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1/*---------------------------------------------------------------------------/
2/ FatFs - FAT file system module include file R0.09a (C)ChaN, 2012
3/----------------------------------------------------------------------------/
4/ FatFs module is a generic FAT file system module for small embedded systems.
5/ This is a free software that opened for education, research and commercial
6/ developments under license policy of following terms.
7/
8/ Copyright (C) 2012, ChaN, all right reserved.
9/
10/ * The FatFs module is a free software and there is NO WARRANTY.
11/ * No restriction on use. You can use, modify and redistribute it for
12/ personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
13/ * Redistributions of source code must retain the above copyright notice.
14/
15/----------------------------------------------------------------------------*/
16
17#ifndef _FATFS
18#define _FATFS 4004 /* Revision ID */
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
24#include "integer.h" /* Basic integer types */
25#include "ffconf.h" /* FatFs configuration options */
26
27#if _FATFS != _FFCONF
28#error Wrong configuration file (ffconf.h).
29#endif
30
31
32
33/* Definitions of volume management */
34
35#if _MULTI_PARTITION /* Multiple partition configuration */
36typedef struct {
37 BYTE pd; /* Physical drive number */
38 BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
39} PARTITION;
40extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
41#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
42#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
43
44#else /* Single partition configuration */
45#define LD2PD(vol) (BYTE)(vol) /* Each logical drive is bound to the same physical drive number */
46#define LD2PT(vol) 0 /* Always mounts the 1st partition or in SFD */
47
48#endif
49
50
51
52/* Type of path name strings on FatFs API */
53
54#if _LFN_UNICODE /* Unicode string */
55#if !_USE_LFN
56#error _LFN_UNICODE must be 0 in non-LFN cfg.
57#endif
58#ifndef _INC_TCHAR
59typedef WCHAR TCHAR;
60#define _T(x) L ## x
61#define _TEXT(x) L ## x
62#endif
63
64#else /* ANSI/OEM string */
65#ifndef _INC_TCHAR
66typedef char TCHAR;
67#define _T(x) x
68#define _TEXT(x) x
69#endif
70
71#endif
72
73
74
75/* File system object structure (FATFS) */
76
77typedef struct {
78 BYTE fs_type; /* FAT sub-type (0:Not mounted) */
79 BYTE drv; /* Physical drive number */
80 BYTE csize; /* Sectors per cluster (1,2,4...128) */
81 BYTE n_fats; /* Number of FAT copies (1,2) */
82 BYTE wflag; /* win[] dirty flag (1:must be written back) */
83 BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
84 WORD id; /* File system mount ID */
85 WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
86#if _MAX_SS != 512
87 WORD ssize; /* Bytes per sector (512, 1024, 2048 or 4096) */
88#endif
89#if _FS_REENTRANT
90 _SYNC_t sobj; /* Identifier of sync object */
91#endif
92#if !_FS_READONLY
93 DWORD last_clust; /* Last allocated cluster */
94 DWORD free_clust; /* Number of free clusters */
95 DWORD fsi_sector; /* fsinfo sector (FAT32) */
96#endif
97#if _FS_RPATH
98 DWORD cdir; /* Current directory start cluster (0:root) */
99#endif
100 DWORD n_fatent; /* Number of FAT entries (= number of clusters + 2) */
101 DWORD fsize; /* Sectors per FAT */
102 DWORD fatbase; /* FAT start sector */
103 DWORD dirbase; /* Root directory start sector (FAT32:Cluster#) */
104 DWORD database; /* Data start sector */
105 DWORD winsect; /* Current sector appearing in the win[] */
106 BYTE win[_MAX_SS]; /* Disk access window for Directory, FAT (and Data on tiny cfg) */
107} FATFS;
108
109
110
111/* File object structure (FIL) */
112
113typedef struct {
114 FATFS* fs; /* Pointer to the related file system object */
115 WORD id; /* File system mount ID of the related file system object */
116 BYTE flag; /* File status flags */
117 BYTE pad1;
118 DWORD fptr; /* File read/write pointer (0ed on file open) */
119 DWORD fsize; /* File size */
120 DWORD sclust; /* File data start cluster (0:no data cluster, always 0 when fsize is 0) */
121 DWORD clust; /* Current cluster of fpter */
122 DWORD dsect; /* Current data sector of fpter */
