STM32U575 ADC采样

梦想成真_518 提问时间：2022-8-3 09:03 / 未解决

问答
是否解决:	未解决

目前在调试STM32U575的ADC驱动，系统时钟及ADC初始化接口相同，但是从单驱动调试OK情况下移植至业务代码中出现ADC校准超时，有知道什么原因吗？ ADC Init Failed. Error happened in the adc calibration process. How to solve it

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;
}