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STM32
STM32F407discovery DCMI驱动OV7670问题？
2019-07-20 17:39
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站内问答
/
STM32/STM8
16015
8
985
用论坛上的一个大神
的DCMI相机程序，移植到手头上的STM32F407discovery，摄像头出来的信号是下图所示的.
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8条回答
chenweigang
1楼-- · 2019-07-20 21:18
回复【楼主位】chenweigang:
---------------------------------
不知道是怎么回事 上程序：
GPIO_InitTypeDef GPIO_InitStructure;
DCMI_InitTypeDef DCMI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_DCMI, ENABLE);//DCMI
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);//DMA2
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB |
RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOE, ENABLE);//使能DCMI的GPIO时钟
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_MCO); //MCO1
A8
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
RCC_MCO2Config(RCC_MCO1Source_PLLCLK, RCC_MCO1Div_3); //168/3=56M XCLCK
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //PE5
WRDOWN
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_ResetBits(GPIOE, GPIO_Pin_5); //power on
GPIO_PinAFConfig(GPIOA, GPIO_PinSource4, GPIO_AF_DCMI); //DCMI_HSYNC -PA4
GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_PIXCLK -PA6
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_D5 -PB6
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_DCMI); //DCMI_VSYNC -PB7
GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_DCMI); //DCMI_D6 -PB8
GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_DCMI); //DCMI_D7 -PB9
GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_D0 -PC6
GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_DCMI); //DCMI_D1 -PC7
GPIO_PinAFConfig(GPIOE, GPIO_PinSource0, GPIO_AF_DCMI); //DCMI_D2 -PE0
GPIO_PinAFConfig(GPIOE, GPIO_PinSource1, GPIO_AF_DCMI); //DCMI_D3 -PE1
GPIO_PinAFConfig(GPIOE, GPIO_PinSource4, GPIO_AF_DCMI); //DCMI_D4 -PE4
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6;
GPIO_Init(GPIOA, &GPIO_InitStructure);
CSPin_init(); //拉高SPI1的所有片选信号,以避免干扰.
DCMI_DeInit();
DCMI_InitStructure.DCMI_CaptureMode = DCMI_CaptureMode_Continuous;
DCMI_InitStructure.DCMI_SynchroMode = DCMI_SynchroMode_Hardware;
DCMI_InitStructure.DCMI_PCKPolarity = DCMI_PCKPolarity_Falling;
DCMI_InitStructure.DCMI_VSPolarity = DCMI_VSPolarity_High;
DCMI_InitStructure.DCMI_HSPolarity = DCMI_HSPolarity_High;
DCMI_InitStructure.DCMI_CaptureRate = DCMI_CaptureRate_All_Frame;
DCMI_InitStructure.DCMI_ExtendedDataMode = DCMI_ExtendedDataMode_8b;
DCMI_Init(&DCMI_InitStructure);
DCMI_NVIC_Config();
DCMI_ITConfig(DCMI_IT_FRAME,ENABLE);//DCMI中断
DMA_DeInit(DMA2_Stream1);
DMA_InitStructure.DMA_Channel = DMA_Channel_1;
DMA_InitStructure.DMA_PeripheralBaseAddr = DCMI_DR_ADDRESS;
