ov2640摄像头在stm32f407vet6，调试程序发现无法进入DCIM中断服务程序

Victor738494

ov2640摄像头在stm32f407vet6，调试程序发现无法进入DCIM中断服务程序，无法完成后续步骤，可能是那里有问题呢？接线再三确认过正确，GPIO配置也正确。

Victor738494

void DCMI_IRQHandler(void)
{
        if(DCMI_GetITStatus(DCMI_IT_FRAME)==SET)//2¶»ñμ½ò»Ö¡í¼Ïñ
        {
                jpeg_data_process();         //jpegêy¾Y′|àí       
                DCMI_ClearITPendingBit(DCMI_IT_FRAME);//Çå3yÖ¡ÖD¶Ï
                LED1=!LED1;
                ov_frame++;  
        }
}
//DCMI DMAÅäÖÃ
//DMA_Memory0BaseAddr:′æ′￠Æ÷μØÖ·    ½«òa′æ′￠éãÏñí·êy¾YμÄÄú′æμØÖ·(ò2¿éòÔêÇíaéèμØÖ·)
//DMA_BufferSize:′æ′￠Æ÷3¤¶è    0~65535
//DMA_MemoryDataSize:′æ′￠Æ÷λ¿í  
//DMA_MemoryDataSize:′æ′￠Æ÷λ¿í    @defgroup DMA_memory_data_size MA_MemoryDataSize_Byte/DMA_MemoryDataSize_HalfWord/DMA_MemoryDataSize_Word
//DMA_MemoryInc:′æ′￠Æ÷Ôö3¤·½ê½  @defgroup DMA_memory_incremented_mode  /** @defgroup DMA_memory_incremented_mode : DMA_MemoryInc_Enable/DMA_MemoryInc_Disable
void DCMI_DMA_Init(u32 DMA_Memory0BaseAddr,u16 DMA_BufferSize,u32 DMA_MemoryDataSize,u32 DMA_MemoryInc)
{
        DMA_InitTypeDef  DMA_InitStructure;
       
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);//DMA2ê±Öóê1Äü
        DMA_DeInit(DMA2_Stream1);
        while (DMA_GetCmdStatus(DMA2_Stream1) != DISABLE){}//μè′yDMA2_Stream1¿éÅäÖÃ
       
  /* ÅäÖÃ DMA Stream */
  DMA_InitStructure.DMA_Channel = DMA_Channel_1;  //í¨μà1 DCMIí¨μà
  DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&DCMI->DR;//íaéèμØÖ·ÎaCMI->DR
  DMA_InitStructure.DMA_Memory0BaseAddr = DMA_Memory0BaseAddr;//DMA ′æ′￠Æ÷0μØÖ·
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;//íaéèμ½′æ′￠Æ÷Ä￡ê½
  DMA_InitStructure.DMA_BufferSize = DMA_BufferSize;//êy¾Y′«êäá¿
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//íaéè·ÇÔöá¿Ä￡ê½
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc;//′æ′￠Æ÷Ôöá¿Ä￡ê½
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;//íaéèêy¾Y3¤¶è:32λ
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize;//′æ′￠Æ÷êy¾Y3¤¶è
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;// ê1óÃÑ-»·Ä￡ê½
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;//¸ßóÅÏ輶
  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable; //FIFOÄ￡ê½        
  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;//ê1óÃè«FIFO
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;//íaéèí»·￠μ￥′Î′«êä
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;//′æ′￠Æ÷í»·￠μ￥′Î′«êä
  DMA_Init(DMA2_Stream1, &DMA_InitStructure);//3õê¼»ˉDMA Stream
       
}
//DCMI3õê¼»ˉ
void My_DCMI_Init(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;

       
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA|RCC_AHB1Periph_GPIOB|RCC_AHB1Periph_GPIOC|RCC_AHB1Periph_GPIOE, ENABLE);//ê1ÄüGPIOA B C E ê±Öó
        RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_DCMI,ENABLE);//ê1ÄüDCMIê±Öó
  //PA4/83õê¼»ˉéèÖÃ
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_8;//PA4/8   ¸′óÃ1|Äüêä3ö
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //¸′óÃ1|Äüêä3ö
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//íÆíìêä3ö
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//éÏà-
  GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉ
       
