STM32F030K6T6+CubeMX+DMA+AD 无法读出电压值

LSweet 提问时间：2021-10-20 22:16 / 未解决

问答
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利用CubeMX 6.3.0 生成AD读取程序无法取出寄存器值，一直为零应为IO不够用用的串口下载程序

ADC_HandleTypeDef hadc;
DMA_HandleTypeDef hdma_adc;

/* ADC init function */
void MX_ADC_Init(void)
{

  ADC_ChannelConfTypeDef sConfig = {0};

  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
  */
  hadc.Instance = ADC1;
  hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
  hadc.Init.Resolution = ADC_RESOLUTION_12B;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_BACKWARD;
  hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc.Init.LowPowerAutoWait = ENABLE;
  hadc.Init.LowPowerAutoPowerOff = DISABLE;
  hadc.Init.ContinuousConvMode = ENABLE;
  hadc.Init.DiscontinuousConvMode = DISABLE;
  hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc.Init.DMAContinuousRequests = ENABLE;
  hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  if (HAL_ADC_Init(&hadc) != HAL_OK)
  {
Error_Handler();
  }
  /** Configure for the selected ADC regular channel to be converted.
  */
  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
  sConfig.SamplingTime = ADC_SAMPLETIME_71CYCLES_5;
  if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
  {
Error_Handler();
  }
  /** Configure for the selected ADC regular channel to be converted.
  */
  sConfig.Channel = ADC_CHANNEL_1;
  if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
  {
Error_Handler();
  }
  /** Configure for the selected ADC regular channel to be converted.
  */
  sConfig.Channel = ADC_CHANNEL_2;
  if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
  {
Error_Handler();
  }
  /* USER CODE BEGIN ADC_Init 2 */
//  ADC1->CFGR1 &= (uint32_t)~ADC_CFGR1_DMACFG;
//  ADC1->CFGR1 |= (uint32_t)ADC_CFGR1_DMACFG;
  /* USER CODE END ADC_Init 2 */

}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */

  /* USER CODE END ADC1_MspInit 0 */
/* ADC1 clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();
/**ADC GPIO Configuration
PA0    ------> ADC_IN0
PA1    ------> ADC_IN1
PA2    ------> ADC_IN2
*/
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* ADC1 DMA Init */
/* ADC Init */
hdma_adc.Instance = DMA1_Channel1;
hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_adc.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_adc.Init.Mode = DMA_CIRCULAR;
hdma_adc.Init.Priority = DMA_PRIORITY_LOW;
if (HAL_DMA_Init(&hdma_adc) != HAL_OK)
{
   Error_Handler();
}

__HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc);

  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{

  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspDeInit 0 */

  /* USER CODE END ADC1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_ADC1_CLK_DISABLE();

/**ADC GPIO Configuration
PA0    ------> ADC_IN0
PA1    ------> ADC_IN1
PA2    ------> ADC_IN2
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2);

/* ADC1 DMA DeInit */
HAL_DMA_DeInit(adcHandle->DMA_Handle);
  /* USER CODE BEGIN ADC1_MspDeInit 1 */

  /* USER CODE END ADC1_MspDeInit 1 */
  }
}

还有初始化
HAL_ADCEx_Calibration_Start(&hadc);
HAL_Delay(100);
HAL_ADC_Start_DMA(&hadc, ADC_Value, 150);

处理函数
void read_V(void)
{
  for(i=0,ad1=0,ad2=0,ad3=0; i<150;)
  {
ad1 += ADC_Value[i++];
ad2 += ADC_Value[i++];
ad3 += ADC_Value[i++];
  }
  ad1 /= 50;
  ad2 /= 50;
  ad3 /= 50;
  ChongDDY= ad1+ad2+ad3;
}

赞收藏评论4 发布时间：2021-10-20 22:16

4个回答

xmshao 回答时间：2021-10-21 13:18:30

如果基于CubeMx进行配置结合Cube库的话，应该可以很快实现该功能。我刚才也用F030开发板测试了OK.

代码比较简单,你可以参考下：

uint32_t AdcData3]={0};

HAL_ADCEx_Calibration_Start(&hadc);;
  HAL_ADC_Start_DMA(&hadc, AdcData,  3);

static void MX_ADC_Init(void)
{

  ADC_ChannelConfTypeDef sConfig = {0};

  hadc.Instance = ADC1;

  hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;

  hadc.Init.Resolution = ADC_RESOLUTION_12B;

  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;

  hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;

  hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;

  hadc.Init.LowPowerAutoWait = DISABLE;

  hadc.Init.LowPowerAutoPowerOff = DISABLE;

  hadc.Init.ContinuousConvMode = ENABLE;

  hadc.Init.DiscontinuousConvMode = DISABLE;

  hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;

  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

  hadc.Init.DMAContinuousRequests = ENABLE;

  hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;

  if (HAL_ADC_Init(&hadc) != HAL_OK)

  {

Error_Handler();

  }

  sConfig.Channel = ADC_CHANNEL_0;

  sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;

  sConfig.SamplingTime = ADC_SAMPLETIME_55CYCLES_5;

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

  {

Error_Handler();

  }

  sConfig.Channel = ADC_CHANNEL_1;

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

  {

Error_Handler();

  }

  sConfig.Channel = ADC_CHANNEL_2;

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

  {

Error_Handler();

  }

}

另外，建议你检查下硬件，尤其电源以及VDDA脚的连接情况。

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LSweet 回答时间：2021-11-3 21:27:20

xmshao 发表于 2021-10-21 13:18
如果基于CubeMx进行配置结合Cube库的话，应该可以很快实现该功能。我刚才也用F030开发板测试了OK.</p>
<p>

真坑，cubemx生成的程序有问题换成老版本的cubemx就可以了

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xmshao 回答时间：2021-11-4 11:05:24

LSweet 发表于 2021-11-3 21:27
真坑，cubemx生成的程序有问题换成老版本的cubemx就可以了

有时是可能有这些问题，毕竟CubeMx及库都超级庞大，一路有些问题也难免，总之，还是越来越好用。

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菜菜大兵回答时间：2021-12-29 09:49:43

CUBE生成代码初始化部分可能需要调整，上回我使用UART加DMA，先初始化UART再初始化DMA，这样只能接收最后一个字节，把DMA初始化放前面，UART初始化放后面，就正常了。AD加上DMA，我估计是一样的，你试下，先DMA初始化，后AD初始化。

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STM32F030K6T6+CubeMX+DMA+AD 无法读出电压值

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