STM32F0的多路ADC+DMA

uint16_t RegularConvData_Tab[2];   //这个数组在内存中用于存放ADC的结果

void ADC1_DMA_Init(void)
{
    GPIO_InitTypeDef    GPIO_InitStructure;
    DMA_InitTypeDef     DMA_InitStructure;
    ADC_InitTypeDef     ADC_InitStructure;

    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
    //RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 ;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
    //GPIO_Init(GPIOC, &GPIO_InitStructure);    
   
    GPIO_Init(GPIOA, &GPIO_InitStructure);    
        
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 , ENABLE);        
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
    
    ADC_DeInit(ADC1);//ADC»Ö¸´Ä¬ÈÏÉèÖà        

    DMA_DeInit(DMA1_Channel1);    /* DMA1 Channel1 Config */
    DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RegularConvData_Tab;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = 2;
    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_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel1, &DMA_InitStructure);
          
    DMA_Cmd(DMA1_Channel1, ENABLE);/* DMA1 Channel1 enable */            
    ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular); /* Enable ADC_DMA */    
    ADC_DMACmd(ADC1, ENABLE);  
    
    ADC_StructInit(&ADC_InitStructure);//³õʼ»¯ADC½á¹¹
    
    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE; 
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Backward;
    ADC_Init(ADC1, &ADC_InitStructure);
    
    ADC_ChannelConfig(ADC1, ADC_Channel_1 , ADC_SampleTime_239_5Cycles); /* Convert the ADC1 Channel 1 with 239.5 Cycles as sampling time */    //这里的顺序决定了RegularConvData_Tab[2]的取值顺序.
    ADC_ChannelConfig(ADC1, ADC_Channel_3 , ADC_SampleTime_239_5Cycles); /* Convert the ADC1 Channel 1 with 239.5 Cycles as sampling time */  
    //ADC_ChannelConfig(ADC1, ADC_Channel_13 , ADC_SampleTime_239_5Cycles); /* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */  

    //ADC_ChannelConfig(ADC1, ADC_Channel_TempSensor ,ADC_SampleTime_239_5Cycles);
    //ADC_TempSensorCmd(ENABLE);

    //ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint ,ADC_SampleTime_239_5Cycles);
    //ADC_VrefintCmd(ENABLE);
    
    //ADC_ChannelConfig(ADC1, ADC_Channel_Vbat ,ADC_SampleTime_239_5Cycles);
    //ADC_VbatCmd(ENABLE);
    
    ADC_GetCalibrationFactor(ADC1); /* ADC Calibration */  
    ADC_Cmd(ADC1, ENABLE);  /* Enable ADCperipheral[PerIdx] */      
    while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN)); /* Wait the ADCEN falg */
    ADC_StartOfConversion(ADC1); /* ADC1 regular Software Start Conv */
            
}

  printf("%d ",RegularConvData_Tab[0]);

最后可能要跟参考电压做一个比较得出比较值即电压值.