mi mi
first 2016/02 SDFileSystemDMA inherited from Official SDFileSystem.
Dependents: SDFileSystemDMA-test DmdFullRGB_0_1
Fork of
SDFileSystemDMA
by 
mi mi
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/FATFileHandle.h@38:7077795dbf81, 2017-01-22 (annotated)
- Committer:
- mimi3
- Date:
- Sun Jan 22 23:13:11 2017 +0900
- Revision:
- 38:7077795dbf81
- Parent:
- 10:b48d3ace55db
change: table.md
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mimi3 | 10:b48d3ace55db | 1 | /* mbed Microcontroller Library |
| mimi3 | 10:b48d3ace55db | 2 | * Copyright (c) 2006-2012 ARM Limited |
| mimi3 | 10:b48d3ace55db | 3 | * |
| mimi3 | 10:b48d3ace55db | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| mimi3 | 10:b48d3ace55db | 5 | * of this software and associated documentation files (the "Software"), to deal |
| mimi3 | 10:b48d3ace55db | 6 | * in the Software without restriction, including without limitation the rights |
| mimi3 | 10:b48d3ace55db | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| mimi3 | 10:b48d3ace55db | 8 | * copies of the Software, and to permit persons to whom the Software is |
| mimi3 | 10:b48d3ace55db | 9 | * furnished to do so, subject to the following conditions: |
| mimi3 | 10:b48d3ace55db | 10 | * |
| mimi3 | 10:b48d3ace55db | 11 | * The above copyright notice and this permission notice shall be included in |
| mimi3 | 10:b48d3ace55db | 12 | * all copies or substantial portions of the Software. |
| mimi3 | 10:b48d3ace55db | 13 | * |
| mimi3 | 10:b48d3ace55db | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| mimi3 | 10:b48d3ace55db | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| mimi3 | 10:b48d3ace55db | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| mimi3 | 10:b48d3ace55db | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| mimi3 | 10:b48d3ace55db | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| mimi3 | 10:b48d3ace55db | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| mimi3 | 10:b48d3ace55db | 20 | * SOFTWARE. |
| mimi3 | 10:b48d3ace55db | 21 | */ |
| mimi3 | 10:b48d3ace55db | 22 | #ifndef MBED_FATFILEHANDLE_H |
| mimi3 | 10:b48d3ace55db | 23 | #define MBED_FATFILEHANDLE_H |
| mimi3 | 10:b48d3ace55db | 24 | |
| mimi3 | 10:b48d3ace55db | 25 | #include "FileHandle.h" |
| mimi3 | 10:b48d3ace55db | 26 | |
| mimi3 | 10:b48d3ace55db | 27 | using namespace mbed; |
| mimi3 | 10:b48d3ace55db | 28 | |
| mimi3 | 10:b48d3ace55db | 29 | class FATFileHandle : public FileHandle { |
| mimi3 | 10:b48d3ace55db | 30 | public: |
| mimi3 | 10:b48d3ace55db | 31 | |
| mimi3 | 10:b48d3ace55db | 32 | FATFileHandle(FIL fh); |
| mimi3 | 10:b48d3ace55db | 33 | virtual int close(); |
| mimi3 | 10:b48d3ace55db | 34 | virtual ssize_t write(const void* buffer, size_t length); |
| mimi3 | 10:b48d3ace55db | 35 | virtual ssize_t read(void* buffer, size_t length); |
| mimi3 | 10:b48d3ace55db | 36 | virtual int isatty(); |
| mimi3 | 10:b48d3ace55db | 37 | virtual off_t lseek(off_t position, int whence); |
| mimi3 | 10:b48d3ace55db | 38 | virtual int fsync(); |
| mimi3 | 10:b48d3ace55db | 39 | virtual off_t flen(); |
| mimi3 | 10:b48d3ace55db | 40 | |
| mimi3 | 10:b48d3ace55db | 41 | protected: |
| mimi3 | 10:b48d3ace55db | 42 | |
| mimi3 | 10:b48d3ace55db | 43 | FIL _fh; |
| mimi3 | 10:b48d3ace55db | 44 | |
| mimi3 | 10:b48d3ace55db | 45 | }; |
| mimi3 | 10:b48d3ace55db | 46 | |
| mimi3 | 10:b48d3ace55db | 47 | #endif |