Revised to support ability to have both SD and USB drives mounted.
Dependents: Multi-FileSystem Multi-FileSystem
Fork of FATFileSystem by
FATFileSystem.cpp@9:4000fad3b21f, 2016-03-13 (annotated)
- Committer:
- WiredHome
- Date:
- Sun Mar 13 00:58:52 2016 +0000
- Revision:
- 9:4000fad3b21f
- Parent:
- 8:f08059355141
- Child:
- 10:e58f6254f8a2
allocate filename buffers based on _MAX_LFN, not a hard-coded '64'.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
WiredHome | 9:4000fad3b21f | 1 | /* mbed Microcontroller Library |
WiredHome | 9:4000fad3b21f | 2 | * Copyright (c) 2006-2012 ARM Limited |
WiredHome | 9:4000fad3b21f | 3 | * |
WiredHome | 9:4000fad3b21f | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
WiredHome | 9:4000fad3b21f | 5 | * of this software and associated documentation files (the "Software"), to deal |
WiredHome | 9:4000fad3b21f | 6 | * in the Software without restriction, including without limitation the rights |
WiredHome | 9:4000fad3b21f | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
WiredHome | 9:4000fad3b21f | 8 | * copies of the Software, and to permit persons to whom the Software is |
WiredHome | 9:4000fad3b21f | 9 | * furnished to do so, subject to the following conditions: |
WiredHome | 9:4000fad3b21f | 10 | * |
WiredHome | 9:4000fad3b21f | 11 | * The above copyright notice and this permission notice shall be included in |
WiredHome | 9:4000fad3b21f | 12 | * all copies or substantial portions of the Software. |
WiredHome | 9:4000fad3b21f | 13 | * |
WiredHome | 9:4000fad3b21f | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
WiredHome | 9:4000fad3b21f | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
WiredHome | 9:4000fad3b21f | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
WiredHome | 9:4000fad3b21f | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
WiredHome | 9:4000fad3b21f | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
WiredHome | 9:4000fad3b21f | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
WiredHome | 9:4000fad3b21f | 20 | * SOFTWARE. |
WiredHome | 9:4000fad3b21f | 21 | */ |
WiredHome | 9:4000fad3b21f | 22 | #include "mbed.h" |
WiredHome | 9:4000fad3b21f | 23 | |
WiredHome | 9:4000fad3b21f | 24 | #include "ffconf.h" |
WiredHome | 9:4000fad3b21f | 25 | #include "mbed_debug.h" |
WiredHome | 9:4000fad3b21f | 26 | |
WiredHome | 9:4000fad3b21f | 27 | #include "FATFileSystem.h" |
WiredHome | 9:4000fad3b21f | 28 | #include "FATFileHandle.h" |
WiredHome | 9:4000fad3b21f | 29 | #include "FATDirHandle.h" |
WiredHome | 9:4000fad3b21f | 30 | |
WiredHome | 9:4000fad3b21f | 31 | |
WiredHome | 9:4000fad3b21f | 32 | //#define DEBUG "FtFS" |
WiredHome | 9:4000fad3b21f | 33 | // ... |
WiredHome | 9:4000fad3b21f | 34 | // INFO("Stuff to show %d", var); // new-line is automatically appended |
WiredHome | 9:4000fad3b21f | 35 | // |
WiredHome | 9:4000fad3b21f | 36 | #if (defined(DEBUG) && !defined(TARGET_LPC11U24)) |
WiredHome | 9:4000fad3b21f | 37 | #include "mbed.h" |
WiredHome | 9:4000fad3b21f | 38 | #define INFO(x, ...) std::printf("[INF %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); |
WiredHome | 9:4000fad3b21f | 39 | #define WARN(x, ...) std::printf("[WRN %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); |
