Andrew Lindsay
Updated get_fattime to use rtc and provide a date/time. This has been an annoying missing feature.
Dependents: IoTGateway_Basic y_XBeeTest_5_read CameraC1098_picture LifeCam ... more
FATFileSystem.cpp@1:5baba5d5b728, 2012-04-02 (annotated)
- Committer:
- SomeRandomBloke
- Date:
- Mon Apr 02 22:06:35 2012 +0000
- Revision:
- 1:5baba5d5b728
- Parent:
- 0:93acdd9f65f4
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| SomeRandomBloke | 0:93acdd9f65f4 | 1 | /* mbed Microcontroller Library - FATFileSystem |
| SomeRandomBloke | 0:93acdd9f65f4 | 2 | * Copyright (c) 2008, sford |
| SomeRandomBloke | 0:93acdd9f65f4 | 3 | */ |
| SomeRandomBloke | 0:93acdd9f65f4 | 4 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 5 | #include "FATFileSystem.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 6 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 7 | #include "mbed.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 8 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 9 | #include "FileSystemLike.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 10 | #include "FATFileHandle.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 11 | #include "FATDirHandle.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 12 | #include "ff.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 13 | //#include "Debug.h" |
| SomeRandomBloke | 0:93acdd9f65f4 | 14 | #include <stdio.h> |
| SomeRandomBloke | 0:93acdd9f65f4 | 15 | #include <stdlib.h> |
| SomeRandomBloke | 0:93acdd9f65f4 | 16 | #include <time.h> |
| SomeRandomBloke | 0:93acdd9f65f4 | 17 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 18 | /* |
| SomeRandomBloke | 0:93acdd9f65f4 | 19 | Currnet time is returned with packed into a DWORD value. The bit field is as follows: |
| SomeRandomBloke | 0:93acdd9f65f4 | 20 | bit31:25 |
| SomeRandomBloke | 0:93acdd9f65f4 | 21 | Year from 1980 (0..127) |
| SomeRandomBloke | 0:93acdd9f65f4 | 22 | bit24:21 |
| SomeRandomBloke | 0:93acdd9f65f4 | 23 | Month (1..12) |
| SomeRandomBloke | 0:93acdd9f65f4 | 24 | bit20:16 |
| SomeRandomBloke | 0:93acdd9f65f4 | 25 | Day in month(1..31) |
| SomeRandomBloke | 0:93acdd9f65f4 | 26 | bit15:11 |
| SomeRandomBloke | 0:93acdd9f65f4 | 27 | Hour (0..23) |
| SomeRandomBloke | 0:93acdd9f65f4 | 28 | bit10:5 |
| SomeRandomBloke | 0:93acdd9f65f4 | 29 | Minute (0..59) |
| SomeRandomBloke | 0:93acdd9f65f4 | 30 | bit4:0 |
| SomeRandomBloke | 0:93acdd9f65f4 | 31 | Second / 2 (0..29) |
| SomeRandomBloke | 0:93acdd9f65f4 | 32 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 33 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 34 | int tm_sec; |
| SomeRandomBloke | 0:93acdd9f65f4 | 35 | int tm_min; |
| SomeRandomBloke | 0:93acdd9f65f4 | 36 | int tm_hour; |
| SomeRandomBloke | 0:93acdd9f65f4 | 37 | int tm_mday; |
| SomeRandomBloke | 0:93acdd9f65f4 | 38 | int tm_mon; |
| SomeRandomBloke | 0:93acdd9f65f4 | 39 | int tm_year; |
| SomeRandomBloke | 0:93acdd9f65f4 | 40 | int tm_wday; |
| SomeRandomBloke | 0:93acdd9f65f4 | 41 | int tm_yday; |
| SomeRandomBloke | 0:93acdd9f65f4 | 42 | int tm_isdst; |
| SomeRandomBloke | 0:93acdd9f65f4 | 43 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 44 | */ |
| SomeRandomBloke | 0:93acdd9f65f4 | 45 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 46 | DWORD get_fattime (void) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 47 | time_t rawtime; |
| SomeRandomBloke | 0:93acdd9f65f4 | 48 | struct tm *ptm; |
| SomeRandomBloke | 0:93acdd9f65f4 | 49 | time ( &rawtime ); |
| SomeRandomBloke | 0:93acdd9f65f4 | 50 | ptm = localtime ( &rawtime ); |
| SomeRandomBloke | 0:93acdd9f65f4 | 51 | FFSDEBUG("DTM: %d/%d/%d %d:%d:%d\n",ptm->tm_year,ptm->tm_mon,ptm->tm_mday,ptm->tm_hour,ptm->tm_min,ptm->tm_sec); |
| SomeRandomBloke | 0:93acdd9f65f4 | 52 | DWORD fattime = (DWORD)(ptm->tm_year - 80) << 25 |
| SomeRandomBloke | 0:93acdd9f65f4 | 53 | | (DWORD)(ptm->tm_mon + 1) << 21 |
| SomeRandomBloke | 0:93acdd9f65f4 | 54 | | (DWORD)(ptm->tm_mday) << 16 |
| SomeRandomBloke | 0:93acdd9f65f4 | 55 | | (DWORD)(ptm->tm_hour) << 11 |
| SomeRandomBloke | 0:93acdd9f65f4 | 56 | | (DWORD)(ptm->tm_min) << 5 |
