mi mi / SDFileSystemDMA Featured

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/

/media/uploads/mimi3/sdfilesystemdma-speed-test3-read-buffer-512byte.png

/media/uploads/mimi3/sdfilesystemdma-speed-test-buffer-vs-spi-clock-nucleo-f411re-96mhz.png

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

BoardSRAMSPI1SPI2SPI3
NUCLEO-F030R88KB(v)
DISCO-F051R88KB(w)
NUCLEO-F031K64KB(f)
NUCLEO-F042K66KB(r)
NUCLEO-F070RB16KB(w)
NUCLEO-F072RB16KB(w)
NUCLEO-F091RC32KB(c)

Cortex-L0

BoardSRAMSPI1SPI2SPI3
DISCO-L053C88KB(c)
NUCLEO-L053R88KB(c)
NUCLEO-L073RZ20KB(c)

Cortex-M3

BoardSRAMSPI1SPI2SPI3
DISCO-F100RB8KB(v)(v)-
BLUEPILL-F103CB20KB(w)(w)-
NUCLEO-F103RB20KB(v)(v)-
NUCLEO-L152RE80KB(v)(w)-
MOTE-L152RC32KB(w)(w)-

Cortex-M4
F3

BoardSRAMSPI1SPI2SPI3
DISCO-F303VC40KB-(v)(v)
NUCLEO-F303RE64KB(w)(w)(w)
NUCLEO-F302R816KB--(c)
NUCLEO-F303K812KB(c)--
DISCO-F334C812KB(c)--
NUCLEO-F334R812KB(c)--

F4

BoardSPI1SPI2SPI3
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 .

spi_dma/spi_dma_common.c@24:92bf692d61e2, 2016-02-17 (annotated)

Committer:
mimi3
Date:
Wed Feb 17 23:23:16 2016 +0900
Revision:
24:92bf692d61e2
Parent:
21:41129109d6ab 
Enable: F3: SPI1, SPI2,SPI3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mimi3 2:0e871408d51b 1 #include "spi_dma.h"
mimi3 21:41129109d6ab 2 #include "PeripheralPins.h"
mimi3 2:0e871408d51b 3
mimi3 21:41129109d6ab 4 DMA_HandleTypeDef hdma_spi_tx;
mimi3 21:41129109d6ab 5 DMA_HandleTypeDef hdma_spi_rx;
mimi3 21:41129109d6ab 6 SPI_HandleTypeDef SpiHandle;
mimi3 5:809e2eece945 7
mimi3 2:0e871408d51b 8 static void spi_dma_error_handler(void)
mimi3 2:0e871408d51b 9 {
mimi3 2:0e871408d51b 10 while(1)
mimi3 2:0e871408d51b 11 {
mimi3 2:0e871408d51b 12 /* infinite loop */
mimi3 2:0e871408d51b 13 }
mimi3 2:0e871408d51b 14 }
mimi3 2:0e871408d51b 15
mimi3 2:0e871408d51b 16 static void spi_dma_start( SPI_TypeDef *spi, uint8_t *txbuff, uint8_t *rxbuff, uint16_t count)
mimi3 2:0e871408d51b 17 {
mimi3 21:41129109d6ab 18 (void)spi;
mimi3 21:41129109d6ab 19 if( HAL_SPI_TransmitReceive_DMA( &SpiHandle, (uint8_t *)txbuff, (uint8_t *)rxbuff, count) != HAL_OK) {
mimi3 2:0e871408d51b 20 spi_dma_error_handler();
mimi3 2:0e871408d51b 21 }
mimi3 2:0e871408d51b 22 }
mimi3 2:0e871408d51b 23
mimi3 2:0e871408d51b 24 static void spi_dma_wait_end( SPI_TypeDef *spi )
mimi3 2:0e871408d51b 25 {
mimi3 21:41129109d6ab 26 (void)spi;
mimi3 21:41129109d6ab 27 while (HAL_SPI_GetState( &SpiHandle ) != HAL_SPI_STATE_READY) {
mimi3 2:0e871408d51b 28 /* just wait */
mimi3 2:0e871408d51b 29 }
mimi3 2:0e871408d51b 30 }
mimi3 2:0e871408d51b 31
mimi3 5:809e2eece945 32 static void spi_dma_deinit( SPI_TypeDef *spi)
mimi3 5:809e2eece945 33 {
mimi3 21:41129109d6ab 34 (void)spi;
mimi3 21:41129109d6ab 35 HAL_DMA_DeInit( &hdma_spi_tx);
mimi3 21:41129109d6ab 36 HAL_DMA_DeInit( &hdma_spi_rx);
mimi3 2:0e871408d51b 37 }
mimi3 18:1b1a0e68008a 38
mimi3 21:41129109d6ab 39 SPI_TypeDef *spi_get_id( PinName mosi, PinName miso, PinName sclk, PinName ssel) {
mimi3 21:41129109d6ab 40 // Determine the SPI to use
mimi3 21:41129109d6ab 41 SPIName spi_mosi = (SPIName)pinmap_peripheral(mosi, PinMap_SPI_MOSI);
mimi3 21:41129109d6ab 42 SPIName spi_miso = (SPIName)pinmap_peripheral(miso, PinMap_SPI_MISO);
mimi3 21:41129109d6ab 43 SPIName spi_sclk = (SPIName)pinmap_peripheral(sclk, PinMap_SPI_SCLK);
mimi3 21:41129109d6ab 44 SPIName spi_ssel = (SPIName)pinmap_peripheral(ssel, PinMap_SPI_SSEL);
mimi3 18:1b1a0e68008a 45
mimi3 21:41129109d6ab 46 SPIName spi_data = (SPIName)pinmap_merge(spi_mosi, spi_miso);
mimi3 21:41129109d6ab 47 SPIName spi_cntl = (SPIName)pinmap_merge(spi_sclk, spi_ssel);
mimi3 21:41129109d6ab 48
mimi3 21:41129109d6ab 49 return (SPI_TypeDef *) ( (SPIName)pinmap_merge(spi_data, spi_cntl) );
mimi3 21:41129109d6ab 50 }
mimi3 21:41129109d6ab 51
mimi3 21:41129109d6ab 52 void spi_dma_init( SPI_TypeDef *spi ) {
mimi3 21:41129109d6ab 53 spi_dma_irq_setup( spi );
mimi3 21:41129109d6ab 54 spi_dma_get_info( spi );
mimi3 21:41129109d6ab 55 }
mimi3 2:0e871408d51b 56
mimi3 2:0e871408d51b 57 void __spi_dma_read_write( SPI_TypeDef *spi, uint8_t *txbuff, uint8_t *rxbuff, uint16_t count, uint8_t mode)
mimi3 2:0e871408d51b 58 {
mimi3 2:0e871408d51b 59 spi_dma_handle_setup( spi, mode );
mimi3 2:0e871408d51b 60 spi_dma_start( spi, txbuff, rxbuff, count );
mimi3 2:0e871408d51b 61 spi_dma_wait_end( spi );
mimi3 17:e6d3b7ed3799 62 spi_dma_deinit(spi);
mimi3 2:0e871408d51b 63 }
mimi3 2:0e871408d51b 64