first 2016/02 SDFileSystemDMA inherited from Official SDFileSystem.
Dependents: SDFileSystemDMA-test DmdFullRGB_0_1
Fork of SDFileSystemDMA by
SDFileSystemDMA is enhanced SDFileSystem library for STM32 micros by using DMA functionality.
Max read transfer rate reaches over 2MByte/sec at 24MHz SPI clock if enough read buffer size is set.
Even though minimum read buffer size (512Byte) is set, read transfer rate will reach over 1MByte/sec at 24MHz SPI Clock.
( but depends on the ability of each SD card)
Test program is here.
https://developer.mbed.org/users/mimi3/code/SDFileSystemDMA-test/
Supported SPI port is shown below table.
(v): Verified. It works well.
(w): Probably it will work well. (not tested)
(c): Only compiled. (not tested)
(f): Over flash.
(r): Only read mode. (when _FS_READONLY==1)
(u) Under construction
(z): Dose not work.
Caution
If your board has SRAM less than or equal to 8KB, the buffer size must be set to 512 Bytes.
Supported Boards:
Cortex-M0
Board | SRAM | SPI1 | SPI2 | SPI3 |
---|---|---|---|---|
NUCLEO-F030R8 | 8KB | (v) | ||
DISCO-F051R8 | 8KB | (w) | ||
4KB | (f) | |||
NUCLEO-F042K6 | 6KB | (r) | ||
NUCLEO-F070RB | 16KB | (w) | ||
NUCLEO-F072RB | 16KB | (w) | ||
NUCLEO-F091RC | 32KB | (c) |
Cortex-L0
Board | SRAM | SPI1 | SPI2 | SPI3 |
---|---|---|---|---|
DISCO-L053C8 | 8KB | (c) | ||
NUCLEO-L053R8 | 8KB | (c) | ||
NUCLEO-L073RZ | 20KB | (c) |
Cortex-M3
Board | SRAM | SPI1 | SPI2 | SPI3 |
---|---|---|---|---|
DISCO-F100RB | 8KB | (v) | (v) | - |
BLUEPILL-F103CB | 20KB | (w) | (w) | - |
NUCLEO-F103RB | 20KB | (v) | (v) | - |
NUCLEO-L152RE | 80KB | (v) | (w) | - |
MOTE-L152RC | 32KB | (w) | (w) | - |
Cortex-M4
F3
Board | SRAM | SPI1 | SPI2 | SPI3 |
---|---|---|---|---|
DISCO-F303VC | 40KB | - | (v) | (v) |
NUCLEO-F303RE | 64KB | (w) | (w) | (w) |
NUCLEO-F302R8 | 16KB | - | - | (c) |
NUCLEO-F303K8 | 12KB | (c) | - | - |
DISCO-F334C8 | 12KB | (c) | - | - |
NUCLEO-F334R8 | 12KB | (c) | - | - |
F4
Board | SPI1 | SPI2 | SPI3 |
---|---|---|---|
ELMO-F411RE | (w) | - | (w) |
MTS-MDOT-F411RE | (u) | - | (u) |
MTS-DRAGONFLY-F411RE | (w) | - | (w) |
NUCLEO-F411RE | (v) | - | (v) |
NUCLEO-F401RE | (w) | - | (w) |
MTS-MDOT-F405RG | (u) | - | (u) |
NUCLEO-F410RB | (c) | - | (c) |
NUCLEO-F446RE | (c) | - | (c) |
NUCLEO-F429ZI | (c) | - | (c) |
B96B-F446VE | (c) | - | (c) |
NUCLEO-F446ZE | (c) | - | (c) |
DISCO-F429ZI | (u) | - | (u) |
DISCO-F469NI | (c) | - | (c) |
Information
This library is set to use "short file name" in SDFileSystemDMA/FATFileSystem/ChaN/ffconf.h . ( _USE_LFN=0)
You can change this option to _USE_LFN=1 .
FATFileSystem/FATFileSystem.cpp
- Committer:
- mimi3
- Date:
- 2017-01-22
- Revision:
- 38:7077795dbf81
- Parent:
- 34:b065d97cb70f
File content as of revision 38:7077795dbf81:
/* 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" 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) { debug_if(FFS_DBG, "FATFileSystem(%s)\n", n); for(int i=0; i<_VOLUMES; i++) { if(_ffs[i] == 0) { _ffs[i] = this; _fsid[0] = '0' + i; _fsid[1] = '\0'; debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%s]\n", getName(), _fsid); f_mount(&_fs, _fsid, 0); return; } } error("Couldn't create %s in FATFileSystem::FATFileSystem\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) { debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%s]\n", name, getName(), _fsid); char n[64]; sprintf(n, "%s:/%s", _fsid, name); /* POSIX flags -> FatFS open mode */ BYTE openmode; #if _FS_READONLY==1 openmode = FA_READ; #else 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; } } #endif FIL fh; FRESULT res = f_open(&fh, n, openmode); if (res) { debug_if(FFS_DBG, "f_open('w') failed: %d\n", res); return NULL; } #if !_FS_READONLY if (flags & O_APPEND) { f_lseek(&fh, fh.fsize); } #endif return new FATFileHandle(fh); } int FATFileSystem::remove(const char *filename) { #if !_FS_READONLY FRESULT res = f_unlink(filename); if (res) { debug_if(FFS_DBG, "f_unlink() failed: %d\n", res); return -1; } return 0; #else return -1; #endif } int FATFileSystem::rename(const char *oldname, const char *newname) { #if !_FS_READONLY FRESULT res = f_rename(oldname, newname); if (res) { debug_if(FFS_DBG, "f_rename() failed: %d\n", res); return -1; } return 0; #else return -1; #endif } int FATFileSystem::format() { #if !_FS_READONLY FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster) if (res) { debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res); return -1; } return 0; #else return -1; #endif } 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) { #if !_FS_READONLY FRESULT res = f_mkdir(name); return res == 0 ? 0 : -1; #else return -1; #endif } 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; }