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- /* mbed Microcontroller Library
- * Copyright (c) 2006-2012 ARM Limited
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
- #include "mbed.h"
-
- #include "ffconf.h"
- #include "mbed_debug.h"
-
- #include "FATFileSystem.h"
- #include "FATFileHandle.h"
- #include "FATDirHandle.h"
-
- DWORD get_fattime(void) {
- time_t rawtime;
- time(&rawtime);
- struct tm *ptm = localtime(&rawtime);
- return (DWORD)(ptm->tm_year - 80) << 25
- | (DWORD)(ptm->tm_mon + 1 ) << 21
- | (DWORD)(ptm->tm_mday ) << 16
- | (DWORD)(ptm->tm_hour ) << 11
- | (DWORD)(ptm->tm_min ) << 5
- | (DWORD)(ptm->tm_sec/2 );
- }
-
- FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
-
- FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
- debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
- for(int i=0; i<_VOLUMES; i++) {
- if(_ffs[i] == 0) {
- _ffs[i] = this;
- _fsid = i;
- debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
- f_mount(i, &_fs);
- return;
- }
- }
- error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
- }
-
- FATFileSystem::~FATFileSystem() {
- for (int i=0; i<_VOLUMES; i++) {
- if (_ffs[i] == this) {
- _ffs[i] = 0;
- f_mount(i, NULL);
- }
- }
- }
-
- FileHandle *FATFileSystem::open(const char* name, int flags) {
- debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
- char n[64];
- sprintf(n, "%d:/%s", _fsid, name);
-
- /* POSIX flags -> FatFS open mode */
- BYTE openmode;
- if (flags & O_RDWR) {
- openmode = FA_READ|FA_WRITE;
- } else if(flags & O_WRONLY) {
- openmode = FA_WRITE;
- } else {
- openmode = FA_READ;
- }
- if(flags & O_CREAT) {
- if(flags & O_TRUNC) {
- openmode |= FA_CREATE_ALWAYS;
- } else {
- openmode |= FA_OPEN_ALWAYS;
- }
- }
-
- FIL fh;
- FRESULT res = f_open(&fh, n, openmode);
- if (res) {
- debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
- return NULL;
- }
- if (flags & O_APPEND) {
- f_lseek(&fh, fh.fsize);
- }
- return new FATFileHandle(fh);
- }
-
- int FATFileSystem::remove(const char *filename) {
- FRESULT res = f_unlink(filename);
- if (res) {
- debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
- return -1;
- }
- return 0;
- }
-
- int FATFileSystem::rename(const char *oldname, const char *newname) {
- FRESULT res = f_rename(oldname, newname);
- if (res) {
- debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
- return -1;
- }
- return 0;
- }
-
- int FATFileSystem::format() {
- FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
- if (res) {
- debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
- return -1;
- }
- return 0;
- }
-
- DirHandle *FATFileSystem::opendir(const char *name) {
- FATFS_DIR dir;
- FRESULT res = f_opendir(&dir, name);
- if (res != 0) {
- return NULL;
- }
- return new FATDirHandle(dir);
- }
-
- int FATFileSystem::mkdir(const char *name, mode_t mode) {
- FRESULT res = f_mkdir(name);
- return res == 0 ? 0 : -1;
- }
-
- int FATFileSystem::mount() {
- FRESULT res = f_mount(_fsid, &_fs);
- return res == 0 ? 0 : -1;
- }
-
- int FATFileSystem::unmount() {
- if (disk_sync())
- return -1;
- FRESULT res = f_mount(_fsid, NULL);
- return res == 0 ? 0 : -1;
- }
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