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Problem with DCMI FRAME interrupt ?

Question asked by t.muhammad on Jul 22, 2014
Latest reply on Jul 23, 2014 by Clive One
Hullo guys , I 'm trying to get my OV7670 cam working with STM32F207zg , and I have set up all required configurations , I want to get snapshot , transfer the frame to external SRAM , but the FRAME interrupt is never generated , while LINE interrupt is working fine , also the DMA flags r not set , HC/TC/ or even FIFO error , here is my code ,
    // Enable the Clck of the DCMI module
    RCC_AHB2PeriphClockCmd (RCC_AHB2Periph_DCMI , ENABLE);
    // Reset the DCMI Registers
RCC_AHB2PeriphResetCmd(RCC_AHB2Periph_DCMI, ENABLE);
   RCC_AHB2PeriphResetCmd(RCC_AHB2Periph_DCMI, DISABLE);
    //
    // Configure the DCMI
    DCMI_Struct.DCMI_CaptureMode=DCMI_CaptureMode_SnapShot;
    DCMI_Struct.DCMI_CaptureRate=DCMI_CaptureRate_All_Frame;
    DCMI_Struct.DCMI_ExtendedDataMode=DCMI_ExtendedDataMode_8b;
    DCMI_Struct.DCMI_HSPolarity=DCMI_HSPolarity_Low;
    DCMI_Struct.DCMI_PCKPolarity=DCMI_PCKPolarity_Rising;
    DCMI_Struct.DCMI_VSPolarity=DCMI_VSPolarity_High ;
    DCMI_Struct.DCMI_SynchroMode=DCMI_SynchroMode_Hardware;
    DCMI_Init(&DCMI_Struct);

// Enable the DCMI Interrupts
    DCMI_ITConfig(DCMI_IT_VSYNC, ENABLE);
  DCMI_ITConfig(DCMI_IT_LINE, ENABLE);
  DCMI_ITConfig(DCMI_IT_FRAME, ENABLE);
  DCMI_ITConfig(DCMI_IT_ERR, ENABLE);    //
    //
    // Enable the NVIC for the DCMI
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
    NVIC_DCMI.NVIC_IRQChannel=DCMI_IRQn;
    NVIC_DCMI.NVIC_IRQChannelCmd=ENABLE;
    NVIC_DCMI.NVIC_IRQChannelPreemptionPriority=1;
    NVIC_DCMI.NVIC_IRQChannelSubPriority=1;
    NVIC_Init(&NVIC_DCMI);
    //
    // Enable NVIC for DMA2 , Stream 1
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
    NVIC_DCMI.NVIC_IRQChannel=DMA2_Stream1_IRQn;
    NVIC_DCMI.NVIC_IRQChannelCmd=ENABLE;
    NVIC_DCMI.NVIC_IRQChannelPreemptionPriority=0;
    NVIC_DCMI.NVIC_IRQChannelSubPriority=1;
    NVIC_Init(&NVIC_DCMI);
    //
   
    //
    // Enable DMA2 Clock
     RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);  
    // Configure the DMA
     DMA_DCMI.DMA_Channel = DMA_Channel_1;  
  DMA_DCMI.DMA_PeripheralBaseAddr = DCMI_DR_ADDRESS;  // (0x50050028)
  DMA_DCMI.DMA_Memory0BaseAddr = 0x64000000; // Address of external SRAM
  DMA_DCMI.DMA_DIR = DMA_DIR_PeripheralToMemory;
  DMA_DCMI.DMA_BufferSize = 640*480*2/4;
  DMA_DCMI.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_DCMI.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_DCMI.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
  DMA_DCMI.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_DCMI.DMA_Mode = DMA_Mode_Normal;
  DMA_DCMI.DMA_Priority = DMA_Priority_High;
  DMA_DCMI.DMA_FIFOMode = DMA_FIFOMode_Enable;         
  DMA_DCMI.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_DCMI.DMA_MemoryBurst = DMA_MemoryBurst_Single;
  DMA_DCMI.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
    DMA_Init(DMA2_Stream1, &DMA_DCMI);
    DMA_ITConfig(DMA2_Stream1 , DMA_IT_TC , ENABLE);
    DMA_ITConfig(DMA2_Stream1 , DMA_IT_FE  , ENABLE);
    
    // Enable the Capture mode
    DCMI_Cmd(ENABLE);
    DCMI_CaptureCmd(ENABLE);
    
    DMA_Cmd(DMA2_Stream1, ENABLE);
//
//
Any ideas ?

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