DMA_InitStructure.DMA_Memory0BaseAddr = FSMC_LCD_ADDRESS;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
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_Stream1, &DMA_InitStructure);
摄像头OV7670初始化
static const u8 OV7670_reg[OV7670_REG_NUM][2]=
{
{0x3a, 0x0c},
{0x40, 0xd0},
{0x12, 0x14},
{0x32, 0x80},
{0x17, 0x16},
{0x18, 0x04},
{0x19, 0x02},//ó°?ì
{0x1a, 0x7a},//0x7a,
{0x03, 0x03},//ó°?ì
{0x3e, 0x00},//
{0x70, 0x00},
{0x71, 0x00},
{0x72, 0x11},
{0x73, 0x00},//
{0xa2, 0x02},
{0x11, 0x00},
{0x7a, 0x20},
{0x7b, 0x1c},
{0x7c, 0x28},
{0x7d, 0x3c},
{0x7e, 0x55},
{0x7f, 0x68},
{0x80, 0x76},
{0x81, 0x80},
{0x82, 0x88},
{0x83, 0x8f},
{0x84, 0x96},
{0x85, 0xa3},
{0x86, 0xaf},
{0x87, 0xc4},
{0x88, 0xd7},
{0x89, 0xe8},
{0x13, 0xe7},
{0x00, 0x00},//AGC
{0x10, 0x00},
{0x0d, 0x00},
{0x14, 0x31},//0x38, limit the max gain
{0xa5, 0x05},
{0xab, 0x07},
{0x24, 0x75},
{0x25, 0x63},
{0x26, 0xA5},
{0x9f, 0x78},
{0xa0, 0x68},
{0xa1, 0x03},
{0xa6, 0xdf},
{0xa7, 0xdf},
{0xa8, 0xf0},
{0xa9, 0x90},
{0xaa, 0x94},
{0x13, 0xe7},
{0x0e, 0x61},
{0x0f, 0x82},
{0x16, 0x02},
{0x1e, 0x07},
{0x21, 0x02},
{0x22, 0x91},
{0x29, 0x07},
{0x33, 0x0b},
{0x35, 0x0b},
{0x37, 0x1d},
{0x38, 0x71},
{0x39, 0x2a},//
{0x3c, 0x78},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x0c},
{0x6b, 0x00},//PLL
{0x74, 0x19},
{0x8d, 0x4f},
{0x8e, 0x00},
{0x8f, 0x00},
{0x90, 0x00},
{0x91, 0x00},
{0x92, 0x00},
{0x96, 0x00},
{0x9a, 0x80},
{0xb0, 0x84},
{0xb1, 0x0c},
{0xb2, 0x0e},
{0xb3, 0x82},
{0xb8, 0x0a},
{0x43, 0x14},
{0x44, 0xf0},
{0x45, 0x34},
{0x46, 0x58},
{0x47, 0x28},
{0x48, 0x3a},
{0x59, 0x88},
{0x5a, 0x88},
{0x5b, 0x44},
{0x5c, 0x67},
{0x5d, 0x49},
{0x5e, 0x0e},
{0x64, 0x04},
{0x65, 0x20},
{0x66, 0x05},
{0x94, 0x04},
{0x95, 0x08},
{0x6c, 0x0a},
{0x6d, 0x55},
{0x6e, 0x11},
{0x6f, 0x9f},//0x9e for advance AWB
{0x6a, 0x40},
{0x01, 0x40},
{0x02, 0x40},
{0x13, 0xe7},
{0x15, 0x18},
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x00},
{0x75, 0x05},
{0x76, 0xe1},
{0x4c, 0x00},
{0x77, 0x01},
{0x3d, 0xc0},
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38},
{0x56, 0x40},
{0x34, 0x11},
{0x3b, 0x12},
{0xa4, 0x89},
{0x96, 0x00},
{0x97, 0x30},
{0x98, 0x20},
{0x99, 0x30},
{0x9a, 0x84},
{0x9b, 0x29},
{0x9c, 0x03},
{0x9d, 0x4c},
{0x9e, 0x3f},
{0x78, 0x04},
{0x79, 0x01},
{0xc8, 0xf0},
{0x79, 0x0f},
{0xc8, 0x00},
{0x79, 0x10},
{0xc8, 0x7e},
{0x79, 0x0a},
{0xc8, 0x80},
{0x79, 0x0b},
{0xc8, 0x01},
{0x79, 0x0c},
{0xc8, 0x0f},
{0x79, 0x0d},
{0xc8, 0x20},
{0x79, 0x09},
{0xc8, 0x80},
{0x79, 0x02},
{0xc8, 0xc0},
{0x79, 0x03},
{0xc8, 0x40},
{0x79, 0x05},
{0xc8, 0x30},
{0x79, 0x26},
{0x09, 0x03},
{0x55, 0x00},
{0x56, 0x40},
{0x3b, 0x42},
{0x07, 0x08},
{0x10, 0x80},
};
加载中...
