STM32H750获取OV5640摄像头图像及上位机解码（一维码&二维码）

1. 目的

针对静止拍摄图像场景，实现STM32H750对500万像素OV5640摄像头进行图像捕获，并通过串口将数据送到上位机软件进行解码。
本文可作为STM32H7及STM32F7系列驱动OV5640摄像头的代码参考，本例程输出分辨率（640×480）是通过DCMI的CROP方式从大图片中“剪”出，使用者也可以做不同设置“剪"出不同分辨率的图片。

2. 场景参数说明

上位机与STM32H750通过USB全速虚拟串口（可用12000000波特率）或UART串口（230400波特率）通讯及接收图像数据。
STM32H750通过DCMI总线接口与OV5640摄像头DVP接口连接，通过IIC总线与OV5640 SCCB配置端口连接，并通过GPIO连接控制摄像头端的Reset和PowerDown管脚。
STM32H750从OV5640摄像头获取640×480分辨率的RGB图像，本实验不针对有SRAM扩展的场景，也不针对直接传送数据至嵌入式LCD显示的场景,因此，内部SRAM分区用于存放一帧数据*（640×480×2 bytes)的空间不足，因此，利用STM32 DCMI CROP功能，获取多帧图像的不同部分实现拼接效果，并最终将一整帧数据传送到上位机。
开发环境为STM32CUBEIDE（HAL库）

3. 通讯协议

上位机通过串口发送0x01指令到STM32, STM32接收指令后，回复0x55 0xaa xx三个字节，其中0x55 0xaa指示有效的回复，xx为摄像头类型说明，便于上位机程序进行后续数据的识别处理，当前xx==0x03为OV5640摄像头。
STM32从OV5640摄像头分帧获取不同部分并发送整帧640×480×2的RGB565数据到上位机。
上位机进行图像的显示，并可选进行一维码和二维码的识别（基于zbar开源库）。
简化型设计，无校验方式

4. STM32H750时钟配置

对于需要STM32H750输出24MHz时钟给OV5640摄像头模块的场景，可以用STM32 MCO功能输出24MHz时钟。如果摄像头模块自带晶振，不需要STM32提供时钟。

5. STM32H750通讯接口配置

USB虚拟串口：

USART1串口配置：

6. 摄像头接口配置

DCMI接口：
STM32H7的HAL库DCMI接口,从1.8版本升级1.9以上版本后，配置及函数存在问题。因此这里的参数配置（“Parameter Settings”）部分，会在程序里面重新配置。

而其它部分正常配置：

需要单独对DCMI接口的HSYNC和VSYNC做输入GPIO的配置：

OV5640的SCCB接口时序通过STM32的GPIO管脚模拟，不采用专用的IIC管脚。OV5640的Reset和PowerDown信号，也通过2个GPIO进行管理控制。

保存，并生成初始代码，再进行功能代码的编写。

7. OV5640接口及配置代码

编写ov5640.h文件：

#include "stm32h7xx_hal.h"
#ifndef _OV5640_Barcode_H
#define _OV5640_Barcode_H//for not open-drain bus
/** SIOC: PE7* SIOD: PE8* VSYNC: PB7* HREF: PA4* PCLK: PA6* XCLK:  PA8 //24MHz, optional to use* D7: PB9* D6: PB8* D5: PD3* D4: PC11* D3: PE1* D2: PC8* D1: PC7* D0: PC6* RESET: PD10* PWDN: PD11***/#define SCCB_SCL_L         HAL_GPIO_WritePin(GPIOE,GPIO_PIN_7,GPIO_PIN_RESET)
#define SCCB_SCL_H          HAL_GPIO_WritePin(GPIOE,GPIO_PIN_7,GPIO_PIN_SET)
#define SCCB_SDA_L          HAL_GPIO_WritePin(GPIOE,GPIO_PIN_8,GPIO_PIN_RESET)
#define SCCB_SDA_H          HAL_GPIO_WritePin(GPIOE,GPIO_PIN_8,GPIO_PIN_SET)#define SCCB_READ_SDA       HAL_GPIO_ReadPin(GPIOE, GPIO_PIN_8)
#define SCCB_ID_W           0X78            //OV5640 ID for Write
#define SCCB_ID_R           0X79            //OV5640 ID for Read#define OV5640_PWDN           HAL_GPIO_WritePin(GPIOD,GPIO_PIN_11,GPIO_PIN_SET)
#define OV5640_PWUP           HAL_GPIO_WritePin(GPIOD,GPIO_PIN_11,GPIO_PIN_RESET)
#define OV5640_RST            HAL_GPIO_WritePin(GPIOD,GPIO_PIN_10,GPIO_PIN_RESET)
#define OV5640_RUN            HAL_GPIO_WritePin(GPIOD,GPIO_PIN_10,GPIO_PIN_SET)
#define OV5640_VSYNC          HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7)
#define OV5640_HREF           HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_4)
#define OV5640_PCLK           HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_6)void SCCB_Start(void);
void SCCB_Stop(void);
void SCCB_No_Ack(void);
uint8_t SCCB_WR_Byte(uint8_t data);
uint8_t SCCB_RD_Byte(void);
uint8_t SCCB_WR_Reg(uint16_t reg,uint8_t data);
uint8_t SCCB_RD_Reg(uint16_t reg);
uint32_t tickdelay;void SCCB_SDA_IN(void);
void SCCB_SDA_OUT(void);#define ticknumber 12*5void SCCB_Rst(void);//OV5640相关寄存器定义
#define OV5640_CHIPIDH          0X300A      //OV5640 CHIP ID high byte
#define OV5640_CHIPIDL          0X300B      //OV5640 CHIP ID low byte/***********************************/void OV5640_Init(void);
void OV5640_RGB565_Mode(void);
void OV5640_Exposure(uint8_t exposure);
void OV5640_Light_Mode(uint8_t mode);
void OV5640_Color_Saturation(uint8_t sat);
void OV5640_Brightness(uint8_t bright);
void OV5640_Contrast(uint8_t contrast);
void OV5640_Sharpness(uint8_t sharp);
void OV5640_Special_Effects(uint8_t eft);
uint8_t OV5640_OutSize_Set(uint16_t offx,uint16_t offy,uint16_t width,uint16_t height);
uint8_t OV5640_ImageWin_Set(uint16_t offx,uint16_t offy,uint16_t width,uint16_t height);
uint8_t OV5640_Focus_Init(void);
uint8_t OV5640_Focus_Single(void);
uint8_t OV5640_Focus_Constant(void);
void ov5640_speed_ctrl(void);#endif

