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1 | #ifndef _FAT16_H |
1 | #ifndef _FAT16_H |
2 | #define _FAT16_H |
2 | #define _FAT16_H |
3 | 3 | ||
4 | 4 | ||
5 | //________________________________________________________________________________________________________________________________________ |
5 | //________________________________________________________________________________________________________________________________________ |
6 | // |
6 | // |
7 | // Definitions |
7 | // Definitions |
8 | // |
8 | // |
9 | //________________________________________________________________________________________________________________________________________ |
9 | //________________________________________________________________________________________________________________________________________ |
10 | 10 | ||
11 | //#define __USE_TIME_DATE_ATTRIBUTE |
11 | //#define __USE_TIME_DATE_ATTRIBUTE |
12 | #define FILE_MAX_OPEN 4 // The number of files that can accessed simultaneously. |
12 | #define FILE_MAX_OPEN 4 // The number of files that can accessed simultaneously. |
13 | #define SEEK_SET 0 |
13 | #define SEEK_SET 0 |
14 | #define SEEK_CUR 1 |
14 | #define SEEK_CUR 1 |
15 | #define SEEK_END 2 |
15 | #define SEEK_END 2 |
16 | #define EOF (-1) |
16 | #define EOF (-1) |
17 | #define BYTES_PER_SECTOR 512 |
17 | #define BYTES_PER_SECTOR 512 |
18 | /* |
18 | /* |
19 | ________________________________________________________________________________________________________________________________________ |
19 | ________________________________________________________________________________________________________________________________________ |
20 | |
20 | |
21 | Structure of a filepointer |
21 | Structure of a filepointer |
22 | ________________________________________________________________________________________________________________________________________ |
22 | ________________________________________________________________________________________________________________________________________ |
23 | */ |
23 | */ |
24 | typedef struct |
24 | typedef struct |
25 | { |
25 | { |
26 | u32 FirstSectorOfFirstCluster; // First sector of the first cluster of the file. |
26 | u32 FirstSectorOfFirstCluster; // First sector of the first cluster of the file. |
27 | u32 FirstSectorOfCurrCluster; // First sector of the cluster which is edited at the moment. |
27 | u32 FirstSectorOfCurrCluster; // First sector of the cluster which is edited at the moment. |
28 | u8 SectorOfCurrCluster; // The sector within the current cluster. |
28 | u8 SectorOfCurrCluster; // The sector within the current cluster. |
29 | u16 ByteOfCurrSector; // The byte location within the current sector. |
29 | u16 ByteOfCurrSector; // The byte location within the current sector. |
30 | u8 Mode; // Mode of fileoperation (read,write) |
30 | u8 Mode; // Mode of fileoperation (read,write) |
31 | u32 Size; // The size of the opend file in bytes. |
31 | u32 Size; // The size of the opend file in bytes. |
32 | u32 Position; // Pointer to a character within the file 0 < fileposition < filesize |
32 | u32 Position; // Pointer to a character within the file 0 < fileposition < filesize |
33 | u32 DirectorySector; // the sectorposition where the directoryentry has been made. |
33 | u32 DirectorySector; // the sectorposition where the directoryentry has been made. |
34 | u16 DirectoryIndex; // The index to the directoryentry within the specified sector. |
34 | u16 DirectoryIndex; // The index to the directoryentry within the specified sector. |
35 | u8 Attribute; // The attribute of the file opened. |
35 | u8 Attribute; // The attribute of the file opened. |
36 | u8 Cache[BYTES_PER_SECTOR]; // Cache for read and write operation from or to the sd-card. |
36 | u8 Cache[BYTES_PER_SECTOR]; // Cache for read and write operation from or to the sd-card. |
37 | u32 SectorInCache; // The last sector read, which is still in the sector cache. |
37 | u32 SectorInCache; // The last sector read, which is still in the sector cache. |
38 | u8 State; // State of the filepointer (used/unused/...) |
38 | u8 State; // State of the filepointer (used/unused/...) |
39 | } File_t; |
39 | } File_t; |
40 | 40 | ||
41 | - | ||