WiredHome | 9:4000fad3b21f | 40 | #define ERR(x, ...) std::printf("[ERR %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); |
WiredHome | 9:4000fad3b21f | 41 | static void HexDump(const char * title, const uint8_t * p, int count) |
WiredHome | 9:4000fad3b21f | 42 | { |
WiredHome | 9:4000fad3b21f | 43 | int i; |
WiredHome | 9:4000fad3b21f | 44 | char buf[100] = "0000: "; |
WiredHome | 9:4000fad3b21f | 45 | |
WiredHome | 9:4000fad3b21f | 46 | if (*title) |
WiredHome | 9:4000fad3b21f | 47 | INFO("%s", title); |
WiredHome | 9:4000fad3b21f | 48 | for (i=0; i<count; ) { |
WiredHome | 9:4000fad3b21f | 49 | sprintf(buf + strlen(buf), "%02X ", *(p+i)); |
WiredHome | 9:4000fad3b21f | 50 | if ((++i & 0x0F) == 0x00) { |
WiredHome | 9:4000fad3b21f | 51 | INFO("%s", buf); |
WiredHome | 9:4000fad3b21f | 52 | if (i < count) |
WiredHome | 9:4000fad3b21f | 53 | sprintf(buf, "%04X: ", i); |
WiredHome | 9:4000fad3b21f | 54 | else |
WiredHome | 9:4000fad3b21f | 55 | buf[0] = '\0'; |
WiredHome | 9:4000fad3b21f | 56 | } |
WiredHome | 9:4000fad3b21f | 57 | } |
WiredHome | 9:4000fad3b21f | 58 | if (strlen(buf)) |
WiredHome | 9:4000fad3b21f | 59 | INFO("%s", buf); |
WiredHome | 9:4000fad3b21f | 60 | } |
WiredHome | 9:4000fad3b21f | 61 | #else |
WiredHome | 9:4000fad3b21f | 62 | #define INFO(x, ...) |
WiredHome | 9:4000fad3b21f | 63 | #define WARN(x, ...) |
WiredHome | 9:4000fad3b21f | 64 | #define ERR(x, ...) |
WiredHome | 9:4000fad3b21f | 65 | #define HexDump(a, b, c) |
WiredHome | 9:4000fad3b21f | 66 | #endif |
WiredHome | 9:4000fad3b21f | 67 | |
WiredHome | 9:4000fad3b21f | 68 | DWORD get_fattime(void) { |
WiredHome | 9:4000fad3b21f | 69 | time_t rawtime; |
WiredHome | 9:4000fad3b21f | 70 | time(&rawtime); |
WiredHome | 9:4000fad3b21f | 71 | struct tm *ptm = localtime(&rawtime); |
WiredHome | 9:4000fad3b21f | 72 | return (DWORD)(ptm->tm_year - 80) << 25 |
WiredHome | 9:4000fad3b21f | 73 | | (DWORD)(ptm->tm_mon + 1 ) << 21 |
WiredHome | 9:4000fad3b21f | 74 | | (DWORD)(ptm->tm_mday ) << 16 |
WiredHome | 9:4000fad3b21f | 75 | | (DWORD)(ptm->tm_hour ) << 11 |
WiredHome | 9:4000fad3b21f | 76 | | (DWORD)(ptm->tm_min ) << 5 |
WiredHome | 9:4000fad3b21f | 77 | | (DWORD)(ptm->tm_sec/2 ); |
WiredHome | 9:4000fad3b21f | 78 | } |
WiredHome | 9:4000fad3b21f | 79 | |
WiredHome | 9:4000fad3b21f | 80 | FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0}; |
WiredHome | 9:4000fad3b21f | 81 | |
WiredHome | 9:4000fad3b21f | 82 | FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) { |
WiredHome | 9:4000fad3b21f | 83 | INFO("FATFileSystem(%s)", n); |
WiredHome | 9:4000fad3b21f | 84 | for(int i=0; i<_VOLUMES; i++) { |
WiredHome | 9:4000fad3b21f | 85 | if(_ffs[i] == this) // 2nd attempt to mount the same drive |
WiredHome | 9:4000fad3b21f | 86 | return; |
WiredHome | 9:4000fad3b21f | 87 | if(_ffs[i] == 0) { |
WiredHome | 9:4000fad3b21f | 88 | _ffs[i] = this; |
WiredHome | 9:4000fad3b21f | 89 | _fsid[0] = '0' + i; |
WiredHome | 9:4000fad3b21f | 90 | _fsid[1] = ':'; |
WiredHome | 9:4000fad3b21f | 91 | _fsid[2] = '\0'; |
WiredHome | 9:4000fad3b21f | 92 | INFO("Mounting [%s] on ffs drive [%s]", _name, _fsid); |
WiredHome | 9:4000fad3b21f | 93 | f_mount(&_fs, _fsid, 0); |
WiredHome | 9:4000fad3b21f | 94 | for (int d=0; d<_VOLUMES; d++) { |
WiredHome | 9:4000fad3b21f | 95 | INFO(" _ffs[%d] = %p", d, _ffs[d]); |
