Ryo Iizuka / NySDFileSystem

This is SDFileSystem which corrected the bug for MiMicSDK.

Dependents:   MbedFileServer_1768MiniDK2 RedWireBridge IssueDebug_gcc MiMicRemoteMCU-for-Mbed ... more

Fork of SDFileSystem by mbed official

FATFileSystem/FATFileSystem.cpp@6:972a52e4d92c, 2013-04-26 (annotated)

Committer:
nyatla
Date:
Fri Apr 26 09:07:37 2013 +0000
Revision:
6:972a52e4d92c
Parent:
5:2c7b6bd5b079
Child:
7:5429e81addde
remove sprintf and n[64] from FATFileSystem; change ChaN library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nyatla 5:2c7b6bd5b079 1 /* mbed Microcontroller Library
nyatla 5:2c7b6bd5b079 2 * Copyright (c) 2006-2012 ARM Limited
nyatla 5:2c7b6bd5b079 3 *
nyatla 5:2c7b6bd5b079 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
nyatla 5:2c7b6bd5b079 5 * of this software and associated documentation files (the "Software"), to deal
nyatla 5:2c7b6bd5b079 6 * in the Software without restriction, including without limitation the rights
nyatla 5:2c7b6bd5b079 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
nyatla 5:2c7b6bd5b079 8 * copies of the Software, and to permit persons to whom the Software is
nyatla 5:2c7b6bd5b079 9 * furnished to do so, subject to the following conditions:
nyatla 5:2c7b6bd5b079 10 *
nyatla 5:2c7b6bd5b079 11 * The above copyright notice and this permission notice shall be included in
nyatla 5:2c7b6bd5b079 12 * all copies or substantial portions of the Software.
nyatla 5:2c7b6bd5b079 13 *
nyatla 5:2c7b6bd5b079 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
nyatla 5:2c7b6bd5b079 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
nyatla 5:2c7b6bd5b079 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
nyatla 5:2c7b6bd5b079 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
nyatla 5:2c7b6bd5b079 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nyatla 5:2c7b6bd5b079 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
nyatla 5:2c7b6bd5b079 20 * SOFTWARE.
nyatla 5:2c7b6bd5b079 21 */
nyatla 5:2c7b6bd5b079 22 #include "mbed.h"
nyatla 5:2c7b6bd5b079 23
nyatla 5:2c7b6bd5b079 24 #include "ffconf.h"
nyatla 5:2c7b6bd5b079 25 #include "mbed_debug.h"
nyatla 5:2c7b6bd5b079 26
nyatla 5:2c7b6bd5b079 27 #include "FATFileSystem.h"
nyatla 5:2c7b6bd5b079 28 #include "FATFileHandle.h"
nyatla 5:2c7b6bd5b079 29 #include "FATDirHandle.h"
nyatla 5:2c7b6bd5b079 30
nyatla 5:2c7b6bd5b079 31 DWORD get_fattime(void) {
nyatla 5:2c7b6bd5b079 32 time_t rawtime;
nyatla 5:2c7b6bd5b079 33 time(&rawtime);
nyatla 5:2c7b6bd5b079 34 struct tm *ptm = localtime(&rawtime);
nyatla 5:2c7b6bd5b079 35 return (DWORD)(ptm->tm_year - 80) << 25
nyatla 5:2c7b6bd5b079 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
nyatla 5:2c7b6bd5b079 37 | (DWORD)(ptm->tm_mday ) << 16
nyatla 5:2c7b6bd5b079 38 | (DWORD)(ptm->tm_hour ) << 11
nyatla 5:2c7b6bd5b079 39 | (DWORD)(ptm->tm_min ) << 5
nyatla 5:2c7b6bd5b079 40 | (DWORD)(ptm->tm_sec/2 );
nyatla 5:2c7b6bd5b079 41 }
nyatla 5:2c7b6bd5b079 42
nyatla 5:2c7b6bd5b079 43 FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
nyatla 5:2c7b6bd5b079 44
nyatla 5:2c7b6bd5b079 45 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
nyatla 5:2c7b6bd5b079 46 debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
nyatla 5:2c7b6bd5b079 47 for(int i=0; i<_VOLUMES; i++) {
nyatla 5:2c7b6bd5b079 48 if(_ffs[i] == 0) {
nyatla 5:2c7b6bd5b079 49 _ffs[i] = this;
nyatla 5:2c7b6bd5b079 50 _fsid = i;
nyatla 5:2c7b6bd5b079 51 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
nyatla 5:2c7b6bd5b079 52 f_mount(i, &_fs);
