(DA) Internet of Things and Smart Electronics- ELE3006M2122 / Mbed 2 deprecated Final_Project_V19_DLeaming_25574043

Final tidy of code following installation of new sensor, more comments added prior to submission

Dependencies:   mbed

SD_Card/FATFileSystem/FATFileSystem.cpp@14:3e9991fe64e5, 2022-01-21 (annotated)

Committer:
legstar85
Date:
Fri Jan 21 22:33:32 2022 +0000
Revision:
14:3e9991fe64e5
Addition of new menu option, start of coding for writing Temp data to SD card

Who changed what in which revision?

UserRevisionLine numberNew contents of line
legstar85 14:3e9991fe64e5 1 /* mbed Microcontroller Library
legstar85 14:3e9991fe64e5 2 * Copyright (c) 2006-2012 ARM Limited
legstar85 14:3e9991fe64e5 3 *
legstar85 14:3e9991fe64e5 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
legstar85 14:3e9991fe64e5 5 * of this software and associated documentation files (the "Software"), to deal
legstar85 14:3e9991fe64e5 6 * in the Software without restriction, including without limitation the rights
legstar85 14:3e9991fe64e5 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
legstar85 14:3e9991fe64e5 8 * copies of the Software, and to permit persons to whom the Software is
legstar85 14:3e9991fe64e5 9 * furnished to do so, subject to the following conditions:
legstar85 14:3e9991fe64e5 10 *
legstar85 14:3e9991fe64e5 11 * The above copyright notice and this permission notice shall be included in
legstar85 14:3e9991fe64e5 12 * all copies or substantial portions of the Software.
legstar85 14:3e9991fe64e5 13 *
legstar85 14:3e9991fe64e5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
legstar85 14:3e9991fe64e5 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
legstar85 14:3e9991fe64e5 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
legstar85 14:3e9991fe64e5 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
legstar85 14:3e9991fe64e5 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
legstar85 14:3e9991fe64e5 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
legstar85 14:3e9991fe64e5 20 * SOFTWARE.
legstar85 14:3e9991fe64e5 21 */
legstar85 14:3e9991fe64e5 22 #include "mbed.h"
legstar85 14:3e9991fe64e5 23
legstar85 14:3e9991fe64e5 24 #include "ffconf.h"
legstar85 14:3e9991fe64e5 25 #include "mbed_debug.h"
legstar85 14:3e9991fe64e5 26
legstar85 14:3e9991fe64e5 27 #include "FATFileSystem.h"
legstar85 14:3e9991fe64e5 28 #include "FATFileHandle.h"
legstar85 14:3e9991fe64e5 29 #include "FATDirHandle.h"
legstar85 14:3e9991fe64e5 30
legstar85 14:3e9991fe64e5 31 DWORD get_fattime(void) {
legstar85 14:3e9991fe64e5 32 time_t rawtime;
legstar85 14:3e9991fe64e5 33 time(&rawtime);
legstar85 14:3e9991fe64e5 34 struct tm *ptm = localtime(&rawtime);
legstar85 14:3e9991fe64e5 35 return (DWORD)(ptm->tm_year - 80) << 25
legstar85 14:3e9991fe64e5 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
legstar85 14:3e9991fe64e5 37 | (DWORD)(ptm->tm_mday ) << 16
legstar85 14:3e9991fe64e5 38 | (DWORD)(ptm->tm_hour ) << 11
legstar85 14:3e9991fe64e5 39 | (DWORD)(ptm->tm_min ) << 5
legstar85 14:3e9991fe64e5 40 | (DWORD)(ptm->tm_sec/2 );
legstar85 14:3e9991fe64e5 41 }
legstar85 14:3e9991fe64e5 42
legstar85 14:3e9991fe64e5 43 FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
legstar85 14:3e9991fe64e5 44
