STM32H7 SPI DMA not working

[AAnt.1]

STM32H7 SPI DMA not working

Hi. I have stm32H745 nucleo board, in my project i want send data from MOSI via DMA (i did the same on old F4 discovery correctly).

PE_14, SPI4 , DMA2_stream3, DMUX11=84 (for tx spi4)

In project i need to send data (fb[][]) then generated interrupt. For exam for correct work the IRQ_handler inside interrupt function i switched PG_9.

It did not work, dma don't send data, there no switching PG_9 inside handler function.

Could anybody help me ?

Me code bellow

Function for SPI_DMA initialisation:

void SPI_Configuration(void)

{

   SPI_InitTypeDef         SPI_InitStructure;

   DMA_InitTypeDef         DMA_InitStructure;

   GPIO_InitTypeDef        GPIO_InitStructure;

   SPI_HandleTypeDef       SpiHandle;

 //static

      DMA_HandleTypeDef hdma_tx;   

 #define SPIx                            SPI4 

   #define SPIx_MOSI_GPIO_CLK_ENABLE()     __HAL_RCC_GPIOE_CLK_ENABLE()

   #define SPIx_CLK_ENABLE()               __HAL_RCC_SPI4_CLK_ENABLE()

 #define DMAx_CLK_ENABLE()               __HAL_RCC_DMA2_CLK_ENABLE()

   /*##-1- Enable peripherals and GPIO Clocks #################################*/

 /* Enable GPIO TX/RX clock */

 SPIx_MOSI_GPIO_CLK_ENABLE();

 /* Enable SPI1 clock */

 SPIx_CLK_ENABLE();

 /* Enable DMA clock */

 DMAx_CLK_ENABLE();

    // Common configuration for all channels

 GPIO_InitStructure.Pin = GPIO_PIN_14 ;

   GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;

 GPIO_InitStructure.Pull = GPIO_NOPULL;

 GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

 GPIO_InitStructure.Alternate = GPIO_AF5_SPI4;

 HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);

 /*##-3- Configure the DMA ##################################################*/

 /* Configure the DMA handler for Transmission process */

 hdma_tx.Instance                = DMA2_Stream3; // SPI4 maybe?

 hdma_tx.Init.FIFOMode           = DMA_FIFOMODE_DISABLE;

 hdma_tx.Init.FIFOThreshold      = DMA_FIFO_THRESHOLD_FULL;

 hdma_tx.Init.MemBurst           = DMA_MBURST_INC4;

 hdma_tx.Init.PeriphBurst        = DMA_PBURST_INC4;

 hdma_tx.Init.Request            = DMA_REQUEST_SPI4_TX;

 hdma_tx.Init.Direction          = DMA_MEMORY_TO_PERIPH;

 hdma_tx.Init.PeriphInc          = DMA_PINC_DISABLE;

 hdma_tx.Init.MemInc             = DMA_MINC_ENABLE;

 hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;

 hdma_tx.Init.MemDataAlignment   = DMA_MDATAALIGN_BYTE;

 hdma_tx.Init.Mode               = DMA_NORMAL;

 hdma_tx.Init.Priority           = DMA_PRIORITY_LOW;

 HAL_DMA_Init(&hdma_tx);

   /* Associate the initialized DMA handle to the the SPI handle */

   //__HAL_LINKDMA(SPI4, hdmatx, hdma_tx);      // navisho ???

 /*##-1- Configure the SPI peripheral #######################################*/

 /* Set the SPI parameters */

 SpiHandle.Instance              = SPI4;

 SpiHandle.Init.Mode             = SPI_MODE_MASTER;

 SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64; // use 4 for 400 pixels, 2 for 800 pixels

 SpiHandle.Init.Direction        = SPI_DIRECTION_1LINE;

 SpiHandle.Init.CLKPhase         = SPI_PHASE_2EDGE;

 SpiHandle.Init.CLKPolarity      = SPI_POLARITY_LOW;

 SpiHandle.Init.DataSize         = SPI_DATASIZE_8BIT;

 SpiHandle.Init.FirstBit         = SPI_FIRSTBIT_MSB;

 SpiHandle.Init.TIMode           = SPI_TIMODE_DISABLE;

 SpiHandle.Init.CRCCalculation   = SPI_CRCCALCULATION_DISABLE;

 SpiHandle.Init.CRCPolynomial    = 7;

 SpiHandle.Init.CRCLength        = SPI_CRC_LENGTH_8BIT;

 SpiHandle.Init.NSS              = SPI_NSS_SOFT;

 SpiHandle.Init.NSSPMode         = SPI_NSS_PULSE_DISABLE;

 SpiHandle.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE; /* Recommanded setting to avoid glitches */

 HAL_SPI_Init(&SpiHandle);