| SomeRandomBloke | 0:93acdd9f65f4 | 57 | | (DWORD)(ptm->tm_sec/2); |
| SomeRandomBloke | 0:93acdd9f65f4 | 58 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 59 | FFSDEBUG("Converted: %x\n",fattime); |
| SomeRandomBloke | 0:93acdd9f65f4 | 60 | return fattime; |
| SomeRandomBloke | 0:93acdd9f65f4 | 61 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 62 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 63 | namespace mbed { |
| SomeRandomBloke | 0:93acdd9f65f4 | 64 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 65 | #if FFSDEBUG_ENABLED |
| SomeRandomBloke | 0:93acdd9f65f4 | 66 | static const char *FR_ERRORS[] = { |
| SomeRandomBloke | 0:93acdd9f65f4 | 67 | "FR_OK = 0", |
| SomeRandomBloke | 0:93acdd9f65f4 | 68 | "FR_NOT_READY", |
| SomeRandomBloke | 0:93acdd9f65f4 | 69 | "FR_NO_FILE", |
| SomeRandomBloke | 0:93acdd9f65f4 | 70 | "FR_NO_PATH", |
| SomeRandomBloke | 0:93acdd9f65f4 | 71 | "FR_INVALID_NAME", |
| SomeRandomBloke | 0:93acdd9f65f4 | 72 | "FR_INVALID_DRIVE", |
| SomeRandomBloke | 0:93acdd9f65f4 | 73 | "FR_DENIED", |
| SomeRandomBloke | 0:93acdd9f65f4 | 74 | "FR_EXIST", |
| SomeRandomBloke | 0:93acdd9f65f4 | 75 | "FR_RW_ERROR", |
| SomeRandomBloke | 0:93acdd9f65f4 | 76 | "FR_WRITE_PROTECTED", |
| SomeRandomBloke | 0:93acdd9f65f4 | 77 | "FR_NOT_ENABLED", |
| SomeRandomBloke | 0:93acdd9f65f4 | 78 | "FR_NO_FILESYSTEM", |
| SomeRandomBloke | 0:93acdd9f65f4 | 79 | "FR_INVALID_OBJECT", |
| SomeRandomBloke | 0:93acdd9f65f4 | 80 | "FR_MKFS_ABORTED" |
| SomeRandomBloke | 0:93acdd9f65f4 | 81 | }; |
| SomeRandomBloke | 0:93acdd9f65f4 | 82 | #endif |
| SomeRandomBloke | 0:93acdd9f65f4 | 83 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 84 | FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0}; |
| SomeRandomBloke | 0:93acdd9f65f4 | 85 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 86 | FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 87 | FFSDEBUG("FATFileSystem(%s)\n", n); |
| SomeRandomBloke | 0:93acdd9f65f4 | 88 | for(int i=0; i<_VOLUMES; i++) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 89 | if(_ffs[i] == 0) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 90 | _ffs[i] = this; |
| SomeRandomBloke | 0:93acdd9f65f4 | 91 | _fsid = i; |
| SomeRandomBloke | 0:93acdd9f65f4 | 92 | FFSDEBUG("Mounting [%s] on ffs drive [%d]\n", _name, _fsid); |
| SomeRandomBloke | 0:93acdd9f65f4 | 93 | f_mount(i, &_fs); |
| SomeRandomBloke | 0:93acdd9f65f4 | 94 | return; |
| SomeRandomBloke | 0:93acdd9f65f4 | 95 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 96 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 97 | error("Couldn't create %s in FATFileSystem::FATFileSystem\n",n); |
| SomeRandomBloke | 0:93acdd9f65f4 | 98 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 99 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 100 | FATFileSystem::~FATFileSystem() { |
| SomeRandomBloke | 0:93acdd9f65f4 | 101 | for(int i=0; i<_VOLUMES; i++) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 102 | if(_ffs[i] == this) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 103 | _ffs[i] = 0; |
| SomeRandomBloke | 0:93acdd9f65f4 | 104 | f_mount(i, NULL); |
| SomeRandomBloke | 0:93acdd9f65f4 | 105 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 106 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 107 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 108 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 109 | FileHandle *FATFileSystem::open(const char* name, int flags) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 110 | FFSDEBUG("open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid); |
| SomeRandomBloke | 0:93acdd9f65f4 | 111 | char n[64]; |
| SomeRandomBloke | 0:93acdd9f65f4 | 112 | sprintf(n, "%d:/%s", _fsid, name); |
| SomeRandomBloke | 0:93acdd9f65f4 | 113 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 114 | /* POSIX flags -> FatFS open mode */ |
| SomeRandomBloke | 0:93acdd9f65f4 | 115 | BYTE openmode; |
| SomeRandomBloke | 0:93acdd9f65f4 | 116 | if(flags & O_RDWR) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 117 | openmode = FA_READ|FA_WRITE; |
