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HI,

I was able to configure the I2C by using I2C_HandleTypeDef hi2c1; in the I2C initialization functions that were defined in stm32746g_discovery.c/h

I2Cx_MspInit(&hi2c1);

 I2Cx_Init(&hi2c1);

I also want to call the initializations for SPI2 in a similar way, but I don't see any SPI2 initialization functions in in the stm32746g_discovery.c/h. The pins that need to be configured in the STM32F746G board are PI1 for SCLK, PB14 for MISO, PB15 for MOSI and PI3 for Chip Select. I do see some functions in  ..\ThirParty\......  \ stm32f7xx_hal_spi.h (See code snipped below) . My hspi handle initialization calls these functions below .

/* Initialization/de-initialization functions  ********************************/
HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi);
HAL_StatusTypeDef HAL_SPI_DeInit(SPI_HandleTypeDef *hspi);
void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi);
void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi);

I tried to copy from CubeMx generated SPI2 initialization code into stm32746g_discovery.c/h.  Even though this compiles, it does not seem to drive the SCL and MOSI pins. In this initialization the HAL_Spi_Init() function is being called and from there the HAL_SPI_MspInit() gets called to configure the gpios, but I don't see any activity on the GPIOs. Could it be that the incorrect pins are being configured?  How would one configure the SPI2 to be driven on the PI1 for SCLK, PB14 for MISO, PB15 for MOSI ?

This is the section of code I copied in the stm32746g_discovery.c:

void MX_SPI2_Init(void)
{

  /* USER CODE BEGIN SPI2_Init 0 */

  /* USER CODE END SPI2_Init 0 */

  /* USER CODE BEGIN SPI2_Init 1 */

  /* USER CODE END SPI2_Init 1 */
  /* SPI2 parameter configuration*/
  
  hspi2.Instance = SPI2;
  hspi2.Init.Mode = SPI_MODE_MASTER;
  hspi2.Init.Direction = SPI_DIRECTION_2LINES;
  hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi2.Init.NSS = SPI_NSS_SOFT;
  hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
  hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi2.Init.CRCPolynomial = 7;
  hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
  if (HAL_SPI_Init(&hspi2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN SPI2_Init 2 */

  /* USER CODE END SPI2_Init 2 */

}

 

By the way, here is the code in stm32f7xx_hal_msp.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file         stm32f7xx_hal_msp.c
  * @brief        This file provides code for the MSP Initialization
  *               and de-Initialization codes.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal_msp.h"
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */
//extern DMA_HandleTypeDef hdma_adc3;

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */

/* USER CODE END TD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */

/* USER CODE END Define */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */

/* USER CODE END Macro */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */

/* USER CODE END ExternalFunctions */

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */
// Armen Begine 




// Armen ended
/**
* @brief TIM_Base MSP Initialization
* This function configures the hardware resources used in this example
* @param htim_base: TIM_Base handle pointer
* @retval None
*/
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
{
  if(htim_base->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspInit 0 */

  /* USER CODE END TIM1_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_TIM1_CLK_ENABLE();
  /* USER CODE BEGIN TIM1_MspInit 1 */

  /* USER CODE END TIM1_MspInit 1 */
  }
  else if(htim_base->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspInit 0 */

  /* USER CODE END TIM2_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_TIM2_CLK_ENABLE();
  /* USER CODE BEGIN TIM2_MspInit 1 */

  /* USER CODE END TIM2_MspInit 1 */
  }
  else if(htim_base->Instance==TIM5)
  {
  /* USER CODE BEGIN TIM5_MspInit 0 */

  /* USER CODE END TIM5_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_TIM5_CLK_ENABLE();
  /* USER CODE BEGIN TIM5_MspInit 1 */

  /* USER CODE END TIM5_MspInit 1 */
  }
  else if(htim_base->Instance==TIM12)
  {
  /* USER CODE BEGIN TIM12_MspInit 0 */

  /* USER CODE END TIM12_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_TIM12_CLK_ENABLE();
  /* USER CODE BEGIN TIM12_MspInit 1 */

  /* USER CODE END TIM12_MspInit 1 */
  }

}

void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(htim->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspPostInit 0 */