nyatla 5:2c7b6bd5b079 53 return;
nyatla 5:2c7b6bd5b079 54 }
nyatla 5:2c7b6bd5b079 55 }
nyatla 5:2c7b6bd5b079 56 error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
nyatla 5:2c7b6bd5b079 57 }
nyatla 5:2c7b6bd5b079 58
nyatla 5:2c7b6bd5b079 59 FATFileSystem::~FATFileSystem() {
nyatla 5:2c7b6bd5b079 60 for (int i=0; i<_VOLUMES; i++) {
nyatla 5:2c7b6bd5b079 61 if (_ffs[i] == this) {
nyatla 5:2c7b6bd5b079 62 _ffs[i] = 0;
nyatla 5:2c7b6bd5b079 63 f_mount(i, NULL);
nyatla 5:2c7b6bd5b079 64 }
nyatla 5:2c7b6bd5b079 65 }
nyatla 5:2c7b6bd5b079 66 }
nyatla 5:2c7b6bd5b079 67
nyatla 5:2c7b6bd5b079 68 FileHandle *FATFileSystem::open(const char* name, int flags) {
nyatla 5:2c7b6bd5b079 69 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
nyatla 6:972a52e4d92c 70 // char n[64];
nyatla 6:972a52e4d92c 71 // sprintf(n, "%d:/%s", _fsid, name);
nyatla 5:2c7b6bd5b079 72
nyatla 5:2c7b6bd5b079 73 /* POSIX flags -> FatFS open mode */
nyatla 5:2c7b6bd5b079 74 BYTE openmode;
nyatla 5:2c7b6bd5b079 75 if (flags & O_RDWR) {
nyatla 5:2c7b6bd5b079 76 openmode = FA_READ|FA_WRITE;
nyatla 5:2c7b6bd5b079 77 } else if(flags & O_WRONLY) {
nyatla 5:2c7b6bd5b079 78 openmode = FA_WRITE;
nyatla 5:2c7b6bd5b079 79 } else {
nyatla 5:2c7b6bd5b079 80 openmode = FA_READ;
nyatla 5:2c7b6bd5b079 81 }
nyatla 5:2c7b6bd5b079 82 if(flags & O_CREAT) {
nyatla 5:2c7b6bd5b079 83 if(flags & O_TRUNC) {
nyatla 5:2c7b6bd5b079 84 openmode |= FA_CREATE_ALWAYS;
nyatla 5:2c7b6bd5b079 85 } else {
nyatla 5:2c7b6bd5b079 86 openmode |= FA_OPEN_ALWAYS;
nyatla 5:2c7b6bd5b079 87 }
nyatla 5:2c7b6bd5b079 88 }
nyatla 5:2c7b6bd5b079 89 FIL fh;
nyatla 6:972a52e4d92c 90 FRESULT res = f_open(&fh,this->_fsid,name, openmode);
nyatla 5:2c7b6bd5b079 91 if (res) {
nyatla 5:2c7b6bd5b079 92 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
nyatla 5:2c7b6bd5b079 93 return NULL;
nyatla 5:2c7b6bd5b079 94 }
nyatla 5:2c7b6bd5b079 95 if (flags & O_APPEND) {
nyatla 5:2c7b6bd5b079 96 f_lseek(&fh, fh.fsize);
nyatla 5:2c7b6bd5b079 97 }
nyatla 5:2c7b6bd5b079 98 return new FATFileHandle(fh);
nyatla 5:2c7b6bd5b079 99 }
nyatla 5:2c7b6bd5b079 100
nyatla 5:2c7b6bd5b079 101 int FATFileSystem::remove(const char *filename) {
nyatla 6:972a52e4d92c 102 FRESULT res = f_unlink(this->_fsid,filename);
nyatla 5:2c7b6bd5b079 103 if (res) {
nyatla 5:2c7b6bd5b079 104 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
nyatla 5:2c7b6bd5b079 105 return -1;
nyatla 5:2c7b6bd5b079 106 }
nyatla 5:2c7b6bd5b079 107 return 0;
nyatla 5:2c7b6bd5b079 108 }
nyatla 5:2c7b6bd5b079 109
nyatla 5:2c7b6bd5b079 110 int FATFileSystem::format() {
nyatla 5:2c7b6bd5b079 111 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
nyatla 5:2c7b6bd5b079 112 if (res) {
nyatla 5:2c7b6bd5b079 113 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
nyatla 5:2c7b6bd5b079 114 return -1;
nyatla 5:2c7b6bd5b079 115 }
nyatla 5:2c7b6bd5b079 116 return 0;
nyatla 5:2c7b6bd5b079 117 }
nyatla 5:2c7b6bd5b079 118 DirHandle *FATFileSystem::opendir(const char *name) {
nyatla 6:972a52e4d92c 119 FATFS_DIR dir;
nyatla 6:972a52e4d92c 120 FRESULT res = f_opendir(&dir,this->_fsid,name);
nyatla 5:2c7b6bd5b079 121 if (res != 0) {
nyatla 5:2c7b6bd5b079 122 return NULL;
nyatla 5:2c7b6bd5b079 123 }
nyatla 5:2c7b6bd5b079 124 return new FATDirHandle(dir);
nyatla 5:2c7b6bd5b079 125 }
nyatla 5:2c7b6bd5b079 126
nyatla 5:2c7b6bd5b079 127 int FATFileSystem::mkdir(const char *name, mode_t mode) {
nyatla 6:972a52e4d92c 128 FRESULT res = f_mkdir(this->_fsid,name);
nyatla 5:2c7b6bd5b079 129 return res == 0 ? 0 : -1;
nyatla 5:2c7b6bd5b079 130 }