STM32F4XX DCMI问题

jxa19890929 · 发表于 2012-5-31 15:29:51

求DCMI的正确配置;我以下的配置问什么不对啊！数据时TVP5150传送输入的！！求高手！！

//DMA配置

DMA_InitTypeDef DMA_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2 , ENABLE);

DMA_DeInit(DMA2_Stream1);

while (DMA_GetCmdStatus(DMA2_Stream1) != DISABLE)
{
}

DMA_InitStructure.DMA_Channel = DMA_Channel_1;       //选择DMA通道
DMA_InitStructure.DMA_PeripheralBaseAddr = DCMI_BASE;          //DMA选择外设基址
DMA_InitStructure.DMA_Memory0BaseAddr = (u32)&video_dma_buf[0];     //DMA数据传入内存的基址
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;            //外设到存储器
DMA_InitStructure.DMA_BufferSize =38400;                            //空间大小传送最大数据空间
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;   //外设递增不使能
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;       //内存递增使能
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //数据位 8位
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;   //内存数据
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(DMA2_Stream1,&DMA_InitStructure);
DMA_ITConfig(DMA2_Stream1,DMA_IT_TC,ENABLE); //开中断
DMA_Cmd(DMA2_Stream1, ENABLE);

//DCMI配置

DCMI_InitTypeDef DCMI_InitStructure;

RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_DCMI , ENABLE);

DCMI_InitStructure.DCMI_CaptureMode = DCMI_CaptureMode_Continuous;   //利用DMA传输数据
DCMI_InitStructure.DCMI_SynchroMode = DCMI_SynchroMode_Embedded;   //嵌入式同步数据采集同步数据流中嵌入同步码
DCMI_InitStructure.DCMI_PCKPolarity = DCMI_PCKPolarity_Rising;    //像素时钟上升沿触发
DCMI_InitStructure.DCMI_VSPolarity = DCMI_VSPolarity_High;
DCMI_InitStructure.DCMI_HSPolarity = DCMI_HSPolarity_High;     //行活跃高
    DCMI_InitStructure.DCMI_CaptureRate = DCMI_CaptureRate_1of4_Frame;   //捕获所有1/4数据
DCMI_InitStructure.DCMI_ExtendedDataMode = DCMI_ExtendedDataMode_8b; //8位数据

DCMI_Init(&DCMI_InitStructure);

//TVP5150寄存器配置值
   { /* 0x00 1*/
            0x00,0x00         //视频输入源选择寄存器
    },
    { /* 0x01 2*/
            0x01,0x15         //模拟通道控制寄存器
    },
    { /* 0x02 3*/
            0x02,0x00         //操作模式控制寄存器
    },
    { /* 0x03 4*/
            0x03,0x7f         //杂项控制寄存器 //0d
    },
    { /* 0x04 5*/
            0x04,0xc0
    },
    { /* 0x06 6*/
            0x06,0x10
    },
    { /* 0x07 7*/
            0x07,0x40
    },
    { /* 0x08 8*/
            0x08,0x00
    },
    { /* 0x09 9*/
            0x09,0x80
    },
    { /* 0x0a 10*/
            0x0a,0x80
    },
    { /* 0x0b 11*/
            0x0b,0x00
    },
    { /* 0x0c 12*/
            0x0c,0x80
    },
    { /* 0x0d 13*/
            0x0d,0x47
    },
    { /* 0x0e 14*/
            0x0e,0x00
    },
    { /* 0x0f 15*/
            0x0f,0x08 //0x08
    },
    { /* 0x11 16*/
            0x11,0x00
    },
    { /* 0x12 17*/
            0x12,0x00
    },
    { /* 0x13 18*/
            0x13,0x00
    },
    { /* 0x14 19*/
            0x14,0x00
    },
    { /* 0x15 20*/
            0x15,0x01
    },
    { /* 0x16 21*/
            0x16,0x80
    },
    { /* 0x18 22*/
            0x18,0x00
    },
    { /* 0x19 23*/
            0x19,0x00
    },
    { /* 0x1a 24*/
            0x1a,0x0c
    },
    { /* 0x1b 25*/
            0x1b,0x14
    },
    { /* 0x1c 26*/
            0x1c,0x00
    },
    { /* 0x1d 27*/
            0x1d,0x00
    },
    { /* 0x1e 28*/
            0x1e,0x00
    },
    { /* 0x28 29*/
            0x28,0x00
    },
    { /* 0x2e 30*/
            0x2e,0x0f
    },
    { /* 0x2f 31*/
            0x2f,0x01
    },
    { /* 0xbb 32*/
            0xbb,0x00
    },
    { /* 0xc0 33*/
            0xc0,0x00
    },
    { /* 0xc1 34*/
            0xc1,0x00
    },
    { /* 0xc2 35*/
            0xc2,0x04
    },
    { /* 0xc8 36*/
            0xc8,0x80
    },
    { /* 0xc9 37*/
            0xc9,0x00
    },
    { /* 0xca 38*/
            0xca,0x00
    },
    { /* 0xcb 39*/
            0xcb,0x4e
    },
    { /* 0xcc 40*/
            0xcc,0x00
    },
    { /* 0xcd 41*/
            0xcd,0x01
    },
    { /* 0xcf 42*/
            0xcf,0x00
    },
    { /* 0xd0 43*/
            0xd0,0x00
    },
    { /* 0xfc 44*/
            0xfc,0x7f
    }

正点原子 · 发表于 2012-5-31 16:09:30

你总要说说你现在配置的结果吧...
病情描述都没有,华佗才知道你得什么病.可惜华佗死了....

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STM32F4XX DCMI问题

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