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297 | killagreg | 1 | #ifndef _FAT16_H |
2 | #define _FAT16_H |
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231 | killagreg | 3 | |
4 | |||
5 | //________________________________________________________________________________________________________________________________________ |
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6 | // |
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297 | killagreg | 7 | // Definitions |
231 | killagreg | 8 | // |
9 | //________________________________________________________________________________________________________________________________________ |
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10 | |||
297 | killagreg | 11 | //#define __USE_TIME_DATE_ATTRIBUTE |
12 | #define FILE_MAX_OPEN 3 // The number of files that can accessed simultaneously. |
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13 | #define SEEK_SET 0 |
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14 | #define SEEK_CUR 1 |
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15 | #define SEEK_END 2 |
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16 | #define EOF (-1) |
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17 | #define BYTES_PER_SECTOR 512 |
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18 | /* |
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19 | ________________________________________________________________________________________________________________________________________ |
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231 | killagreg | 20 | |
297 | killagreg | 21 | Structure of a filepointer |
22 | ________________________________________________________________________________________________________________________________________ |
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23 | */ |
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24 | typedef struct |
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231 | killagreg | 25 | { |
297 | killagreg | 26 | uint32_t FirstSectorOfFirstCluster; // First sector of the first cluster of the file. |
27 | uint32_t FirstSectorOfCurrCluster; // First sector of the cluster which is edited at the moment. |
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28 | uint8_t SectorOfCurrCluster; // The sector within the current cluster. |
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29 | uint16_t ByteOfCurrSector; // The byte location within the current sector. |
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30 | uint8_t Mode; // Mode of fileoperation (read,write) |
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31 | uint32_t Size; // The size of the opend file in bytes. |
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32 | uint32_t Position; // Pointer to a character within the file 0 < fileposition < filesize |
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33 | uint32_t DirectorySector; // the sectorposition where the directoryentry has been made. |
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34 | uint16_t DirectoryIndex; // The index to the directoryentry within the specified sector. |
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35 | uint8_t Attribute; // The attribute of the file opened. |
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36 | uint8_t Cache[BYTES_PER_SECTOR]; // Cache for read and write operation from or to the sd-card. |
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37 | uint32_t SectorInCache; // The last sector read, which is still in the sector cache. |
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38 | uint8_t State; // State of the filepointer (used/unused/...) |
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39 | } File_t; |
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231 | killagreg | 40 | |
41 | //________________________________________________________________________________________________________________________________________ |
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42 | // |
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43 | // API to the FAT16 filesystem |
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44 | // |
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45 | //________________________________________________________________________________________________________________________________________ |
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46 | |||
297 | killagreg | 47 | extern uint8_t Fat16_Init(void); |
48 | extern uint8_t Fat16_Deinit(void); |
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231 | killagreg | 49 | |
317 | killagreg | 50 | extern File_t * fopen_(int8_t * const filename, const int8_t mode); |
297 | killagreg | 51 | extern int16_t fclose_(File_t *file); |
317 | killagreg | 52 | extern uint8_t fexist_(int8_t * const filename); |
53 | extern int16_t fflush_(File_t * const file); |
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54 | extern int16_t fseek_(File_t * const file, int32_t offset, int16_t origin); |
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55 | extern int16_t fgetc_(File_t * const file); |
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56 | extern int16_t fputc_(const int8_t c, File_t * const file); |
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57 | extern uint32_t fread_(void * const buffer, uint32_t size, uint32_t count, File_t * const file); |
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297 | killagreg | 58 | extern uint32_t fwrite_(void *buffer, uint32_t size, uint32_t count, File_t *file); |
317 | killagreg | 59 | extern int16_t fputs_(int8_t * const string, File_t * const file); |
60 | extern int8_t * fgets_(int8_t * const string, const int16_t length, File_t * const file); |
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61 | extern uint8_t feof_(File_t * const file); |
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231 | killagreg | 62 | |
63 | |||
64 | |||
297 | killagreg | 65 | #endif //_FAT16_H |
231 | killagreg | 66 | |
67 | |||
68 | |||
69 |