STM32CubeMX配置STM32G031多通道ADC + DMA采集（HAL库开发）

时钟配置HSI主频配置64M

勾选打开8个通道的ADC

使能连续转换模式

添加DMA

DMA模式选择循环模式

使能DMA连续请求

采样时间配置160.5

转换次数为8

配置好8次转换的顺序

配置好串口，选择异步模式配置好需要的开发环境并获取代码

修改main.c

串口重定向

#include "stdio.h"
int fputc(int ch, FILE *f)
{HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF);return ch;
}

串口重定向一定要勾选Use Micro LIBMX_ADC1_Init();

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 *//** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)*/hadc1.Instance = ADC1;hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;hadc1.Init.Resolution = ADC_RESOLUTION_12B;hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;hadc1.Init.LowPowerAutoWait = DISABLE;hadc1.Init.LowPowerAutoPowerOff = DISABLE;hadc1.Init.ContinuousConvMode = ENABLE;hadc1.Init.NbrOfConversion = 8;hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;hadc1.Init.DMAContinuousRequests = ENABLE;hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_160CYCLES_5;hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;hadc1.Init.OversamplingMode = DISABLE;hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;if (HAL_ADC_Init(&hadc1) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_0;sConfig.Rank = ADC_REGULAR_RANK_1;sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_1;sConfig.Rank = ADC_REGULAR_RANK_2;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_2;sConfig.Rank = ADC_REGULAR_RANK_3;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_3;sConfig.Rank = ADC_REGULAR_RANK_4;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_4;sConfig.Rank = ADC_REGULAR_RANK_5;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_5;sConfig.Rank = ADC_REGULAR_RANK_6;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_6;sConfig.Rank = ADC_REGULAR_RANK_7;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/** Configure Regular Channel*/sConfig.Channel = ADC_CHANNEL_7;sConfig.Rank = ADC_REGULAR_RANK_8;if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK){Error_Handler();}/* USER CODE BEGIN ADC1_Init 2 *//* USER CODE END ADC1_Init 2 */}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)

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_ADC_CLK_ENABLE();__HAL_RCC_GPIOA_CLK_ENABLE();/**ADC1 GPIO ConfigurationPA0     ------> ADC1_IN0PA1     ------> ADC1_IN1PA2     ------> ADC1_IN2PA3     ------> ADC1_IN3PA4     ------> ADC1_IN4PA5     ------> ADC1_IN5PA6     ------> ADC1_IN6PA7     ------> ADC1_IN7*/GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;GPIO_InitStruct.Pull = GPIO_NOPULL;HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);/* ADC1 DMA Init *//* ADC1 Init */hdma_adc1.Instance = DMA1_Channel1;hdma_adc1.Init.Request = DMA_REQUEST_ADC1;hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;hdma_adc1.Init.Mode = DMA_CIRCULAR;hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;if (HAL_DMA_Init(&hdma_adc1) != HAL_OK){Error_Handler();}__HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc1);/* USER CODE BEGIN ADC1_MspInit 1 *//* USER CODE END ADC1_MspInit 1 */}
}

主函数

 uint16_t ADC_CHANNEL[8];
/*** @brief  The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_DMA_Init();MX_ADC1_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 *//* USER CODE END 2 */HAL_ADC_Start_DMA(&hadc1,(uint32_t*)&ADC_CHANNEL, 8); //启动AD转换，DMA模式/* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE */static int count = 0;count++;uint16_t Adc_Val = 0;if(count % 100000 == 0){for(int i = 0; i < 8; i++){Adc_Val = ADC_CHANNEL[i];printf("CHANNEL%d = %04d, %f V\r\n", i, Adc_Val, (double)Adc_Val / 4095 * 3.3); }printf("\r\n\r\n\r\n\r\n\r\n"); }/* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}

串口打印