编写ov5640.c文件：

#include <ov5640.h>//for not open-drain iic bus applicationvoid SCCB_Start(void)
{SCCB_SDA_H;SCCB_SCL_H;tickdelay = ticknumber;while(tickdelay--);SCCB_SDA_L;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_L;
}void SCCB_Stop(void)
{SCCB_SDA_L;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_H;tickdelay = ticknumber;while(tickdelay--);SCCB_SDA_H;tickdelay = ticknumber;while(tickdelay--);
}void SCCB_No_Ack(void)
{HAL_Delay(1);SCCB_SDA_H;SCCB_SCL_H;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_L;tickdelay = ticknumber;while(tickdelay--);SCCB_SDA_L;tickdelay = ticknumber;while(tickdelay--);
}uint8_t SCCB_WR_Byte(uint8_t dat)
{uint8_t j,res;for(j=0;j<8;j++){if(dat&0x80)SCCB_SDA_H;else SCCB_SDA_L;dat<<=1;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_H;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_L;}SCCB_SDA_IN();tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_H;tickdelay = ticknumber;while(tickdelay--);if(SCCB_READ_SDA)res=1;else res=0;SCCB_SCL_L;SCCB_SDA_OUT();return res;
}uint8_t SCCB_RD_Byte(void)
{uint8_t temp=0,j;SCCB_SDA_IN();for(j=8;j>0;j--){tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_H;temp=temp<<1;if(SCCB_READ_SDA)temp++;tickdelay = ticknumber;while(tickdelay--);SCCB_SCL_L;}SCCB_SDA_OUT();return temp;
}uint8_t SCCB_WR_Reg(uint16_t reg,uint8_t data)
{uint8_t res=0;SCCB_Start();if(SCCB_WR_Byte(SCCB_ID_W))res=1;tickdelay = ticknumber;while(tickdelay--);if(SCCB_WR_Byte(reg>>8))res=1;tickdelay = ticknumber;while(tickdelay--);if(SCCB_WR_Byte(reg))res=1;tickdelay = ticknumber;while(tickdelay--);if(SCCB_WR_Byte(data))res=1;SCCB_Stop();return    res;
}uint8_t SCCB_RD_Reg(uint16_t reg)
{uint8_t val=0;SCCB_Start();SCCB_WR_Byte(SCCB_ID_W);tickdelay = ticknumber;while(tickdelay--);SCCB_WR_Byte(reg>>8);tickdelay = ticknumber;while(tickdelay--);SCCB_WR_Byte(reg);tickdelay = ticknumber;while(tickdelay--);SCCB_Stop();tickdelay = ticknumber;while(tickdelay--);SCCB_Start();SCCB_WR_Byte(SCCB_ID_R);tickdelay = ticknumber;while(tickdelay--);val=SCCB_RD_Byte();SCCB_No_Ack();SCCB_Stop();return val;
}void SCCB_SDA_IN(void)
{GPIO_InitTypeDef GPIO_InitStruct = {0};__HAL_RCC_GPIOE_CLK_ENABLE();GPIO_InitStruct.Pin = GPIO_PIN_8;GPIO_InitStruct.Mode = GPIO_MODE_INPUT;GPIO_InitStruct.Pull = GPIO_PULLUP;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
}void SCCB_SDA_OUT(void)
{GPIO_InitTypeDef GPIO_InitStruct = {0};__HAL_RCC_GPIOE_CLK_ENABLE();GPIO_InitStruct.Pin = GPIO_PIN_8;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
}void SCCB_Rst(void)
{HAL_GPIO_WritePin(GPIOD,GPIO_PIN_11,GPIO_PIN_RESET)    ;HAL_GPIO_WritePin(GPIOD,GPIO_PIN_10,GPIO_PIN_RESET)    ;HAL_Delay(5);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_10,GPIO_PIN_SET) ;HAL_Delay(5);
}const uint16_t ov5640_init_reg_tbl[][2]=
{0x3008, 0x42,0x3103, 0x03,0x3017, 0xff,0x3018, 0xff,0x3034, 0x1a,0x3037, 0x13,0x3108, 0x01,0x3630, 0x36,0x3631, 0x0e,0x3632, 0xe2,0x3633, 0x12,0x3621, 0xe0,0x3704, 0xa0,0x3703, 0x5a,0x3715, 0x78,0x3717, 0x01,0x370b, 0x60,0x3705, 0x1a,0x3905, 0x02,0x3906, 0x10,0x3901, 0x0a,0x3731, 0x12,0x3600, 0x08,0x3601, 0x33,0x302d, 0x60,0x3620, 0x52,0x371b, 0x20,0x471c, 0x50,0x3a13, 0x43,0x3a18, 0x00,0x3a19, 0xf8,0x3635, 0x13,0x3636, 0x03,0x3634, 0x40,0x3622, 0x01,0x3c01, 0x34,0x3c04, 0x28,0x3c05, 0x98,0x3c06, 0x00,0x3c07, 0x08,0x3c08, 0x00,0x3c09, 0x1c,0x3c0a, 0x9c,0x3c0b, 0x40,0x3810, 0x00,0x3811, 0x10,0x3812, 0x00,0x3708, 0x64,0x4001, 0x02,0x4005, 0x1a,0x3000, 0x00,0x3004, 0xff,0x300e, 0x58,0x302e, 0x00,0x4300, 0x30,0x501f, 0x00,0x440e, 0x00,0x5000, 0xa7,0x3a0f, 0x30,0x3a10, 0x28,0x3a1b, 0x30,0x3a1e, 0x26,0x3a11, 0x60,0x3a1f, 0x14,0x5800, 0x23,0x5801, 0x14,0x5802, 0x0f,0x5803, 0x0f,0x5804, 0x12,0x5805, 0x26,0x5806, 0x0c,0x5807, 0x08,0x5808, 0x05,0x5809, 0x05,0x580a, 0x08,0x580b, 0x0d,0x580c, 0x08,0x580d, 0x03,0x580e, 0x00,0x580f, 0x00,0x5810, 0x03,0x5811, 0x09,0x5812, 0x07,0x5813, 0x03,0x5814, 0x00,0x5815, 0x01,0x5816, 0x03,0x5817, 0x08,0x5818, 0x0d,0x5819, 0x08,0x581a, 0x05,0x581b, 0x06,0x581c, 0x08,0x581d, 0x0e,0x581e, 0x29,0x581f, 0x17,0x5820, 0x11,0x5821, 0x11,0x5822, 0x15,0x5823, 0x28,0x5824, 0x46,0x5825, 0x26,0x5826, 0x08,0x5827, 0x26,0x5828, 0x64,0x5829, 0x26,0x582a, 0x24,0x582b, 0x22,0x582c, 0x24,0x582d, 0x24,0x582e, 0x06,0x582f, 0x22,0x5830, 0x40,0x5831, 0x42,0x5832, 0x24,0x5833, 0x26,0x5834, 0x24,0x5835, 0x22,0x5836, 0x22,0x5837, 