使用ADC2多通道，每个通道需要设置不同阈值，ADC看门狗1中断正常，看门狗2和看门狗3不进入中断问题

suga116

使用ADC2多通道，每个通道需要设置不同阈值，ADC看门狗1中断正常，看门狗2和看门狗3不进入中断问题，有哪位大佬可以帮忙看一下吗

附上ADC代码



#include "adc.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

ADC_HandleTypeDef hadc2;
DMA_HandleTypeDef hdma_adc2;

/* ADC2 init function */
void MX_ADC2_Init(void)
{

  /* USER CODE BEGIN ADC2_Init 0 */

  /* USER CODE END ADC2_Init 0 */

  ADC_AnalogWDGConfTypeDef AnalogWDGConfig = {0};
  ADC_ChannelConfTypeDef sConfig = {0};

  /* USER CODE BEGIN ADC2_Init 1 */

  /* USER CODE END ADC2_Init 1 */

  /** Common config
  */
  hadc2.Instance = ADC2;
  hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;
  hadc2.Init.Resolution = ADC_RESOLUTION_10B;
  hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc2.Init.EOCSelection = ADC_EOC_SEQ_CONV;
  hadc2.Init.LowPowerAutoWait = DISABLE;
  hadc2.Init.ContinuousConvMode = ENABLE;
  hadc2.Init.NbrOfConversion = 4;
  hadc2.Init.DiscontinuousConvMode = DISABLE;
  hadc2.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T4_TRGO;
  hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
  hadc2.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
  hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc2.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
  hadc2.Init.OversamplingMode = DISABLE;
  hadc2.Init.Oversampling.Ratio = 1;
  if (HAL_ADC_Init(&hadc2) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Analog WatchDog 1
  */
  AnalogWDGConfig.WatchdogNumber = ADC_ANALOGWATCHDOG_1;
  AnalogWDGConfig.WatchdogMode = ADC_ANALOGWATCHDOG_SINGLE_REG;
  AnalogWDGConfig.Channel = ADC_CHANNEL_3;
  AnalogWDGConfig.ITMode = ENABLE;
  AnalogWDGConfig.HighThreshold = 650;
  AnalogWDGConfig.LowThreshold = 550;
  if (HAL_ADC_AnalogWDGConfig(&hadc2, &AnalogWDGConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_3;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  sConfig.OffsetSignedSaturation = DISABLE;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_7;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_4;
  sConfig.Rank = ADC_REGULAR_RANK_3;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_5;
  sConfig.Rank = ADC_REGULAR_RANK_4;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ADC2_Init 2 */
        //¿´ÃŹ·2
        AnalogWDGConfig.WatchdogNumber = ADC_ANALOGWATCHDOG_2;
  AnalogWDGConfig.WatchdogMode = ADC_ANALOGWATCHDOG_SINGLE_REG;
  AnalogWDGConfig.Channel = ADC_CHANNEL_7;
  AnalogWDGConfig.ITMode = ENABLE;
  AnalogWDGConfig.HighThreshold = 650;
  AnalogWDGConfig.LowThreshold = 550;
  if (HAL_ADC_AnalogWDGConfig(&hadc2, &AnalogWDGConfig) != HAL_OK)
  {
    Error_Handler();
  }
        //¿´ÃŹ·3
        AnalogWDGConfig.WatchdogNumber = ADC_ANALOGWATCHDOG_2;
  AnalogWDGConfig.WatchdogMode = ADC_ANALOGWATCHDOG_SINGLE_REG;
  AnalogWDGConfig.Channel = ADC_CHANNEL_4;
  AnalogWDGConfig.ITMode = ENABLE;
  AnalogWDGConfig.HighThreshold = 650;
  AnalogWDGConfig.LowThreshold = 550;
  if (HAL_ADC_AnalogWDGConfig(&hadc2, &AnalogWDGConfig) != HAL_OK)
  {
    Error_Handler();
  }
       
       
  HAL_ADCEx_Calibration_Start(&hadc2,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED); //ADC??
  /* USER CODE END ADC2_Init 2 */

}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
  if(adcHandle->Instance==ADC2)
  {
  /* USER CODE BEGIN ADC2_MspInit 0 */

