STM32U575 ADC采样

    HAL_StatusTypeDef HAL_ADCEx_Calibration_Start(ADC_HandleTypeDef *hadc, uint32_t CalibrationMode, uint32_t SingleDiff)

    {

      HAL_StatusTypeDef tmp_hal_status;

      __IO uint32_t wait_loop_index = 0UL;



      UNUSED(SingleDiff); /* STM32U5 calibration is not making difference between Single and Diff ended */

      /* We keep this to be inligne with old products API and for any further use */



      /* Check the parameters */

      assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));

      assert_param(IS_ADC_SINGLE_DIFFERENTIAL(SingleDiff));



      __HAL_LOCK(hadc);



      /* Calibration prerequisite: ADC must be disabled. */



      /* Disable the ADC (if not already disabled) */

      tmp_hal_status = ADC_Disable(hadc);



      /* Check if ADC is effectively disabled */

      if (tmp_hal_status == HAL_OK)

      {

        /* Set ADC state */

        ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_REG_BUSY | HAL_ADC_STATE_INJ_BUSY, HAL_ADC_STATE_BUSY_INTERNAL);



        /* Start ADC calibration in mode single-ended or differential */

        LL_ADC_StartCalibration(hadc->Instance, CalibrationMode);



        /* Wait for calibration completion */

        while (LL_ADC_IsCalibrationOnGoing(hadc->Instance) != 0UL)

        {

          wait_loop_index++;

          if (wait_loop_index >= ADC_CALIBRATION_TIMEOUT)

          {

            /* Update ADC state machine to error */

            ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL, HAL_ADC_STATE_ERROR_INTERNAL);



            __HAL_UNLOCK(hadc);



            return HAL_ERROR;

          }

        }



        /* Set ADC state */

        ADC_STATE_CLR_SET(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL, HAL_ADC_STATE_READY);

      }

      else

      {

        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);



        /* Note: No need to update variable "tmp_hal_status" here: already set    */

        /*       to state "HAL_ERROR" by function disabling the ADC.              */

      }



      __HAL_UNLOCK(hadc);



      return tmp_hal_status;

    }