0x26,0x5838, 0x44,0x5839, 0x24,0x583a, 0x26,0x583b, 0x28,0x583c, 0x42,0x583d, 0xce,0x5180, 0xff,0x5181, 0xf2,0x5182, 0x00,0x5183, 0x14,0x5184, 0x25,0x5185, 0x24,0x5186, 0x09,0x5187, 0x09,0x5188, 0x09,0x5189, 0x75,0x518a, 0x54,0x518b, 0xe0,0x518c, 0xb2,0x518d, 0x42,0x518e, 0x3d,0x518f, 0x56,0x5190, 0x46,0x5191, 0xf8,0x5192, 0x04,0x5193, 0x70,0x5194, 0xf0,0x5195, 0xf0,0x5196, 0x03,0x5197, 0x01,0x5198, 0x04,0x5199, 0x12,0x519a, 0x04,0x519b, 0x00,0x519c, 0x06,0x519d, 0x82,0x519e, 0x38,0x5480, 0x01,0x5481, 0x08,0x5482, 0x14,0x5483, 0x28,0x5484, 0x51,0x5485, 0x65,0x5486, 0x71,0x5487, 0x7d,0x5488, 0x87,0x5489, 0x91,0x548a, 0x9a,0x548b, 0xaa,0x548c, 0xb8,0x548d, 0xcd,0x548e, 0xdd,0x548f, 0xea,0x5490, 0x1d,0x5381, 0x1e,0x5382, 0x5b,0x5383, 0x08,0x5384, 0x0a,0x5385, 0x7e,0x5386, 0x88,0x5387, 0x7c,0x5388, 0x6c,0x5389, 0x10,0x538a, 0x01,0x538b, 0x98,0x5580, 0x06,0x5583, 0x40,0x5584, 0x10,0x5589, 0x10,0x558a, 0x00,0x558b, 0xf8,0x501d, 0x40,0x5300, 0x08,0x5301, 0x30,0x5302, 0x10,0x5303, 0x00,0x5304, 0x08,0x5305, 0x30,0x5306, 0x08,0x5307, 0x16,0x5309, 0x08,0x530a, 0x30,0x530b, 0x04,0x530c, 0x06,0x5025, 0x00,0x3008, 0x02,0x4740, 0x20
};void OV5640_Init(void)
{for(uint32_t i=0;i<sizeof(ov5640_init_reg_tbl)/4;i++){SCCB_WR_Reg(ov5640_init_reg_tbl[i][0],ov5640_init_reg_tbl[i][1]);}}const uint16_t ov5640_rgb565_reg_tbl[][2]=
{0x4300, 0X6F,0X501F, 0x01,0x3035, 0x41,0x3036, 0x46,0x3c07, 0x07,0x3820, 0x46,0x3821, 0x00,0x3814, 0x31,0x3815, 0x31,0x3800, 0x00,0x3801, 0x00,0x3802, 0x00,0x3803, 0x00,0x3804, 0x0a,0x3805, 0x3f,0x3806, 0x06,0x3807, 0xa9,0x3808, 0x05,0x3809, 0x00,0x380a, 0x02,0x380b, 0xd0,0x380c, 0x05,0x380d, 0xF8,0x380e, 0x03,0x380f, 0x84,0x3813, 0x04,0x3618, 0x00,0x3612, 0x29,0x3709, 0x52,0x370c, 0x03,0x3a02, 0x02,0x3a03, 0xe0,0x3a14, 0x02,0x3a15, 0xe0,0x4004, 0x02,0x3002, 0x1c,0x3006, 0xc3,0x4713, 0x03,0x4407, 0x04,0x460b, 0x37,0x460c, 0x20,0x4837, 0x16,0x3824, 0x04,0x5001, 0xA3,0x3503, 0x00
};void OV5640_RGB565_Mode(void)
{uint16_t i=0;for(i=0;i<(sizeof(ov5640_rgb565_reg_tbl)/4);i++){SCCB_WR_Reg(ov5640_rgb565_reg_tbl[i][0],ov5640_rgb565_reg_tbl[i][1]);}
}const static uint8_t OV5640_EXPOSURE_TBL[7][6]=
{0x10,0x08,0x10,0x08,0x20,0x10,//-30x20,0x18,0x41,0x20,0x18,0x10,//-0x30,0x28,0x61,0x30,0x28,0x10,//-10x38,0x30,0x61,0x38,0x30,0x10,//00x40,0x38,0x71,0x40,0x38,0x10,//+10x50,0x48,0x90,0x50,0x48,0x20,//+20x60,0x58,0xa0,0x60,0x58,0x20//+3
};void OV5640_Exposure(uint8_t exposure)
{SCCB_WR_Reg(0x3212,0x03);  //start group 3SCCB_WR_Reg(0x3a0f,OV5640_EXPOSURE_TBL[exposure][0]);SCCB_WR_Reg(0x3a10,OV5640_EXPOSURE_TBL[exposure][1]);SCCB_WR_Reg(0x3a1b,OV5640_EXPOSURE_TBL[exposure][2]);SCCB_WR_Reg(0x3a1e,OV5640_EXPOSURE_TBL[exposure][3]);SCCB_WR_Reg(0x3a11,OV5640_EXPOSURE_TBL[exposure][4]);SCCB_WR_Reg(0x3a1f,OV5640_EXPOSURE_TBL[exposure][5]);SCCB_WR_Reg(0x3212,0x13); //end group 3SCCB_WR_Reg(0x3212,0xa3); //launch group 3
}const static uint8_t OV5640_LIGHTMODE_TBL[5][7]=
{0x04,0X00,0X04,0X00,0X04,0X00,0X00,//Auto0x06,0X1C,0X04,0X00,0X04,0XF3,0X01,//Sunny0x05,0X48,0X04,0X00,0X07,0XCF,0X01,//Office0x06,0X48,0X04,0X00,0X04,0XD3,0X01,//Cloudy0x04,0X10,0X04,0X00,0X08,0X40,0X01//Home
};void OV5640_Light_Mode(uint8_t mode)
{uint8_t i;SCCB_WR_Reg(0x3212,0x03);for(i=0;i<7;i++) SCCB_WR_Reg(0x3400+i,OV5640_LIGHTMODE_TBL[mode][i]);SCCB_WR_Reg(0x3212,0x13);SCCB_WR_Reg(0x3212,0xa3);
}const static uint8_t OV5640_SATURATION_TBL[7][6]=
{0X0C,0x30,0X3D,0X3E,0X3D,0X01,//-30X10,0x3D,0X4D,0X4E,0X4D,0X01,//-20X15,0x52,0X66,0X68,0X66,0X02,//-10X1A,0x66,0X80,0X82,0X80,0X02,//+00X1F,0x7A,0X9A,0X9C,0X9A,0X02,//+10X24,0x8F,0XB3,0XB6,0XB3,0X03,//+20X2B,0xAB,0XD6,0XDA,0XD6,0X04//+3
};void OV5640_Color_Saturation(uint8_t sat)
{uint8_t i;SCCB_WR_Reg(0x3212,0x03);    //start group 3SCCB_WR_Reg(0x5381,0x1c);SCCB_WR_Reg(0x5382,0x5a);SCCB_WR_Reg(0x5383,0x06);for(i=0;i<6;i++)SCCB_WR_Reg(0x5384+i,OV5640_SATURATION_TBL[sat][i]);SCCB_WR_Reg(0x538b, 0x98);SCCB_WR_Reg(0x538a, 0x01);SCCB_WR_Reg(0x3212, 0x13); //end group 3SCCB_WR_Reg(0x3212, 0xa3); //launch group 3
}//bright:0~8
void OV5640_Brightness(uint8_t bright)
{uint8_t brtval;if(bright<4)brtval=4-bright;else brtval=bright-4;SCCB_WR_Reg(0x3212,0x03);   //start group 3SCCB_WR_Reg(0x5587,brtval<<4);if(bright<4)SCCB_WR_Reg(0x5588,0x09);else SCCB_WR_Reg(0x5588,0x01);SCCB_WR_Reg(0x3212,0x13); //end group 3SCCB_WR_Reg(0x3212,0xa3); //launch group 3
}//contrast:0~6
void OV5640_Contrast(uint8_t contrast)
