求帮助F407USAMRT和DMA冲突 请问是什么情况啊？

那远远的云端

DMA_InitTypeDef  DMA_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);//DMA2时钟使能
DMA_DeInit(DMA2_Stream4);

while (DMA_GetCmdStatus(DMA2_Stream4) != DISABLE){}//等待DMA可配置 

  /* 配置 DMA Stream */
  DMA_InitStructure.DMA_Channel = DMA_Channel_0;  //通道选择
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&ADC1->DR;//DMA外设地址
  DMA_InitStructure.DMA_Memory0BaseAddr = (u32)&num_1;//DMA 存储器0地址
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;//外设到存储器模式
  DMA_InitStructure.DMA_BufferSize = 16;//数据传输量 
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//外设地址固定
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址递增
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;//半字
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//存储器数据长度:16位
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//循环传输 
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;//优先级
  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;         
  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;//存储器突发单次传输
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;//外设突发单次传输
  
  DMA_Cmd(DMA2_Stream4, DISABLE);                      //关闭DMA传输 
  while (DMA_GetCmdStatus(DMA2_Stream4) != DISABLE){} //确保DMA可以被设置  
  DMA_Init(DMA2_Stream4, &DMA_InitStructure);//初始化DMA Stream
  DMA_Cmd(DMA2_Stream4, ENABLE);       DMA配置ADC1的 

USMART只把定时器4改成了定时器5

那远远的云端

不好意思 已经解决 
原因DMA数据传输量 与存储数组大小不一致 
晚上弄的代码  光改了ADC与DMA里边 忘记了数组大小