求助：在用F207ig中DMA的时候，配置完dma参数后，使用库函数使能DMA,但是，不成功，为什么？

yuxiuchang88

DMA_InitTypeDef  DMA_InitStructure;
//  __IO uint32_t    Timeout = TIMEOUT_MAX;
   
  /* Enable DMA clock */
  RCC_AHB1PeriphClockCmd(DMA_STREAM_CLOCK, ENABLE);


//  RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_DMA2, ENABLE);
  
  /* Reset DMA Stream registers (for debug purpose) */
  DMA_DeInit(DMA_STREAM);

  /* Check if the DMA Stream is disabled before enabling it.
     Note that this step is useful when the same Stream is used multiple times:
     enabled, then disabled then re-enabled... In this case, the DMA Stream disable
     will be effective only at the end of the ongoing data transfer and it will
     not be possible to re-configure it before making sure that the Enable bit
     has been cleared by hardware. If the Stream is used only once, this step might
     be bypassed. */
  while (DMA_GetCmdStatus(DMA_STREAM) != DISABLE)
  {
  }
  /* Configure DMA Stream */
  DMA_InitStructure.DMA_Channel = DMA_CHANNEL;  
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI1_DR_Address;       
  DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)LCDBuffer;
  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
  DMA_InitStructure.DMA_BufferSize = (uint32_t)COLUMN_NUM-4;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  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(DMA_STREAM, &DMA_InitStructure);
   
  
     /* DMA Stream enable */
  
         DMA_Cmd(DMA_STREAM, ENABLE);
  while(DMA_GetCmdStatus(DMA_STREAM)!=ENABLE);             //就在这停了

之前用spi的时候是使能dma成功，并且进入中断了，但是在中断中关dma，然后出了中断后执行       
while(DMA_GetCmdStatus(DMA_STREAM)==ENABLE){｝时停下了，我的学习就卡在这里了，串口和spi都是调好了的，能成功发送数据，就是在dma这卡住的。
请大家帮帮忙啊

yuxiuchang88

自己顶顶

yuxiuchang88

发错地方了，不好意思

bbl

我现在也遇到一样的问题