{uint8_t reg0val=0X00;uint8_t reg1val=0X20;switch(contrast){case 0://-3reg1val=reg0val=0X14;break;case 1://-2reg1val=reg0val=0X18;break;case 2://-1reg1val=reg0val=0X1C;break;case 4://1reg0val=0X10;reg1val=0X24;break;case 5://2reg0val=0X18;reg1val=0X28;break;case 6://3reg0val=0X1C;reg1val=0X2C;break;}SCCB_WR_Reg(0x3212,0x03); //start group 3SCCB_WR_Reg(0x5585,reg0val);SCCB_WR_Reg(0x5586,reg1val);SCCB_WR_Reg(0x3212,0x13); //end group 3SCCB_WR_Reg(0x3212,0xa3); //launch group 3
}//sharp:0~33,0:close;33:auto
void OV5640_Sharpness(uint8_t sharp)
{if(sharp<33)//设置锐度{SCCB_WR_Reg(0x5308,0x65);SCCB_WR_Reg(0x5302,sharp);}else //自动锐度{SCCB_WR_Reg(0x5308,0x25);SCCB_WR_Reg(0x5300,0x08);SCCB_WR_Reg(0x5301,0x30);SCCB_WR_Reg(0x5302,0x10);SCCB_WR_Reg(0x5303,0x00);SCCB_WR_Reg(0x5309,0x08);SCCB_WR_Reg(0x530a,0x30);SCCB_WR_Reg(0x530b,0x04);SCCB_WR_Reg(0x530c,0x06);}}const static uint8_t OV5640_EFFECTS_TBL[7][3]=
{0X06,0x40,0X10,//normal0X1E,0xA0,0X40,//cold0X1E,0x80,0XC0,//warm0X1E,0x80,0X80,//black-white0X1E,0x40,0XA0,//yellow0X40,0x40,0X10,//anti0X1E,0x60,0X60,//green
};
void OV5640_Special_Effects(uint8_t eft)
{SCCB_WR_Reg(0x3212,0x03);SCCB_WR_Reg(0x5580,OV5640_EFFECTS_TBL[eft][0]);SCCB_WR_Reg(0x5583,OV5640_EFFECTS_TBL[eft][1]);SCCB_WR_Reg(0x5584,OV5640_EFFECTS_TBL[eft][2]);SCCB_WR_Reg(0x5003,0x08);SCCB_WR_Reg(0x3212,0x13);SCCB_WR_Reg(0x3212,0xa3);
}uint8_t OV5640_OutSize_Set(uint16_t offx,uint16_t offy,uint16_t width,uint16_t height)
{SCCB_WR_Reg(0X3212,0X03);SCCB_WR_Reg(0x3808,width>>8);SCCB_WR_Reg(0x3809,width&0xff);SCCB_WR_Reg(0x380a,height>>8);SCCB_WR_Reg(0x380b,height&0xff);SCCB_WR_Reg(0x3810,offx>>8);SCCB_WR_Reg(0x3811,offx&0xff);SCCB_WR_Reg(0x3812,offy>>8);SCCB_WR_Reg(0x3813,offy&0xff);SCCB_WR_Reg(0X3212,0X13);SCCB_WR_Reg(0X3212,0Xa3);return 0;
}uint8_t OV5640_ImageWin_Set(uint16_t offx,uint16_t offy,uint16_t width,uint16_t height)
{uint16_t xst,yst,xend,yend;xst=offx;yst=offy;xend=offx+width-1;yend=offy+height-1;SCCB_WR_Reg(0X3212,0X03);SCCB_WR_Reg(0X3800,xst>>8);SCCB_WR_Reg(0X3801,xst&0XFF);SCCB_WR_Reg(0X3802,yst>>8);SCCB_WR_Reg(0X3803,yst&0XFF);SCCB_WR_Reg(0X3804,xend>>8);SCCB_WR_Reg(0X3805,xend&0XFF);SCCB_WR_Reg(0X3806,yend>>8);SCCB_WR_Reg(0X3807,yend&0XFF);SCCB_WR_Reg(0X3212,0X13);SCCB_WR_Reg(0X3212,0Xa3);return 0;
}
const unsigned char OV5640_AF_Config[] =
{0x02, 0x0f, 0xd6, 0x02, 0x0a, 0x39, 0xc2, 0x01, 0x22, 0x22, 0x00, 0x02, 0x0f, 0xb2, 0xe5, 0x1f, //0x8000,0x70, 0x72, 0xf5, 0x1e, 0xd2, 0x35, 0xff, 0xef, 0x25, 0xe0, 0x24, 0x4e, 0xf8, 0xe4, 0xf6, 0x08, //0x8010,0xf6, 0x0f, 0xbf, 0x34, 0xf2, 0x90, 0x0e, 0x93, 0xe4, 0x93, 0xff, 0xe5, 0x4b, 0xc3, 0x9f, 0x50, //0x8020,0x04, 0x7f, 0x05, 0x80, 0x02, 0x7f, 0xfb, 0x78, 0xbd, 0xa6, 0x07, 0x12, 0x0f, 0x04, 0x40, 0x04, //0x8030,0x7f, 0x03, 0x80, 0x02, 0x7f, 0x30, 0x78, 0xbc, 0xa6, 0x07, 0xe6, 0x18, 0xf6, 0x08, 0xe6, 0x78, //0x8040,0xb9, 0xf6, 0x78, 0xbc, 0xe6, 0x78, 0xba, 0xf6, 0x78, 0xbf, 0x76, 0x33, 0xe4, 0x08, 0xf6, 0x78, //0x8050,0xb8, 0x76, 0x01, 0x75, 0x4a, 0x02, 0x78, 0xb6, 0xf6, 0x08, 0xf6, 0x74, 0xff, 0x78, 0xc1, 0xf6, //0x8060,0x08, 0xf6, 0x75, 0x1f, 0x01, 0x78, 0xbc, 0xe6, 0x75, 0xf0, 0x05, 0xa4, 0xf5, 0x4b, 0x12, 0x0a, //0x8070,0xff, 0xc2, 0x37, 0x22, 0x78, 0xb8, 0xe6, 0xd3, 0x94, 0x00, 0x40, 0x02, 0x16, 0x22, 0xe5, 0x1f, //0x8080,0xb4, 0x05, 0x23, 0xe4, 0xf5, 0x1f, 0xc2, 0x01, 0x78, 0xb6, 0xe6, 0xfe, 0x08, 0xe6, 0xff, 0x78, //0x8090,0x4e, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0xa2, 0x37, 0xe4, 0x33, 0xf5, 0x3c, 0x90, 0x30, 0x28, 0xf0, //0x80a0,0x75, 0x1e, 0x10, 0xd2, 0x35, 0x22, 0xe5, 0x4b, 0x75, 0xf0, 0x05, 0x84, 0x78, 0xbc, 0xf6, 0x90, //0x80b0,0x0e, 0x8c, 0xe4, 0x93, 0xff, 0x25, 0xe0, 0x24, 0x0a, 0xf8, 0xe6, 0xfc, 0x08, 0xe6, 0xfd, 0x78, //0x80c0,0xbc, 0xe6, 0x25, 0xe0, 0x24, 0x4e, 0xf8, 0xa6, 0x04, 0x08, 0xa6, 0x05, 0xef, 0x12, 0x0f, 0x0b, //0x80d0,0xd3, 0x78, 0xb7, 0x96, 0xee, 0x18, 0x96, 0x40, 0x0d, 0x78, 0xbc, 0xe6, 0x78, 0xb9, 0xf6, 0x78, //0x80e0,0xb6, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0x90, 0x0e, 0x8c, 0xe4, 0x93, 0x12, 0x0f, 0x0b, 0xc3, 0x78, //0x80f0,0xc2, 0x96, 0xee, 0x18, 0x96, 0x50, 0x0d, 0x78, 0xbc, 0xe6, 0x78, 0xba, 0xf6, 0x78, 0xc1, 0xa6, //0x8100,0x06, 0x08, 0xa6, 0x07, 0x78, 0xb6, 0xe6, 0xfe, 0x08, 0xe6, 0xc3, 0x78, 0xc2, 0x96, 0xff, 0xee, //0x8110,0x18, 0x96, 0x78, 0xc3, 0xf6, 0x08, 0xa6, 0x07, 0x90, 0x0e, 0x95, 0xe4, 0x18, 0x12, 0x0e, 0xe9, //0x8120,0x40, 0x02, 