Dylan Saada / Mbed 2 deprecated telemetre2

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Dependencies:   mbed

USBHost/FATFileSystem/FATFileSystem.cpp@0:6ce9c65992e5, 2015-04-15 (annotated)

Committer:
dylancachan
Date:
Wed Apr 15 06:23:18 2015 +0000
Revision:
0:6ce9c65992e5
telemetre

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dylancachan 0:6ce9c65992e5 1 /* mbed Microcontroller Library
dylancachan 0:6ce9c65992e5 2 * Copyright (c) 2006-2012 ARM Limited
dylancachan 0:6ce9c65992e5 3 *
dylancachan 0:6ce9c65992e5 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
dylancachan 0:6ce9c65992e5 5 * of this software and associated documentation files (the "Software"), to deal
dylancachan 0:6ce9c65992e5 6 * in the Software without restriction, including without limitation the rights
dylancachan 0:6ce9c65992e5 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dylancachan 0:6ce9c65992e5 8 * copies of the Software, and to permit persons to whom the Software is
dylancachan 0:6ce9c65992e5 9 * furnished to do so, subject to the following conditions:
dylancachan 0:6ce9c65992e5 10 *
dylancachan 0:6ce9c65992e5 11 * The above copyright notice and this permission notice shall be included in
dylancachan 0:6ce9c65992e5 12 * all copies or substantial portions of the Software.
dylancachan 0:6ce9c65992e5 13 *
dylancachan 0:6ce9c65992e5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dylancachan 0:6ce9c65992e5 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dylancachan 0:6ce9c65992e5 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dylancachan 0:6ce9c65992e5 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dylancachan 0:6ce9c65992e5 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dylancachan 0:6ce9c65992e5 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
dylancachan 0:6ce9c65992e5 20 * SOFTWARE.
dylancachan 0:6ce9c65992e5 21 */
dylancachan 0:6ce9c65992e5 22 #include "mbed.h"
dylancachan 0:6ce9c65992e5 23
dylancachan 0:6ce9c65992e5 24 #include "ffconf.h"
dylancachan 0:6ce9c65992e5 25 #include "mbed_debug.h"
dylancachan 0:6ce9c65992e5 26
dylancachan 0:6ce9c65992e5 27 #include "FATFileSystem.h"
dylancachan 0:6ce9c65992e5 28 #include "FATFileHandle.h"
dylancachan 0:6ce9c65992e5 29 #include "FATDirHandle.h"
dylancachan 0:6ce9c65992e5 30
dylancachan 0:6ce9c65992e5 31 DWORD get_fattime(void) {
dylancachan 0:6ce9c65992e5 32 time_t rawtime;
dylancachan 0:6ce9c65992e5 33 time(&rawtime);
dylancachan 0:6ce9c65992e5 34 struct tm *ptm = localtime(&rawtime);
dylancachan 0:6ce9c65992e5 35 return (DWORD)(ptm->tm_year - 80) << 25
dylancachan 0:6ce9c65992e5 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
dylancachan 0:6ce9c65992e5 37 | (DWORD)(ptm->tm_mday ) << 16
dylancachan 0:6ce9c65992e5 38 | (DWORD)(ptm->tm_hour ) << 11
dylancachan 0:6ce9c65992e5 39 | (DWORD)(ptm->tm_min ) << 5
dylancachan 0:6ce9c65992e5 40 | (DWORD)(ptm->tm_sec/2 );
dylancachan 0:6ce9c65992e5 41 }
dylancachan 0:6ce9c65992e5 42
dylancachan 0:6ce9c65992e5 43 FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
dylancachan 0:6ce9c65992e5 44
dylancachan 0:6ce9c65992e5 45 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
dylancachan 0:6ce9c65992e5 46 debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
dylancachan 0:6ce9c65992e5 47 for(int i=0; i<_VOLUMES; i++) {
dylancachan 0:6ce9c65992e5 48 if(_ffs[i] == 0) {
dylancachan 0:6ce9c65992e5 49 _ffs[i] = this;
dylancachan 0:6ce9c65992e5 50 _fsid = i;
dylancachan 0:6ce9c65992e5 51 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
dylancachan 0:6ce9c65992e5 52 f_mount(i, &_fs);
dylancachan 0:6ce9c65992e5 53 return;
dylancachan 0:6ce9c65992e5 54 }
dylancachan 0:6ce9c65992e5 55 }
dylancachan 0:6ce9c65992e5 56 error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
dylancachan 0:6ce9c65992e5 57 }
dylancachan 0:6ce9c65992e5 58
dylancachan 0:6ce9c65992e5 59 FATFileSystem::~FATFileSystem() {
dylancachan 0:6ce9c65992e5 60 for (int i=0; i<_VOLUMES; i++) {
dylancachan 0:6ce9c65992e5 61 if (_ffs[i] == this) {
dylancachan 0:6ce9c65992e5 62 _ffs[i] = 0;
dylancachan 0:6ce9c65992e5 63 f_mount(i, NULL);
dylancachan 0:6ce9c65992e5 64 }
dylancachan 0:6ce9c65992e5 65 }
dylancachan 0:6ce9c65992e5 66 }
dylancachan 0:6ce9c65992e5 67
dylancachan 0:6ce9c65992e5 68 FileHandle *FATFileSystem::open(const char* name, int flags) {
