HAL WWDG initialization and configuration functions migration ¶

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

Open STM32CubeMX2 WWDG configuration panel.
Configure the SW layer HAL.
Configure the WWDG main features.
Configure the NVIC if the application requires the WWDG to be used in IT mode.
Generate the code.

HAL WWDG configuration panel ¶

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

HAL WWDG main features configuration ¶

Configure the WWDG main features.

NVIC configuration ¶

Configure the NVIC in case of an interrupt.

Generated WWDG initialization and de-initialization sequences ¶

The WWDG initialization and de-initialization sequences are generated in the mx_wwdg_init function in the mx_wwdg.c file under $YOUR_PROJECT_NAME$/$YOUR_PROJECT_NAME$_SW/generated/STM32Cube_CodeGen.

STM32CubeMX2 Generated : WWDG initialization sequence ¶
Topic	HAL 1 Code Snippet	HAL 2 Code Snippet
Declaration of the handle	WWDG_HandleTypeDef hwwdg;	static hal_wwdg_handle_t hWWDG;
initialization and configuration sequence function.	static void MX_WWDG_Init(void) { /* USER CODE BEGIN WWDG_Init 0 / / USER CODE END WWDG_Init 0 / / USER CODE BEGIN WWDG_Init 1 / / USER CODE END WWDG_Init 1 / hwwdg.Instance = WWDG; hwwdg.Init.Prescaler = WWDG_PRESCALER_1; hwwdg.Init.Window = 64; hwwdg.Init.Counter = 64; hwwdg.Init.EWIMode = WWDG_EWI_DISABLE; if (HAL_WWDG_Init(&hwwdg) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN WWDG_Init 2 / / USER CODE END WWDG_Init 2 */ }	hal_wwdg_handle_t mx_wwdg_init(void) { if (HAL_WWDG_Init(&hWWDG, HAL_WWDG1) != HAL_OK) { return NULL; } HAL_RCC_WWDG_EnableClock(); / Enable the interruption for WWDG */ HAL_CORTEX_NVIC_SetPriority(WWDG_IRQn, HAL_CORTEX_NVIC_PREEMP_PRIORITY_0, HAL_CORTEX_NVIC_SUB_PRIORITY_0); HAL_CORTEX_NVIC_EnableIRQ(WWDG_IRQn); return &hWWDG; } hal_status_t mx_wwdg_start(void) { return HAL_WWDG_Start(&hWWDG, 0UL, 64UL, 1UL); }

STM32CubeMX2 Generated : WWDG initialization sequence ¶

Topic

HAL 1 Code Snippet

HAL 2 Code Snippet

Declaration of the handle

                WWDG_HandleTypeDef hwwdg;

               

                static hal_wwdg_handle_t hWWDG;

               

initialization and configuration sequence function.

                static void MX_WWDG_Init(void)
{

  /* USER CODE BEGIN WWDG_Init 0 */

  /* USER CODE END WWDG_Init 0 */

  /* USER CODE BEGIN WWDG_Init 1 */

  /* USER CODE END WWDG_Init 1 */
  hwwdg.Instance = WWDG;
  hwwdg.Init.Prescaler = WWDG_PRESCALER_1;
  hwwdg.Init.Window = 64;
  hwwdg.Init.Counter = 64;
  hwwdg.Init.EWIMode = WWDG_EWI_DISABLE;
  if (HAL_WWDG_Init(&hwwdg) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN WWDG_Init 2 */

  /* USER CODE END WWDG_Init 2 */

}

               

                hal_wwdg_handle_t *mx_wwdg_init(void)
{
  if (HAL_WWDG_Init(&hWWDG, HAL_WWDG1) != HAL_OK)
  {
    return NULL;
  }

  HAL_RCC_WWDG_EnableClock();

  /* Enable the interruption for WWDG */
  HAL_CORTEX_NVIC_SetPriority(WWDG_IRQn, HAL_CORTEX_NVIC_PREEMP_PRIORITY_0, HAL_CORTEX_NVIC_SUB_PRIORITY_0);
  HAL_CORTEX_NVIC_EnableIRQ(WWDG_IRQn);

  return &hWWDG;
}

hal_status_t mx_wwdg_start(void)
{
  return HAL_WWDG_Start(&hWWDG, 0UL, 64UL, 1UL);
}

               