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| Rev | Author | Line No. | Line |
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| 426 | killagreg | 1 | #ifndef _FAT16_H |
| 2 | #define _FAT16_H |
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| 3 | |||
| 4 | |||
| 5 | //________________________________________________________________________________________________________________________________________ |
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| 6 | // |
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| 7 | // Definitions |
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| 8 | // |
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| 9 | //________________________________________________________________________________________________________________________________________ |
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| 10 | |||
| 11 | //#define __USE_TIME_DATE_ATTRIBUTE |
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| 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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| 20 | |||
| 21 | Structure of a filepointer |
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| 22 | ________________________________________________________________________________________________________________________________________ |
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| 23 | */ |
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| 24 | typedef struct |
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| 25 | { |
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| 26 | uint32_t FirstSectorOfFirstCluster; // First sector of the first cluster of the file. |
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| 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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| 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 | |||
| 47 | extern uint8_t Fat16_Init(void); |
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| 48 | extern uint8_t Fat16_Deinit(void); |
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| 49 | extern uint8_t Fat16_IsValid(void); |
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| 50 | |||
| 51 | extern File_t * fopen_(int8_t * const filename, const int8_t mode); |
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| 52 | extern int16_t fclose_(File_t *file); |
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| 53 | extern uint8_t fexist_(int8_t * const filename); |
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| 54 | extern int16_t fflush_(File_t * const file); |
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| 55 | extern int16_t fseek_(File_t * const file, int32_t offset, int16_t origin); |
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| 56 | extern int16_t fgetc_(File_t * const file); |
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| 57 | extern int16_t fputc_(const int8_t c, File_t * const file); |
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| 58 | extern uint32_t fread_(void * const buffer, uint32_t size, uint32_t count, File_t * const file); |
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| 59 | extern uint32_t fwrite_(void *buffer, uint32_t size, uint32_t count, File_t *file); |
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| 60 | extern int16_t fputs_(int8_t * const string, File_t * const file); |
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| 61 | extern int8_t * fgets_(int8_t * const string, const int16_t length, File_t * const file); |
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| 62 | extern uint8_t feof_(File_t * const file); |
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| 63 | |||
| 64 | |||
| 65 | |||
| 66 | #endif //_FAT16_H |
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| 67 | |||
| 68 | |||
| 69 | |||
| 70 |