42 | #define ATTR_NONE 0x00 // normal file |
- | |
43 | #define ATTR_READONLY 0x01 // file is readonly |
- | |
44 | #define ATTR_HIDDEN 0x02 // file is hidden |
- | |
45 | #define ATTR_SYSTEM 0x04 // file is a system file |
- | |
46 | #define ATTR_VOLUMELABEL 0x08 // entry is a volume label |
- | |
47 | #define ATTR_LONG_FILENAME 0x0F // this is a long filename entry |
- | |
48 | #define ATTR_SUBDIRECTORY 0x10 // entry is a directory name |
- | |
49 | #define ATTR_ARCHIVE 0x20 // file is new or modified |
- | |
50 | #define ATTR_ANY_FILE 0x3F // all files |
- | |
51 | - | ||
52 | - | ||
53 | - | ||
54 | //________________________________________________________________________________________________________________________________________ |
- | |
55 | // |
- | |
56 | // Structure of an item used by functions findfirst and findnext |
- | |
57 | //________________________________________________________________________________________________________________________________________ |
- | |
58 | - | ||
59 | typedef struct |
- | |
60 | { |
- | |
61 | File_t fp; // filepointer used to get access to the filesystemstructure |
- | |
62 | s8 searchstring[11]; // findfirst and findnext will only return elements within the specified directory matching this searchstring. |
- | |
63 | s8 name[13]; // the name of the element found within the specified directory |
- | |
64 | u8 active; // if the attribute active is set the name and the attributes of an element found within DirectoryEntryExist will be entered into the structure |
- | |
65 | u8 attribfilter; |
- | |
66 | u8 attribmask; |
- | |
67 | } __attribute__((packed)) Find_t; |
- | |
68 | 41 | ||
69 | //________________________________________________________________________________________________________________________________________ |
42 | //________________________________________________________________________________________________________________________________________ |
70 | // |
43 | // |
71 | // API to the FAT16 filesystem |
44 | // API to the FAT16 filesystem |
72 | // |
45 | // |
73 | //________________________________________________________________________________________________________________________________________ |
46 | //________________________________________________________________________________________________________________________________________ |
74 | 47 | ||
75 | u8 Fat16_Init(void); |
48 | u8 Fat16_Init(void); |
76 | u8 Fat16_Deinit(void); |
49 | u8 Fat16_Deinit(void); |
77 | u8 Fat16_IsValid(void); |
50 | u8 Fat16_IsValid(void); |
78 | s8* FAT16_GetVolumeLabel(void); |
51 | s8* FAT16_GetVolumeLabel(void); |
79 | 52 | ||
80 | File_t *fopen_(s8 * const filename, const s8 mode); |
53 | File_t *fopen_(s8 * const filename, const s8 mode); |
81 | s16 fclose_(File_t *file); |
54 | s16 fclose_(File_t *file); |
82 | u8 fexist_(s8 * const filename); |
55 | u8 fexist_(s8 * const filename); |
83 | s16 fflush_(File_t * const file); |
56 | s16 fflush_(File_t * const file); |
84 | s16 fseek_(File_t * const file, s32 offset, s16 origin); |
57 | s16 fseek_(File_t * const file, s32 offset, s16 origin); |
85 | s16 fgetc_(File_t * const file); |
58 | s16 fgetc_(File_t * const file); |
86 | s16 fputc_(s8 c, File_t * const file); |
59 | s16 fputc_(s8 c, File_t * const file); |
87 | u32 fread_(void *buffer, u32 size, u32 count, File_t * const file); |
60 | u32 fread_(void *buffer, u32 size, u32 count, File_t * const file); |
88 | u32 fwrite_(void *buffer, u32 size, u32 count, File_t * const file); |
61 | u32 fwrite_(void *buffer, u32 size, u32 count, File_t * const file); |
89 | s16 fputs_(s8 * const string, File_t * const file); |
62 | s16 fputs_(s8 * const string, File_t * const file); |
90 | s8 * fgets_(s8 * const string, s16 length, File_t * const file); |
63 | s8 * fgets_(s8 * const string, s16 length, File_t * const file); |
91 | u8 feof_(File_t * const file); |
64 | u8 feof_(File_t * const file); |
92 | u8 findfirst_(const s8* name, u8 attribmask, Find_t *); |
- | |
93 | u8 findnext_(Find_t *); |
- | |
94 | u8 chdir_(s8 *folder); |
- | |
95 | s8 *GetPath(void); |
- | |
96 | - | ||
97 | 65 | ||
98 | 66 | ||
99 | 67 | ||
100 | #endif //_FAT16_H |
68 | #endif //_FAT16_H |
101 | 69 | ||
102 | 70 | ||
103 | 71 | ||
104 | 72 | ||
105 | 73 |