0xd2, 0x37, 0x78, 0xbc, 0xe6, 0x08, 0x26, 0x08, 0xf6, 0xe5, 0x1f, 0x64, 0x01, 0x70, //0x8130,0x4a, 0xe6, 0xc3, 0x78, 0xc0, 0x12, 0x0e, 0xdf, 0x40, 0x05, 0x12, 0x0e, 0xda, 0x40, 0x39, 0x12, //0x8140,0x0f, 0x02, 0x40, 0x04, 0x7f, 0xfe, 0x80, 0x02, 0x7f, 0x02, 0x78, 0xbd, 0xa6, 0x07, 0x78, 0xb9, //0x8150,0xe6, 0x24, 0x03, 0x78, 0xbf, 0xf6, 0x78, 0xb9, 0xe6, 0x24, 0xfd, 0x78, 0xc0, 0xf6, 0x12, 0x0f, //0x8160,0x02, 0x40, 0x06, 0x78, 0xc0, 0xe6, 0xff, 0x80, 0x04, 0x78, 0xbf, 0xe6, 0xff, 0x78, 0xbe, 0xa6, //0x8170,0x07, 0x75, 0x1f, 0x02, 0x78, 0xb8, 0x76, 0x01, 0x02, 0x02, 0x4a, 0xe5, 0x1f, 0x64, 0x02, 0x60, //0x8180,0x03, 0x02, 0x02, 0x2a, 0x78, 0xbe, 0xe6, 0xff, 0xc3, 0x78, 0xc0, 0x12, 0x0e, 0xe0, 0x40, 0x08, //0x8190,0x12, 0x0e, 0xda, 0x50, 0x03, 0x02, 0x02, 0x28, 0x12, 0x0f, 0x02, 0x40, 0x04, 0x7f, 0xff, 0x80, //0x81a0,0x02, 0x7f, 0x01, 0x78, 0xbd, 0xa6, 0x07, 0x78, 0xb9, 0xe6, 0x04, 0x78, 0xbf, 0xf6, 0x78, 0xb9, //0x81b0,0xe6, 0x14, 0x78, 0xc0, 0xf6, 0x18, 0x12, 0x0f, 0x04, 0x40, 0x04, 0xe6, 0xff, 0x80, 0x02, 0x7f, //0x81c0,0x00, 0x78, 0xbf, 0xa6, 0x07, 0xd3, 0x08, 0xe6, 0x64, 0x80, 0x94, 0x80, 0x40, 0x04, 0xe6, 0xff, //0x81d0,0x80, 0x02, 0x7f, 0x00, 0x78, 0xc0, 0xa6, 0x07, 0xc3, 0x18, 0xe6, 0x64, 0x80, 0x94, 0xb3, 0x50, //0x81e0,0x04, 0xe6, 0xff, 0x80, 0x02, 0x7f, 0x33, 0x78, 0xbf, 0xa6, 0x07, 0xc3, 0x08, 0xe6, 0x64, 0x80, //0x81f0,0x94, 0xb3, 0x50, 0x04, 0xe6, 0xff, 0x80, 0x02, 0x7f, 0x33, 0x78, 0xc0, 0xa6, 0x07, 0x12, 0x0f, //0x8200,0x02, 0x40, 0x06, 0x78, 0xc0, 0xe6, 0xff, 0x80, 0x04, 0x78, 0xbf, 0xe6, 0xff, 0x78, 0xbe, 0xa6, //0x8210,0x07, 0x75, 0x1f, 0x03, 0x78, 0xb8, 0x76, 0x01, 0x80, 0x20, 0xe5, 0x1f, 0x64, 0x03, 0x70, 0x26, //0x8220,0x78, 0xbe, 0xe6, 0xff, 0xc3, 0x78, 0xc0, 0x12, 0x0e, 0xe0, 0x40, 0x05, 0x12, 0x0e, 0xda, 0x40, //0x8230,0x09, 0x78, 0xb9, 0xe6, 0x78, 0xbe, 0xf6, 0x75, 0x1f, 0x04, 0x78, 0xbe, 0xe6, 0x75, 0xf0, 0x05, //0x8240,0xa4, 0xf5, 0x4b, 0x02, 0x0a, 0xff, 0xe5, 0x1f, 0xb4, 0x04, 0x10, 0x90, 0x0e, 0x94, 0xe4, 0x78, //0x8250,0xc3, 0x12, 0x0e, 0xe9, 0x40, 0x02, 0xd2, 0x37, 0x75, 0x1f, 0x05, 0x22, 0x30, 0x01, 0x03, 0x02, //0x8260,0x04, 0xc0, 0x30, 0x02, 0x03, 0x02, 0x04, 0xc0, 0x90, 0x51, 0xa5, 0xe0, 0x78, 0x93, 0xf6, 0xa3, //0x8270,0xe0, 0x08, 0xf6, 0xa3, 0xe0, 0x08, 0xf6, 0xe5, 0x1f, 0x70, 0x3c, 0x75, 0x1e, 0x20, 0xd2, 0x35, //0x8280,0x12, 0x0c, 0x7a, 0x78, 0x7e, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0x78, 0x8b, 0xa6, 0x09, 0x18, 0x76, //0x8290,0x01, 0x12, 0x0c, 0x5b, 0x78, 0x4e, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0x78, 0x8b, 0xe6, 0x78, 0x6e, //0x82a0,0xf6, 0x75, 0x1f, 0x01, 0x78, 0x93, 0xe6, 0x78, 0x90, 0xf6, 0x78, 0x94, 0xe6, 0x78, 0x91, 0xf6, //0x82b0,0x78, 0x95, 0xe6, 0x78, 0x92, 0xf6, 0x22, 0x79, 0x90, 0xe7, 0xd3, 0x78, 0x93, 0x96, 0x40, 0x05, //0x82c0,0xe7, 0x96, 0xff, 0x80, 0x08, 0xc3, 0x79, 0x93, 0xe7, 0x78, 0x90, 0x96, 0xff, 0x78, 0x88, 0x76, //0x82d0,0x00, 0x08, 0xa6, 0x07, 0x79, 0x91, 0xe7, 0xd3, 0x78, 0x94, 0x96, 0x40, 0x05, 0xe7, 0x96, 0xff, //0x82e0,0x80, 0x08, 0xc3, 0x79, 0x94, 0xe7, 0x78, 0x91, 0x96, 0xff, 0x12, 0x0c, 0x8e, 0x79, 0x92, 0xe7, //0x82f0,0xd3, 0x78, 0x95, 0x96, 0x40, 0x05, 0xe7, 0x96, 0xff, 0x80, 0x08, 0xc3, 0x79, 0x95, 0xe7, 0x78, //0x8300,0x92, 0x96, 0xff, 0x12, 0x0c, 0x8e, 0x12, 0x0c, 0x5b, 0x78, 0x8a, 0xe6, 0x25, 0xe0, 0x24, 0x4e, //0x8310,0xf8, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0x78, 0x8a, 0xe6, 0x24, 0x6e, 0xf8, 0xa6, 0x09, 0x78, 0x8a, //0x8320,0xe6, 0x24, 0x01, 0xff, 0xe4, 0x33, 0xfe, 0xd3, 0xef, 0x94, 0x0f, 0xee, 0x64, 0x80, 0x94, 0x80, //0x8330,0x40, 0x04, 0x7f, 0x00, 0x80, 0x05, 0x78, 0x8a, 0xe6, 0x04, 0xff, 0x78, 0x8a, 0xa6, 0x07, 0xe5, //0x8340,0x1f, 0xb4, 0x01, 0x0a, 0xe6, 0x60, 0x03, 0x02, 0x04, 0xc0, 0x75, 0x1f, 0x02, 0x22, 0x12, 0x0c, //0x8350,0x7a, 0x78, 0x80, 0xa6, 0x06, 0x08, 0xa6, 0x07, 0x12, 0x0c, 0x7a, 0x78, 0x82, 0xa6, 0x06, 0x08, //0x8360,0xa6, 0x07, 0x78, 0x6e, 0xe6, 0x78, 0x8c, 0xf6, 0x78, 0x6e, 0xe6, 0x78, 0x8d, 0xf6, 0x7f, 0x01, //0x8370,0xef, 0x25, 0xe0, 0x24, 0x4f, 0xf9, 0xc3, 0x78, 0x81, 0xe6, 0x97, 0x18, 0xe6, 0x19, 0x97, 0x50, //0x8380,0x0a, 0x12, 0x0c, 0x82, 0x78, 0x80, 0xa6, 0x04, 0x08, 0xa6, 0x05, 0x74, 0x6e, 0x2f, 0xf9, 0x78, //0x8390,0x8c, 0xe6, 0xc3, 0x97, 0x50, 0x08, 0x74, 0x6e, 0x2f, 0xf8, 0xe6, 0x78, 0x8c, 0xf6, 0xef, 0x25, //0x83a0,0xe0, 0x24, 0x4f, 0xf9, 0xd3, 0x78, 0x83, 0xe6, 0x97, 0x18, 0xe6, 0x19, 0x97, 0x40, 0x0a, 