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

 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 LIB

 获取ADC通道值

uint32_t ADC_Get_Average(uint8_t ch)
{
	ADC_ChannelConfTypeDef sConfig;
	uint32_t value_sum=0;	
	switch(ch)							
	{
		case 0:sConfig.Channel = ADC_CHANNEL_0;break;	
		case 1:sConfig.Channel = ADC_CHANNEL_1;break;
		case 2:sConfig.Channel = ADC_CHANNEL_2;break;
		case 3:sConfig.Channel = ADC_CHANNEL_3;break;
		case 4:sConfig.Channel = ADC_CHANNEL_4;break;
		case 5:sConfig.Channel = ADC_CHANNEL_5;break;
        case 6:sConfig.Channel = ADC_CHANNEL_6;break;
        case 7:sConfig.Channel = ADC_CHANNEL_7;break;
	}
    
	sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;		
	sConfig.Rank = ADC_REGULAR_RANK_1;
	HAL_ADC_ConfigChannel(&hadc1,&sConfig);											

    HAL_ADC_Start(&hadc1);								
    HAL_ADC_PollForConversion(&hadc1,30);				
    value_sum = HAL_ADC_GetValue(&hadc1);								
    HAL_ADC_Stop(&hadc1);								

	return value_sum;									
}

主函数 

int main(void)
{
    HAL_Init();
    SystemClock_Config();
    MX_GPIO_Init();
    MX_ADC1_Init();
    MX_USART1_UART_Init();


    uint16_t i = 0;
    uint16_t Adc_Val = 0;
    static uint16_t count = 0;
    
    while (1)
    {
        count++;
        if(count % 100000 == 0)
        {
            for(i = 0; i < 8; i++)
            {
                Adc_Val  = ADC_Get_Average(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"); 
        }
    }
}

 串口输出