  /* USER CODE END TIM1_MspPostInit 0 */
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM1 GPIO Configuration
    PA8     ------> TIM1_CH1
    */
    GPIO_InitStruct.Pin = GPIO_PIN_8;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM1_MspPostInit 1 */

  /* USER CODE END TIM1_MspPostInit 1 */
  }
  else if(htim->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspPostInit 0 */

  /* USER CODE END TIM2_MspPostInit 0 */

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM2 GPIO Configuration
    PA15     ------> TIM2_CH1
    */
    GPIO_InitStruct.Pin = GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM2_MspPostInit 1 */

  /* USER CODE END TIM2_MspPostInit 1 */
  }
  else if(htim->Instance==TIM5)
  {
  /* USER CODE BEGIN TIM5_MspPostInit 0 */

  /* USER CODE END TIM5_MspPostInit 0 */

    __HAL_RCC_GPIOI_CLK_ENABLE();
    /**TIM5 GPIO Configuration
    PI0     ------> TIM5_CH4
    */
    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF2_TIM5;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM5_MspPostInit 1 */

  /* USER CODE END TIM5_MspPostInit 1 */
  }
  else if(htim->Instance==TIM12)
  {
  /* USER CODE BEGIN TIM12_MspPostInit 0 */

  /* USER CODE END TIM12_MspPostInit 0 */

    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**TIM12 GPIO Configuration
    PB15     ------> TIM12_CH2
    */
    GPIO_InitStruct.Pin = GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF9_TIM12;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM12_MspPostInit 1 */

  /* USER CODE END TIM12_MspPostInit 1 */
  }

}
/**
* @brief TIM_Base MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param htim_base: TIM_Base handle pointer
* @retval None
*/
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* htim_base)
{
  if(htim_base->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspDeInit 0 */

  /* USER CODE END TIM1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM1_CLK_DISABLE();
  /* USER CODE BEGIN TIM1_MspDeInit 1 */

  /* USER CODE END TIM1_MspDeInit 1 */
  }
  else if(htim_base->Instance==TIM2)
  {
  /* USER CODE BEGIN TIM2_MspDeInit 0 */

  /* USER CODE END TIM2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM2_CLK_DISABLE();
  /* USER CODE BEGIN TIM2_MspDeInit 1 */

  /* USER CODE END TIM2_MspDeInit 1 */
  }
  else if(htim_base->Instance==TIM5)
  {
  /* USER CODE BEGIN TIM5_MspDeInit 0 */

  /* USER CODE END TIM5_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM5_CLK_DISABLE();
  /* USER CODE BEGIN TIM5_MspDeInit 1 */

  /* USER CODE END TIM5_MspDeInit 1 */
  }
  else if(htim_base->Instance==TIM12)
  {
  /* USER CODE BEGIN TIM12_MspDeInit 0 */

  /* USER CODE END TIM12_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM12_CLK_DISABLE();
  /* USER CODE BEGIN TIM12_MspDeInit 1 */

  /* USER CODE END TIM12_MspDeInit 1 */
  }

}


/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

 

 

How does Embedded Wizard suggest to setup the pin outs for SPI2 interface, is it in stm32f7xx_hal_msp.c ?

 

Thanks,

MMD 

1 Answer

0 votes
by

Hi MMD,

From a technical perspective the SPI configuration respectively the HAL_MSP setup is not a part of Embedded Wizard. Therefore I Kindly would like to forward you with this question to the ST Community. Probably this will be a better forum to ask this question.

Best regards,

Tim

by

Hi Tim,

I was able to get the SPI interface mapped to the proper GPIOs on the STM32f746G Discovery board. I had to copy the gpio pin out from the CubeMx generated code in stm32f7xx_hal_msp.c and copied it under the EW's ../ThirdParty/.../Drivers  directory. include stm32f7xx_hal_spi.c and the  stm32f7xx_hal_msp.c in the MakeFile then used the make command to compile and link everything together. You just have to run an initialization function in the DeviceDriver.c and it is good to go.

This is also true for any GPIOs that need to be initialized, since I had to use a GPIO PI3 for and external chip select for the SPI interface.

