单缓冲模式的ADC+DMA操作，代码测试通过
2020.05.07更新，之前的版本有前后不一致的地方已经全部更正
407主频 168MHZ 该实例采集了8路AD数据，每一路获取100组数据，然后进行平均处理，当然也可以加入卡尔曼滤波，采集会更准确，ADC采集的卡尔曼滤波网上有很多。

基础配置

GPIO对应表
PA0 ——> ADC123_IN0
PA1 ——> ADC123_IN1
PB0 ——> ADC12_IN8
PB1 ——> ADC12_IN9
PC1 ——> ADC12_IN11
PC2 ——> ADC123_IN12
PC4 ——> ADC12_IN14
PC5 ——> ADC12_IN15

void RCC_Configuration()
{
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOC 
					|RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE | RCC_AHB1Periph_GPIOF 
					|RCC_AHB1Periph_CRC | RCC_AHB1Periph_GPIOG | RCC_AHB1Periph_DMA2 | RCC_AHB1Periph_DMA1
					, ENABLE);	
				
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG | RCC_APB1Periph_SPI2 | RCC_APB1Periph_SPI3
					 |RCC_APB1Periph_USART2 |RCC_APB1Periph_USART3| RCC_APB1Periph_TIM2 ,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_ADC1| RCC_APB2Periph_TIM9
						   | RCC_APB2Periph_SPI1 | RCC_APB2Periph_SYSCFG| RCC_APB1Periph_USART2 | RCC_APB2Periph_USART6 ,ENABLE);
                        
}
void GPIO_Config(void)
{
	//AD Sample-----------------------------------------------
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOB, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOC, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1| GPIO_Pin_4;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOC, &GPIO_InitStructure);

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_Init(GPIOC, &GPIO_InitStructure);
}

ADC配置

#define ADC_SAMPLE_PNUM             100//AD 采样点数数  100
#define ADC_SAMPLE_CNUM             8//AD 采样通道数
 volatile unsigned short m_ADCValue[ADC_SAMPLE_PNUM][ADC_SAMPLE_CNUM] = {0};
void ADC_Config_Conver(void)
{
	DMA_InitTypeDef    	  DMA_InitStructure;
	ADC_InitTypeDef       ADC_InitStructure;
	ADC_CommonInitTypeDef ADC_CommonInitStructure;
	
	DMA_Cmd(DMA2_Stream0, DISABLE); 
	DMA_InitStructure.DMA_Channel = DMA_Channel_0;  
	DMA_InitStructure.DMA_PeripheralBaseAddr = (unsigned int)&(ADC1->DR);
	DMA_InitStructure.DMA_Memory0BaseAddr = (unsigned int)&m_ADCValue;
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
	DMA_InitStructure.DMA_BufferSize = ADC_SAMPLE_PNUM*ADC_SAMPLE_CNUM;
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
	DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
	DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
	DMA_InitStructure.DMA_Priority = DMA_Priority_High;  
	DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
	DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
	DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
	DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
	DMA_Init(DMA2_Stream0, &DMA_InitStructure);

//    //双缓冲模式设置
//    DMA_DoubleBufferModeConfig(DMA2_Stream0,(uint32_t)(u16 *)(m_ADCValue1),DMA_Memory_0);    //DMA_Memory_0首先被传输
//    DMA_DoubleBufferModeCmd(DMA2_Stream0,ENABLE);	
    		
	ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
	ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;//预分频
	ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
	ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_20Cycles;//采样间隔
	ADC_CommonInit(&ADC_CommonInitStructure);

	/* ADC1 Init ****************************************************************/
	ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
	ADC_InitStructure.ADC_ScanConvMode = ENABLE;
	ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
	ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
	ADC_InitStructure.ADC_ExternalTrigConv =  0;
	ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
	ADC_InitStructure.ADC_NbrOfConversion = ADC_SAMPLE_CNUM;
	ADC_Init(ADC1, &ADC_InitStructure);

	
	ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
	ADC_DMACmd(ADC1, ENABLE);
	ADC_Cmd(ADC1, ENABLE);
	DMA_Cmd(DMA2_Stream0, ENABLE);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 3, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 4, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_15,5,ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_14,6, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_11,7, ADC_SampleTime_480Cycles);
	ADC_RegularChannelConfig(ADC1, ADC_Channel_12,8, ADC_SampleTime_480Cycles);

	ADC_SoftwareStartConv(ADC1);
}

读取数据

u16 ADC_Proc_Value(unsigned char nIndex)
{
	u32 nValue = 0;
	u32 nSum = 0;
	u8 i = 0, j = 0;
	u16 Temp = 0;	
	u16 tempArray[ADC_SAMPLE_PNUM] = {0};

	for	(i=0; i<ADC_SAMPLE_PNUM; i++)					//采集10组
	{
		tempArray[i] = m_ADCValue[i][nIndex];
//		printf("\t\t\t******ADCValue:%X\r\n",tempArray[i]);
	}
	for(i=0; i<ADC_SAMPLE_PNUM-1; i++)						//去掉最大值
	{
		for(j = i+1; j< ADC_SAMPLE_PNUM ;j++){
			if(tempArray[j] < tempArray[i])
			{
				Temp = tempArray[i];
				tempArray[i] = tempArray[j];
				tempArray[j] = Temp;
			}
		}
	}	
	for(i=10; i<ADC_SAMPLE_PNUM-10; i++)						//取平均值  debug
	{
		nSum += tempArray[i] ;
	}
	nValue = nSum / (ADC_SAMPLE_PNUM-20);//debug
	return nValue;
}
int main(void)
{
    int sum;
    u8 i,j;
    RCC_Configuration();
    GPIO_Config();
    float ADC_Value[ADC_SAMPLE_CNUM];//用来保存经过转换得到的电压值
    ADC_Config_Conver();
    while(1)
    {
        for(i=0; i<ADC_SAMPLE_CNUM ; i++)
        {
            ADC_Value[i]=ADC_Proc_Value(i);//求平均值并转换成电压值
            ADC_Value[i]=(float)(ADC_Value[i]/4096)*3.3;//求平均值并转换成电压值            
			printf("ADC_Value[d%]:%.2f\r\n", i, ADC_Value[i]);
        }
    }
}