HAL OPAMP initialization and configuration functions migration

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

  • Open STM32CubeMX2 OPAMP configuration panel.

  • Configure the SW layer HAL.

  • Configure the OPAMP main features.

  • Configure the additional OPAMP features if needed.

  • Configure the OPAMP GPIO pins.

  • Configure the NVIC if the application requires the OPAMP to be used in IT mode.

  • Generate the code.

HAL OPAMP configuration panel

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

Project configuration panel

HAL OPAMP main features configuration

Configure the OPAMP main features.

OPAMP main feature configuration

HAL OPAMP additional features configuration

Configure the additional OPAMP features if needed.

OPAMP additional feature configuration

GPIO configuration

Configure GPIO pins.

OPAMP GPIO configuration

Generated OPAMP initialization and de-initialization sequences

The OPAMP initialization and de-initialization sequences are generated in the mx_opamp_hal_init function in mx_opamp.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

OPAMP Init, config and Msp sequences 

void MX_OPAMP1_Init(void)
{
    hopamp1.Instance = OPAMP1;
    hopamp1.Init.Mode = OPAMP_STANDALONE_MODE;
    hopamp1.Init.NonInvertingInput = OPAMP_NONINVERTINGINPUT_IO0;
    hopamp1.Init.InvertingInput = OPAMP_INVERTINGINPUT_IO0;
    hopamp1.Init.PowerMode = OPAMP_POWERMODE_NORMAL;
    hopamp1.Init.UserTrimming = OPAMP_TRIMMING_FACTORY;
    if (HAL_OPAMP_Init(&hopamp1) != HAL_OK)
    {
        Error_Handler();
    }
}


void HAL_OPAMP_MspInit(OPAMP_HandleTypeDef* hopamp)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hopamp->Instance==OPAMP1)
  {
    /* USER CODE BEGIN OPAMP1_MspInit 0 */

    /* USER CODE END OPAMP1_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_OPAMP_CLK_ENABLE();

    /* USER CODE BEGIN OPAMP1_MspInit 1 */

    /* USER CODE END OPAMP1_MspInit 1 */

  }

}

hal_opamp_handle_t *mx_opamp1_init(void)
{
  HAL_RCC_OPAMP1_EnableClock();

  /****************************************************************************/
  /* Configuration of basic features (mandatory)                              */
  /****************************************************************************/

  hal_opamp_config_t opamp_config;
  hal_opamp_config_input_connection_t config_input_connection;

  if (HAL_OPAMP_Init(&hOPAMP1, HAL_OPAMP1) != HAL_OK)
  {
    return NULL;
  }

  opamp_config.speed_mode          = HAL_OPAMP_SPEED_MODE_NORMAL;
  opamp_config.configuration_mode  = HAL_OPAMP_MODE_STANDALONE;
  opamp_config.opamp_output        = HAL_OPAMP_OUTPUT_CONNECTION_EXTERNAL;
  HAL_OPAMP_SetConfig(&hOPAMP1, &opamp_config);

  config_input_connection.inverting_input = HAL_OPAMP_INVERTING_INPUT_GPIO_0;

  config_input_connection.non_inverting_input = HAL_OPAMP_NON_INVERTING_INPUT_GPIO_0;
  HAL_OPAMP_SetConfigInputConnection(&hOPAMP1, &config_input_connection);

  HAL_OPAMP_SetPGAExternalMode(&hOPAMP1, HAL_OPAMP_PGA_EXT_NONE);

  HAL_RCC_GPIOA_EnableClock();

  hal_gpio_config_t  gpio_config;

  /*
    OPAMP1 GPIO Configuration

    [GPIO Pin] ------> [Signal Name]

       PA1     ------>   OPAMP1_VINP0
       PA6     ------>   OPAMP1_VOUT
       PA2     ------>   OPAMP1_VINM0
    */

  gpio_config.mode        = HAL_GPIO_MODE_ANALOG;
  gpio_config.pull        = HAL_GPIO_PULL_NO;
  HAL_GPIO_Init(HAL_GPIOA, HAL_GPIO_PIN_1 | HAL_GPIO_PIN_6 | HAL_GPIO_PIN_2, &gpio_config);

  return &hOPAMP1;
}

OPAMP Deinit sequence 

static void MX_OPAMP_DeInit(void)
{
 HAL_OPAMP_DeInit(&hOPAMP);
}


void HAL_OPAMP_MspDeInit(OPAMP_HandleTypeDef* hopamp)
{
  if(hopamp->Instance==OPAMP1)
  {
    /* USER CODE BEGIN OPAMP1_MspDeInit 0 */

    /* USER CODE END OPAMP1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_OPAMP_CLK_DISABLE();

    /* USER CODE BEGIN OPAMP1_MspDeInit 1 */

    /* USER CODE END OPAMP1_MspDeInit 1 */
  }

}

 void mx_opamp_hal_deinit(void)
{
  (void)HAL_OPAMP_DeInit(&hOPAMP);

  HAL_RCC_OPAMP1_Reset();

  HAL_RCC_OPAMP1_DisableClock();

  /* De-initialize all GPIO pins associated with OPAMP1 */
  HAL_GPIO_DeInit(HAL_GPIOA, HAL_GPIO_PIN_1 | HAL_GPIO_PIN_2 | HAL_GPIO_PIN_6);
}