 

Thanks,

mmd

snipped from DeviceDriver.c

  void DeviceDriver_Initialize( void )
{
  /*
     You can implement here the necessary code to initialize your particular
     hardware, to open needed devices, to open communication channels, etc.
  */

  /* configure LED */
  EwBspInOutInitLed();

  EwBspInOutInitArducam();

  /* Configure interrupt for hardware button */
  EwBspInOutInitButton( HardButtonIsrCallback );

  /* Add some Function to Initialize the ADC1 */

   

   EwBspadc_ar_InitAdc();

  /* --------- Timer 1 ----------- */
   EwBsptim__Timer1_Init( );
   EwBsptim_Timer1_Setup( );

   /* --------- Timer 2 ----------- */
   EwBsptim__Timer2_Init( );
   EwBsptim_Timer2_Setup( );

   /* --------- Timer 5 ----------- */
   EwBsptim__Timer5_Init( );
   EwBsptim_Timer5_Setup( );

   /* --------- Timer 12 ----------- */
   //EwBsptim__Timer12_Init( );
  // EwBsptim_Timer12_Setup( );

   /* --------- SPI2 ----------- */
   EwBspSpi2_ar_Init( );

   /* --------- I2C ----------- */
   EwBspI2c1_ar_Init();

copied this from cubeMx main.c to EW's  stm32746g_discovery.c. Below is a snippet of the code for spi.

/**
  * @brief SPI2 Initialization Function
  * @param None
  * @retval None
  */
void MX_SPI2_Init(void)
{

  /* USER CODE BEGIN SPI2_Init 0 */

  /* USER CODE END SPI2_Init 0 */

  /* USER CODE BEGIN SPI2_Init 1 */

  /* USER CODE END SPI2_Init 1 */
  /* SPI2 parameter configuration*/
  
  hspi2.Instance = SPI2;
  hspi2.Init.Mode = SPI_MODE_MASTER;
  hspi2.Init.Direction = SPI_DIRECTION_2LINES;
  hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi2.Init.NSS = SPI_NSS_SOFT;
  hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
  hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi2.Init.CRCPolynomial = 7;
  hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
  if (HAL_SPI_Init(&hspi2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN SPI2_Init 2 */

  /* USER CODE END SPI2_Init 2 */

}

 

snippet from  stm32f7xx_hal_msp.c:

/* USER CODE BEGIN 1 */
/**
* @brief SPI MSP Initialization
* This function configures the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hspi->Instance==SPI2)
  {
  /* USER CODE BEGIN SPI2_MspInit 0 */

  /* USER CODE END SPI2_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_SPI2_CLK_ENABLE();

    __HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**SPI2 GPIO Configuration
    PI1     ------> SPI2_SCK
    PB14     ------> SPI2_MISO
    PB15     ------> SPI2_MOSI
    */
    GPIO_InitStruct.Pin = GPIO_PIN_1;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    /* SPI2 DMA Init */
    /* SPI2_RX Init */
    hdma_spi2_rx.Instance = DMA1_Stream3;
    hdma_spi2_rx.Init.Channel = DMA_CHANNEL_0;
    hdma_spi2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_spi2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_spi2_rx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_spi2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_spi2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_spi2_rx.Init.Mode = DMA_NORMAL;
    hdma_spi2_rx.Init.Priority = DMA_PRIORITY_LOW;
    hdma_spi2_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_spi2_rx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(hspi,hdmarx,hdma_spi2_rx);

  /* USER CODE BEGIN SPI2_MspInit 1 */

  /* USER CODE END SPI2_MspInit 1 */
  }

}

/**
* @brief SPI MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
  if(hspi->Instance==SPI2)
  {
  /* USER CODE BEGIN SPI2_MspDeInit 0 */

  /* USER CODE END SPI2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_SPI2_CLK_DISABLE();

    /**SPI2 GPIO Configuration
    PI1     ------> SPI2_SCK
    PB14     ------> SPI2_MISO
    PB15     ------> SPI2_MOSI
    */
    HAL_GPIO_DeInit(GPIOI, GPIO_PIN_1);

    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_14|GPIO_PIN_15);

    /* SPI2 DMA DeInit */
    HAL_DMA_DeInit(hspi->hdmarx);
  /* USER CODE BEGIN SPI2_MspDeInit 1 */

  /* USER CODE END SPI2_MspDeInit 1 */
  }

}

 

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