STM32F405RGT6 ADC2+TIM4触发+DMA(DMA2_Stream2_CH1)+DMA中断会死机，怎么解决？

ADC1+tiM4触发+DMA(DMA2_Stream0_CH0)+DMA中断完全正常更改为ADC2+TIM4触发+DMA(DMA2_Stream2_CH1)+DMA中断会死机(取消中断后完全正常)更改为ADC3+TIM4触发+DMA(DMA2_Stream1_CH2)+DMA中断会死机(取消中断后完全正常)
void ADC2_EXIT_TIM4_CC4_Trig_DMAConfiguration(unsigned short F_Prescaler,unsigned int F_ARR )//ADC_TIM4_CC4外部触发转换{
GPIO_InitTypeDef  GPIO_InitStructure;ADC_CommonInitTypeDef ADC_CommonInitStructure;ADC_InitTypeDef       ADC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//使能GPIOA时钟RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE); //使能ADC2时钟//RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);//使能GPIOC时钟RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);//DMA2时钟使能
// Configure PA5 PA4  PC2(ADC Channel 5-0-1-13) as analog input -------------------------GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//GPIO模式为ADC模拟输入模式GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 ;//选择PA5 PA4 为输入通道GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//端口速度50MHzGPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//不带上下拉GPIO_Init(GPIOA, &GPIO_InitStructure);
// ADC2 configuration -----------------------------------------------------// ADCs DeInit RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2,ENABLE);   //ADC2复位RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC2,DISABLE);    //复位结束RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE); //使能ADC2时钟
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12位模式ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;;//连续转换模式 使用(连续模式)ADC_InitStructure.ADC_ScanConvMode = DISABLE;;//扫面模式 使用（扫描）ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Falling;//禁止触发检测，使用软件触发ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T4_CC4;//外部触发源 外部引脚 (已经禁止触发检测了)ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//右对齐ADC_InitStructure.ADC_NbrOfConversion = 1;//指定规则组转换的通道 5个通道ADC_Init(ADC2, &ADC_InitStructure);//ADC初始化
ADC_RegularChannelConfig(ADC2, ADC_Channel_5, 1,  ADC_SampleTime_3Cycles);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;//独立模式ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;//两个采样阶段之间的延迟5个时钟ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //DMA使能模式ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;//预分频4分频。ADCCLK=PCLK2/4=84/4=21Mhz,ADC时钟最好不要超过36MhzADC_CommonInit(&ADC_CommonInitStructure);//初始化
ADC_DMARequestAfterLastTransferCmd(ADC2,ENABLE);    //单通道使用//ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);ADC_DMACmd(ADC2,ENABLE);//使能ADC的DMA数据传送功能
ADC_Cmd(ADC2, ENABLE);//使能ADC2//  DMA2_Stream2_CH0[i]ADC configuration ----------------------------------------------DMA2_Stream2_CH1_ADC2_Config((uint32_t *)OSC_ADC_ConvertedValue,232,DMA_Mode_Circular);// DMA2_Stream2_CH1_ADC2_Config ADC DMANVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//配置中断优先级分组方式，整个程序只配置一次，可以放置在程序最开始
NVIC_InitTypeDef NVIC_InitStructure;NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream2_IRQn;//DMA2_Stream2中断占用通道NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断通道NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//配置中断抢占优先级值，分组2的值为0-3NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//配置中断响应优先级的值  分组2的值为0-3NVIC_Init(&NVIC_InitStructure);
DMA_Cmd(DMA2_Stream2, ENABLE);//打开DMA2 Stream0(或者使能)/[i] Enable DMA Channelx complete transfer interrupt ///  DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TC); //清除中断标志//  DMA_ITConfig(DMA2_Stream2, DMA_IT_TC, ENABLE);
// Start ADC2 Software Conversion
ADC_SoftwareStartConv(ADC2);        //使能指定的ADC2的软件转换启动功能
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;//配置定时器计时参数TIM_OCInitTypeDef TIM_OCInitStructure;//设置结构体
//开启TIM4时钟RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);        
//选择TIM4的时钟模式为内部模式，时钟源为内部时钟（42*2=84MHZ）TIM_InternalClockConfig(TIM4);                              
//初始化上述结构体TIM_TimeBaseStructInit(&TIM_TimeBaseInitStructure);
//配置预分频系数为8400TIM_TimeBaseInitStructure.TIM_Prescaler = F_Prescaler;
//配置自动重装值为10000TIM_TimeBaseInitStructure.TIM_Period = F_ARR;
//配置计数模式为向上计数TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;//配置定时器时钟频率与数字滤波器所使用的采样时钟之间的分频比TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1; //配置重复计数器的值为0TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
//初始化时基单元TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStructure);                                 
TIM_OCStructInit(&TIM_OCInitStructure);//给结构体设置默认初始值////配置TIM4 通道1占空比TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//输出比较模式 PWM1模式TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出比较极性，默认输出高电平TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//使能输出比较TIM_OCInitStructure.TIM_Pulse = 10;     //设置CCR数值 输出比较直0-FFFF(占空比-CCR/ARR)TIM_OC4Init(TIM4, &TIM_OCInitStructure);//初始化TIM4输出通道OC4
//选择更新事件作为触发输出TIM_SelectOutputTrigger(TIM4, TIM_TRGOSource_OC4Ref);
//开启TIM4，此时计数器开始工作TIM_Cmd(TIM4, ENABLE);
}
void DMA2_Stream2_IRQHandler(void) //DMA2_Stream2_IRQn{if(DMA_GetFlagStatus(DMA2_Stream2,DMA_FLAG_TCIF1))      //清除传输完成中断{DMA_ClearITPendingBit(DMA2_Stream2, DMA_IT_TCIF1); // 清除传输完成标志DMA_ClearFlag(DMA2_Stream2,DMA_FLAG_TCIF1);OSC_ADC_FLAG=1;TIM_Cmd(TIM4, DISABLE);}
if( DMA_GetFlagStatus(DMA2_Stream2,DMA_FLAG_HTIF1))       //清除半传输完成中断
{DMA_ClearFlag(DMA2_Stream2,DMA_FLAG_HTIF1);
}
// Clear the Streamx direct mode error flag if( DMA_GetFlagStatus(DMA2_Stream2,DMA_FLAG_DMEIF1))       //清除传输错误中断
{DMA_ClearFlag(DMA2_Stream2,DMA_FLAG_DMEIF1);
}
if( DMA_GetFlagStatus(DMA2_Stream2,DMA_FLAG_FEIF1))       //清除Streamx FIFO error flag
{DMA_ClearFlag(DMA2_Stream2,DMA_FLAG_FEIF1);
}
}
以上换成ADC1+TIM4+DMA+DMA中断工作完全正常 不清楚是什么原因