Revised to support ability to have both SD and USB drives mounted.
Dependents: Multi-FileSystem Multi-FileSystem
Fork of FATFileSystem by
Diff: FATFileSystem.cpp
- Revision:
- 9:4000fad3b21f
- Parent:
- 8:f08059355141
- Child:
- 10:e58f6254f8a2
--- a/FATFileSystem.cpp Sat Mar 12 23:58:38 2016 +0000 +++ b/FATFileSystem.cpp Sun Mar 13 00:58:52 2016 +0000 @@ -1,207 +1,211 @@ -/* mbed Microcontroller Library - * Copyright (c) 2006-2012 ARM Limited - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ -#include "mbed.h" - -#include "ffconf.h" -#include "mbed_debug.h" - -#include "FATFileSystem.h" -#include "FATFileHandle.h" -#include "FATDirHandle.h" - - -//#define DEBUG "FtFS" -// ... -// INFO("Stuff to show %d", var); // new-line is automatically appended -// -#if (defined(DEBUG) && !defined(TARGET_LPC11U24)) -#include "mbed.h" -#define INFO(x, ...) std::printf("[INF %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); -#define WARN(x, ...) std::printf("[WRN %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); -#define ERR(x, ...) std::printf("[ERR %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); -static void HexDump(const char * title, const uint8_t * p, int count) -{ - int i; - char buf[100] = "0000: "; - - if (*title) - INFO("%s", title); - for (i=0; i<count; ) { - sprintf(buf + strlen(buf), "%02X ", *(p+i)); - if ((++i & 0x0F) == 0x00) { - INFO("%s", buf); - if (i < count) - sprintf(buf, "%04X: ", i); - else - buf[0] = '\0'; - } - } - if (strlen(buf)) - INFO("%s", buf); -} -#else -#define INFO(x, ...) -#define WARN(x, ...) -#define ERR(x, ...) -#define HexDump(a, b, c) -#endif - -DWORD get_fattime(void) { - time_t rawtime; - time(&rawtime); - struct tm *ptm = localtime(&rawtime); - return (DWORD)(ptm->tm_year - 80) << 25 - | (DWORD)(ptm->tm_mon + 1 ) << 21 - | (DWORD)(ptm->tm_mday ) << 16 - | (DWORD)(ptm->tm_hour ) << 11 - | (DWORD)(ptm->tm_min ) << 5 - | (DWORD)(ptm->tm_sec/2 ); -} - -FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0}; - -FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) { - INFO("FATFileSystem(%s)", n); - for(int i=0; i<_VOLUMES; i++) { - if(_ffs[i] == this) // 2nd attempt to mount the same drive - return; - if(_ffs[i] == 0) { - _ffs[i] = this; - _fsid[0] = '0' + i; - _fsid[1] = ':'; - _fsid[2] = '\0'; - INFO("Mounting [%s] on ffs drive [%s]", _name, _fsid); - f_mount(&_fs, _fsid, 0); - for (int d=0; d<_VOLUMES; d++) { - INFO(" _ffs[%d] = %p", d, _ffs[d]); - } - return; - } - } - error("Couldn't create %s in FATFileSystem::FATFileSystem\r\n", n); -} - -FATFileSystem::~FATFileSystem() { - for (int i=0; i<_VOLUMES; i++) { - if (_ffs[i] == this) { - _ffs[i] = 0; - f_mount(NULL, _fsid, 0); - } - } -} - -FileHandle *FATFileSystem::open(const char* name, int flags) { - INFO("open(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); - char n[64]; - sprintf(n, "%s/%s", _fsid, name); - INFO(" :: open(%s)", n); - - /* POSIX flags -> FatFS open mode */ - BYTE openmode; - if (flags & O_RDWR) { - openmode = FA_READ|FA_WRITE; - } else if(flags & O_WRONLY) { - openmode = FA_WRITE; - } else { - openmode = FA_READ; - } - if(flags & O_CREAT) { - if(flags & O_TRUNC) { - openmode |= FA_CREATE_ALWAYS; - } else { - openmode |= FA_OPEN_ALWAYS; - } - } - - FIL fh; - FRESULT res = f_open(&fh, n, openmode); - if (res) { - INFO("f_open('w') failed: %d", res); - return NULL; - } - if (flags & O_APPEND) { - f_lseek(&fh, fh.fsize); - } - return new FATFileHandle(fh); -} - -int FATFileSystem::remove(const char *name) { - INFO("remove(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); - char n[64]; - sprintf(n, "%s/%s", _fsid, name); - INFO(" :: remove(%s)", n); - FRESULT res = f_unlink(n); - if (res) { - INFO("f_unlink() failed: %d", res); - return -1; - } - return 0; -} - -int FATFileSystem::rename(const char *oldname, const char *newname) { - char o[64], n[64]; - sprintf(o, "%s/%s", _fsid, oldname); - sprintf(n, "%s/%s", _fsid, newname); - INFO(" :: rename(%s,%s)", o, n); - FRESULT res = f_rename(oldname, newname); - if (res) { - INFO("f_rename() failed: %d", res); - return -1; - } - return 0; -} - -int FATFileSystem::format() { - FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster) - if (res) { - INFO("f_mkfs() failed: %d", res); - return -1; - } - return 0; -} - -DirHandle *FATFileSystem::opendir(const char *name) { - FATFS_DIR dir; - FRESULT res = f_opendir(&dir, name); - if (res != 0) { - return NULL; - } - return new FATDirHandle(dir); -} - -int FATFileSystem::mkdir(const char *name, mode_t mode) { - FRESULT res = f_mkdir(name); - return res == 0 ? 0 : -1; -} - -int FATFileSystem::mount() { - FRESULT res = f_mount(&_fs, _fsid, 1); - return res == 0 ? 0 : -1; -} - -int FATFileSystem::unmount() { - if (disk_sync()) - return -1; - FRESULT res = f_mount(NULL, _fsid, 0); - return res == 0 ? 0 : -1; -} +/* mbed Microcontroller Library + * Copyright (c) 2006-2012 ARM Limited + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "mbed.h" + +#include "ffconf.h" +#include "mbed_debug.h" + +#include "FATFileSystem.h" +#include "FATFileHandle.h" +#include "FATDirHandle.h" + + +//#define DEBUG "FtFS" +// ... +// INFO("Stuff to show %d", var); // new-line is automatically appended +// +#if (defined(DEBUG) && !defined(TARGET_LPC11U24)) +#include "mbed.h" +#define INFO(x, ...) std::printf("[INF %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); +#define WARN(x, ...) std::printf("[WRN %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); +#define ERR(x, ...) std::printf("[ERR %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__); +static void HexDump(const char * title, const uint8_t * p, int count) +{ + int i; + char buf[100] = "0000: "; + + if (*title) + INFO("%s", title); + for (i=0; i<count; ) { + sprintf(buf + strlen(buf), "%02X ", *(p+i)); + if ((++i & 0x0F) == 0x00) { + INFO("%s", buf); + if (i < count) + sprintf(buf, "%04X: ", i); + else + buf[0] = '\0'; + } + } + if (strlen(buf)) + INFO("%s", buf); +} +#else +#define INFO(x, ...) +#define WARN(x, ...) +#define ERR(x, ...) +#define HexDump(a, b, c) +#endif + +DWORD get_fattime(void) { + time_t rawtime; + time(&rawtime); + struct tm *ptm = localtime(&rawtime); + return (DWORD)(ptm->tm_year - 80) << 25 + | (DWORD)(ptm->tm_mon + 1 ) << 21 + | (DWORD)(ptm->tm_mday ) << 16 + | (DWORD)(ptm->tm_hour ) << 11 + | (DWORD)(ptm->tm_min ) << 5 + | (DWORD)(ptm->tm_sec/2 ); +} + +FATFileSystem *FATFileSystem::_ffs[_VOLUMES] = {0}; + +FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) { + INFO("FATFileSystem(%s)", n); + for(int i=0; i<_VOLUMES; i++) { + if(_ffs[i] == this) // 2nd attempt to mount the same drive + return; + if(_ffs[i] == 0) { + _ffs[i] = this; + _fsid[0] = '0' + i; + _fsid[1] = ':'; + _fsid[2] = '\0'; + INFO("Mounting [%s] on ffs drive [%s]", _name, _fsid); + f_mount(&_fs, _fsid, 0); + for (int d=0; d<_VOLUMES; d++) { + INFO(" _ffs[%d] = %p", d, _ffs[d]); + } + return; + } + } + error("Couldn't create %s in FATFileSystem::FATFileSystem\r\n", n); +} +FATFileSystem::~FATFileSystem() { + for (int i=0; i<_VOLUMES; i++) { + if (_ffs[i] == this) { + _ffs[i] = 0; + f_mount(NULL, _fsid, 0); + } + } +} + +FileHandle *FATFileSystem::open(const char* name, int flags) { + INFO("open(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); + char n[_MAX_LFN]; + sprintf(n, "%s/%s", _fsid, name); + INFO(" :: open(%s)", n); + + /* POSIX flags -> FatFS open mode */ + BYTE openmode; + if (flags & O_RDWR) { + openmode = FA_READ|FA_WRITE; + } else if(flags & O_WRONLY) { + openmode = FA_WRITE; + } else { + openmode = FA_READ; + } + if(flags & O_CREAT) { + if(flags & O_TRUNC) { + openmode |= FA_CREATE_ALWAYS; + } else { + openmode |= FA_OPEN_ALWAYS; + } + } + + FIL fh; + FRESULT res = f_open(&fh, n, openmode); + if (res) { + INFO("f_open('w') failed: %d", res); + return NULL; + } + if (flags & O_APPEND) { + f_lseek(&fh, fh.fsize); + } + return new FATFileHandle(fh); +} + +int FATFileSystem::remove(const char *name) { + INFO("remove(%s) on filesystem [%s], drv [%s]", name, _name, _fsid); + char n[_MAX_LFN]; + sprintf(n, "%s/%s", _fsid, name); + INFO(" :: remove(%s)", n); + FRESULT res = f_unlink(n); + if (res) { + INFO("f_unlink() failed: %d", res); + return -1; + } + return 0; +} + +int FATFileSystem::rename(const char *oldname, const char *newname) { + char o[_MAX_LFN], n[_MAX_LFN]; + sprintf(o, "%s/%s", _fsid, oldname); + sprintf(n, "%s/%s", _fsid, newname); + INFO(" :: rename(%s,%s)", o, n); + FRESULT res = f_rename(oldname, newname); + if (res) { + INFO("f_rename() failed: %d", res); + return -1; + } + return 0; +} + +int FATFileSystem::format() { + FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster) + if (res) { + INFO("f_mkfs() failed: %d", res); + return -1; + } + return 0; +} + +DirHandle *FATFileSystem::opendir(const char *name) { + FATFS_DIR dir; + char n[_MAX_LFN]; + sprintf(n, "%s/%s", _fsid, name); + FRESULT res = f_opendir(&dir, n); + if (res != 0) { + return NULL; + } + return new FATDirHandle(dir); +} + +int FATFileSystem::mkdir(const char *name, mode_t mode) { + char n[_MAX_LFN]; + sprintf(n, "%s/%s", _fsid, name); + FRESULT res = f_mkdir(n); + return res == 0 ? 0 : -1; +} + +int FATFileSystem::mount() { + FRESULT res = f_mount(&_fs, _fsid, 1); + return res == 0 ? 0 : -1; +} + +int FATFileSystem::unmount() { + if (disk_sync()) + return -1; + FRESULT res = f_mount(NULL, _fsid, 0); + return res == 0 ? 0 : -1; +} +