Question
What to do with HAL MSP initialization process?
Posted on December 26, 2016 at 02:08
Dear Sir,
According to user manual,UM1785, (Description of STM32F0xx HAL and Low-layer drivers)
stm32f0xx_hal_msp.c filecontains the MSP initialization and de-initialization (main routine and callbacks) of the peripheral used in the user application.
Its written that, ' It can be generated automatically by STM32CubeMX tool and further modified.'
I have generated my
stm32f0xx_hal_msp.c usingSTM32CubeMX as,
* Includes ------------------------------------------------------------------*/
#include 'stm32f0xx_hal.h'
extern void Error_Handler(void);
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* System interrupt init*/
/* SVC_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SVC_IRQn, 0, 0);
/* PendSV_IRQn interrupt configuration */
HAL_NVIC_SetPriority(PendSV_IRQn, 0, 0);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
but, the project I am going to work its stm32f0xx_hal_msp.c is different,
#include 'stm32f0xx_hal.h'
extern void Error_Handler(void);
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* System interrupt init*/
/* SVC_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SVC_IRQn, 0, 0);
/* PendSV_IRQn interrupt configuration */
HAL_NVIC_SetPriority(PendSV_IRQn, 0, 0);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA7 ------> SPI1_MOSI
PB3 ------> SPI1_SCK
PB4 ------> SPI1_MISO
*/
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0_SPI1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
}
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspDeInit 0 */
/* USER CODE END SPI1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA7 ------> SPI1_MOSI
PB3 ------> SPI1_SCK
PB4 ------> SPI1_MISO
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_7);
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_3|GPIO_PIN_4);
}
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1. What difference you find comparing each other?
2. Second example is done forperipheral needs to be de-initialized during the program execution?
3. Let me know whyHal_MspInit() and MSP De-Initialization is done for SPI1 ?
4. Can not we add those things main.c for SPI1 and keep the first code example as it is?
Help me please.
#hal-drivers