stm32f302和stm32f103的ADC的外部触发不能进入桌面办

ADC中要选择TIM4_CC4 event，定时器中药选择TIM4_CC4 event的输出源

stm32f302中我已经选择了，但是用软件触发可以触发AD进入中断，可用定时器就不能触发AD进入中断，麻烦帮我看下我下面配置那里有错？谢谢。
AD中的配置代码
void ADC1_DMA_Configuration(void)                                //ADC²ÉÑù³õʼ»¯ÅäÖÃ
{
        GPIO_InitTypeDef  GPIO_InitStructure;
        ADC_InitTypeDef          ADC_InitStructure;
        ADC_CommonInitTypeDef  ADC_CommonInitStructure;
        DMA_InitTypeDef          DMA_InitStructure;

        /* Configure the ADC clock */  
        RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);
        /* Enable the  DMA1¡¢GPIOA ¡¢GPIOB and ADC1 Clock */
        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_ADC12, ENABLE);

        if (SysTick_Config(SystemCoreClock / 1000000))
        {
                while (1)
                {}
        }       
        /* Configure PA0/PA1/PA2/PA3/PA6/PA7/PB0/PB1 (ADC Channel1/2/3/4/5/10/15/11/12) in analog mode */
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3
                                                                 | GPIO_Pin_6 | GPIO_Pin_7;
        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_0 | GPIO_Pin_1;
        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AN;
        GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_NOPULL;
        GPIO_Init(GPIOB, &GPIO_InitStructure);  
       
        /* Configure DMA1_Channel1  */
        DMA_DeInit(DMA1_Channel1);
        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_ADDRESS;
        DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_ConvertedValue;
        DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
        DMA_InitStructure.DMA_BufferSize = 8;
        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_ITConfig(DMA1_Channel1,DMA_IT_TC,ENABLE);

        /* Enable DMA1 Channel1 */
        DMA_Cmd(DMA1_Channel1, ENABLE);
       
        /* Configure ADC1 */       
        ADC_DeInit(ADC1);
  
        /* Calibration procedure */
        ADC_VoltageRegulatorCmd(ADC1, ENABLE);
        /* Insert delay equal to 10us */
        Delay(10);
        ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);
        ADC_StartCalibration(ADC1);
  
        while(ADC_GetCalibrationStatus(ADC1) != RESET );
        calibration_value = ADC_GetCalibrationValue(ADC1);
       
        /* Configure the ADC1 in continuous mode */  
        ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;                                                                    
        ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;                  
        ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;            
        ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_Circular;                  
        ADC_CommonInitStructure.ADC_TwoSamplingDelay = 5;      
        ADC_CommonInit(ADC1, &ADC_CommonInitStructure);
  
        ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
        ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Disable;       
        ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_5;                                 //TIM4_CC4 event        
        ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_RisingEdge;
        ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
        ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;   
        ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;   
        ADC_InitStructure.ADC_NbrOfRegChannel = 8;
        ADC_Init(ADC1, &ADC_InitStructure);
  
        /* ADC1 regular channel1 configuration */
        ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 3, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 6, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 7, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 8, ADC_SampleTime_19Cycles5);
        ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 9, ADC_SampleTime_19Cycles5);
       
        /* Enable ADC1 */
        ADC_Cmd(ADC1, ENABLE);
        /* wait for ADRDY */
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));
  
        /* ADC1 DMA Enable */
        ADC_DMACmd(ADC1, ENABLE);
        ADC_DMAConfig(ADC1, ADC_DMAMode_Circular);
          TIM_Cmd(TIM4,ENABLE);
}定时器TIM4的配置代码：
void TIM4_Configuration(void)                //TIM4¶¨Ê±50usÈí¼þ´¥·¢×ª»»ADC1²ÉÑùת»»
{
        TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
        TIM_OCInitTypeDef TIM_OCInitStructure;
       
        /* TIM4 clock enable */
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
        /* Time Base configuration */       
        TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
        TIM_TimeBaseStructure.TIM_Period = 50;
        TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1;                                                //72M/(71+1) = 1,000,000 -->1us
        TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
        TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
        TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
       
        TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = 25;
        TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
        TIM_OC4Init(TIM4,&TIM_OCInitStructure);
       
        TIM_CtrlPWMOutputs(TIM4, ENABLE);

        TIM_Cmd(TIM4,ENABLE);       
        TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable);
}

定时器配置中少了void TIM_SelectOutputTrigger(TIM_TypeDef* TIMx, uint16_t TIM_TRGOSource)；这个函数，用这个配置输出触发信号

非常感谢你的回复，我试试，谢谢。

我选择的TIM_SelectOutputTrigger(TIM4,TIM_TRGOSource_Update);和TIM_SelectOutputTrigger(TIM4,TIM_TRGOSource_ENABLE);还是不能触发AD进入中断，到底我哪里配置有问题？

本帖最后由 风子 于 2015-6-5 14:31 编辑

刚刚帮你测试了下，ADC选TIM4_CC4不需要TIM_SelectOutputTrigger，ADC选择EXT12(TIM4_TRGO event) 才需要TIM_SelectOutputTrigger();你应该是其他地方的程序有问题，比如ADC配置或者中断配置//如果还不行，你把ADC触发信号换成EXT12(TIM4_TRGO event)试一下，TIM_SelectOutputTrigger这个函数选出来的应该是TIM4_TRGO event

我遇到同样问题，正在郁闷中