stm32f4 adc+dma 定时器控制adc dma中断进不去

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可能是因为adc采集有问题 导致dma没有足够的数据进不到中断 但我的adc配置有什么问题啊#define ADC_BUFF_LEN        500
#define Channel_Num 4


void ADC_DMA_Config(void)
{
        DMA_InitTypeDef  DMA_InitStructure;
        GPIO_InitTypeDef  GPIO_InitStructure;
        ADC_CommonInitTypeDef ADC_CommonInitStructure;
        ADC_InitTypeDef       ADC_InitStructure;
       
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//??GPIOA??
        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);//??GPIOC??
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); //??ADC1??
        RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);//DMA2????
        GPIO_InitStructure.GPIO_Pin =GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//ADC1_4,5,6,7
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//????
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//?????
  GPIO_Init(GPIOA, &GPIO_InitStructure);//???  


       
        RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE);          //ADC1??
        RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE);        //????         
       
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;//????
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;//???????????5???
  ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //DMA??,??????????
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;//???4???ADCCLK=PCLK2/4=84/4=21Mhz,ADC????????36Mhz
  ADC_CommonInit(&ADC_CommonInitStructure);//???
       
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12???
ADC_InitStructure.ADC_ScanConvMode = ENABLE;//??????
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//??????,???????,????
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_TRGO;  

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//???       
  ADC_InitStructure.ADC_NbrOfConversion = 4;//8????????? ??????8?????
  ADC_Init(ADC1, &ADC_InitStructure);//ADC???
  DMA_DeInit(DMA2_Stream0);
while (DMA_GetCmdStatus(DMA2_Stream0) != DISABLE){}//??DMA???        
/* ?? DMA Stream */
DMA_InitStructure.DMA_Channel = DMA_Channel_0;  //????
DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&ADC1->DR;//DMA????ADC1??????
DMA_InitStructure.DMA_Memory0BaseAddr =(u32)ADC_ConvertedValue;//?????
        DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;//?????
DMA_InitStructure.DMA_BufferSize = ADC_BUFF_LEN*Channel_Num;//?????
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;//???????
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;//???????
        DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//??????:16?
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//???????:16?
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;// ??????
        DMA_InitStructure.DMA_Priority = DMA_Priority_High;//??????
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
        DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;//?????????
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;//????????
DMA_Init(DMA2_Stream0, &DMA_InitStructure);//???DMA Stream
       
        DMA_ClearITPendingBit(DMA2_Stream0, DMA_IT_TC);
        DMA_ITConfig(DMA2_Stream0, DMA_IT_TC, ENABLE);
DMA_Cmd(DMA2_Stream0,ENABLE);       

        ADC_RegularChannelConfig(ADC1,ADC_Channel_4,1,ADC_SampleTime_15Cycles);
        ADC_RegularChannelConfig(ADC1,ADC_Channel_5,2,ADC_SampleTime_15Cycles);
        ADC_RegularChannelConfig(ADC1,ADC_Channel_6,3,ADC_SampleTime_15Cycles);
        ADC_RegularChannelConfig(ADC1,ADC_Channel_7,4,ADC_SampleTime_15Cycles);

        ADC_DMARequestAfterLastTransferCmd(ADC1,ENABLE);
       
ADC_DMACmd(ADC1,ENABLE);//??ADC?DMA
        ADC_Cmd(ADC1, ENABLE);//??AD???       
        //ADC_SoftwareStartConv(ADC1);                //?????ADC1?????????       
}
void NVIC_Config(void)
{
        NVIC_InitTypeDef NVIC_InitStructure;

        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//×î¸ßò»Î»óÃóúÅäÖÃÇàÕ¼óÅÏ輶￡¬μíèyλóÃóúÅäÖÃÏìó|óÅÏ輶
       
  NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;  
  NVIC_InitStructure.NVIC_IRQChannelSubPriority =1;        
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;            
  NVIC_Init(&NVIC_InitStructure);   

NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream0_IRQn;  
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;  
  NVIC_InitStructure.NVIC_IRQChannelSubPriority =1;        
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;           
  NVIC_Init(&NVIC_InitStructure);
}

void TIM3_Int_Init(u16 arr,u16 psc)
{       
       
        TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
        TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);  ///??TIM3??

  TIM_Cmd(TIM3, DISABLE);
          TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

  TIM_TimeBaseInitStructure.TIM_Period = arr;         //??????
  TIM_TimeBaseInitStructure.TIM_Prescaler=psc;  //?????
          TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;

        TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //??????
       
        TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure);//???TIM3
         TIM_ARRPreloadConfig(TIM3, ENABLE);
  TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Update);  

        TIM_Cmd(TIM3,ENABLE); //?????3
       
       
}


主程序里         TIM3_Int_Init(100,839);

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求大佬

peng1554

看能参考不: http://www.openedv.com/forum.php?mod=viewthread&tid=277863