supereally
2楼-- · 2019-07-21 01:16
我也是这样的花屏，问下原子哥如何设置OV7670的分辨率，如我需要120*160 和240*320的分辨率怎么设置，
还有如何调用这个函数 void OV7670_HW(u16 hstart,u16 vstart,u16 hstop,u16 vstop) 。。
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正点原子
3楼-- · 2019-07-21 01:44
精彩回答 2 元偷偷看……
加载中...
刺客mfl
4楼-- · 2019-07-21 06:47
精彩回答 2 元偷偷看……
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麦田稻草
5楼-- · 2019-07-21 07:16
试一下我的吧，很多时候是初始化问题，下面寄存器初始化数组在我的板上运行没问题。
#define OV7670_REG_NUM sizeof(OV7670_reg)/2
static const u8 OV7670_reg[][2]=
{
{0x3a, 0x04},
{0x40, 0xd0},
{0x12, 0x14}, //COM7
{0x32, 0x80},
{0x17, 0x16},
{0x18, 0x04},
{0x19, 0x02},
{0x1a, 0x7a},//0x7a,
{0x03, 0x05},//0x0a,
{0x0c, 0x00},
{0x3e, 0x00},//
{0x70, 0x00},
{0x71, 0x01},
{0x72, 0x11},
{0x73, 0x00},//
{0xa2, 0x02},
{0x11, 0x81},
{0x7a, 0x20},
{0x7b, 0x1c},
{0x7c, 0x28},
{0x7d, 0x3c},
{0x7e, 0x55},
{0x7f, 0x68},
{0x80, 0x76},
{0x81, 0x80},
{0x82, 0x88},
{0x83, 0x8f},
{0x84, 0x96},
{0x85, 0xa3},
{0x86, 0xaf},
{0x87, 0xc4},
{0x88, 0xd7},
{0x89, 0xe8},
{0x13, 0xe0},
{0x00, 0x00},//AGC
{0x10, 0x00},
{0x0d, 0x00},
{0x14, 0x28},//0x38, limit the max gain
{0xa5, 0x05},
{0xab, 0x07},
{0x24, 0x75},
{0x25, 0x63},
{0x26, 0xA5},
{0x9f, 0x78},
{0xa0, 0x68},
{0xa1, 0x03},//0x0b,
{0xa6, 0xdf},//0xd8,
{0xa7, 0xdf},//0xd8,
{0xa8, 0xf0},
{0xa9, 0x90},
{0xaa, 0x94},
{0x13, 0xe5},
{0x0e, 0x61},
{0x0f, 0x4b},
{0x16, 0x02},
{0x1e, 0x07},//0x07,
{0x21, 0x02},
{0x22, 0x91},
{0x29, 0x07},
{0x33, 0x0b},
{0x35, 0x0b},
{0x37, 0x1d},
{0x38, 0x71},
{0x39, 0x2a},
{0x3c, 0x78},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x55},
{0x6b, 0x0a},//PLL 重要参数 0x0a:不倍频，0x4a:4倍频
{0x74, 0x19},
{0x8d, 0x4f},
{0x8e, 0x00},
{0x8f, 0x00},
{0x90, 0x00},
{0x91, 0x00},
{0x92, 0x00},//0x19,//0x66
{0x96, 0x00},
{0x9a, 0x80},
{0xb0, 0x84},
{0xb1, 0x0c},
{0xb2, 0x0e},
{0xb3, 0x82},
{0xb8, 0x0a},
{0x43, 0x14},
{0x44, 0xf0},
{0x45, 0x34},
{0x46, 0x58},
{0x47, 0x28},
{0x48, 0x3a},
{0x59, 0x88},
{0x5a, 0x88},
{0x5b, 0x44},
{0x5c, 0x67},
{0x5d, 0x49},
{0x5e, 0x0e},
{0x64, 0x04},
{0x65, 0x20},
{0x66, 0x05},
{0x94, 0x04},
{0x95, 0x08},
{0x6c, 0x0a},
{0x6d, 0x55},
{0x6e, 0x11},
{0x6f, 0x9f},//0x9e for advance AWB
{0x6a, 0x40},
{0x01, 0x40},
{0x02, 0x40},
{0x13, 0xe7},
{0x15, 0x08}, //重要参数
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x55, 0x0A},//亮度
{0x56, 0x4f},//对比度
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x05},//边缘增强调整
{0x75, 0x05},
{0x76, 0xe1},
{0x4c, 0x0F},//噪声抑制强度
{0x77, 0x0a},
{0x3d, 0xc2},//0xc0,
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38},
{0x34, 0x11},
{0x3b, 0x0A},//0x00,//0x02,
