ELEC2645 (2019/20) / Mbed 2 deprecated ELEC2645_Project_el18jgb

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Dependencies:   mbed

SDFileSystem/FATFileSystem/FATFileSystem.cpp@18:c600a6545e81, 2020-05-20 (annotated)

Committer:
el18jgb
Date:
Wed May 20 14:37:02 2020 +0000
Revision:
18:c600a6545e81
spikemode uses accelerometer ;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el18jgb 18:c600a6545e81 1 /* mbed Microcontroller Library
el18jgb 18:c600a6545e81 2 * Copyright (c) 2006-2012 ARM Limited
el18jgb 18:c600a6545e81 3 *
el18jgb 18:c600a6545e81 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
el18jgb 18:c600a6545e81 5 * of this software and associated documentation files (the "Software"), to deal
el18jgb 18:c600a6545e81 6 * in the Software without restriction, including without limitation the rights
el18jgb 18:c600a6545e81 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
el18jgb 18:c600a6545e81 8 * copies of the Software, and to permit persons to whom the Software is
el18jgb 18:c600a6545e81 9 * furnished to do so, subject to the following conditions:
el18jgb 18:c600a6545e81 10 *
el18jgb 18:c600a6545e81 11 * The above copyright notice and this permission notice shall be included in
el18jgb 18:c600a6545e81 12 * all copies or substantial portions of the Software.
el18jgb 18:c600a6545e81 13 *
el18jgb 18:c600a6545e81 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
el18jgb 18:c600a6545e81 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
el18jgb 18:c600a6545e81 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
el18jgb 18:c600a6545e81 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
el18jgb 18:c600a6545e81 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
el18jgb 18:c600a6545e81 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
el18jgb 18:c600a6545e81 20 * SOFTWARE.
el18jgb 18:c600a6545e81 21 */
el18jgb 18:c600a6545e81 22 #include "mbed.h"
el18jgb 18:c600a6545e81 23
el18jgb 18:c600a6545e81 24 #include "ffconf.h"
el18jgb 18:c600a6545e81 25 #include "mbed_debug.h"
el18jgb 18:c600a6545e81 26
el18jgb 18:c600a6545e81 27 #include "FATFileSystem.h"
el18jgb 18:c600a6545e81 28 #include "FATFileHandle.h"
el18jgb 18:c600a6545e81 29 #include "FATDirHandle.h"
el18jgb 18:c600a6545e81 30
el18jgb 18:c600a6545e81 31 DWORD get_fattime(void) {
el18jgb 18:c600a6545e81 32 time_t rawtime;
el18jgb 18:c600a6545e81 33 time(&rawtime);
el18jgb 18:c600a6545e81 34 struct tm *ptm = localtime(&rawtime);
el18jgb 18:c600a6545e81 35 return (DWORD)(ptm->tm_year - 80) << 25
el18jgb 18:c600a6545e81 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
el18jgb 18:c600a6545e81 37 | (DWORD)(ptm->tm_mday ) << 16
el18jgb 18:c600a6545e81 38 | (DWORD)(ptm->tm_hour ) << 11
el18jgb 18:c600a6545e81 39 | (DWORD)(ptm->tm_min ) << 5
el18jgb 18:c600a6545e81 40 | (DWORD)(ptm->tm_sec/2 );
el18jgb 18:c600a6545e81 41 }
el18jgb 18:c600a6545e81 42
el18jgb 18:c600a6545e81 43 FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
el18jgb 18:c600a6545e81 44
el18jgb 18:c600a6545e81 45 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
