Geo Electronics "Geo Counter" / Mbed 2 deprecated GEO_SHOW2ME_F411RE_CDY

CDY version that shares functionality with Counter

Dependencies:   SDFileSystem_HelloWorld mbed FATFileSystem

SDFileSystem/FATFileSystem/FATFileSystem.cpp@0:aa13e1c335cd, 2018-11-04 (annotated)

Committer:
Charles David Young
Date:
Sun Nov 04 18:44:51 2018 -0700
Revision:
0:aa13e1c335cd
create new repo for show2me

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Charles David Young 0:aa13e1c335cd 1 /* mbed Microcontroller Library
Charles David Young 0:aa13e1c335cd 2 * Copyright (c) 2006-2012 ARM Limited
Charles David Young 0:aa13e1c335cd 3 *
Charles David Young 0:aa13e1c335cd 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
Charles David Young 0:aa13e1c335cd 5 * of this software and associated documentation files (the "Software"), to deal
Charles David Young 0:aa13e1c335cd 6 * in the Software without restriction, including without limitation the rights
Charles David Young 0:aa13e1c335cd 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Charles David Young 0:aa13e1c335cd 8 * copies of the Software, and to permit persons to whom the Software is
Charles David Young 0:aa13e1c335cd 9 * furnished to do so, subject to the following conditions:
Charles David Young 0:aa13e1c335cd 10 *
Charles David Young 0:aa13e1c335cd 11 * The above copyright notice and this permission notice shall be included in
Charles David Young 0:aa13e1c335cd 12 * all copies or substantial portions of the Software.
Charles David Young 0:aa13e1c335cd 13 *
Charles David Young 0:aa13e1c335cd 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Charles David Young 0:aa13e1c335cd 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Charles David Young 0:aa13e1c335cd 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Charles David Young 0:aa13e1c335cd 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Charles David Young 0:aa13e1c335cd 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Charles David Young 0:aa13e1c335cd 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
Charles David Young 0:aa13e1c335cd 20 * SOFTWARE.
Charles David Young 0:aa13e1c335cd 21 */
Charles David Young 0:aa13e1c335cd 22 #include "mbed.h"
Charles David Young 0:aa13e1c335cd 23
Charles David Young 0:aa13e1c335cd 24 #include "ffconf.h"
Charles David Young 0:aa13e1c335cd 25 #include "mbed_debug.h"
Charles David Young 0:aa13e1c335cd 26
Charles David Young 0:aa13e1c335cd 27 #include "FATFileSystem.h"
Charles David Young 0:aa13e1c335cd 28 #include "FATFileHandle.h"
Charles David Young 0:aa13e1c335cd 29 #include "FATDirHandle.h"
Charles David Young 0:aa13e1c335cd 30
Charles David Young 0:aa13e1c335cd 31 DWORD get_fattime(void) {
Charles David Young 0:aa13e1c335cd 32 time_t rawtime;
Charles David Young 0:aa13e1c335cd 33 time(&rawtime);
Charles David Young 0:aa13e1c335cd 34 struct tm *ptm = localtime(&rawtime);
Charles David Young 0:aa13e1c335cd 35 return (DWORD)(ptm->tm_year - 80) << 25
Charles David Young 0:aa13e1c335cd 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
Charles David Young 0:aa13e1c335cd 37 | (DWORD)(ptm->tm_mday ) << 16
Charles David Young 0:aa13e1c335cd 38 | (DWORD)(ptm->tm_hour ) << 11
Charles David Young 0:aa13e1c335cd 39 | (DWORD)(ptm->tm_min ) << 5
Charles David Young 0:aa13e1c335cd 40 | (DWORD)(ptm->tm_sec/2 );
Charles David Young 0:aa13e1c335cd 41 }