 /*##-4- Configure the NVIC for DMA #########################################*/

 /* NVIC configuration for DMA transfer complete interrupt (SPI4_TX) */

 HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, 1, 1);

 HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);

 SPI4->CR1 &= ~SPI_CR1_SPE;

 // SPI4->CR2 = 7;

 DMA_STREAM->CR&= ~DMA_SxCR_EN; // clear the EN bit to disable the stream

 DMA_STREAM->PAR = (uint32_t) &(SPI4->TXDR);

   DMA_STREAM->NDTR = VTOTAL;            // set number of bytes to transfer

   DMA_STREAM->M0AR = (u32) &fb[0][0];      // set start of frame buffer

 DMA_STREAM->CR|=DMA_SxCR_CIRC | DMA_SxCR_TCIE;

    DMAMUX1_Channel11->CCR = 84; //SPI4_TX vs DMA2_Stream3;

   DMAMUX1_Channel11->CCR |=DMAMUX_CxCR_EGE ; //| DMAMUX_SPI1_RX_ID;

 //SPI4->IER |= SPI_IER_TXPIE;

 SPI4->CFG1 |= SPI_CFG1_TXDMAEN;

   //SPI4->CR1 |= SPI_CR1_CSTART;   

 SPI4->CR1 |= SPI_CR1_SPE;

 DMA_STREAM->CR|= DMA_SxCR_EN; // set the EN bit to disable the stream

   // DMAMUX1 channels 8 to 15 are connected to DMA2 channels 0 to 7

   // 84 spi4_tx_dma

   // DMA1_Stream_x -> DMAMUX1_Channel_x

 //DMA2_Stream_x -> DMAMUX1_Channel_(x+8)

}

Function for Interrupt

void DMA2_Stream3_IRQHandler(void)

{   

   VIDEO_DMA->LIFCR = DMA_LIFCR_CTCIF3;   // clear the transfer complete interrupt flag

   DMA_STREAM->CR &= ~DMA_SxCR_EN;         // clear the EN bit to disable the stream

   DMA_STREAM->NDTR = VTOTAL;            // reload the number of bytes to send

   HAL_GPIO_TogglePin(GPIOG, GPIO_PIN_9);

}

[Imen.D]

Hello @AAnt.1​ and welcome to the Community :)

Perhaps this FAQ will help: DMA is not working on STM32H7 devices

Check the DMA status for errors.

You can check SPI examples in the STM32CubeH7 MCU package.

Imen

[AAnt.1]

Hi to all! My old code:

https://community.st.com/s/question/0D53W00001atD9zSAE/stm32h7-spi-dma-not-working

I write modernized code - i could get only done function of IRQ_Handler, insite function LED switched, PD9 switched . That means - i can enter inside IRQ_handler and handler work, not stoped inside, but don't have any signal on MOSI SPI PIN .....

Me modernized code

function main.c

 DMA_HandleTypeDef hdma_tx;

   SPI_HandleTypeDef       SpiHandle;

#define TBS0 11

uint8_t TBuf0[TBS0]={0,1,2,3,4,5,6,7,8,9,11};

SPI_Configuration( );

.....

 while (1)

 {

   HAL_DMA_Start_IT(&hdma_tx, *TBuf0,(uint32_t) &(SPI4->TXDR),TBS0);

}

function for SPI_DMA init

#define VIDEO_DMA            DMA2

#define DMA_STREAM              DMA2_Stream3

#define DMA_CHANNEL             DMA_Channel_3

void SPI_Configuration( void ) 

{

   GPIO_InitTypeDef        GPIO_InitStructure;     

// RCC->AHB2ENR |= (RCC_AHB2ENR_D2SRAM1EN | RCC_AHB2ENR_D2SRAM2EN | RCC_AHB2ENR_D2SRAM3EN);  // Enable the SRAM

//   __HAL_RCC_D2SRAM1_CLK_ENABLE();

//   __HAL_RCC_D2SRAM2_CLK_ENABLE();

//   __HAL_RCC_D2SRAM3_CLK_ENABLE();

   #define SPI4_FORCE_RESET()              __HAL_RCC_SPI4_FORCE_RESET()

 #define SPI4_RELEASE_RESET()            __HAL_RCC_SPI4_RELEASE_RESET()

 #define SPIx                            SPI4 

   #define SPIx_MOSI_GPIO_CLK_ENABLE()     __HAL_RCC_GPIOE_CLK_ENABLE()

   #define SPIx_CLK_ENABLE()               __HAL_RCC_SPI4_CLK_ENABLE()

 #define DMAx_CLK_ENABLE()               __HAL_RCC_DMA2_CLK_ENABLE()

   SPI4_FORCE_RESET();

   SPI4_RELEASE_RESET();