WiredHome | 9:4000fad3b21f | 96 | } |
WiredHome | 9:4000fad3b21f | 97 | return; |
WiredHome | 9:4000fad3b21f | 98 | } |
WiredHome | 9:4000fad3b21f | 99 | } |
WiredHome | 9:4000fad3b21f | 100 | error("Couldn't create %s in FATFileSystem::FATFileSystem\r\n", n); |
WiredHome | 9:4000fad3b21f | 101 | } |
WiredHome | 8:f08059355141 | 102 | |
WiredHome | 9:4000fad3b21f | 103 | FATFileSystem::~FATFileSystem() { |
WiredHome | 9:4000fad3b21f | 104 | for (int i=0; i<_VOLUMES; i++) { |
WiredHome | 9:4000fad3b21f | 105 | if (_ffs[i] == this) { |
WiredHome | 9:4000fad3b21f | 106 | _ffs[i] = 0; |
WiredHome | 9:4000fad3b21f | 107 | f_mount(NULL, _fsid, 0); |
WiredHome | 9:4000fad3b21f | 108 | } |
WiredHome | 9:4000fad3b21f | 109 | } |
WiredHome | 9:4000fad3b21f | 110 | } |
WiredHome | 9:4000fad3b21f | 111 | |
WiredHome | 9:4000fad3b21f | 112 | FileHandle *FATFileSystem::open(const char* name, int flags) { |
WiredHome | 9:4000fad3b21f | 113 | INFO("open(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); |
WiredHome | 9:4000fad3b21f | 114 | char n[_MAX_LFN]; |
WiredHome | 9:4000fad3b21f | 115 | sprintf(n, "%s/%s", _fsid, name); |
WiredHome | 9:4000fad3b21f | 116 | INFO(" :: open(%s)", n); |
WiredHome | 9:4000fad3b21f | 117 | |
WiredHome | 9:4000fad3b21f | 118 | /* POSIX flags -> FatFS open mode */ |
WiredHome | 9:4000fad3b21f | 119 | BYTE openmode; |
WiredHome | 9:4000fad3b21f | 120 | if (flags & O_RDWR) { |
WiredHome | 9:4000fad3b21f | 121 | openmode = FA_READ|FA_WRITE; |
WiredHome | 9:4000fad3b21f | 122 | } else if(flags & O_WRONLY) { |
WiredHome | 9:4000fad3b21f | 123 | openmode = FA_WRITE; |
WiredHome | 9:4000fad3b21f | 124 | } else { |
WiredHome | 9:4000fad3b21f | 125 | openmode = FA_READ; |
WiredHome | 9:4000fad3b21f | 126 | } |
WiredHome | 9:4000fad3b21f | 127 | if(flags & O_CREAT) { |
WiredHome | 9:4000fad3b21f | 128 | if(flags & O_TRUNC) { |
WiredHome | 9:4000fad3b21f | 129 | openmode |= FA_CREATE_ALWAYS; |
WiredHome | 9:4000fad3b21f | 130 | } else { |
WiredHome | 9:4000fad3b21f | 131 | openmode |= FA_OPEN_ALWAYS; |
WiredHome | 9:4000fad3b21f | 132 | } |
WiredHome | 9:4000fad3b21f | 133 | } |
WiredHome | 9:4000fad3b21f | 134 | |
WiredHome | 9:4000fad3b21f | 135 | FIL fh; |
WiredHome | 9:4000fad3b21f | 136 | FRESULT res = f_open(&fh, n, openmode); |
WiredHome | 9:4000fad3b21f | 137 | if (res) { |
WiredHome | 9:4000fad3b21f | 138 | INFO("f_open('w') failed: %d", res); |
WiredHome | 9:4000fad3b21f | 139 | return NULL; |
WiredHome | 9:4000fad3b21f | 140 | } |
WiredHome | 9:4000fad3b21f | 141 | if (flags & O_APPEND) { |
WiredHome | 9:4000fad3b21f | 142 | f_lseek(&fh, fh.fsize); |
WiredHome | 9:4000fad3b21f | 143 | } |
WiredHome | 9:4000fad3b21f | 144 | return new FATFileHandle(fh); |
WiredHome | 9:4000fad3b21f | 145 | } |
WiredHome | 9:4000fad3b21f | 146 | |
WiredHome | 9:4000fad3b21f | 147 | int FATFileSystem::remove(const char *name) { |
WiredHome | 9:4000fad3b21f | 148 | INFO("remove(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); |
WiredHome | 9:4000fad3b21f | 149 | char n[_MAX_LFN]; |
WiredHome | 9:4000fad3b21f | 150 | sprintf(n, "%s/%s", _fsid, name); |
WiredHome | 9:4000fad3b21f | 151 | INFO(" :: remove(%s)", n); |
WiredHome | 9:4000fad3b21f | 152 | FRESULT res = f_unlink(n); |
WiredHome | 9:4000fad3b21f | 153 | if (res) { |
