本次评测NUCLEO-U545RE-Q 的12位ADC转换,选用ADC4的通道4，连续转换，DMA方式数据32次传输。NUCLEO-U545RE-Q的ADC-DMA在CubeMX中的配置方法与STM32F-H-L等系列的配置方法大不相同。

选择ADC4的通道4

配置GPDMA1

配置LINKDLIST

使用1电位器将+3.3V可调电压连接到ADC4通道4输入端，ADC转换结果化成电压值显示在上一帖的OLED屏幕上。

主函数添加ADC相关代码

 MX_ADCQueue_Config();
  __HAL_LINKDMA(&hadc4, DMA_Handle, handle_GPDMA1_Channel10);
  if (HAL_DMAEx_List_LinkQ(&handle_GPDMA1_Channel10, &ADCQueue) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_ADC_Start_DMA(&hadc4,
                        (uint32_t *)aADCxConvertedData,
                        (ADC_CONVERTED_DATA_BUFFER_SIZE)
                       ) != HAL_OK)
  {
    Error_Handler();
  }

编译、下载、运行

主要代码

void MX_ADC4_Init(void)
{
  hadc4.Instance = ADC4;
  hadc4.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;
  hadc4.Init.Resolution = ADC_RESOLUTION_12B;
  hadc4.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc4.Init.ScanConvMode = ADC4_SCAN_DISABLE;
  hadc4.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc4.Init.LowPowerAutoPowerOff = ADC_LOW_POWER_NONE;
  hadc4.Init.LowPowerAutoWait = DISABLE;
  hadc4.Init.ContinuousConvMode = ENABLE;
  hadc4.Init.NbrOfConversion = 1;
  hadc4.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc4.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc4.Init.DMAContinuousRequests = ENABLE;
  hadc4.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_LOW;
  hadc4.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
  hadc4.Init.SamplingTimeCommon1 = ADC4_SAMPLETIME_79CYCLES_5;
  hadc4.Init.SamplingTimeCommon2 = ADC4_SAMPLETIME_79CYCLES_5;
  hadc4.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc4) != HAL_OK)
  {
    Error_Handler();
  }
  sConfig.Channel = ADC_CHANNEL_4;
  sConfig.Rank = ADC4_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC4_SAMPLINGTIME_COMMON_1;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc4, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  if(adcHandle->Instance==ADC4)
  {
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADCDAC;
    PeriphClkInit.AdcDacClockSelection = RCC_ADCDACCLKSOURCE_HSI;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }
    __HAL_RCC_ADC4_CLK_ENABLE();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    GPIO_InitStruct.Pin = GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
  }
}

HAL_StatusTypeDef MX_ADCQueue_Config(void)
{
  HAL_StatusTypeDef ret = HAL_OK;
  DMA_NodeConfTypeDef pNodeConfig;
  pNodeConfig.NodeType = DMA_GPDMA_LINEAR_NODE;
  pNodeConfig.Init.Request = GPDMA1_REQUEST_ADC4;
  pNodeConfig.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST;
  pNodeConfig.Init.Direction = DMA_PERIPH_TO_MEMORY;
  pNodeConfig.Init.SrcInc = DMA_SINC_FIXED;
  pNodeConfig.Init.DestInc = DMA_DINC_INCREMENTED;
  pNodeConfig.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_WORD;
  pNodeConfig.Init.DestDataWidth = DMA_DEST_DATAWIDTH_WORD;
  pNodeConfig.Init.SrcBurstLength = 1;
  pNodeConfig.Init.DestBurstLength = 1;
  pNodeConfig.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0| DMA_DEST_ALLOCATED_PORT0;
  pNodeConfig.Init.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;
  pNodeConfig.TriggerConfig.TriggerPolarity = DMA_TRIG_POLARITY_MASKED;
  pNodeConfig.DataHandlingConfig.DataExchange = DMA_EXCHANGE_NONE;
  pNodeConfig.DataHandlingConfig.DataAlignment =  DMA_DATA_RIGHTALIGN_ZEROPADDED;
  pNodeConfig.SrcAddress = 0;
  pNodeConfig.DstAddress = 0;
  pNodeConfig.DataSize = 0;
  ret |= HAL_DMAEx_List_BuildNode(&pNodeConfig, &ADCNode);
  ret |= HAL_DMAEx_List_InsertNode_Tail(&ADCQueue, &ADCNode);
  ret |= HAL_DMAEx_List_SetCircularMode(&ADCQueue);
   return ret;
}

void MX_GPDMA1_Init(void)
{
  __HAL_RCC_GPDMA1_CLK_ENABLE();
    HAL_NVIC_SetPriority(GPDMA1_Channel10_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(GPDMA1_Channel10_IRQn);
  handle_GPDMA1_Channel10.Instance = GPDMA1_Channel10;
  handle_GPDMA1_Channel10.InitLinkedList.Priority = DMA_LOW_PRIORITY_LOW_WEIGHT;
  handle_GPDMA1_Channel10.InitLinkedList.LinkStepMode = DMA_LSM_FULL_EXECUTION;
  handle_GPDMA1_Channel10.InitLinkedList.LinkAllocatedPort = DMA_LINK_ALLOCATED_PORT1;
  handle_GPDMA1_Channel10.InitLinkedList.TransferEventMode = DMA_TCEM_LAST_LL_ITEM_TRANSFER;
  handle_GPDMA1_Channel10.InitLinkedList.LinkedListMode = DMA_LINKEDLIST_CIRCULAR;
  if (HAL_DMAEx_List_Init(&handle_GPDMA1_Channel10) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel10, DMA_CHANNEL_NPRIV) != HAL_OK)
  {
    Error_Handler();
  }
}

没整点动图试试