      HAL_DMA_DeInit(&hdma_tx);

   // ##-1- Enable peripherals and GPIO Clocks #################################

 // Enable GPIO TX/RX clock

 SPIx_MOSI_GPIO_CLK_ENABLE();

 // Enable SPI1 clock

 SPIx_CLK_ENABLE();

 // Enable DMA clock

 DMAx_CLK_ENABLE();

    // Common configuration for all channels

 GPIO_InitStructure.Pin = GPIO_PIN_14 | GPIO_PIN_12; // PE12 SPI SCK

   GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;

 GPIO_InitStructure.Pull = GPIO_NOPULL;

 GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

 GPIO_InitStructure.Alternate = GPIO_AF5_SPI4;

 HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);

 // ##-3- Configure the DMA

 // Configure the DMA handler for Transmission process

 hdma_tx.Instance                = DMA_STREAM; // SPI4 maybe?

 hdma_tx.Init.FIFOMode           = DMA_FIFOMODE_DISABLE;

 hdma_tx.Init.FIFOThreshold      = DMA_FIFO_THRESHOLD_FULL;

 hdma_tx.Init.MemBurst           = DMA_MBURST_SINGLE;

 hdma_tx.Init.PeriphBurst        = DMA_PBURST_SINGLE;

 hdma_tx.Init.Request            = DMA_REQUEST_SPI4_TX;

 hdma_tx.Init.Direction          = DMA_MEMORY_TO_PERIPH;

 hdma_tx.Init.PeriphInc          = DMA_PINC_DISABLE; 

 hdma_tx.Init.MemInc             = DMA_MINC_ENABLE;  

 hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;

 hdma_tx.Init.MemDataAlignment   = DMA_MDATAALIGN_BYTE;

 hdma_tx.Init.Mode               =  DMA_CIRCULAR; //DMA_NORMAL;  // ????? 

 hdma_tx.Init.Priority           = DMA_PRIORITY_HIGH; // ????

 HAL_DMA_Init(&hdma_tx);

 // ##-1- Configure the SPI peripheral

 // Set the SPI parameters

 SpiHandle.Instance              = SPI4;

 SpiHandle.Init.Mode             = SPI_MODE_MASTER;

 SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16; 

 SpiHandle.Init.Direction        = SPI_DIRECTION_2LINES_TXONLY;

 SpiHandle.Init.CLKPhase         = SPI_PHASE_2EDGE;

 SpiHandle.Init.CLKPolarity      = SPI_POLARITY_LOW;

 SpiHandle.Init.DataSize         = SPI_DATASIZE_8BIT;

 SpiHandle.Init.FirstBit         = SPI_FIRSTBIT_MSB;

 SpiHandle.Init.TIMode           = SPI_TIMODE_DISABLE;

 SpiHandle.Init.CRCCalculation   = SPI_CRCCALCULATION_DISABLE;

 SpiHandle.Init.CRCPolynomial    = 7;

 SpiHandle.Init.CRCLength        = SPI_CRC_LENGTH_8BIT;

 SpiHandle.Init.NSS              = SPI_NSS_SOFT;

 SpiHandle.Init.NSSPMode         = SPI_NSS_PULSE_DISABLE;

 SpiHandle.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE; 

 HAL_SPI_Init(&SpiHandle);

 // ##-4- Configure the NVIC for DMA

 // NVIC configuration for DMA transfer complete interrupt (SPI4_TX)

 HAL_NVIC_SetPriority(DMA_INTERRUPT, 1, 1); //DMA2_Stream3_IRQn

 HAL_NVIC_EnableIRQ(DMA_INTERRUPT);  //  DMA2_Stream3_IRQn

}

Function for INTERRUPT and switching PIN inside

void DMA2_Stream3_IRQHandler(void)

{   

   HAL_DMA_IRQHandler(&hdma_tx);

   HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0); // LD1 blinky

   HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_9); // PD9 blinky

}

If i understand, DMA start to work, because interrupt handler worked, but DMA don'nt send any signal to MOSI PE14 pin.....

Best regards.

[AAnt.1]

Hi @Imen DAHMEN​ 

phanks for interst to my problem, but your topic i have been read in past.

It don't help me.

I use two core M7 and M4. M4 core (D2 domain) i use for transmit data trouth MOSI PE_14 DMA_2

M7 core i don't use with DMA.

When transaction will finish i need to generate interrupt - i didn't saw switching PG_9 inside interrupt function. DMA transaction don't start.

M4 core i use with SRAM1, SRAM2, SRAM3. In Keil i wrote IRAM1 addres 0x10 000 000 size 0x48000 - it don't help me. And i probed addres 0x30 000 000 same size - zero rezult.

I wrote my code upper, may be i got mistake with registers for SPI or DMA start ?