今天把stm32的dma配置成 DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToMemory;
结果从lcd上读回来的数据是乱的！！调了好久都不知道是什么原因~
有哪位高手调过类似的程序，就来指点指点我吧！！
顺便问一下：MemoryToMemory是双向模式，那怎么确定数据的走向呢？
附stm32f4_dma的配置函数：
//STM32F4XX_DMA传输配置

static void dmaRead(u16* dst ,u16 size)
{
  DMA_InitTypeDef  DMA_InitStructure;
  
  DMA_Cmd(DMA2_Stream0, DISABLE);
  //RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);  
    DMA_DeInit(DMA2_Stream0);
  while (DMA_GetCmdStatus(DMA2_Stream0) != DISABLE);
  //配置DMA流
  DMA_InitStructure.DMA_Channel =  DMA_Channel_0;
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(0X60000000); //
  DMA_InitStructure.DMA_Memory0BaseAddr = (u32)dst;
  DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToMemory;
  DMA_InitStructure.DMA_BufferSize = size; /* assert_param(0~64K) */
  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_Normal;//正常模式
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;        
  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
 
 DMA_Init(DMA2_Stream0, &DMA_InitStructure);
 DMA_Cmd(DMA2_Stream0, ENABLE);
 
  while ((DMA_GetCmdStatus(DMA2_Stream0) != ENABLE));
 
}