legstar85 14:3e9991fe64e5 45 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
legstar85 14:3e9991fe64e5 46 debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
legstar85 14:3e9991fe64e5 47 for(int i=0; i<_VOLUMES; i++) {
legstar85 14:3e9991fe64e5 48 if(_ffs[i] == 0) {
legstar85 14:3e9991fe64e5 49 _ffs[i] = this;
legstar85 14:3e9991fe64e5 50 _fsid[0] = '0' + i;
legstar85 14:3e9991fe64e5 51 _fsid[1] = '\0';
legstar85 14:3e9991fe64e5 52 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%s]\n", getName(), _fsid);
legstar85 14:3e9991fe64e5 53 f_mount(&_fs, _fsid, 0);
legstar85 14:3e9991fe64e5 54 return;
legstar85 14:3e9991fe64e5 55 }
legstar85 14:3e9991fe64e5 56 }
legstar85 14:3e9991fe64e5 57 error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
legstar85 14:3e9991fe64e5 58 }
legstar85 14:3e9991fe64e5 59
legstar85 14:3e9991fe64e5 60 FATFileSystem::~FATFileSystem() {
legstar85 14:3e9991fe64e5 61 for (int i=0; i<_VOLUMES; i++) {
legstar85 14:3e9991fe64e5 62 if (_ffs[i] == this) {
legstar85 14:3e9991fe64e5 63 _ffs[i] = 0;
legstar85 14:3e9991fe64e5 64 f_mount(NULL, _fsid, 0);
legstar85 14:3e9991fe64e5 65 }
legstar85 14:3e9991fe64e5 66 }
legstar85 14:3e9991fe64e5 67 }
legstar85 14:3e9991fe64e5 68
legstar85 14:3e9991fe64e5 69 FileHandle *FATFileSystem::open(const char* name, int flags) {
legstar85 14:3e9991fe64e5 70 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%s]\n", name, getName(), _fsid);
legstar85 14:3e9991fe64e5 71 char n[64];
legstar85 14:3e9991fe64e5 72 sprintf(n, "%s:/%s", _fsid, name);
legstar85 14:3e9991fe64e5 73
legstar85 14:3e9991fe64e5 74 /* POSIX flags -> FatFS open mode */
legstar85 14:3e9991fe64e5 75 BYTE openmode;
legstar85 14:3e9991fe64e5 76 if (flags & O_RDWR) {
legstar85 14:3e9991fe64e5 77 openmode = FA_READ|FA_WRITE;
legstar85 14:3e9991fe64e5 78 } else if(flags & O_WRONLY) {
legstar85 14:3e9991fe64e5 79 openmode = FA_WRITE;
legstar85 14:3e9991fe64e5 80 } else {
legstar85 14:3e9991fe64e5 81 openmode = FA_READ;
legstar85 14:3e9991fe64e5 82 }
legstar85 14:3e9991fe64e5 83 if(flags & O_CREAT) {
legstar85 14:3e9991fe64e5 84 if(flags & O_TRUNC) {
legstar85 14:3e9991fe64e5 85 openmode |= FA_CREATE_ALWAYS;
legstar85 14:3e9991fe64e5 86 } else {
legstar85 14:3e9991fe64e5 87 openmode |= FA_OPEN_ALWAYS;
legstar85 14:3e9991fe64e5 88 }
legstar85 14:3e9991fe64e5 89 }
legstar85 14:3e9991fe64e5 90
legstar85 14:3e9991fe64e5 91 FIL fh;
legstar85 14:3e9991fe64e5 92 FRESULT res = f_open(&fh, n, openmode);
legstar85 14:3e9991fe64e5 93 if (res) {
legstar85 14:3e9991fe64e5 94 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
legstar85 14:3e9991fe64e5 95 return NULL;
legstar85 14:3e9991fe64e5 96 }
legstar85 14:3e9991fe64e5 97 if (flags & O_APPEND) {
legstar85 14:3e9991fe64e5 98 f_lseek(&fh, fh.fsize);
legstar85 14:3e9991fe64e5 99 }
legstar85 14:3e9991fe64e5 100 return new FATFileHandle(fh);
legstar85 14:3e9991fe64e5 101 }
legstar85 14:3e9991fe64e5 102
legstar85 14:3e9991fe64e5 103 int FATFileSystem::open(FileHandle **file, const char *name, int flags) {
legstar85 14:3e9991fe64e5 104 FileHandle *temp = open(name, flags);
legstar85 14:3e9991fe64e5 105 if (!temp) {
legstar85 14:3e9991fe64e5 106 return -1;
legstar85 14:3e9991fe64e5 107 }
legstar85 14:3e9991fe64e5 108
