双ADC无法完成采集的原因？

/*以下为ADC触发*/
/* time base configuration */
TIM_TimeBaseStructure.TIM_Period = BufferSize-1;
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* TIM2 channel2 configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;              
TIM_OCInitStructure.TIM_Pulse = 8;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
//TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;         
TIM_OC2Init(TIM2, &TIM_OCInitStructure);
TIM_SelectMasterSlaveMode(TIM8,TIM_MasterSlaveMode_Enable);// 主从模式
TIM_SelectSlaveMode(TIM2,TIM_SlaveMode_External1); //从模式 上升沿作为计数脉冲
TIM_ITRxExternalClockConfig(TIM2,TIM_TS_ITR1);
/* DMA1 Channel1 Configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_1RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设作为源
DMA_InitStructure.DMA_BufferSize =32;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
   
/* Enable DMA1 channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/
ADC_DeInit(ADC1);
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;  //ADC1 and ADC2 为同步规则模式
ADC_InitStructure.ADC_ScanConvMode = DISABLE;   //单通道模式
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  //循换模式
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T2_CC2;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 1, ADC_SampleTime_1Cycles5);
ADC_DMACmd(ADC1, ENABLE);
// /* ADC2 configuration ------------------------------------------------------*/
    ADC_DeInit(ADC2);
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC2, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC2, ADC_Channel_14, 1, ADC_SampleTime_1Cycles5);  
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 reset calibaration register */   
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));
  /* Enable ADC2 */
ADC_Cmd(ADC2, ENABLE);
/* Enable ADC2 reset calibaration register */   
ADC_ResetCalibration(ADC2);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC2));
/* Start ADC2 calibaration */
ADC_StartCalibration(ADC2);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC2));
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
TIM_CtrlPWMOutputs(TIM2, ENABLE);
TIM_Cmd(TIM8, ENABLE);
TIM_Cmd(TIM2, ENABLE);
DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);
双ADC无法完成采集,也无法跳DMA中断，不知道什么原因，触发时钟没有问题，就是无法完成AD转换啊。我是利用TIM2_CC2触发的，已经将ADC1设置为TIM2_CC2触发，ADC2为软件触发。ADC时钟使能，ADC端口都已经设置好了。