AD和串口合起来的问题

1万 · 2023-3-8 20:25

本帖最后由比神乐于 2023-3-8 20:27 编辑

本来我想用串口打印热敏电阻的值。
我在例程UART里改的，加入AD例程里的代码。
后来发现：

static void MX_ADC1_Init(void)

{



  /* USER CODE BEGIN ADC1_Init 0 */



  /* USER CODE END ADC1_Init 0 */



  ADC_ChannelConfTypeDef sConfig = {0};



  /* USER CODE BEGIN ADC1_Init 1 */



  /* USER CODE END ADC1_Init 1 */



  /** Common config

  */

  hadc1.Instance = ADC1;

  hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;

  hadc1.Init.Resolution = ADC_RESOLUTION_12B;

  hadc1.Init.GainCompensation = 0;

  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;

  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;

  hadc1.Init.LowPowerAutoWait = DISABLE;

  hadc1.Init.ContinuousConvMode = DISABLE;

  hadc1.Init.NbrOfConversion = 1;

  hadc1.Init.DiscontinuousConvMode = DISABLE;



        hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;

  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

  hadc1.Init.DMAContinuousRequests = DISABLE;

  hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;

  hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;

  hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;

  hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;

  hadc1.Init.OversamplingMode = DISABLE;

  if (HAL_ADC_Init(&hadc1) != HAL_OK)

  {

    //Error_Handler();

  }



  /** Configure Regular Channel

  */

  sConfig.Channel = ADC_CHANNEL_9;

  sConfig.Rank = ADC_REGULAR_RANK_1;

  sConfig.SamplingTime = ADC_SAMPLETIME_391CYCLES_5;

  sConfig.SingleDiff = ADC_SINGLE_ENDED;

  sConfig.OffsetNumber = ADC_OFFSET_NONE;

  sConfig.Offset = 0;

  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)

  {

    Error_Handler();

  }

  /* USER CODE BEGIN ADC1_Init 2 */



  /* USER CODE END ADC1_Init 2 */



}

if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
//Error_Handler();
}
如果把Error_Handler();注释掉，串口可以打印出数据，当然不是正确的AD值。如果不注释掉，串口发不出数来。
请问高手，为什么初始化失败呢？两个代码我对照了好半天，也没发现问题在哪？
谢谢！