WiredHome | 9:4000fad3b21f | 154 | INFO("f_unlink() failed: %d", res); |
WiredHome | 9:4000fad3b21f | 155 | return -1; |
WiredHome | 9:4000fad3b21f | 156 | } |
WiredHome | 9:4000fad3b21f | 157 | return 0; |
WiredHome | 9:4000fad3b21f | 158 | } |
WiredHome | 9:4000fad3b21f | 159 | |
WiredHome | 9:4000fad3b21f | 160 | int FATFileSystem::rename(const char *oldname, const char *newname) { |
WiredHome | 9:4000fad3b21f | 161 | char o[_MAX_LFN], n[_MAX_LFN]; |
WiredHome | 9:4000fad3b21f | 162 | sprintf(o, "%s/%s", _fsid, oldname); |
WiredHome | 9:4000fad3b21f | 163 | sprintf(n, "%s/%s", _fsid, newname); |
WiredHome | 9:4000fad3b21f | 164 | INFO(" :: rename(%s,%s)", o, n); |
WiredHome | 9:4000fad3b21f | 165 | FRESULT res = f_rename(oldname, newname); |
WiredHome | 9:4000fad3b21f | 166 | if (res) { |
WiredHome | 9:4000fad3b21f | 167 | INFO("f_rename() failed: %d", res); |
WiredHome | 9:4000fad3b21f | 168 | return -1; |
WiredHome | 9:4000fad3b21f | 169 | } |
WiredHome | 9:4000fad3b21f | 170 | return 0; |
WiredHome | 9:4000fad3b21f | 171 | } |
WiredHome | 9:4000fad3b21f | 172 | |
WiredHome | 9:4000fad3b21f | 173 | int FATFileSystem::format() { |
WiredHome | 9:4000fad3b21f | 174 | FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster) |
WiredHome | 9:4000fad3b21f | 175 | if (res) { |
WiredHome | 9:4000fad3b21f | 176 | INFO("f_mkfs() failed: %d", res); |
WiredHome | 9:4000fad3b21f | 177 | return -1; |
WiredHome | 9:4000fad3b21f | 178 | } |
WiredHome | 9:4000fad3b21f | 179 | return 0; |
WiredHome | 9:4000fad3b21f | 180 | } |
WiredHome | 9:4000fad3b21f | 181 | |
WiredHome | 9:4000fad3b21f | 182 | DirHandle *FATFileSystem::opendir(const char *name) { |
WiredHome | 9:4000fad3b21f | 183 | FATFS_DIR dir; |
WiredHome | 9:4000fad3b21f | 184 | char n[_MAX_LFN]; |
WiredHome | 9:4000fad3b21f | 185 | sprintf(n, "%s/%s", _fsid, name); |
WiredHome | 9:4000fad3b21f | 186 | FRESULT res = f_opendir(&dir, n); |
WiredHome | 9:4000fad3b21f | 187 | if (res != 0) { |
WiredHome | 9:4000fad3b21f | 188 | return NULL; |
WiredHome | 9:4000fad3b21f | 189 | } |
WiredHome | 9:4000fad3b21f | 190 | return new FATDirHandle(dir); |
WiredHome | 9:4000fad3b21f | 191 | } |
WiredHome | 9:4000fad3b21f | 192 | |
WiredHome | 9:4000fad3b21f | 193 | int FATFileSystem::mkdir(const char *name, mode_t mode) { |
WiredHome | 9:4000fad3b21f | 194 | char n[_MAX_LFN]; |
WiredHome | 9:4000fad3b21f | 195 | sprintf(n, "%s/%s", _fsid, name); |
WiredHome | 9:4000fad3b21f | 196 | FRESULT res = f_mkdir(n); |
WiredHome | 9:4000fad3b21f | 197 | return res == 0 ? 0 : -1; |
WiredHome | 9:4000fad3b21f | 198 | } |
WiredHome | 9:4000fad3b21f | 199 | |
WiredHome | 9:4000fad3b21f | 200 | int FATFileSystem::mount() { |
WiredHome | 9:4000fad3b21f | 201 | FRESULT res = f_mount(&_fs, _fsid, 1); |
WiredHome | 9:4000fad3b21f | 202 | return res == 0 ? 0 : -1; |
WiredHome | 9:4000fad3b21f | 203 | } |
WiredHome | 9:4000fad3b21f | 204 | |
WiredHome | 9:4000fad3b21f | 205 | int FATFileSystem::unmount() { |
WiredHome | 9:4000fad3b21f | 206 | if (disk_sync()) |
WiredHome | 9:4000fad3b21f | 207 | return -1; |
WiredHome | 9:4000fad3b21f | 208 | FRESULT res = f_mount(NULL, _fsid, 0); |
WiredHome | 9:4000fad3b21f | 209 | return res == 0 ? 0 : -1; |
WiredHome | 9:4000fad3b21f | 210 | } |
WiredHome | 9:4000fad3b21f | 211 |