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */ |
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227 FRESULT f_fdisk (BYTE, const DWORD[], void*); /* Divide a physical drive into some partitions */ |
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228 int f_putc (TCHAR, FIL*); /* Put a character to the file */ |
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229 int f_puts (const TCHAR*, FIL*); /* Put a string to the file */ |
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230 int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */ |
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231 TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */ |
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232 |
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233 #define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0) |
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234 #define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0) |
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235 #define f_tell(fp) ((fp)->fptr) |
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236 #define f_size(fp) ((fp)->fsize) |
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237 |
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238 #ifndef EOF |
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239 #define EOF (-1) |
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240 #endif |
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241 |
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242 |
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243 |
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244 |
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245 /*--------------------------------------------------------------*/ |
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246 /* Additional user defined functions */ |
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247 |
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248 /* RTC function */ |
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249 #if !_FS_READONLY |
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250 DWORD get_fattime (void); |
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251 #endif |
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252 |
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253 /* Unicode support functions */ |
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254 #if _USE_LFN /* Unicode - OEM code conversion */ |
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255 WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */ |
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256 WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */ |
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257 #if _USE_LFN == 3 /* Memory functions */ |
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258 void* ff_memalloc (UINT); /* Allocate memory block */ |
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259 void ff_memfree (void*); /* Free memory block */ |
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260 #endif |
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261 #endif |
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262 |
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263 /* Sync functions */ |
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264 #if _FS_REENTRANT |
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265 int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */ |
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266 int ff_req_grant (_SYNC_t); /* Lock sync object */ |
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267 void ff_rel_grant (_SYNC_t); /* Unlock sync object */ |
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268 int ff_del_syncobj (_SYNC_t); /* Delete a sync object */ |
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269 #endif |
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270 |
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271 |
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272 |
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273 |
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274 /*--------------------------------------------------------------*/ |
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275 /* Flags and offset address */ |
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276 |
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277 |
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278 /* File access control and file status flags (FIL.flag) */ |
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279 |
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280 #define FA_READ 0x01 |
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281 #define FA_OPEN_EXISTING 0x00 |
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282 #define FA__ERROR 0x80 |
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283 |
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284 #if !_FS_READONLY |
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285 #define FA_WRITE 0x02 |
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286 #define FA_CREATE_NEW 0x04 |
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287 #define FA_CREATE_ALWAYS 0x08 |
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288 #define FA_OPEN_ALWAYS 0x10 |
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289 #define FA__WRITTEN 0x20 |
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290 #define FA__DIRTY 0x40 |
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291 #endif |
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292 |
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293 |
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294 /* FAT sub type (FATFS.fs_type) */ |
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295 |
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296 #define FS_FAT12 1 |
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297 #define FS_FAT16 2 |
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298 #define FS_FAT32 3 |
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299 |
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300 |
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301 /* File attribute bits for directory entry */ |
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302 |
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303 #define AM_RDO 0x01 /* Read only */ |
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304 #define AM_HID 0x02 /* Hidden */ |
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305 #define AM_SYS 0x04 /* System */ |
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306 #define AM_VOL 0x08 /* Volume label */ |
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307 #define AM_LFN 0x0F /* LFN entry */ |
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308 #define AM_DIR 0x10 /* Directory */ |
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309 #define AM_ARC 0x20 /* Archive */ |
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310 #define AM_MASK 0x3F /* Mask of defined bits */ |
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311 |
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312 |
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313 /* Fast seek feature */ |
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314 #define CREATE_LINKMAP 0xFFFFFFFF |
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315 |
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316 |
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317 |
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318 /*--------------------------------*/ |
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319 /* Multi-byte word access macros */ |
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320 |
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321 #if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */ |
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322 #define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr)) |
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323 #define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr)) |
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324 #define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val) |
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325 #define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val) |
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326 #else /* Use byte-by-byte access to the FAT structure */ |
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327 #define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr)) |
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328 #define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr)) |
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329 #define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8) |
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330 #define ST_DWORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8); *((BYTE*)(ptr)+2)=(BYTE)((DWORD)(val)>>16); *((BYTE*)(ptr)+3)=(BYTE)((DWORD)(val)>>24) |
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331 #endif |
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332 |
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333 #ifdef __cplusplus |
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334 } |
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335 #endif |
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336 |
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337 #endif /* _FATFS */ |