  /* USER CODE END ADC2_MspInit 0 */

  /** Initializes the peripherals clock
  */
    PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_ADC;
    PeriphClkInitStruct.PLL2.PLL2M = 2;
    PeriphClkInitStruct.PLL2.PLL2N = 12;
    PeriphClkInitStruct.PLL2.PLL2P = 2;
    PeriphClkInitStruct.PLL2.PLL2Q = 2;
    PeriphClkInitStruct.PLL2.PLL2R = 2;
    PeriphClkInitStruct.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_3;
    PeriphClkInitStruct.PLL2.PLL2VCOSEL = RCC_PLL2VCOMEDIUM;
    PeriphClkInitStruct.PLL2.PLL2FRACN = 0.0;
    PeriphClkInitStruct.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
    {
      Error_Handler();
    }

    /* ADC2 clock enable */
    __HAL_RCC_ADC12_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**ADC2 GPIO Configuration
    PA6     ------> ADC2_INP3
    PA7     ------> ADC2_INP7
    PC4     ------> ADC2_INP4
    PB1     ------> ADC2_INP5
    */
    GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_4;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_1;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    /* ADC2 DMA Init */
    /* ADC2 Init */
    hdma_adc2.Instance = DMA1_Stream0;
    hdma_adc2.Init.Request = DMA_REQUEST_ADC2;
    hdma_adc2.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_adc2.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_adc2.Init.MemInc = DMA_MINC_ENABLE;
    hdma_adc2.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_adc2.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_adc2.Init.Mode = DMA_CIRCULAR;
    hdma_adc2.Init.Priority = DMA_PRIORITY_HIGH;
    hdma_adc2.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_adc2) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc2);

    /* ADC2 interrupt Init */
    HAL_NVIC_SetPriority(ADC_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(ADC_IRQn);
  /* USER CODE BEGIN ADC2_MspInit 1 */

  /* USER CODE END ADC2_MspInit 1 */
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{

  if(adcHandle->Instance==ADC2)
  {
  /* USER CODE BEGIN ADC2_MspDeInit 0 */

  /* USER CODE END ADC2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC12_CLK_DISABLE();

    /**ADC2 GPIO Configuration
    PA6     ------> ADC2_INP3
    PA7     ------> ADC2_INP7
    PC4     ------> ADC2_INP4
    PB1     ------> ADC2_INP5
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_6|GPIO_PIN_7);

    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_4);

    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_1);

    /* ADC2 DMA DeInit */
    HAL_DMA_DeInit(adcHandle->DMA_Handle);

    /* ADC2 interrupt Deinit */
    HAL_NVIC_DisableIRQ(ADC_IRQn);
  /* USER CODE BEGIN ADC2_MspDeInit 1 */

  /* USER CODE END ADC2_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */


使用的是这几个引脚

eric2013

看下HAL库的看门狗源码，这样配置是不是会导致仅一个有效。

   AnalogWDGConfig.WatchdogNumber = ADC_ANALOGWATCHDOG_2;
  AnalogWDGConfig.WatchdogMode = ADC_ANALOGWATCHDOG_SINGLE_REG;
  AnalogWDGConfig.Channel = ADC_CHANNEL_4;
  AnalogWDGConfig.ITMode = ENABLE;
  AnalogWDGConfig.HighThreshold = 650;
  AnalogWDGConfig.LowThreshold = 550;
  if (HAL_ADC_AnalogWDGConfig(&hadc2, &AnalogWDGConfig) != HAL_OK)
  {
    Error_Handler();
  }

suga116

只配置一个看门狗，如果不配置看门狗1，只配置看门狗2也是不进中断的；但是把看门狗2改成看门狗1可以进中断

suga116

找到问题了  硬汉哥，我看了HAL_ADC_IRQHandler(&hadc2);的源码，看门狗1对应的中断是HAL_ADC_LevelOutOfWindowCallback，看门狗2是HAL_ADCEx_LevelOutOfWindow2Callback，我以为看门狗1和看门狗2都是用HAL_ADC_LevelOutOfWindowCallback

eric2013

suga116 发表于 2025-10-28 09:21
找到问题了  硬汉哥，我看了HAL_ADC_IRQHandler(&hadc2);的源码，看门狗1对应的中断是HAL_ADC_LevelOutOfWi ...

谢谢告知最终原因