el18jgb 18:c600a6545e81 46 debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
el18jgb 18:c600a6545e81 47 for(int i=0; i<_VOLUMES; i++) {
el18jgb 18:c600a6545e81 48 if(_ffs[i] == 0) {
el18jgb 18:c600a6545e81 49 _ffs[i] = this;
el18jgb 18:c600a6545e81 50 _fsid[0] = '0' + i;
el18jgb 18:c600a6545e81 51 _fsid[1] = '\0';
el18jgb 18:c600a6545e81 52 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%s]\n", getName(), _fsid);
el18jgb 18:c600a6545e81 53 f_mount(&_fs, _fsid, 0);
el18jgb 18:c600a6545e81 54 return;
el18jgb 18:c600a6545e81 55 }
el18jgb 18:c600a6545e81 56 }
el18jgb 18:c600a6545e81 57 error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
el18jgb 18:c600a6545e81 58 }
el18jgb 18:c600a6545e81 59
el18jgb 18:c600a6545e81 60 FATFileSystem::~FATFileSystem() {
el18jgb 18:c600a6545e81 61 for (int i=0; i<_VOLUMES; i++) {
el18jgb 18:c600a6545e81 62 if (_ffs[i] == this) {
el18jgb 18:c600a6545e81 63 _ffs[i] = 0;
el18jgb 18:c600a6545e81 64 f_mount(NULL, _fsid, 0);
el18jgb 18:c600a6545e81 65 }
el18jgb 18:c600a6545e81 66 }
el18jgb 18:c600a6545e81 67 }
el18jgb 18:c600a6545e81 68
el18jgb 18:c600a6545e81 69 FileHandle *FATFileSystem::open(const char* name, int flags) {
el18jgb 18:c600a6545e81 70 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%s]\n", name, getName(), _fsid);
el18jgb 18:c600a6545e81 71 char n[64];
el18jgb 18:c600a6545e81 72 sprintf(n, "%s:/%s", _fsid, name);
el18jgb 18:c600a6545e81 73
el18jgb 18:c600a6545e81 74 /* POSIX flags -> FatFS open mode */
el18jgb 18:c600a6545e81 75 BYTE openmode;
el18jgb 18:c600a6545e81 76 if (flags & O_RDWR) {
el18jgb 18:c600a6545e81 77 openmode = FA_READ|FA_WRITE;
el18jgb 18:c600a6545e81 78 } else if(flags & O_WRONLY) {
el18jgb 18:c600a6545e81 79 openmode = FA_WRITE;
el18jgb 18:c600a6545e81 80 } else {
el18jgb 18:c600a6545e81 81 openmode = FA_READ;
el18jgb 18:c600a6545e81 82 }
el18jgb 18:c600a6545e81 83 if(flags & O_CREAT) {
el18jgb 18:c600a6545e81 84 if(flags & O_TRUNC) {
el18jgb 18:c600a6545e81 85 openmode |= FA_CREATE_ALWAYS;
el18jgb 18:c600a6545e81 86 } else {
el18jgb 18:c600a6545e81 87 openmode |= FA_OPEN_ALWAYS;
el18jgb 18:c600a6545e81 88 }
el18jgb 18:c600a6545e81 89 }
el18jgb 18:c600a6545e81 90
el18jgb 18:c600a6545e81 91 FIL fh;
el18jgb 18:c600a6545e81 92 FRESULT res = f_open(&fh, n, openmode);
el18jgb 18:c600a6545e81 93 if (res) {
el18jgb 18:c600a6545e81 94 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
el18jgb 18:c600a6545e81 95 return NULL;
el18jgb 18:c600a6545e81 96 }
el18jgb 18:c600a6545e81 97 if (flags & O_APPEND) {
el18jgb 18:c600a6545e81 98 f_lseek(&fh, fh.fsize);
el18jgb 18:c600a6545e81 99 }
el18jgb 18:c600a6545e81 100 return new FATFileHandle(fh);
el18jgb 18:c600a6545e81 101 }
el18jgb 18:c600a6545e81 102
el18jgb 18:c600a6545e81 103 int FATFileSystem::open(FileHandle **file, const char *name, int flags) {
el18jgb 18:c600a6545e81 104 FileHandle *temp = open(name, flags);
el18jgb 18:c600a6545e81 105 if (!temp) {
el18jgb 18:c600a6545e81 106 return -1;
el18jgb 18:c600a6545e81 107 }
el18jgb 18:c600a6545e81 108