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_6;// PB6/7   ¸′óÃ1|Äüêä3ö
  GPIO_Init(GPIOB, &GPIO_InitStructure);//3õê¼»ˉ
       
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_11;//PC6/7/8/9/11 ¸′óÃ1|Äüêä3ö
  GPIO_Init(GPIOC, &GPIO_InitStructure);//3õê¼»ˉ       

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6;//PE5/6  ¸′óÃ1|Äüêä3ö
  GPIO_Init(GPIOE, &GPIO_InitStructure);//3õê¼»ˉ       

        GPIO_PinAFConfig(GPIOA,GPIO_PinSource4,GPIO_AF_DCMI); //PA4,AF13  DCMI_HSYNC
        GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_DCMI); //PA8,AF13  DCMI_PCLK  
        GPIO_PinAFConfig(GPIOB,GPIO_PinSource7,GPIO_AF_DCMI); //PB7,AF13  DCMI_VSYNC
        GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_DCMI); //PC6,AF13  DCMI_D0  
        GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_DCMI); //PC7,AF13  DCMI_D1
        GPIO_PinAFConfig(GPIOC,GPIO_PinSource8,GPIO_AF_DCMI); //PC8,AF13  DCMI_D2
        GPIO_PinAFConfig(GPIOC,GPIO_PinSource9,GPIO_AF_DCMI); //PC9,AF13  DCMI_D3
        GPIO_PinAFConfig(GPIOC,GPIO_PinSource11,GPIO_AF_DCMI);//PC11,AF13 DCMI_D4
        GPIO_PinAFConfig(GPIOB,GPIO_PinSource6,GPIO_AF_DCMI); //PB6,AF13  DCMI_D5
        GPIO_PinAFConfig(GPIOE,GPIO_PinSource5,GPIO_AF_DCMI); //PE5,AF13  DCMI_D6
        GPIO_PinAFConfig(GPIOE,GPIO_PinSource6,GPIO_AF_DCMI); //PE6,AF13  DCMI_D7

       
        DCMI_DeInit();//Çå3yÔ-à′μÄéèÖÃ


  DCMI_InitStructure.DCMI_CaptureMode=DCMI_CaptureMode_Continuous;//á¬DøÄ￡ê½
        DCMI_InitStructure.DCMI_CaptureRate=DCMI_CaptureRate_All_Frame;//è«Ö¡2¶»ñ
        DCMI_InitStructure.DCMI_ExtendedDataMode= DCMI_ExtendedDataMode_8b;//8λêy¾Y¸ñê½  
        DCMI_InitStructure.DCMI_HSPolarity= DCMI_HSPolarity_Low;//HSYNC μíμçƽóDD§
        DCMI_InitStructure.DCMI_PCKPolarity= DCMI_PCKPolarity_Rising;//PCLK éÏéyÑØóDD§
        DCMI_InitStructure.DCMI_SynchroMode= DCMI_SynchroMode_Hardware;//ó2¼tí¬2½HSYNC,VSYNC
        DCMI_InitStructure.DCMI_VSPolarity=DCMI_VSPolarity_Low;//VSYNC μíμçƽóDD§
        DCMI_Init(&DCMI_InitStructure);

        DCMI_ITConfig(DCMI_IT_FRAME,ENABLE);//¿aÆôÖ¡ÖD¶Ï
       
        DCMI_Cmd(ENABLE);        //DCMIê1Äü

  NVIC_InitStructure.NVIC_IRQChannel = DCMI_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;//ÇàÕ¼óÅÏ輶1
        NVIC_InitStructure.NVIC_IRQChannelSubPriority =2;                //×óóÅÏ輶3
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                        //IRQí¨μàê1Äü
        NVIC_Init(&NVIC_InitStructure);        //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷¡￠

}

翼行园子

2640配置确认都没有问题么 如果是用杜邦线接的 建议换短一点的去试下

电气明铭

你用的是红板OV2640?

电气明铭

VET6与ZGT6的引脚数不一样，要改硬件接线！

hhh·

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