{0xa4, 0x89},//0x88,
{0x96, 0x00},
{0x97, 0x30},
{0x98, 0x20},
{0x99, 0x30},
{0x9a, 0x84},
{0x9b, 0x29},
{0x9c, 0x03},
{0x9d, 0x4c},
{0x9e, 0x3f},
{0x78, 0x04},
{0x79, 0x01},
{0xc8, 0xf0},
{0x79, 0x0f},
{0xc8, 0x00},
{0x79, 0x10},
{0xc8, 0x7e},
{0x79, 0x0a},
{0xc8, 0x80},
{0x79, 0x0b},
{0xc8, 0x01},
{0x79, 0x0c},
{0xc8, 0x0f},
{0x79, 0x0d},
{0xc8, 0x20},
{0x79, 0x09},
{0xc8, 0x80},
{0x79, 0x02},
{0xc8, 0xc0},
{0x79, 0x03},
{0xc8, 0x40},
{0x79, 0x05},
{0xc8, 0x30},
{0x79, 0x26},
{0x09, 0x02},
{0x3b, 0x42},//0x82,//0xc0,//0xc2, //night mode
};
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刺客mfl
6楼-- · 2019-07-21 10:41
回复【6楼】麦田稻草:
---------------------------------
谢谢 我的是SCCB没有应答 具体问题http://www.openedv.com/posts/list/42915.htm 能麻烦给看下吗 小弟感激不尽 这两天被OV7670弄的头都大了 谢谢
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---------------------------------
不知道是怎么回事 上程序：
GPIO_InitTypeDef GPIO_InitStructure;
DCMI_InitTypeDef DCMI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_DCMI, ENABLE);//DCMI
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);//DMA2
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB |
RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOE, ENABLE);//使能DCMI的GPIO时钟
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_MCO); //MCO1
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
RCC_MCO2Config(RCC_MCO1Source_PLLCLK, RCC_MCO1Div_3); //168/3=56M XCLCK
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //PE5
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_ResetBits(GPIOE, GPIO_Pin_5); //power on
GPIO_PinAFConfig(GPIOA, GPIO_PinSource4, GPIO_AF_DCMI); //DCMI_HSYNC -PA4
GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_PIXCLK -PA6
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_D5 -PB6
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_DCMI); //DCMI_VSYNC -PB7
GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_DCMI); //DCMI_D6 -PB8
GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_DCMI); //DCMI_D7 -PB9
GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_DCMI); //DCMI_D0 -PC6
GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_DCMI); //DCMI_D1 -PC7
GPIO_PinAFConfig(GPIOE, GPIO_PinSource0, GPIO_AF_DCMI); //DCMI_D2 -PE0
GPIO_PinAFConfig(GPIOE, GPIO_PinSource1, GPIO_AF_DCMI); //DCMI_D3 -PE1
GPIO_PinAFConfig(GPIOE, GPIO_PinSource4, GPIO_AF_DCMI); //DCMI_D4 -PE4
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4;
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_6;
GPIO_Init(GPIOA, &GPIO_InitStructure);
CSPin_init(); //拉高SPI1的所有片选信号,以避免干扰.