Charles David Young 0:aa13e1c335cd 42
Charles David Young 0:aa13e1c335cd 43 FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0};
Charles David Young 0:aa13e1c335cd 44
Charles David Young 0:aa13e1c335cd 45 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
Charles David Young 0:aa13e1c335cd 46 debug_if(FFS_DBG, "FATFileSystem(%s)\n", n);
Charles David Young 0:aa13e1c335cd 47 for(int i=0; i<_VOLUMES; i++) {
Charles David Young 0:aa13e1c335cd 48 if(_ffs[i] == 0) {
Charles David Young 0:aa13e1c335cd 49 _ffs[i] = this;
Charles David Young 0:aa13e1c335cd 50 _fsid[0] = '0' + i;
Charles David Young 0:aa13e1c335cd 51 _fsid[1] = '\0';
Charles David Young 0:aa13e1c335cd 52 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%s]\n", getName(), _fsid);
Charles David Young 0:aa13e1c335cd 53 f_mount(&_fs, _fsid, 0);
Charles David Young 0:aa13e1c335cd 54 return;
Charles David Young 0:aa13e1c335cd 55 }
Charles David Young 0:aa13e1c335cd 56 }
Charles David Young 0:aa13e1c335cd 57 error("Couldn't create %s in FATFileSystem::FATFileSystem\n", n);
Charles David Young 0:aa13e1c335cd 58 }
Charles David Young 0:aa13e1c335cd 59
Charles David Young 0:aa13e1c335cd 60 FATFileSystem::~FATFileSystem() {
Charles David Young 0:aa13e1c335cd 61 for (int i=0; i<_VOLUMES; i++) {
Charles David Young 0:aa13e1c335cd 62 if (_ffs[i] == this) {
Charles David Young 0:aa13e1c335cd 63 _ffs[i] = 0;
Charles David Young 0:aa13e1c335cd 64 f_mount(NULL, _fsid, 0);
Charles David Young 0:aa13e1c335cd 65 }
Charles David Young 0:aa13e1c335cd 66 }
Charles David Young 0:aa13e1c335cd 67 }
Charles David Young 0:aa13e1c335cd 68
Charles David Young 0:aa13e1c335cd 69 FileHandle *FATFileSystem::open(const char* name, int flags) {
Charles David Young 0:aa13e1c335cd 70 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%s]\n", name, getName(), _fsid);
Charles David Young 0:aa13e1c335cd 71 char n[64];
Charles David Young 0:aa13e1c335cd 72 sprintf(n, "%s:/%s", _fsid, name);
Charles David Young 0:aa13e1c335cd 73
Charles David Young 0:aa13e1c335cd 74 /* POSIX flags -> FatFS open mode */
Charles David Young 0:aa13e1c335cd 75 BYTE openmode;
Charles David Young 0:aa13e1c335cd 76 if (flags & O_RDWR) {
Charles David Young 0:aa13e1c335cd 77 openmode = FA_READ|FA_WRITE;
Charles David Young 0:aa13e1c335cd 78 } else if(flags & O_WRONLY) {
Charles David Young 0:aa13e1c335cd 79 openmode = FA_WRITE;
Charles David Young 0:aa13e1c335cd 80 } else {
Charles David Young 0:aa13e1c335cd 81 openmode = FA_READ;
Charles David Young 0:aa13e1c335cd 82 }
Charles David Young 0:aa13e1c335cd 83 if(flags & O_CREAT) {
Charles David Young 0:aa13e1c335cd 84 if(flags & O_TRUNC) {
Charles David Young 0:aa13e1c335cd 85 openmode |= FA_CREATE_ALWAYS;
Charles David Young 0:aa13e1c335cd 86 } else {
Charles David Young 0:aa13e1c335cd 87 openmode |= FA_OPEN_ALWAYS;
Charles David Young 0:aa13e1c335cd 88 }
Charles David Young 0:aa13e1c335cd 89 }
Charles David Young 0:aa13e1c335cd 90
Charles David Young 0:aa13e1c335cd 91 FIL fh;
Charles David Young 0:aa13e1c335cd 92 FRESULT res = f_open(&fh, n, openmode);
Charles David Young 0:aa13e1c335cd 93 if (res) {
Charles David Young 0:aa13e1c335cd 94 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
Charles David Young 0:aa13e1c335cd 95 return NULL;
Charles David Young 0:aa13e1c335cd 96 }
Charles David Young 0:aa13e1c335cd 97 if (flags & O_APPEND) {