123#if !_FS_READONLY
124 DWORD dir_sect; /* Sector containing the directory entry */
125 BYTE* dir_ptr; /* Pointer to the directory entry in the window */
126#endif
127#if _USE_FASTSEEK
128 DWORD* cltbl; /* Pointer to the cluster link map table (null on file open) */
129#endif
130#if _FS_LOCK
131 UINT lockid; /* File lock ID (index of file semaphore table Files[]) */
132#endif
133#if !_FS_TINY
134 BYTE buf[_MAX_SS]; /* File data read/write buffer */
135#endif
136} FIL;
137
138
139
140/* Directory object structure (DIR) */
141
142typedef struct {
143 FATFS* fs; /* Pointer to the owner file system object */
144 WORD id; /* Owner file system mount ID */
145 WORD index; /* Current read/write index number */
146 DWORD sclust; /* Table start cluster (0:Root dir) */
147 DWORD clust; /* Current cluster */
148 DWORD sect; /* Current sector */
149 BYTE* dir; /* Pointer to the current SFN entry in the win[] */
150 BYTE* fn; /* Pointer to the SFN (in/out) {file[8],ext[3],status[1]} */
151#if _USE_LFN
152 WCHAR* lfn; /* Pointer to the LFN working buffer */
153 WORD lfn_idx; /* Last matched LFN index number (0xFFFF:No LFN) */
154#endif
155} DIR;
156
157
158
159/* File status structure (FILINFO) */
160
161typedef struct {
162 DWORD fsize; /* File size */
163 WORD fdate; /* Last modified date */
164 WORD ftime; /* Last modified time */
165 BYTE fattrib; /* Attribute */
166 TCHAR fname[13]; /* Short file name (8.3 format) */
167#if _USE_LFN
168 TCHAR* lfname; /* Pointer to the LFN buffer */
169 UINT lfsize; /* Size of LFN buffer in TCHAR */
170#endif
171} FILINFO;
172
173
174
175/* File function return code (FRESULT) */
176
177typedef enum {
178 FR_OK = 0, /* (0) Succeeded */
179 FR_DISK_ERR, /* (1) A hard error occurred in the low level disk I/O layer */
180 FR_INT_ERR, /* (2) Assertion failed */
181 FR_NOT_READY, /* (3) The physical drive cannot work */
182 FR_NO_FILE, /* (4) Could not find the file */
183 FR_NO_PATH, /* (5) Could not find the path */
184 FR_INVALID_NAME, /* (6) The path name format is invalid */
185 FR_DENIED, /* (7) Access denied due to prohibited access or directory full */
186 FR_EXIST, /* (8) Access denied due to prohibited access */
187 FR_INVALID_OBJECT, /* (9) The file/directory object is invalid */
188 FR_WRITE_PROTECTED, /* (10) The physical drive is write protected */
189 FR_INVALID_DRIVE, /* (11) The logical drive number is invalid */
190 FR_NOT_ENABLED, /* (12) The volume has no work area */
191 FR_NO_FILESYSTEM, /* (13) There is no valid FAT volume */
192 FR_MKFS_ABORTED, /* (14) The f_mkfs() aborted due to any parameter error */
193 FR_TIMEOUT, /* (15) Could not get a grant to access the volume within defined period */
194 FR_LOCKED, /* (16) The operation is rejected according to the file sharing policy */
195 FR_NOT_ENOUGH_CORE, /* (17) LFN working buffer could not be allocated */
196 FR_TOO_MANY_OPEN_FILES, /* (18) Number of open files > _FS_SHARE */
197 FR_INVALID_PARAMETER /* (19) Given parameter is invalid */
198} FRESULT;
199
200
201
202/*--------------------------------------------------------------*/
203/* FatFs module application interface */
204
205FRESULT f_mount (BYTE, FATFS*); /* Mount/Unmount a logical drive */
206FRESULT f_open (FIL*, const TCHAR*, BYTE); /* Open or create a file */
207FRESULT f_read (FIL*, void*, UINT, UINT*); /* Read data from a file */
208FRESULT f_lseek (FIL*, DWORD); /* Move file pointer of a file object */
209FRESULT f_close (FIL*); /* Close an open file object */
210FRESULT f_opendir (DIR*, const TCHAR*); /* Open an existing directory */
211FRESULT f_readdir (DIR*, FILINFO*); /* Read a directory item */
212FRESULT f_stat (const TCHAR*, FILINFO*); /* Get file status */
213FRESULT f_write (FIL*, const void*, UINT, UINT*); /* Write data to a file */
214FRESULT f_getfree (const TCHAR*, DWORD*, FATFS**); /* Get number of free clusters on the drive */
215FRESULT f_truncate (FIL*); /* Truncate file */
216FRESULT f_sync (FIL*); /* Flush cached data of a writing file */
217FRESULT f_unlink (const TCHAR*); /* Delete an existing file or directory */
218FRESULT f_mkdir (const TCHAR*); /* Create a new directory */
