A re-written SDFileSystem library with improved compatibility, CRC support, and card removal/replacement support.
Dependents: xadow_m0_SD_Hello roam_v1 roam_v2 Polytech_tours ... more
Diff: FATFileSystem/FATFileSystem.cpp
- Revision:
- 14:02835aff8504
- Parent:
- 13:635147efa748
- Child:
- 15:c9e938f6934f
--- a/FATFileSystem/FATFileSystem.cpp Mon Aug 18 15:09:52 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,144 +0,0 @@ -/* 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::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; -}