DCMI_DeInit();
DCMI_InitStructure.DCMI_CaptureMode = DCMI_CaptureMode_Continuous;
DCMI_InitStructure.DCMI_SynchroMode = DCMI_SynchroMode_Hardware;
DCMI_InitStructure.DCMI_PCKPolarity = DCMI_PCKPolarity_Falling;
DCMI_InitStructure.DCMI_VSPolarity = DCMI_VSPolarity_High;
DCMI_InitStructure.DCMI_HSPolarity = DCMI_HSPolarity_High;
DCMI_InitStructure.DCMI_CaptureRate = DCMI_CaptureRate_All_Frame;
DCMI_InitStructure.DCMI_ExtendedDataMode = DCMI_ExtendedDataMode_8b;
DCMI_Init(&DCMI_InitStructure);
DCMI_NVIC_Config();
DCMI_ITConfig(DCMI_IT_FRAME,ENABLE);//DCMI中断
DMA_DeInit(DMA2_Stream1);
DMA_InitStructure.DMA_Channel = DMA_Channel_1;
DMA_InitStructure.DMA_PeripheralBaseAddr = DCMI_DR_ADDRESS;
DMA_InitStructure.DMA_Memory0BaseAddr = FSMC_LCD_ADDRESS;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
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_Stream1, &DMA_InitStructure);
摄像头OV7670初始化
static const u8 OV7670_reg[OV7670_REG_NUM][2]=
{
{0x3a, 0x0c},
{0x40, 0xd0},
{0x12, 0x14},
{0x32, 0x80},
{0x17, 0x16},
{0x18, 0x04},
{0x19, 0x02},//ó°?ì
{0x1a, 0x7a},//0x7a,
{0x03, 0x03},//ó°?ì
{0x3e, 0x00},//
{0x70, 0x00},
{0x71, 0x00},
{0x72, 0x11},
{0x73, 0x00},//
{0xa2, 0x02},
{0x11, 0x00},
{0x7a, 0x20},
{0x7b, 0x1c},
{0x7c, 0x28},
{0x7d, 0x3c},
{0x7e, 0x55},
{0x7f, 0x68},
{0x80, 0x76},
{0x81, 0x80},
{0x82, 0x88},
{0x83, 0x8f},
{0x84, 0x96},
{0x85, 0xa3},
{0x86, 0xaf},
{0x87, 0xc4},
{0x88, 0xd7},
{0x89, 0xe8},
{0x13, 0xe7},
{0x00, 0x00},//AGC
{0x10, 0x00},
{0x0d, 0x00},
{0x14, 0x31},//0x38, limit the max gain
{0xa5, 0x05},
{0xab, 0x07},
{0x24, 0x75},
{0x25, 0x63},
{0x26, 0xA5},
{0x9f, 0x78},
{0xa0, 0x68},
{0xa1, 0x03},
{0xa6, 0xdf},
{0xa7, 0xdf},
{0xa8, 0xf0},
{0xa9, 0x90},
{0xaa, 0x94},
{0x13, 0xe7},
{0x0e, 0x61},
{0x0f, 0x82},
{0x16, 0x02},
{0x1e, 0x07},
{0x21, 0x02},
{0x22, 0x91},
{0x29, 0x07},
{0x33, 0x0b},
{0x35, 0x0b},
{0x37, 0x1d},
{0x38, 0x71},
{0x39, 0x2a},//
{0x3c, 0x78},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x0c},
{0x6b, 0x00},//PLL
{0x74, 0x19},
{0x8d, 0x4f},
{0x8e, 0x00},
{0x8f, 0x00},
{0x90, 0x00},
{0x91, 0x00},
{0x92, 0x00},
{0x96, 0x00},
