此程序为BF609从摄像头读入至sdram中

/********主函数********/

InitEPPI2DMA();
InitEPPI2();

/****子程序里***/

void InitEPPI2DMA(void)
{
*pREG_DMA31_ADDRSTART = (void *)CmosBuffer1;

*pREG_DMA31_XCNT = IMAGE_WIDTH / 2;
*pREG_DMA31_XMOD = 0x4;
*pREG_DMA31_YCNT = IMAGE_HEIGHT;
*pREG_DMA31_YMOD = 0x4;

*pREG_DMA31_CFG = ENUM_DMA_CFG_WRITE |
       ENUM_DMA_CFG_MSIZE04 |
       ENUM_DMA_CFG_PSIZE04 |
       ENUM_DMA_CFG_ADDR2D |
       ENUM_DMA_CFG_SYNC |
       ENUM_DMA_CFG_STOP |
       BITM_DMA_CFG_INT;
      //ENUM_DMA_CFG_AUTO;
ssync();
}

void InitEPPI2()
{
*pREG_EPPI2_CTL=0;
*pREG_EPPI2_CTL = ENUM_EPPI_CTL_RXMODE |
       ENUM_EPPI_CTL_PACK_EN|
       ENUM_EPPI_CTL_DLEN08 |
       ENUM_EPPI_CTL_NON656 |
       ENUM_EPPI_CTL_SYNC2
       ;

ssync();
    *pREG_EPPI2_LINE = IMAGE_WIDTH*2;
    ssync();
*pREG_EPPI2_FRAME = IMAGE_HEIGHT;
ssync();
}

void EnableEPPI2_DMA(void)
{
    *pREG_DMA31_CFG |= ENUM_DMA_CFG_EN;
    ssync();
    *pREG_EPPI2_CTL |= ENUM_EPPI_CTL_EN;
    ssync();
}

void InitEPPI2Int(void)
{
ADI_INT_STATUS status;
   status = adi_int_InstallHandler((uint32_t)INTR_EPPI2_CH0_DMA ,adi_adrp_ctl_dma31callback,(void*)0,true);
   adi_int_EnableInt(INTR_EPPI2_CH0_DMA,true);

}

void adi_adrp_ctl_dma31callback(uint32_t iid, void* handlerArg)
{
uint16_t val = (uint16_t)0;
  val = *pREG_DMA31_STAT;
  *pREG_DMA31_STAT |= (uint16_t)(val & 0xffffffff);/* Write 1 to clear interrupt */
  val = *pREG_DMA31_STAT;
  *pREG_DMA31_STAT |= (uint16_t)(val & 0xffffffff);/* Write 1 to clear interrupt */
// adi_int_EnableInt(INTR_EPPI2_CH0_DMA,false);

  if (Frame0Flag == true)
   {
   Frame0Flag = false;
   *pREG_DMA31_ADDRSTART = CmosBuffer1;
   }
  else
      {
    Frame0Flag = true;
    *pREG_DMA31_ADDRSTART = CmosBuffer2;

      }
  EnableDMA35();
  EnableDMA37();
  EnablePixc();
  printf("dma31\n");
// adi_int_EnableInt(INTR_EPPI2_CH0_DMA,true);

  //adi_int_EnableInt(INTR_PIXC0_CH2_DMA,true);
}