0x12, //0x83b0,0x0c, 0x82, 0x78, 0x82, 0xa6, 0x04, 0x08, 0xa6, 0x05, 0x74, 0x6e, 0x2f, 0xf9, 0x78, 0x8d, 0xe6, //0x83c0,0xd3, 0x97, 0x40, 0x08, 0x74, 0x6e, 0x2f, 0xf8, 0xe6, 0x78, 0x8d, 0xf6, 0x0f, 0xef, 0x64, 0x10, //0x83d0,0x70, 0x9e, 0xc3, 0x79, 0x81, 0xe7, 0x78, 0x83, 0x96, 0xff, 0x19, 0xe7, 0x18, 0x96, 0x78, 0x84, //0x83e0,0xf6, 0x08, 0xa6, 0x07, 0xc3, 0x79, 0x8c, 0xe7, 0x78, 0x8d, 0x96, 0x08, 0xf6, 0xd3, 0x79, 0x81, //0x83f0,0xe7, 0x78, 0x7f, 0x96, 0x19, 0xe7, 0x18, 0x96, 0x40, 0x05, 0x09, 0xe7, 0x08, 0x80, 0x06, 0xc3, //0x8400,0x79, 0x7f, 0xe7, 0x78, 0x81, 0x96, 0xff, 0x19, 0xe7, 0x18, 0x96, 0xfe, 0x78, 0x86, 0xa6, 0x06, //0x8410,0x08, 0xa6, 0x07, 0x79, 0x8c, 0xe7, 0xd3, 0x78, 0x8b, 0x96, 0x40, 0x05, 0xe7, 0x96, 0xff, 0x80, //0x8420,0x08, 0xc3, 0x79, 0x8b, 0xe7, 0x78, 0x8c, 0x96, 0xff, 0x78, 0x8f, 0xa6, 0x07, 0xe5, 0x1f, 0x64, //0x8430,0x02, 0x70, 0x69, 0x90, 0x0e, 0x91, 0x93, 0xff, 0x18, 0xe6, 0xc3, 0x9f, 0x50, 0x72, 0x12, 0x0c, //0x8440,0x4a, 0x12, 0x0c, 0x2f, 0x90, 0x0e, 0x8e, 0x12, 0x0c, 0x38, 0x78, 0x80, 0x12, 0x0c, 0x6b, 0x7b, //0x8450,0x04, 0x12, 0x0c, 0x1d, 0xc3, 0x12, 0x06, 0x45, 0x50, 0x56, 0x90, 0x0e, 0x92, 0xe4, 0x93, 0xff, //0x8460,0x78, 0x8f, 0xe6, 0x9f, 0x40, 0x02, 0x80, 0x11, 0x90, 0x0e, 0x90, 0xe4, 0x93, 0xff, 0xd3, 0x78, //0x8470,0x89, 0xe6, 0x9f, 0x18, 0xe6, 0x94, 0x00, 0x40, 0x03, 0x75, 0x1f, 0x05, 0x12, 0x0c, 0x4a, 0x12, //0x8480,0x0c, 0x2f, 0x90, 0x0e, 0x8f, 0x12, 0x0c, 0x38, 0x78, 0x7e, 0x12, 0x0c, 0x6b, 0x7b, 0x40, 0x12, //0x8490,0x0c, 0x1d, 0xd3, 0x12, 0x06, 0x45, 0x40, 0x18, 0x75, 0x1f, 0x05, 0x22, 0xe5, 0x1f, 0xb4, 0x05, //0x84a0,0x0f, 0xd2, 0x01, 0xc2, 0x02, 0xe4, 0xf5, 0x1f, 0xf5, 0x1e, 0xd2, 0x35, 0xd2, 0x33, 0xd2, 0x36, //0x84b0,0x22, 0xef, 0x8d, 0xf0, 0xa4, 0xa8, 0xf0, 0xcf, 0x8c, 0xf0, 0xa4, 0x28, 0xce, 0x8d, 0xf0, 0xa4, //0x84c0,0x2e, 0xfe, 0x22, 0xbc, 0x00, 0x0b, 0xbe, 0x00, 0x29, 0xef, 0x8d, 0xf0, 0x84, 0xff, 0xad, 0xf0, //0x84d0,0x22, 0xe4, 0xcc, 0xf8, 0x75, 0xf0, 0x08, 0xef, 0x2f, 0xff, 0xee, 0x33, 0xfe, 0xec, 0x33, 0xfc, //0x84e0,0xee, 0x9d, 0xec, 0x98, 0x40, 0x05, 0xfc, 0xee, 0x9d, 0xfe, 0x0f, 0xd5, 0xf0, 0xe9, 0xe4, 0xce, //0x84f0,0xfd, 0x22, 0xed, 0xf8, 0xf5, 0xf0, 0xee, 0x84, 0x20, 0xd2, 0x1c, 0xfe, 0xad, 0xf0, 0x75, 0xf0, //0x8500,0x08, 0xef, 0x2f, 0xff, 0xed, 0x33, 0xfd, 0x40, 0x07, 0x98, 0x50, 0x06, 0xd5, 0xf0, 0xf2, 0x22, //0x8510,0xc3, 0x98, 0xfd, 0x0f, 0xd5, 0xf0, 0xea, 0x22, 0xe8, 0x8f, 0xf0, 0xa4, 0xcc, 0x8b, 0xf0, 0xa4, //0x8520,0x2c, 0xfc, 0xe9, 0x8e, 0xf0, 0xa4, 0x2c, 0xfc, 0x8a, 0xf0, 0xed, 0xa4, 0x2c, 0xfc, 0xea, 0x8e, //0x8530,0xf0, 0xa4, 0xcd, 0xa8, 0xf0, 0x8b, 0xf0, 0xa4, 0x2d, 0xcc, 0x38, 0x25, 0xf0, 0xfd, 0xe9, 0x8f, //0x8540,0xf0, 0xa4, 0x2c, 0xcd, 0x35, 0xf0, 0xfc, 0xeb, 0x8e, 0xf0, 0xa4, 0xfe, 0xa9, 0xf0, 0xeb, 0x8f, //0x8550,0xf0, 0xa4, 0xcf, 0xc5, 0xf0, 0x2e, 0xcd, 0x39, 0xfe, 0xe4, 0x3c, 0xfc, 0xea, 0xa4, 0x2d, 0xce, //0x8560,0x35, 0xf0, 0xfd, 0xe4, 0x3c, 0xfc, 0x22, 0x75, 0xf0, 0x08, 0x75, 0x82, 0x00, 0xef, 0x2f, 0xff, //0x8570,0xee, 0x33, 0xfe, 0xcd, 0x33, 0xcd, 0xcc, 0x33, 0xcc, 0xc5, 0x82, 0x33, 0xc5, 0x82, 0x9b, 0xed, //0x8580,0x9a, 0xec, 0x99, 0xe5, 0x82, 0x98, 0x40, 0x0c, 0xf5, 0x82, 0xee, 0x9b, 0xfe, 0xed, 0x9a, 0xfd, //0x8590,0xec, 0x99, 0xfc, 0x0f, 0xd5, 0xf0, 0xd6, 0xe4, 0xce, 0xfb, 0xe4, 0xcd, 0xfa, 0xe4, 0xcc, 0xf9, //0x85a0,0xa8, 0x82, 0x22, 0xb8, 0x00, 0xc1, 0xb9, 0x00, 0x59, 0xba, 0x00, 0x2d, 0xec, 0x8b, 0xf0, 0x84, //0x85b0,0xcf, 0xce, 0xcd, 0xfc, 0xe5, 0xf0, 0xcb, 0xf9, 0x78, 0x18, 0xef, 0x2f, 0xff, 0xee, 0x33, 0xfe, //0x85c0,0xed, 0x33, 0xfd, 0xec, 0x33, 0xfc, 0xeb, 0x33, 0xfb, 0x10, 0xd7, 0x03, 0x99, 0x40, 0x04, 0xeb, //0x85d0,0x99, 0xfb, 0x0f, 0xd8, 0xe5, 0xe4, 0xf9, 0xfa, 0x22, 0x78, 0x18, 0xef, 0x2f, 0xff, 0xee, 0x33, 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0x02, 0x06, 0xd7, 0x12, 0x0d, 0x7e, 0x90, 0x30, 0x24, //0x8a10,0xe5, 0x3d, 0xf0, 0xa3, 0xe5, 0x3e, 0xf0, 0xa3, 0xe5, 0x3f, 0xf0, 0xa3, 0xe5, 0x40, 0xf0, 0xa3, //0x8a20,0xe5, 0x3c, 0xf0, 0x90, 0x30, 0x23, 0xe4, 0xf0, 0x22, 0xc0, 0xe0, 0xc0, 0x83, 0xc0, 0x82, 0xc0, //0x8a30,0xd0, 0x90, 0x3f, 0x0c, 0xe0, 0xf5, 0x32, 0xe5, 0x32, 0x30, 0xe3, 0x74, 0x30, 0x36, 0x66, 0x90, //0x8a40,0x60, 0x19, 0xe0, 0xf5, 0x0a, 0xa3, 0xe0, 0xf5, 0x0b, 0x90, 0x60, 0x1d, 0xe0, 0xf5, 0x14, 0xa3, //0x8a50,0xe0, 0xf5, 0x15, 0x90, 0x60, 0x21, 0xe0, 0xf5, 0x0c, 0xa3, 0xe0, 0xf5, 0x0d, 0x90, 0x60, 0x29, //0x8a60,0xe0, 0xf5, 0x0e, 0xa3, 0xe0, 0xf5, 0x0f, 