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@2:0e871408d51b, 2016-02-13 (annotated)

Committer:
mimi3
Date:
Sat Feb 13 18:50:11 2016 +0900
Revision:
2:0e871408d51b
Child:
5:809e2eece945
split files for each model

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mimi3 2:0e871408d51b 1 #include "spi_dma.h"
mimi3 2:0e871408d51b 2
mimi3 2:0e871408d51b 3 DMA_HandleTypeDef hdma_spi1_tx;
mimi3 2:0e871408d51b 4 DMA_HandleTypeDef hdma_spi1_rx;
mimi3 2:0e871408d51b 5 SPI_HandleTypeDef Spi1Handle;
mimi3 2:0e871408d51b 6 #if 0
mimi3 2:0e871408d51b 7 SPI_HandleTypeDef Spi2Handle;
mimi3 2:0e871408d51b 8 #endif
mimi3 2:0e871408d51b 9
mimi3 2:0e871408d51b 10
mimi3 2:0e871408d51b 11 static void spi_dma_error_handler(void)
mimi3 2:0e871408d51b 12 {
mimi3 2:0e871408d51b 13 while(1)
mimi3 2:0e871408d51b 14 {
mimi3 2:0e871408d51b 15 /* infinite loop */
mimi3 2:0e871408d51b 16 }
mimi3 2:0e871408d51b 17 }
mimi3 2:0e871408d51b 18
mimi3 2:0e871408d51b 19 static void spi_dma_start( SPI_TypeDef *spi, uint8_t *txbuff, uint8_t *rxbuff, uint16_t count)
mimi3 2:0e871408d51b 20 {
mimi3 2:0e871408d51b 21 SPI_HandleTypeDef *hspi;
mimi3 2:0e871408d51b 22 if( spi == SPI1 ) {
mimi3 2:0e871408d51b 23 hspi = &Spi1Handle;
mimi3 2:0e871408d51b 24 }
mimi3 2:0e871408d51b 25 #if 0
mimi3 2:0e871408d51b 26 else{
mimi3 2:0e871408d51b 27 hspi = &Spi2Handle;
mimi3 2:0e871408d51b 28 }
mimi3 2:0e871408d51b 29 #endif
mimi3 2:0e871408d51b 30 if( HAL_SPI_TransmitReceive_DMA( hspi, (uint8_t *)txbuff, (uint8_t *)rxbuff, count) != HAL_OK) {
mimi3 2:0e871408d51b 31 spi_dma_error_handler();
mimi3 2:0e871408d51b 32 }
mimi3 2:0e871408d51b 33 }
mimi3 2:0e871408d51b 34
mimi3 2:0e871408d51b 35 static void spi_dma_wait_end( SPI_TypeDef *spi )
mimi3 2:0e871408d51b 36 {
mimi3 2:0e871408d51b 37 SPI_HandleTypeDef *hspi;
mimi3 2:0e871408d51b 38 if( spi == SPI1 ) {
mimi3 2:0e871408d51b 39 hspi = &Spi1Handle;
mimi3 2:0e871408d51b 40 }
mimi3 2:0e871408d51b 41 #if 0
mimi3 2:0e871408d51b 42 else{
mimi3 2:0e871408d51b 43 hspi = &Spi2Handle;
mimi3 2:0e871408d51b 44 }
mimi3 2:0e871408d51b 45 #endif
mimi3 2:0e871408d51b 46 while (HAL_SPI_GetState( hspi ) != HAL_SPI_STATE_READY) {
mimi3 2:0e871408d51b 47 /* just wait */
mimi3 2:0e871408d51b 48 }
mimi3 2:0e871408d51b 49 }
mimi3 2:0e871408d51b 50
mimi3 2:0e871408d51b 51 /* SPI1 init function */
mimi3 2:0e871408d51b 52 static uint8_t spi_dma_inited = 0;
mimi3 2:0e871408d51b 53 static void spi_dma_init( SPI_TypeDef *spi)
mimi3 2:0e871408d51b 54 {
mimi3 2:0e871408d51b 55 DMA_HandleTypeDef *phdma_rx,*phdma_tx;
mimi3 2:0e871408d51b 56
mimi3 2:0e871408d51b 57 spi_dma_irq_setup( spi );
mimi3 2:0e871408d51b 58
mimi3 2:0e871408d51b 59 if( spi == SPI1 ) {
mimi3 2:0e871408d51b 60 phdma_tx = &hdma_spi1_tx;
mimi3 2:0e871408d51b 61 phdma_rx = &hdma_spi1_rx;
mimi3 2:0e871408d51b 62 }
mimi3 2:0e871408d51b 63 #if 0
mimi3 2:0e871408d51b 64 else{
mimi3 2:0e871408d51b 65 }
mimi3 2:0e871408d51b 66 #endif
mimi3 2:0e871408d51b 67 /* At first, execute DeInit for reset DMA */
mimi3 2:0e871408d51b 68 HAL_DMA_DeInit( phdma_tx );
mimi3 2:0e871408d51b 69 HAL_DMA_DeInit( phdma_rx );
mimi3 2:0e871408d51b 70 }
mimi3 2:0e871408d51b 71
mimi3 2:0e871408d51b 72 void __spi_dma_read_write( SPI_TypeDef *spi, uint8_t *txbuff, uint8_t *rxbuff, uint16_t count, uint8_t mode)
mimi3 2:0e871408d51b 73 {
mimi3 2:0e871408d51b 74 if( spi_dma_inited == 0 ) {
mimi3 2:0e871408d51b 75 spi_dma_inited = 1;
mimi3 2:0e871408d51b 76 spi_dma_init( spi );
mimi3 2:0e871408d51b 77 }
mimi3 2:0e871408d51b 78 spi_dma_get_info( spi );
mimi3 2:0e871408d51b 79 spi_dma_handle_setup( spi, mode );
mimi3 2:0e871408d51b 80 spi_dma_start( spi, txbuff, rxbuff, count );
mimi3 2:0e871408d51b 81 spi_dma_wait_end( spi );
mimi3 2:0e871408d51b 82 }
mimi3 2:0e871408d51b 83