{0x9a, 0x80},
{0xb0, 0x84},
{0xb1, 0x0c},
{0xb2, 0x0e},
{0xb3, 0x82},
{0xb8, 0x0a},
{0x43, 0x14},
{0x44, 0xf0},
{0x45, 0x34},
{0x46, 0x58},
{0x47, 0x28},
{0x48, 0x3a},
{0x59, 0x88},
{0x5a, 0x88},
{0x5b, 0x44},
{0x5c, 0x67},
{0x5d, 0x49},
{0x5e, 0x0e},
{0x64, 0x04},
{0x65, 0x20},
{0x66, 0x05},
{0x94, 0x04},
{0x95, 0x08},
{0x6c, 0x0a},
{0x6d, 0x55},
{0x6e, 0x11},
{0x6f, 0x9f},//0x9e for advance AWB
{0x6a, 0x40},
{0x01, 0x40},
{0x02, 0x40},
{0x13, 0xe7},
{0x15, 0x18},
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x00},
{0x75, 0x05},
{0x76, 0xe1},
{0x4c, 0x00},
{0x77, 0x01},
{0x3d, 0xc0},
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38},
{0x56, 0x40},
{0x34, 0x11},
{0x3b, 0x12},
{0xa4, 0x89},
{0x96, 0x00},
{0x97, 0x30},
{0x98, 0x20},
{0x99, 0x30},
{0x9a, 0x84},
{0x9b, 0x29},
{0x9c, 0x03},
{0x9d, 0x4c},
{0x9e, 0x3f},
{0x78, 0x04},
{0x79, 0x01},
{0xc8, 0xf0},
{0x79, 0x0f},
{0xc8, 0x00},
{0x79, 0x10},
{0xc8, 0x7e},
{0x79, 0x0a},
{0xc8, 0x80},
{0x79, 0x0b},
{0xc8, 0x01},
{0x79, 0x0c},
{0xc8, 0x0f},
{0x79, 0x0d},
{0xc8, 0x20},
{0x79, 0x09},
{0xc8, 0x80},
{0x79, 0x02},
{0xc8, 0xc0},
{0x79, 0x03},
{0xc8, 0x40},
{0x79, 0x05},
{0xc8, 0x30},
{0x79, 0x26},
{0x09, 0x03},
{0x55, 0x00},
{0x56, 0x40},
{0x3b, 0x42},
{0x07, 0x08},
{0x10, 0x80},
};
还有如何调用这个函数 void OV7670_HW(u16 hstart,u16 vstart,u16 hstop,u16 vstop) 。。
#define OV7670_REG_NUM sizeof(OV7670_reg)/2
static const u8 OV7670_reg[][2]=
{
{0x3a, 0x04},
{0x40, 0xd0},
{0x12, 0x14}, //COM7
{0x32, 0x80},
{0x17, 0x16},
{0x18, 0x04},
{0x19, 0x02},
{0x1a, 0x7a},//0x7a,
{0x03, 0x05},//0x0a,
{0x0c, 0x00},
{0x3e, 0x00},//
{0x70, 0x00},
{0x71, 0x01},
{0x72, 0x11},
{0x73, 0x00},//
{0xa2, 0x02},
{0x11, 0x81},
{0x7a, 0x20},
{0x7b, 0x1c},
{0x7c, 0x28},
{0x7d, 0x3c},
{0x7e, 0x55},
{0x7f, 0x68},
{0x80, 0x76},
{0x81, 0x80},
{0x82, 0x88},
{0x83, 0x8f},
{0x84, 0x96},
{0x85, 0xa3},
{0x86, 0xaf},
{0x87, 0xc4},
{0x88, 0xd7},
{0x89, 0xe8},
{0x13, 0xe0},
{0x00, 0x00},//AGC
{0x10, 0x00},
{0x0d, 0x00},
{0x14, 0x28},//0x38, limit the max gain
{0xa5, 0x05},
{0xab, 0x07},
{0x24, 0x75},
{0x25, 0x63},
{0x26, 0xA5},
{0x9f, 0x78},