0x90, 0x60, 0x31, 0xe0, 0xf5, 0x10, 0xa3, 0xe0, 0xf5, //0x8a70,0x11, 0x90, 0x60, 0x39, 0xe0, 0xf5, 0x12, 0xa3, 0xe0, 0xf5, 0x13, 0x30, 0x01, 0x06, 0x30, 0x33, //0x8a80,0x03, 0xd3, 0x80, 0x01, 0xc3, 0x92, 0x09, 0x30, 0x02, 0x06, 0x30, 0x33, 0x03, 0xd3, 0x80, 0x01, //0x8a90,0xc3, 0x92, 0x0a, 0x30, 0x33, 0x0c, 0x30, 0x03, 0x09, 0x20, 0x02, 0x06, 0x20, 0x01, 0x03, 0xd3, //0x8aa0,0x80, 0x01, 0xc3, 0x92, 0x0b, 0x90, 0x30, 0x01, 0xe0, 0x44, 0x40, 0xf0, 0xe0, 0x54, 0xbf, 0xf0, //0x8ab0,0xe5, 0x32, 0x30, 0xe1, 0x14, 0x30, 0x34, 0x11, 0x90, 0x30, 0x22, 0xe0, 0xf5, 0x08, 0xe4, 0xf0, //0x8ac0,0x30, 0x00, 0x03, 0xd3, 0x80, 0x01, 0xc3, 0x92, 0x08, 0xe5, 0x32, 0x30, 0xe5, 0x12, 0x90, 0x56, //0x8ad0,0xa1, 0xe0, 0xf5, 0x09, 0x30, 0x31, 0x09, 0x30, 0x05, 0x03, 0xd3, 0x80, 0x01, 0xc3, 0x92, 0x0d, //0x8ae0,0x90, 0x3f, 0x0c, 0xe5, 0x32, 0xf0, 0xd0, 0xd0, 0xd0, 0x82, 0xd0, 0x83, 0xd0, 0xe0, 0x32, 0x90, //0x8af0,0x0e, 0x7e, 0xe4, 0x93, 0xfe, 0x74, 0x01, 0x93, 0xff, 0xc3, 0x90, 0x0e, 0x7c, 0x74, 0x01, 0x93, //0x8b00,0x9f, 0xff, 0xe4, 0x93, 0x9e, 0xfe, 0xe4, 0x8f, 0x3b, 0x8e, 0x3a, 0xf5, 0x39, 0xf5, 0x38, 0xab, //0x8b10,0x3b, 0xaa, 0x3a, 0xa9, 0x39, 0xa8, 0x38, 0xaf, 0x4b, 0xfc, 0xfd, 0xfe, 0x12, 0x05, 0x28, 0x12, //0x8b20,0x0d, 0xe1, 0xe4, 0x7b, 0xff, 0xfa, 0xf9, 0xf8, 0x12, 0x05, 0xb3, 0x12, 0x0d, 0xe1, 0x90, 0x0e, //0x8b30,0x69, 0xe4, 0x12, 0x0d, 0xf6, 0x12, 0x0d, 0xe1, 0xe4, 0x85, 0x4a, 0x37, 0xf5, 0x36, 0xf5, 0x35, //0x8b40,0xf5, 0x34, 0xaf, 0x37, 0xae, 0x36, 0xad, 0x35, 0xac, 0x34, 0xa3, 0x12, 0x0d, 0xf6, 0x8f, 0x37, //0x8b50,0x8e, 0x36, 0x8d, 0x35, 0x8c, 0x34, 0xe5, 0x3b, 0x45, 0x37, 0xf5, 0x3b, 0xe5, 0x3a, 0x45, 0x36, //0x8b60,0xf5, 0x3a, 0xe5, 0x39, 0x45, 0x35, 0xf5, 0x39, 0xe5, 0x38, 0x45, 0x34, 0xf5, 0x38, 0xe4, 0xf5, //0x8b70,0x22, 0xf5, 0x23, 0x85, 0x3b, 0x31, 0x85, 0x3a, 0x30, 0x85, 0x39, 0x2f, 0x85, 0x38, 0x2e, 0x02, //0x8b80,0x0f, 0x46, 0xe0, 0xa3, 0xe0, 0x75, 0xf0, 0x02, 0xa4, 0xff, 0xae, 0xf0, 0xc3, 0x08, 0xe6, 0x9f, //0x8b90,0xf6, 0x18, 0xe6, 0x9e, 0xf6, 0x22, 0xff, 0xe5, 0xf0, 0x34, 0x60, 0x8f, 0x82, 0xf5, 0x83, 0xec, //0x8ba0,0xf0, 0x22, 0x78, 0x52, 0x7e, 0x00, 0xe6, 0xfc, 0x08, 0xe6, 0xfd, 0x02, 0x04, 0xc1, 0xe4, 0xfc, //0x8bb0,0xfd, 0x12, 0x06, 0x99, 0x78, 0x5c, 0xe6, 0xc3, 0x13, 0xfe, 0x08, 0xe6, 0x13, 0x22, 0x78, 0x52, //0x8bc0,0xe6, 0xfe, 0x08, 0xe6, 0xff, 0xe4, 0xfc, 0xfd, 0x22, 0xe7, 0xc4, 0xf8, 0x54, 0xf0, 0xc8, 0x68, //0x8bd0,0xf7, 0x09, 0xe7, 0xc4, 0x54, 0x0f, 0x48, 0xf7, 0x22, 0xe6, 0xfc, 0xed, 0x75, 0xf0, 0x04, 0xa4, //0x8be0,0x22, 0x12, 0x06, 0x7c, 0x8f, 0x48, 0x8e, 0x47, 0x8d, 0x46, 0x8c, 0x45, 0x22, 0xe0, 0xfe, 0xa3, //0x8bf0,0xe0, 0xfd, 0xee, 0xf6, 0xed, 0x08, 0xf6, 0x22, 0x13, 0xff, 0xc3, 0xe6, 0x9f, 0xff, 0x18, 0xe6, //0x8c00,0x9e, 0xfe, 0x22, 0xe6, 0xc3, 0x13, 0xf7, 0x08, 0xe6, 0x13, 0x09, 0xf7, 0x22, 0xad, 0x39, 0xac, //0x8c10,0x38, 0xfa, 0xf9, 0xf8, 0x12, 0x05, 0x28, 0x8f, 0x3b, 0x8e, 0x3a, 0x8d, 0x39, 0x8c, 0x38, 0xab, //0x8c20,0x37, 0xaa, 0x36, 0xa9, 0x35, 0xa8, 0x34, 0x22, 0x93, 0xff, 0xe4, 0xfc, 0xfd, 0xfe, 0x12, 0x05, //0x8c30,0x28, 0x8f, 0x37, 0x8e, 0x36, 0x8d, 0x35, 0x8c, 0x34, 0x22, 0x78, 0x84, 0xe6, 0xfe, 0x08, 0xe6, //0x8c40,0xff, 0xe4, 0x8f, 0x37, 0x8e, 0x36, 0xf5, 0x35, 0xf5, 0x34, 0x22, 0x90, 0x0e, 0x8c, 0xe4, 0x93, //0x8c50,0x25, 0xe0, 0x24, 0x0a, 0xf8, 0xe6, 0xfe, 0x08, 0xe6, 0xff, 0x22, 0xe6, 0xfe, 0x08, 0xe6, 0xff, //0x8c60,0xe4, 0x8f, 0x3b, 0x8e, 0x3a, 0xf5, 0x39, 0xf5, 0x38, 0x22, 0x78, 0x4e, 0xe6, 0xfe, 0x08, 0xe6, //0x8c70,0xff, 0x22, 0xef, 0x25, 0xe0, 0x24, 0x4e, 0xf8, 0xe6, 0xfc, 0x08, 0xe6, 0xfd, 0x22, 0x78, 0x89, //0x8c80,0xef, 0x26, 0xf6, 0x18, 0xe4, 0x36, 0xf6, 0x22, 0x75, 0x89, 0x03, 0x75, 0xa8, 0x01, 0x75, 0xb8, //0x8c90,0x04, 0x75, 0x34, 0xff, 0x75, 0x35, 0x0e, 0x75, 0x36, 0x15, 0x75, 0x37, 0x0d, 0x12, 0x0e, 0x9a, //0x8ca0,0x12, 0x00, 0x09, 0x12, 0x0f, 0x16, 0x12, 0x00, 0x06, 0xd2, 0x00, 0xd2, 0x34, 0xd2, 0xaf, 0x75, //0x8cb0,0x34, 0xff, 0x75, 0x35, 0x0e, 0x75, 0x36, 0x49, 0x75, 0x37, 0x03, 0x12, 0x0e, 0x9a, 0x30, 0x08, //0x8cc0,0x09, 0xc2, 0x34, 0x12, 0x08, 0xcb, 0xc2, 0x08, 0xd2, 0x34, 0x30, 0x0b, 0x09, 0xc2, 0x36, 0x12, //0x8cd0,0x02, 0x6c, 0xc2, 0x0b, 0xd2, 0x36, 0x30, 0x09, 0x09, 0xc2, 0x36, 0x12, 0x00, 0x0e, 0xc2, 0x09, //0x8ce0,0xd2, 0x36, 0x30, 0x0e, 0x03, 0x12, 0x06, 0xd7, 0x30, 0x35, 0xd3, 0x90, 0x30, 0x29, 0xe5, 0x1e, //0x8cf0,0xf0, 0xb4, 0x10, 0x05, 0x90, 0x30, 0x23, 0xe4, 0xf0, 0xc2, 0x35, 0x80, 0xc1, 0xe4, 0xf5, 