用STM32L052采样AD，两个通道，其中一个通道要用过采样技术，通道的切换是在AD中断进行。请问是否每次都要校准HAL_ADCEx_Calibration_Start()？而每次AD中断中，参数设置的时候，是否都要关中断HAL_ADC_Stop_IT() ，参数设置完在开中断HAL_ADC_Start_IT（）？


/* ADC2 init function */
void MX_ADC2_Init(void)
{
  ADC_ChannelConfTypeDef sConfig;
    /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
    */
  hadc.Instance = ADC1;
  hadc.Init.OversamplingMode = DISABLE;
  hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1;
  hadc.Init.Resolution = ADC_RESOLUTION12b;
  hadc.Init.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
  hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.ContinuousConvMode = DISABLE;
  hadc.Init.DiscontinuousConvMode = ENABLE;
  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
  hadc.Init.DMAContinuousRequests = DISABLE;
  hadc.Init.EOCSelection = EOC_SINGLE_CONV;
  hadc.Init.Overrun = OVR_DATA_PRESERVED;
  hadc.Init.LowPowerAutoWait = DISABLE;
  hadc.Init.LowPowerFrequencyMode = ENABLE;
  hadc.Init.LowPowerAutoPowerOff = DISABLE;
  HAL_ADC_Init(&hadc);
    /**Configure for the selected ADC regular channel to be converted.
    */
  sConfig.Channel = ADC_CHANNEL_2;
  sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);
}
/* ADC7 init function */
void MX_ADC7_Init(void)
{
  ADC_ChannelConfTypeDef sConfig;
    /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
    */
  hadc.Instance = ADC1;
  hadc.Init.OversamplingMode = ENABLE;
  hadc.Init.Oversample.Ratio = ADC_OVERSAMPLING_RATIO_128;
  hadc.Init.Oversample.RightBitShift = ADC_RIGHTBITSHIFT_3;
  hadc.Init.Oversample.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
  hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1;
  hadc.Init.Resolution = ADC_RESOLUTION12b;
  hadc.Init.SamplingTime = ADC_SAMPLETIME_7CYCLES_5;
  hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.ContinuousConvMode = DISABLE;
  hadc.Init.DiscontinuousConvMode = ENABLE;
  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
  hadc.Init.DMAContinuousRequests = DISABLE;
  hadc.Init.EOCSelection = EOC_SINGLE_CONV;
  hadc.Init.Overrun = OVR_DATA_PRESERVED;
  hadc.Init.LowPowerAutoWait = DISABLE;
  hadc.Init.LowPowerFrequencyMode = ENABLE;
  hadc.Init.LowPowerAutoPowerOff = DISABLE;
  HAL_ADC_Init(&hadc);
    /**Configure for the selected ADC regular channel to be converted.
    */
  sConfig.Channel = ADC_CHANNEL_7;
  sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);
}