Charles David Young 0:aa13e1c335cd 98 f_lseek(&fh, fh.fsize);
Charles David Young 0:aa13e1c335cd 99 }
Charles David Young 0:aa13e1c335cd 100 return new FATFileHandle(fh);
Charles David Young 0:aa13e1c335cd 101 }
Charles David Young 0:aa13e1c335cd 102
Charles David Young 0:aa13e1c335cd 103 int FATFileSystem::remove(const char *filename) {
Charles David Young 0:aa13e1c335cd 104 FRESULT res = f_unlink(filename);
Charles David Young 0:aa13e1c335cd 105 if (res) {
Charles David Young 0:aa13e1c335cd 106 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
Charles David Young 0:aa13e1c335cd 107 return -1;
Charles David Young 0:aa13e1c335cd 108 }
Charles David Young 0:aa13e1c335cd 109 return 0;
Charles David Young 0:aa13e1c335cd 110 }
Charles David Young 0:aa13e1c335cd 111
Charles David Young 0:aa13e1c335cd 112 int FATFileSystem::rename(const char *oldname, const char *newname) {
Charles David Young 0:aa13e1c335cd 113 FRESULT res = f_rename(oldname, newname);
Charles David Young 0:aa13e1c335cd 114 if (res) {
Charles David Young 0:aa13e1c335cd 115 debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
Charles David Young 0:aa13e1c335cd 116 return -1;
Charles David Young 0:aa13e1c335cd 117 }
Charles David Young 0:aa13e1c335cd 118 return 0;
Charles David Young 0:aa13e1c335cd 119 }
Charles David Young 0:aa13e1c335cd 120
Charles David Young 0:aa13e1c335cd 121 int FATFileSystem::format() {
Charles David Young 0:aa13e1c335cd 122 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
Charles David Young 0:aa13e1c335cd 123 if (res) {
Charles David Young 0:aa13e1c335cd 124 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
Charles David Young 0:aa13e1c335cd 125 return -1;
Charles David Young 0:aa13e1c335cd 126 }
Charles David Young 0:aa13e1c335cd 127 return 0;
Charles David Young 0:aa13e1c335cd 128 }
Charles David Young 0:aa13e1c335cd 129
Charles David Young 0:aa13e1c335cd 130 DirHandle *FATFileSystem::opendir(const char *name) {
Charles David Young 0:aa13e1c335cd 131 FATFS_DIR dir;
Charles David Young 0:aa13e1c335cd 132 FRESULT res = f_opendir(&dir, name);
Charles David Young 0:aa13e1c335cd 133 if (res != 0) {
Charles David Young 0:aa13e1c335cd 134 return NULL;
Charles David Young 0:aa13e1c335cd 135 }
Charles David Young 0:aa13e1c335cd 136 return new FATDirHandle(dir);
Charles David Young 0:aa13e1c335cd 137 }
Charles David Young 0:aa13e1c335cd 138
Charles David Young 0:aa13e1c335cd 139 int FATFileSystem::mkdir(const char *name, mode_t mode) {
Charles David Young 0:aa13e1c335cd 140 FRESULT res = f_mkdir(name);
Charles David Young 0:aa13e1c335cd 141 return res == 0 ? 0 : -1;
Charles David Young 0:aa13e1c335cd 142 }
Charles David Young 0:aa13e1c335cd 143
Charles David Young 0:aa13e1c335cd 144 int FATFileSystem::mount() {
Charles David Young 0:aa13e1c335cd 145 FRESULT res = f_mount(&_fs, _fsid, 1);
Charles David Young 0:aa13e1c335cd 146 return res == 0 ? 0 : -1;
Charles David Young 0:aa13e1c335cd 147 }
Charles David Young 0:aa13e1c335cd 148
Charles David Young 0:aa13e1c335cd 149 int FATFileSystem::unmount() {
Charles David Young 0:aa13e1c335cd 150 if (disk_sync())
Charles David Young 0:aa13e1c335cd 151 return -1;
Charles David Young 0:aa13e1c335cd 152 FRESULT res = f_mount(NULL, _fsid, 0);
Charles David Young 0:aa13e1c335cd 153 return res == 0 ? 0 : -1;
Charles David Young 0:aa13e1c335cd 154 }