legstar85 14:3e9991fe64e5 109 *file = temp;
legstar85 14:3e9991fe64e5 110 return 0;
legstar85 14:3e9991fe64e5 111 }
legstar85 14:3e9991fe64e5 112
legstar85 14:3e9991fe64e5 113 int FATFileSystem::remove(const char *filename) {
legstar85 14:3e9991fe64e5 114 FRESULT res = f_unlink(filename);
legstar85 14:3e9991fe64e5 115 if (res) {
legstar85 14:3e9991fe64e5 116 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
legstar85 14:3e9991fe64e5 117 return -1;
legstar85 14:3e9991fe64e5 118 }
legstar85 14:3e9991fe64e5 119 return 0;
legstar85 14:3e9991fe64e5 120 }
legstar85 14:3e9991fe64e5 121
legstar85 14:3e9991fe64e5 122 int FATFileSystem::rename(const char *oldname, const char *newname) {
legstar85 14:3e9991fe64e5 123 FRESULT res = f_rename(oldname, newname);
legstar85 14:3e9991fe64e5 124 if (res) {
legstar85 14:3e9991fe64e5 125 debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
legstar85 14:3e9991fe64e5 126 return -1;
legstar85 14:3e9991fe64e5 127 }
legstar85 14:3e9991fe64e5 128 return 0;
legstar85 14:3e9991fe64e5 129 }
legstar85 14:3e9991fe64e5 130
legstar85 14:3e9991fe64e5 131 int FATFileSystem::format() {
legstar85 14:3e9991fe64e5 132 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
legstar85 14:3e9991fe64e5 133 if (res) {
legstar85 14:3e9991fe64e5 134 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
legstar85 14:3e9991fe64e5 135 return -1;
legstar85 14:3e9991fe64e5 136 }
legstar85 14:3e9991fe64e5 137 return 0;
legstar85 14:3e9991fe64e5 138 }
legstar85 14:3e9991fe64e5 139
legstar85 14:3e9991fe64e5 140 DirHandle *FATFileSystem::opendir(const char *name) {
legstar85 14:3e9991fe64e5 141 FATFS_DIR dir;
legstar85 14:3e9991fe64e5 142 FRESULT res = f_opendir(&dir, name);
legstar85 14:3e9991fe64e5 143 if (res != 0) {
legstar85 14:3e9991fe64e5 144 return NULL;
legstar85 14:3e9991fe64e5 145 }
legstar85 14:3e9991fe64e5 146 return new FATDirHandle(dir);
legstar85 14:3e9991fe64e5 147 }
legstar85 14:3e9991fe64e5 148
legstar85 14:3e9991fe64e5 149 int FATFileSystem::open(DirHandle **dir, const char *name) {
legstar85 14:3e9991fe64e5 150 DirHandle *temp = opendir(name);
legstar85 14:3e9991fe64e5 151 if (!temp) {
legstar85 14:3e9991fe64e5 152 return -1;
legstar85 14:3e9991fe64e5 153 }
legstar85 14:3e9991fe64e5 154
legstar85 14:3e9991fe64e5 155 *dir = temp;
legstar85 14:3e9991fe64e5 156 return 0;
legstar85 14:3e9991fe64e5 157 }
legstar85 14:3e9991fe64e5 158
legstar85 14:3e9991fe64e5 159 int FATFileSystem::mkdir(const char *name, mode_t mode) {
legstar85 14:3e9991fe64e5 160 FRESULT res = f_mkdir(name);
legstar85 14:3e9991fe64e5 161 return res == 0 ? 0 : -1;
legstar85 14:3e9991fe64e5 162 }
legstar85 14:3e9991fe64e5 163
legstar85 14:3e9991fe64e5 164 int FATFileSystem::mount() {
legstar85 14:3e9991fe64e5 165 FRESULT res = f_mount(&_fs, _fsid, 1);
legstar85 14:3e9991fe64e5 166 return res == 0 ? 0 : -1;
legstar85 14:3e9991fe64e5 167 }
legstar85 14:3e9991fe64e5 168
legstar85 14:3e9991fe64e5 169 int FATFileSystem::unmount() {
legstar85 14:3e9991fe64e5 170 if (disk_sync())
legstar85 14:3e9991fe64e5 171 return -1;
legstar85 14:3e9991fe64e5 172 FRESULT res = f_mount(NULL, _fsid, 0);
legstar85 14:3e9991fe64e5 173 return res == 0 ? 0 : -1;
legstar85 14:3e9991fe64e5 174 }
legstar85 14:3e9991fe64e5 175