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>© 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