dylancachan 0:6ce9c65992e5 69 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
dylancachan 0:6ce9c65992e5 70 char n[64];
dylancachan 0:6ce9c65992e5 71 sprintf(n, "%d:/%s", _fsid, name);
dylancachan 0:6ce9c65992e5 72
dylancachan 0:6ce9c65992e5 73 /* POSIX flags -> FatFS open mode */
dylancachan 0:6ce9c65992e5 74 BYTE openmode;
dylancachan 0:6ce9c65992e5 75 if (flags & O_RDWR) {
dylancachan 0:6ce9c65992e5 76 openmode = FA_READ|FA_WRITE;
dylancachan 0:6ce9c65992e5 77 } else if(flags & O_WRONLY) {
dylancachan 0:6ce9c65992e5 78 openmode = FA_WRITE;
dylancachan 0:6ce9c65992e5 79 } else {
dylancachan 0:6ce9c65992e5 80 openmode = FA_READ;
dylancachan 0:6ce9c65992e5 81 }
dylancachan 0:6ce9c65992e5 82 if(flags & O_CREAT) {
dylancachan 0:6ce9c65992e5 83 if(flags & O_TRUNC) {
dylancachan 0:6ce9c65992e5 84 openmode |= FA_CREATE_ALWAYS;
dylancachan 0:6ce9c65992e5 85 } else {
dylancachan 0:6ce9c65992e5 86 openmode |= FA_OPEN_ALWAYS;
dylancachan 0:6ce9c65992e5 87 }
dylancachan 0:6ce9c65992e5 88 }
dylancachan 0:6ce9c65992e5 89
dylancachan 0:6ce9c65992e5 90 FIL fh;
dylancachan 0:6ce9c65992e5 91 FRESULT res = f_open(&fh, n, openmode);
dylancachan 0:6ce9c65992e5 92 if (res) {
dylancachan 0:6ce9c65992e5 93 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
dylancachan 0:6ce9c65992e5 94 return NULL;
dylancachan 0:6ce9c65992e5 95 }
dylancachan 0:6ce9c65992e5 96 if (flags & O_APPEND) {
dylancachan 0:6ce9c65992e5 97 f_lseek(&fh, fh.fsize);
dylancachan 0:6ce9c65992e5 98 }
dylancachan 0:6ce9c65992e5 99 return new FATFileHandle(fh);
dylancachan 0:6ce9c65992e5 100 }
dylancachan 0:6ce9c65992e5 101
dylancachan 0:6ce9c65992e5 102 int FATFileSystem::remove(const char *filename) {
dylancachan 0:6ce9c65992e5 103 FRESULT res = f_unlink(filename);
dylancachan 0:6ce9c65992e5 104 if (res) {
dylancachan 0:6ce9c65992e5 105 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
dylancachan 0:6ce9c65992e5 106 return -1;
dylancachan 0:6ce9c65992e5 107 }
dylancachan 0:6ce9c65992e5 108 return 0;
dylancachan 0:6ce9c65992e5 109 }
dylancachan 0:6ce9c65992e5 110
dylancachan 0:6ce9c65992e5 111 int FATFileSystem::rename(const char *oldname, const char *newname) {
dylancachan 0:6ce9c65992e5 112 FRESULT res = f_rename(oldname, newname);
dylancachan 0:6ce9c65992e5 113 if (res) {
dylancachan 0:6ce9c65992e5 114 debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
dylancachan 0:6ce9c65992e5 115 return -1;
dylancachan 0:6ce9c65992e5 116 }
dylancachan 0:6ce9c65992e5 117 return 0;
dylancachan 0:6ce9c65992e5 118 }
dylancachan 0:6ce9c65992e5 119
dylancachan 0:6ce9c65992e5 120 int FATFileSystem::format() {
dylancachan 0:6ce9c65992e5 121 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
dylancachan 0:6ce9c65992e5 122 if (res) {
dylancachan 0:6ce9c65992e5 123 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
dylancachan 0:6ce9c65992e5 124 return -1;
dylancachan 0:6ce9c65992e5 125 }
dylancachan 0:6ce9c65992e5 126 return 0;
dylancachan 0:6ce9c65992e5 127 }
dylancachan 0:6ce9c65992e5 128
dylancachan 0:6ce9c65992e5 129 DirHandle *FATFileSystem::opendir(const char *name) {
dylancachan 0:6ce9c65992e5 130 FATFS_DIR dir;
dylancachan 0:6ce9c65992e5 131 FRESULT res = f_opendir(&dir, name);
dylancachan 0:6ce9c65992e5 132 if (res != 0) {
dylancachan 0:6ce9c65992e5 133 return NULL;
dylancachan 0:6ce9c65992e5 134 }
dylancachan 0:6ce9c65992e5 135 return new FATDirHandle(dir);
dylancachan 0:6ce9c65992e5 136 }
dylancachan 0:6ce9c65992e5 137
dylancachan 0:6ce9c65992e5 138 int FATFileSystem::mkdir(const char *name, mode_t mode) {
dylancachan 0:6ce9c65992e5 139 FRESULT res = f_mkdir(name);
dylancachan 0:6ce9c65992e5 140 return res == 0 ? 0 : -1;
dylancachan 0:6ce9c65992e5 141 }
dylancachan 0:6ce9c65992e5 142
dylancachan 0:6ce9c65992e5 143 int FATFileSystem::mount() {
dylancachan 0:6ce9c65992e5 144 FRESULT res = f_mount(_fsid, &_fs);
dylancachan 0:6ce9c65992e5 145 return res == 0 ? 0 : -1;
dylancachan 0:6ce9c65992e5 146 }
dylancachan 0:6ce9c65992e5 147
dylancachan 0:6ce9c65992e5 148 int FATFileSystem::unmount() {
dylancachan 0:6ce9c65992e5 149 if (disk_sync())
dylancachan 0:6ce9c65992e5 150 return -1;
dylancachan 0:6ce9c65992e5 151 FRESULT res = f_mount(_fsid, NULL);
dylancachan 0:6ce9c65992e5 152 return res == 0 ? 0 : -1;
dylancachan 0:6ce9c65992e5 153 }