{0xa0, 0x68},
{0xa1, 0x03},//0x0b,
{0xa6, 0xdf},//0xd8,
{0xa7, 0xdf},//0xd8,
{0xa8, 0xf0},
{0xa9, 0x90},
{0xaa, 0x94},
{0x13, 0xe5},
{0x0e, 0x61},
{0x0f, 0x4b},
{0x16, 0x02},
{0x1e, 0x07},//0x07,
{0x21, 0x02},
{0x22, 0x91},
{0x29, 0x07},
{0x33, 0x0b},
{0x35, 0x0b},
{0x37, 0x1d},
{0x38, 0x71},
{0x39, 0x2a},
{0x3c, 0x78},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x55},
{0x6b, 0x0a},//PLL 重要参数 0x0a:不倍频，0x4a:4倍频
{0x74, 0x19},
{0x8d, 0x4f},
{0x8e, 0x00},
{0x8f, 0x00},
{0x90, 0x00},
{0x91, 0x00},
{0x92, 0x00},//0x19,//0x66
{0x96, 0x00},
{0x9a, 0x80},
{0xb0, 0x84},
{0xb1, 0x0c},
{0xb2, 0x0e},
{0xb3, 0x82},
{0xb8, 0x0a},
{0x43, 0x14},
{0x44, 0xf0},
{0x45, 0x34},
{0x46, 0x58},
{0x47, 0x28},
{0x48, 0x3a},
{0x59, 0x88},
{0x5a, 0x88},
{0x5b, 0x44},
{0x5c, 0x67},
{0x5d, 0x49},
{0x5e, 0x0e},
{0x64, 0x04},
{0x65, 0x20},
{0x66, 0x05},
{0x94, 0x04},
{0x95, 0x08},
{0x6c, 0x0a},
{0x6d, 0x55},
{0x6e, 0x11},
{0x6f, 0x9f},//0x9e for advance AWB
{0x6a, 0x40},
{0x01, 0x40},
{0x02, 0x40},
{0x13, 0xe7},
{0x15, 0x08}, //重要参数
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x55, 0x0A},//亮度
{0x56, 0x4f},//对比度
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x05},//边缘增强调整
{0x75, 0x05},
{0x76, 0xe1},
{0x4c, 0x0F},//噪声抑制强度
{0x77, 0x0a},
{0x3d, 0xc2},//0xc0,
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38},
{0x34, 0x11},
{0x3b, 0x0A},//0x00,//0x02,
{0xa4, 0x89},//0x88,
{0x96, 0x00},
{0x97, 0x30},
{0x98, 0x20},
{0x99, 0x30},
{0x9a, 0x84},
{0x9b, 0x29},
{0x9c, 0x03},
{0x9d, 0x4c},
{0x9e, 0x3f},
{0x78, 0x04},
{0x79, 0x01},
{0xc8, 0xf0},
{0x79, 0x0f},
{0xc8, 0x00},
{0x79, 0x10},
{0xc8, 0x7e},
{0x79, 0x0a},
{0xc8, 0x80},
{0x79, 0x0b},
{0xc8, 0x01},
{0x79, 0x0c},
{0xc8, 0x0f},
{0x79, 0x0d},
{0xc8, 0x20},
{0x79, 0x09},
{0xc8, 0x80},
{0x79, 0x02},
{0xc8, 0xc0},
{0x79, 0x03},
{0xc8, 0x40},
{0x79, 0x05},
{0xc8, 0x30},
{0x79, 0x26},
{0x09, 0x02},
{0x3b, 0x42},//0x82,//0xc0,//0xc2, //night mode
};
---------------------------------
谢谢 我的是SCCB没有应答 具体问题http://www.openedv.com/posts/list/42915.htm 能麻烦给看下吗 小弟感激不尽 这两天被OV7670弄的头都大了 谢谢
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