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求助：STM32F4 ADC + DMA出现问题，只进入一次中断。我现在需求是：只需要采集单个通道PC1的模拟值，程序用CUBE生成的，可以确定的是，PC1对应的ADC通道号，和DMA通道是正确的，但是只会进去一次DMA2_Stream2_IRQHandler中断,然后程序卡死在HAL_ADC_IRQHandler函数。
有调过ADC+DMA的，比较熟的帮忙指教下，那个配置有问题，或者测试程序有问题，谢谢！
主函数如下：
MX_DMA_Init();
MX_ADC2_Init();
HAL_ADC_Start_DMA(&hadc2,&ADC2_Value[1],1);//开启ADC终端转换
while(1)
{
ADC2_Value[1] = HAL_ADC_GetValue(&hadc2);
}
配置程序如下：
/* ADC2 init function */
void MX_ADC2_Init(void)
{
/* USER CODE BEGIN ADC2_Init 0 */
/* USER CODE END ADC2_Init 0 */
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC2_Init 1 */
/* USER CODE END ADC2_Init 1 */
/** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc2.Instance = ADC2;
hadc2.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
hadc2.Init.Resolution = ADC_RESOLUTION_12B;
hadc2.Init.ScanConvMode = DISABLE;
hadc2.Init.ContinuousConvMode = ENABLE;//ENABLE：开启连续转换模式
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc2.Init.NbrOfConversion = 1;
hadc2.Init.DMAContinuousRequests = ENABLE;//ENABLE：开启连续转换模式
hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV;//ADC_EOC_SEQ_CONV:单通道转换完成就进入中断 ADC_EOC_SINGLE_CONV
if (HAL_ADC_Init(&hadc2) != HAL_OK)
{
Error_Handler();
}
/** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
*/
sConfig.Channel = ADC_CHANNEL_11;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC2_Init 2 */
/* USER CODE END ADC2_Init 2 */
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(adcHandle->Instance==ADC2)//
{
/* USER CODE BEGIN ADC2_MspInit 0 */
/* USER CODE END ADC2_MspInit 0 */
/* ADC2 clock enable */
__HAL_RCC_ADC2_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
/**ADC2 GPIO Configuration
PC1 ------> ADC2_IN11
*/
GPIO_InitStruct.Pin = GPIO_PIN_1;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/* ADC2 DMA Init */
/* ADC2 Init */
hdma_adc2.Instance = DMA2_Stream2;
hdma_adc2.Init.Channel = DMA_CHANNEL_1;
hdma_adc2.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_adc2.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_adc2.Init.MemInc = DMA_MINC_DISABLE;//因为是单通道采集，所以取消 memory增长的配置
hdma_adc2.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
hdma_adc2.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
hdma_adc2.Init.Mode = DMA_NORMAL;
hdma_adc2.Init.Priority = DMA_PRIORITY_LOW;
hdma_adc2.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_adc2) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc2);
/* USER CODE BEGIN ADC2_MspInit 1 */
/* USER CODE END ADC2_MspInit 1 */
}
else
{
}
}
/**
* Enable DMA controller clock
*/
void MX_DMA_Init(void)//用于ADC2采集
{
/* DMA controller clock enable */
__HAL_RCC_DMA2_CLK_ENABLE();
/* DMA interrupt init */
/* DMA2_Stream2_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
}
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_ADC2_CLK_DISABLE();
/**ADC2 GPIO Configuration
PC1 ------> ADC2_IN11
*/
HAL_GPIO_DeInit(GPIOC, GPIO_PIN_1);
/* ADC2 DMA DeInit */
HAL_DMA_DeInit(adcHandle->DMA_Handle);
/* USER CODE BEGIN ADC2_MspDeInit 1 */
/* USER CODE END ADC2_MspDeInit 1 */
}
else
{
}
}
void DMA2_Stream2_IRQHandler(void)
{
/* USER CODE BEGIN DMA2_Stream2_IRQn 0 */
/* USER CODE END DMA2_Stream2_IRQn 0 */
HAL_DMA_IRQHandler(&hdma_adc2);
/* USER CODE BEGIN DMA2_Stream2_IRQn 1 */
/* USER CODE END DMA2_Stream2_IRQn 1 */
}
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发表于 2023-1-12 15:31:48
楼主
发表于 2023-1-14 09:40:43
