HAL CRC initialization and configuration functions migration

The goal of this page is to show how to migrate the initialization sequence using STM32CubeMX2:

  • Open STM32CubeMX2 CRC configuration panel.

  • Configure the SW layer HAL.

  • Configure the CRC main features.

  • Generate the code

HAL CRC configuration panel

Create a new project with the STM32CubeMX2, then start the initialization and the main configuration.

Project configuration panel

HAL CRC main features configuration

Configure the CRC main features.

CRC main feature configuration

Generated CRC initialization and de-initialization sequences

The CRC initialization and de-initialization sequences are generated in the mx_crc_hal_init function in the mx_crc.c file under $YOUR_PROJECT_NAME$/$YOUR_PROJECT_NAME$_SW/generated/STM32Cube_CodeGen.

Related concepts:

STM32CubeMX2 Generated with default values

Topic

HAL1 Code Snippet

HAL2 Code Snippet

Handle declaration 

CRC_HandleTypeDef hcrc;

hal_crc_handle_t hCRC;

Initialization and configuration sequence 

static void MX_CRC_Init(void)
{
   hcrc.Instance = CRC;
   hcrc.Init.DefaultPolynomialUse = DEFAULT_POLYNOMIAL_ENABLE;
   hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_ENABLE;
   hcrc.Init.InputDataInversionMode = CRC_INPUTDATA_INVERSION_NONE;
   hcrc.Init.OutputDataInversionMode = CRC_OUTPUTDATA_INVERSION_DISABLE;
   hcrc.InputDataFormat = CRC_INPUTDATA_FORMAT_WORDS;
   if (HAL_CRC_Init(&hcrc) != HAL_OK)
   {
     Error_Handler();
   }
}


void HAL_CRC_MspInit(CRC_HandleTypeDef* hcrc)
 {
   if(hcrc->Instance==CRC)
   {
     /* Peripheral clock enable */
     __HAL_RCC_CRC_CLK_ENABLE();

   }
 }

hal_crc_handle_t *mx_crc_hal_init(void)
{
   HAL_RCC_CRC_EnableClock();

   if (HAL_CRC_Init(&hCRC, HAL_CRC) != HAL_OK)
   {
     return NULL;
   }

   return &hCRC;
}

Deinitialization sequence 

static void MX_CRC_DeInit(void)
{
 HAL_CRC_DeInit(&hCRC);
}


void HAL_CRC_MspDeInit(CRC_HandleTypeDef* hcrc)
{
   if(hcrc->Instance==CRC)
   {
     /* Peripheral clock disable */
     __HAL_RCC_CRC_CLK_DISABLE();

   }
}

void mx_crc_hal_deinit(void)
{
   (void)HAL_CRC_DeInit(&hCRC);
   HAL_RCC_CRC_Reset();
   HAL_RCC_CRC_DisableClock();
}