| SomeRandomBloke | 0:93acdd9f65f4 | 118 | } else if(flags & O_WRONLY) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 119 | openmode = FA_WRITE; |
| SomeRandomBloke | 0:93acdd9f65f4 | 120 | } else { |
| SomeRandomBloke | 0:93acdd9f65f4 | 121 | openmode = FA_READ; |
| SomeRandomBloke | 0:93acdd9f65f4 | 122 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 123 | if(flags & O_CREAT) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 124 | if(flags & O_TRUNC) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 125 | openmode |= FA_CREATE_ALWAYS; |
| SomeRandomBloke | 0:93acdd9f65f4 | 126 | } else { |
| SomeRandomBloke | 0:93acdd9f65f4 | 127 | openmode |= FA_OPEN_ALWAYS; |
| SomeRandomBloke | 0:93acdd9f65f4 | 128 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 129 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 130 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 131 | FIL fh; |
| SomeRandomBloke | 0:93acdd9f65f4 | 132 | FRESULT res = f_open(&fh, n, openmode); |
| SomeRandomBloke | 0:93acdd9f65f4 | 133 | if(res) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 134 | FFSDEBUG("f_open('w') failed (%d, %s)\n", res, FR_ERRORS[res]); |
| SomeRandomBloke | 0:93acdd9f65f4 | 135 | return NULL; |
| SomeRandomBloke | 0:93acdd9f65f4 | 136 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 137 | if(flags & O_APPEND) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 138 | f_lseek(&fh, fh.fsize); |
| SomeRandomBloke | 0:93acdd9f65f4 | 139 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 140 | return new FATFileHandle(fh); |
| SomeRandomBloke | 0:93acdd9f65f4 | 141 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 142 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 143 | int FATFileSystem::remove(const char *filename) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 144 | FRESULT res = f_unlink(filename); |
| SomeRandomBloke | 0:93acdd9f65f4 | 145 | if(res) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 146 | FFSDEBUG("f_unlink() failed (%d, %s)\n", res, FR_ERRORS[res]); |
| SomeRandomBloke | 0:93acdd9f65f4 | 147 | return -1; |
| SomeRandomBloke | 0:93acdd9f65f4 | 148 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 149 | return 0; |
| SomeRandomBloke | 0:93acdd9f65f4 | 150 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 151 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 152 | int FATFileSystem::format() { |
| SomeRandomBloke | 0:93acdd9f65f4 | 153 | FFSDEBUG("format()\n"); |
| SomeRandomBloke | 0:93acdd9f65f4 | 154 | FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster) |
| SomeRandomBloke | 0:93acdd9f65f4 | 155 | if(res) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 156 | FFSDEBUG("f_mkfs() failed (%d, %s)\n", res, FR_ERRORS[res]); |
| SomeRandomBloke | 0:93acdd9f65f4 | 157 | return -1; |
| SomeRandomBloke | 0:93acdd9f65f4 | 158 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 159 | return 0; |
| SomeRandomBloke | 0:93acdd9f65f4 | 160 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 161 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 162 | DirHandle *FATFileSystem::opendir(const char *name) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 163 | FATFS_DIR dir; |
| SomeRandomBloke | 0:93acdd9f65f4 | 164 | FRESULT res = f_opendir(&dir, name); |
| SomeRandomBloke | 0:93acdd9f65f4 | 165 | if(res != 0) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 166 | return NULL; |
| SomeRandomBloke | 0:93acdd9f65f4 | 167 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 168 | return new FATDirHandle(dir); |
| SomeRandomBloke | 0:93acdd9f65f4 | 169 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 170 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 171 | int FATFileSystem::mkdir(const char *name, mode_t mode) { |
| SomeRandomBloke | 0:93acdd9f65f4 | 172 | FRESULT res = f_mkdir(name); |
| SomeRandomBloke | 0:93acdd9f65f4 | 173 | return res == 0 ? 0 : -1; |
| SomeRandomBloke | 0:93acdd9f65f4 | 174 | } |
| SomeRandomBloke | 0:93acdd9f65f4 | 175 | |
| SomeRandomBloke | 0:93acdd9f65f4 | 176 | } // namespace mbed |