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/FATFileHandle.cpp@38:7077795dbf81, 2017-01-22 (annotated)
- Committer:
- mimi3
- Date:
- Sun Jan 22 23:13:11 2017 +0900
- Revision:
- 38:7077795dbf81
- Parent:
- 34:b065d97cb70f
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 | #include "ff.h" |
mimi3 | 10:b48d3ace55db | 23 | #include "ffconf.h" |
mimi3 | 10:b48d3ace55db | 24 | #include "mbed_debug.h" |
mimi3 | 10:b48d3ace55db | 25 | |
mimi3 | 10:b48d3ace55db | 26 | #include "FATFileHandle.h" |
mimi3 | 10:b48d3ace55db | 27 | |
mimi3 | 10:b48d3ace55db | 28 | FATFileHandle::FATFileHandle(FIL fh) { |
mimi3 | 10:b48d3ace55db | 29 | _fh = fh; |
mimi3 | 10:b48d3ace55db | 30 | } |
mimi3 | 10:b48d3ace55db | 31 | |
mimi3 | 10:b48d3ace55db | 32 | int FATFileHandle::close() { |
mimi3 | 10:b48d3ace55db | 33 | int retval = f_close(&_fh); |
mimi3 | 10:b48d3ace55db | 34 | delete this; |
mimi3 | 10:b48d3ace55db | 35 | return retval; |
mimi3 | 10:b48d3ace55db | 36 | } |
mimi3 | 10:b48d3ace55db | 37 | |
mimi3 | 10:b48d3ace55db | 38 | ssize_t FATFileHandle::write(const void* buffer, size_t length) { |
dinau | 34:b065d97cb70f | 39 | #if !_FS_READONLY |
mimi3 | 10:b48d3ace55db | 40 | UINT n; |
mimi3 | 10:b48d3ace55db | 41 | FRESULT res = f_write(&_fh, buffer, length, &n); |
mimi3 | 10:b48d3ace55db | 42 | if (res) { |
mimi3 | 10:b48d3ace55db | 43 | debug_if(FFS_DBG, "f_write() failed: %d", res); |
mimi3 | 10:b48d3ace55db | 44 | return -1; |
mimi3 | 10:b48d3ace55db | 45 | } |
mimi3 | 10:b48d3ace55db | 46 | return n; |
dinau | 34:b065d97cb70f | 47 | #else |
dinau | 34:b065d97cb70f | 48 | return -1; |
dinau | 34:b065d97cb70f | 49 | #endif |
mimi3 | 10:b48d3ace55db | 50 | } |
mimi3 | 10:b48d3ace55db | 51 | |
mimi3 | 10:b48d3ace55db | 52 | ssize_t FATFileHandle::read(void* buffer, size_t length) { |
mimi3 | 10:b48d3ace55db | 53 | debug_if(FFS_DBG, "read(%d)\n", length); |
mimi3 | 10:b48d3ace55db | 54 | UINT n; |
mimi3 | 10:b48d3ace55db | 55 | FRESULT res = f_read(&_fh, buffer, length, &n); |
mimi3 | 10:b48d3ace55db | 56 | if (res) { |
mimi3 | 10:b48d3ace55db | 57 | debug_if(FFS_DBG, "f_read() failed: %d\n", res); |
mimi3 | 10:b48d3ace55db | 58 | return -1; |
mimi3 | 10:b48d3ace55db | 59 | } |
mimi3 | 10:b48d3ace55db | 60 | return n; |
mimi3 | 10:b48d3ace55db | 61 | } |
mimi3 | 10:b48d3ace55db | 62 | |
mimi3 | 10:b48d3ace55db | 63 | int FATFileHandle::isatty() { |
mimi3 | 10:b48d3ace55db | 64 | return 0; |
mimi3 | 10:b48d3ace55db | 65 | } |
mimi3 | 10:b48d3ace55db | 66 | |
mimi3 | 10:b48d3ace55db | 67 | off_t FATFileHandle::lseek(off_t position, int whence) { |
mimi3 | 10:b48d3ace55db | 68 | if (whence == SEEK_END) { |
mimi3 | 10:b48d3ace55db | 69 | position += _fh.fsize; |
mimi3 | 10:b48d3ace55db | 70 | } else if(whence==SEEK_CUR) { |
mimi3 | 10:b48d3ace55db | 71 | position += _fh.fptr; |
mimi3 | 10:b48d3ace55db | 72 | } |
mimi3 | 10:b48d3ace55db | 73 | FRESULT res = f_lseek(&_fh, position); |
mimi3 | 10:b48d3ace55db | 74 | if (res) { |
mimi3 | 10:b48d3ace55db | 75 | debug_if(FFS_DBG, "lseek failed: %d\n", res); |
mimi3 | 10:b48d3ace55db | 76 | return -1; |
mimi3 | 10:b48d3ace55db | 77 | } else { |
mimi3 | 10:b48d3ace55db | 78 | debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr); |
mimi3 | 10:b48d3ace55db | 79 | return _fh.fptr; |
mimi3 | 10:b48d3ace55db | 80 | } |
mimi3 | 10:b48d3ace55db | 81 | } |
mimi3 | 10:b48d3ace55db | 82 | |
mimi3 | 10:b48d3ace55db | 83 | int FATFileHandle::fsync() { |
dinau | 34:b065d97cb70f | 84 | #if !_FS_READONLY |
mimi3 | 10:b48d3ace55db | 85 | FRESULT res = f_sync(&_fh); |
mimi3 | 10:b48d3ace55db | 86 | if (res) { |
mimi3 | 10:b48d3ace55db | 87 | debug_if(FFS_DBG, "f_sync() failed: %d\n", res); |
mimi3 | 10:b48d3ace55db | 88 | return -1; |
mimi3 | 10:b48d3ace55db | 89 | } |
mimi3 | 10:b48d3ace55db | 90 | return 0; |
dinau | 34:b065d97cb70f | 91 | #else |
dinau | 34:b065d97cb70f | 92 | return -1; |
dinau | 34:b065d97cb70f | 93 | #endif |
mimi3 | 10:b48d3ace55db | 94 | } |
mimi3 | 10:b48d3ace55db | 95 | |
mimi3 | 10:b48d3ace55db | 96 | off_t FATFileHandle::flen() { |
mimi3 | 10:b48d3ace55db | 97 | return _fh.fsize; |
mimi3 | 10:b48d3ace55db | 98 | } |