el18jgb 18:c600a6545e81 109 *file = temp;
el18jgb 18:c600a6545e81 110 return 0;
el18jgb 18:c600a6545e81 111 }
el18jgb 18:c600a6545e81 112
el18jgb 18:c600a6545e81 113 int FATFileSystem::remove(const char *filename) {
el18jgb 18:c600a6545e81 114 FRESULT res = f_unlink(filename);
el18jgb 18:c600a6545e81 115 if (res) {
el18jgb 18:c600a6545e81 116 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
el18jgb 18:c600a6545e81 117 return -1;
el18jgb 18:c600a6545e81 118 }
el18jgb 18:c600a6545e81 119 return 0;
el18jgb 18:c600a6545e81 120 }
el18jgb 18:c600a6545e81 121
el18jgb 18:c600a6545e81 122 int FATFileSystem::rename(const char *oldname, const char *newname) {
el18jgb 18:c600a6545e81 123 FRESULT res = f_rename(oldname, newname);
el18jgb 18:c600a6545e81 124 if (res) {
el18jgb 18:c600a6545e81 125 debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
el18jgb 18:c600a6545e81 126 return -1;
el18jgb 18:c600a6545e81 127 }
el18jgb 18:c600a6545e81 128 return 0;
el18jgb 18:c600a6545e81 129 }
el18jgb 18:c600a6545e81 130
el18jgb 18:c600a6545e81 131 int FATFileSystem::format() {
el18jgb 18:c600a6545e81 132 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
el18jgb 18:c600a6545e81 133 if (res) {
el18jgb 18:c600a6545e81 134 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
el18jgb 18:c600a6545e81 135 return -1;
el18jgb 18:c600a6545e81 136 }
el18jgb 18:c600a6545e81 137 return 0;
el18jgb 18:c600a6545e81 138 }
el18jgb 18:c600a6545e81 139
el18jgb 18:c600a6545e81 140 DirHandle *FATFileSystem::opendir(const char *name) {
el18jgb 18:c600a6545e81 141 FATFS_DIR dir;
el18jgb 18:c600a6545e81 142 FRESULT res = f_opendir(&dir, name);
el18jgb 18:c600a6545e81 143 if (res != 0) {
el18jgb 18:c600a6545e81 144 return NULL;
el18jgb 18:c600a6545e81 145 }
el18jgb 18:c600a6545e81 146 return new FATDirHandle(dir);
el18jgb 18:c600a6545e81 147 }
el18jgb 18:c600a6545e81 148
el18jgb 18:c600a6545e81 149 int FATFileSystem::open(DirHandle **dir, const char *name) {
el18jgb 18:c600a6545e81 150 DirHandle *temp = opendir(name);
el18jgb 18:c600a6545e81 151 if (!temp) {
el18jgb 18:c600a6545e81 152 return -1;
el18jgb 18:c600a6545e81 153 }
el18jgb 18:c600a6545e81 154
el18jgb 18:c600a6545e81 155 *dir = temp;
el18jgb 18:c600a6545e81 156 return 0;
el18jgb 18:c600a6545e81 157 }
el18jgb 18:c600a6545e81 158
el18jgb 18:c600a6545e81 159 int FATFileSystem::mkdir(const char *name, mode_t mode) {
el18jgb 18:c600a6545e81 160 FRESULT res = f_mkdir(name);
el18jgb 18:c600a6545e81 161 return res == 0 ? 0 : -1;
el18jgb 18:c600a6545e81 162 }
el18jgb 18:c600a6545e81 163
el18jgb 18:c600a6545e81 164 int FATFileSystem::mount() {
el18jgb 18:c600a6545e81 165 FRESULT res = f_mount(&_fs, _fsid, 1);
el18jgb 18:c600a6545e81 166 return res == 0 ? 0 : -1;
el18jgb 18:c600a6545e81 167 }
el18jgb 18:c600a6545e81 168
el18jgb 18:c600a6545e81 169 int FATFileSystem::unmount() {
el18jgb 18:c600a6545e81 170 if (disk_sync())
el18jgb 18:c600a6545e81 171 return -1;
el18jgb 18:c600a6545e81 172 FRESULT res = f_mount(NULL, _fsid, 0);
el18jgb 18:c600a6545e81 173 return res == 0 ? 0 : -1;
el18jgb 18:c600a6545e81 174 }