219FRESULT f_chmod (const TCHAR*, BYTE, BYTE); /* Change attribute of the file/dir */
220FRESULT f_utime (const TCHAR*, const FILINFO*); /* Change times-tamp of the file/dir */
221FRESULT f_rename (const TCHAR*, const TCHAR*); /* Rename/Move a file or directory */
222FRESULT f_chdrive (BYTE); /* Change current drive */
223FRESULT f_chdir (const TCHAR*); /* Change current directory */
224FRESULT f_getcwd (TCHAR*, UINT); /* Get current directory */
225FRESULT f_forward (FIL*, UINT(*)(const BYTE*,UINT), UINT, UINT*); /* Forward data to the stream */
226FRESULT f_mkfs (BYTE, BYTE, UINT); /* Create a file system on the drive */
227FRESULT f_fdisk (BYTE, const DWORD[], void*); /* Divide a physical drive into some partitions */
228int f_putc (TCHAR, FIL*); /* Put a character to the file */
229int f_puts (const TCHAR*, FIL*); /* Put a string to the file */
230int f_printf (FIL*, const TCHAR*, ...); /* Put a formatted string to the file */
231TCHAR* f_gets (TCHAR*, int, FIL*); /* Get a string from the file */
232
233#define f_eof(fp) (((fp)->fptr == (fp)->fsize) ? 1 : 0)
234#define f_error(fp) (((fp)->flag & FA__ERROR) ? 1 : 0)
235#define f_tell(fp) ((fp)->fptr)
236#define f_size(fp) ((fp)->fsize)
237
238#ifndef EOF
239#define EOF (-1)
240#endif
241
242
243
244
245/*--------------------------------------------------------------*/
246/* Additional user defined functions */
247
248/* RTC function */
249#if !_FS_READONLY
250DWORD get_fattime (void);
251#endif
252
253/* Unicode support functions */
254#if _USE_LFN /* Unicode - OEM code conversion */
255WCHAR ff_convert (WCHAR, UINT); /* OEM-Unicode bidirectional conversion */
256WCHAR ff_wtoupper (WCHAR); /* Unicode upper-case conversion */
257#if _USE_LFN == 3 /* Memory functions */
258void* ff_memalloc (UINT); /* Allocate memory block */
259void ff_memfree (void*); /* Free memory block */
260#endif
261#endif
262
263/* Sync functions */
264#if _FS_REENTRANT
265int ff_cre_syncobj (BYTE, _SYNC_t*);/* Create a sync object */
266int ff_req_grant (_SYNC_t); /* Lock sync object */
267void ff_rel_grant (_SYNC_t); /* Unlock sync object */
268int ff_del_syncobj (_SYNC_t); /* Delete a sync object */
269#endif
270
271
272
273
274/*--------------------------------------------------------------*/
275/* Flags and offset address */
276
277
278/* File access control and file status flags (FIL.flag) */
279
280#define FA_READ 0x01
281#define FA_OPEN_EXISTING 0x00
282#define FA__ERROR 0x80
283
284#if !_FS_READONLY
285#define FA_WRITE 0x02
286#define FA_CREATE_NEW 0x04
287#define FA_CREATE_ALWAYS 0x08
288#define FA_OPEN_ALWAYS 0x10
289#define FA__WRITTEN 0x20
290#define FA__DIRTY 0x40
291#endif
292
293
294/* FAT sub type (FATFS.fs_type) */
295
296#define FS_FAT12 1
297#define FS_FAT16 2
298#define FS_FAT32 3
299
300
301/* File attribute bits for directory entry */
302
303#define AM_RDO 0x01 /* Read only */
304#define AM_HID 0x02 /* Hidden */
305#define AM_SYS 0x04 /* System */
306#define AM_VOL 0x08 /* Volume label */
307#define AM_LFN 0x0F /* LFN entry */
308#define AM_DIR 0x10 /* Directory */
309#define AM_ARC 0x20 /* Archive */
310#define AM_MASK 0x3F /* Mask of defined bits */
311
312
313/* Fast seek feature */
314#define CREATE_LINKMAP 0xFFFFFFFF
315
316
317
318/*--------------------------------*/
319/* Multi-byte word access macros */
320
321#if _WORD_ACCESS == 1 /* Enable word access to the FAT structure */
322#define LD_WORD(ptr) (WORD)(*(WORD*)(BYTE*)(ptr))
323#define LD_DWORD(ptr) (DWORD)(*(DWORD*)(BYTE*)(ptr))
324#define ST_WORD(ptr,val) *(WORD*)(BYTE*)(ptr)=(WORD)(val)
325#define ST_DWORD(ptr,val) *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
326#else /* Use byte-by-byte access to the FAT structure */
327#define LD_WORD(ptr) (WORD)(((WORD)*((BYTE*)(ptr)+1)<<8)|(WORD)*(BYTE*)(ptr))
328#define LD_DWORD(ptr) (DWORD)(((DWORD)*((BYTE*)(ptr)+3)<<24)|((DWORD)*((BYTE*)(ptr)+2)<<16)|((WORD)*((BYTE*)(ptr)+1)<<8)|*(BYTE*)(ptr))
329#define ST_WORD(ptr,val) *(BYTE*)(ptr)=(BYTE)(val); *((BYTE*)(ptr)+1)=(BYTE)((WORD)(val)>>8)
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)
331#endif
332
333#ifdef __cplusplus
334}
335#endif
336
337#endif /* _FATFS */
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-17 21:38:44 +0000