0x4b, //0x8d00,0x90, 0x0e, 0x7a, 0x93, 0xff, 0xe4, 0x8f, 0x37, 0xf5, 0x36, 0xf5, 0x35, 0xf5, 0x34, 0xaf, 0x37, //0x8d10,0xae, 0x36, 0xad, 0x35, 0xac, 0x34, 0x90, 0x0e, 0x6a, 0x12, 0x0d, 0xf6, 0x8f, 0x37, 0x8e, 0x36, //0x8d20,0x8d, 0x35, 0x8c, 0x34, 0x90, 0x0e, 0x72, 0x12, 0x06, 0x7c, 0xef, 0x45, 0x37, 0xf5, 0x37, 0xee, //0x8d30,0x45, 0x36, 0xf5, 0x36, 0xed, 0x45, 0x35, 0xf5, 0x35, 0xec, 0x45, 0x34, 0xf5, 0x34, 0xe4, 0xf5, //0x8d40,0x22, 0xf5, 0x23, 0x85, 0x37, 0x31, 0x85, 0x36, 0x30, 0x85, 0x35, 0x2f, 0x85, 0x34, 0x2e, 0x12, //0x8d50,0x0f, 0x46, 0xe4, 0xf5, 0x22, 0xf5, 0x23, 0x90, 0x0e, 0x72, 0x12, 0x0d, 0xea, 0x12, 0x0f, 0x46, //0x8d60,0xe4, 0xf5, 0x22, 0xf5, 0x23, 0x90, 0x0e, 0x6e, 0x12, 0x0d, 0xea, 0x02, 0x0f, 0x46, 0xe5, 0x40, //0x8d70,0x24, 0xf2, 0xf5, 0x37, 0xe5, 0x3f, 0x34, 0x43, 0xf5, 0x36, 0xe5, 0x3e, 0x34, 0xa2, 0xf5, 0x35, //0x8d80,0xe5, 0x3d, 0x34, 0x28, 0xf5, 0x34, 0xe5, 0x37, 0xff, 0xe4, 0xfe, 0xfd, 0xfc, 0x78, 0x18, 0x12, //0x8d90,0x06, 0x69, 0x8f, 0x40, 0x8e, 0x3f, 0x8d, 0x3e, 0x8c, 0x3d, 0xe5, 0x37, 0x54, 0xa0, 0xff, 0xe5, //0x8da0,0x36, 0xfe, 0xe4, 0xfd, 0xfc, 0x78, 0x07, 0x12, 0x06, 0x56, 0x78, 0x10, 0x12, 0x0f, 0x9a, 0xe4, //0x8db0,0xff, 0xfe, 0xe5, 0x35, 0xfd, 0xe4, 0xfc, 0x78, 0x0e, 0x12, 0x06, 0x56, 0x12, 0x0f, 0x9d, 0xe4, //0x8dc0,0xff, 0xfe, 0xfd, 0xe5, 0x34, 0xfc, 0x78, 0x18, 0x12, 0x06, 0x56, 0x78, 0x08, 0x12, 0x0f, 0x9a, //0x8dd0,0x22, 0x8f, 0x3b, 0x8e, 0x3a, 0x8d, 0x39, 0x8c, 0x38, 0x22, 0x12, 0x06, 0x7c, 0x8f, 0x31, 0x8e, //0x8de0,0x30, 0x8d, 0x2f, 0x8c, 0x2e, 0x22, 0x93, 0xf9, 0xf8, 0x02, 0x06, 0x69, 0x00, 0x00, 0x00, 0x00, //0x8df0,0x12, 0x01, 0x17, 0x08, 0x31, 0x15, 0x53, 0x54, 0x44, 0x20, 0x20, 0x20, 0x20, 0x20, 0x13, 0x01, //0x8e00,0x10, 0x01, 0x56, 0x40, 0x1a, 0x30, 0x29, 0x7e, 0x00, 0x30, 0x04, 0x20, 0xdf, 0x30, 0x05, 0x40, //0x8e10,0xbf, 0x50, 0x03, 0x00, 0xfd, 0x50, 0x27, 0x01, 0xfe, 0x60, 0x00, 0x11, 0x00, 0x3f, 0x05, 0x30, //0x8e20,0x00, 0x3f, 0x06, 0x22, 0x00, 0x3f, 0x01, 0x2a, 0x00, 0x3f, 0x02, 0x00, 0x00, 0x36, 0x06, 0x07, //0x8e30,0x00, 0x3f, 0x0b, 0x0f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x30, 0x01, 0x40, 0xbf, 0x30, 0x01, 0x00, //0x8e40,0xbf, 0x30, 0x29, 0x70, 0x00, 0x3a, 0x00, 0x00, 0xff, 0x3a, 0x00, 0x00, 0xff, 0x36, 0x03, 0x36, //0x8e50,0x02, 0x41, 0x44, 0x58, 0x20, 0x18, 0x10, 0x0a, 0x04, 0x04, 0x00, 0x03, 0xff, 0x64, 0x00, 0x00, //0x8e60,0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x04, 0x06, 0x06, 0x00, 0x03, 0x51, 0x00, 0x7a, //0x8e70,0x50, 0x3c, 0x28, 0x1e, 0x10, 0x10, 0x50, 0x2d, 0x28, 0x16, 0x10, 0x10, 0x02, 0x00, 0x10, 0x0c, //0x8e80,0x10, 0x04, 0x0c, 0x6e, 0x06, 0x05, 0x00, 0xa5, 0x5a, 0x00, 0xae, 0x35, 0xaf, 0x36, 0xe4, 0xfd, //0x8e90,0xed, 0xc3, 0x95, 0x37, 0x50, 0x33, 0x12, 0x0f, 0xe2, 0xe4, 0x93, 0xf5, 0x38, 0x74, 0x01, 0x93, //0x8ea0,0xf5, 0x39, 0x45, 0x38, 0x60, 0x23, 0x85, 0x39, 0x82, 0x85, 0x38, 0x83, 0xe0, 0xfc, 0x12, 0x0f, //0x8eb0,0xe2, 0x74, 0x03, 0x93, 0x52, 0x04, 0x12, 0x0f, 0xe2, 0x74, 0x02, 0x93, 0x42, 0x04, 0x85, 0x39, //0x8ec0,0x82, 0x85, 0x38, 0x83, 0xec, 0xf0, 0x0d, 0x80, 0xc7, 0x22, 0x78, 0xbe, 0xe6, 0xd3, 0x08, 0xff, //0x8ed0,0xe6, 0x64, 0x80, 0xf8, 0xef, 0x64, 0x80, 0x98, 0x22, 0x93, 0xff, 0x7e, 0x00, 0xe6, 0xfc, 0x08, //0x8ee0,0xe6, 0xfd, 0x12, 0x04, 0xc1, 0x78, 0xc1, 0xe6, 0xfc, 0x08, 0xe6, 0xfd, 0xd3, 0xef, 0x9d, 0xee, //0x8ef0,0x9c, 0x22, 0x78, 0xbd, 0xd3, 0xe6, 0x64, 0x80, 0x94, 0x80, 0x22, 0x25, 0xe0, 0x24, 0x0a, 0xf8, //0x8f00,0xe6, 0xfe, 0x08, 0xe6, 0xff, 0x22, 0xe5, 0x3c, 0xd3, 0x94, 0x00, 0x40, 0x0b, 0x90, 0x0e, 0x88, //0x8f10,0x12, 0x0b, 0xf1, 0x90, 0x0e, 0x86, 0x80, 0x09, 0x90, 0x0e, 0x82, 0x12, 0x0b, 0xf1, 0x90, 0x0e, //0x8f20,0x80, 0xe4, 0x93, 0xf5, 0x44, 0xa3, 0xe4, 0x93, 0xf5, 0x43, 0xd2, 0x06, 0x30, 0x06, 0x03, 0xd3, //0x8f30,0x80, 0x01, 0xc3, 0x92, 0x0e, 0x22, 0xa2, 0xaf, 0x92, 0x32, 0xc2, 0xaf, 0xe5, 0x23, 0x45, 0x22, //0x8f40,0x90, 0x0e, 0x5d, 0x60, 0x0e, 0x12, 0x0f, 0xcb, 0xe0, 0xf5, 0x2c, 0x12, 0x0f, 0xc8, 0xe0, 0xf5, //0x8f50,0x2d, 0x80, 0x0c, 0x12, 0x0f, 0xcb, 0xe5, 0x30, 0xf0, 0x12, 0x0f, 0xc8, 0xe5, 0x31, 0xf0, 0xa2, //0x8f60,0x32, 0x92, 0xaf, 0x22, 0xd2, 0x01, 0xc2, 0x02, 0xe4, 0xf5, 0x1f, 0xf5, 0x1e, 0xd2, 0x35, 0xd2, //0x8f70,0x33, 0xd2, 0x36, 0xd2, 0x01, 0xc2, 0x02, 0xf5, 0x1f, 0xf5, 0x1e, 0xd2, 0x35, 0xd2, 0x33, 0x22, //0x8f80,0xfb, 0xd3, 0xed, 0x9b, 0x74, 0x80, 0xf8, 0x6c, 0x98, 0x22, 0x12, 0x06, 0x69, 0xe5, 0x40, 0x2f, //0x8f90,0xf5, 0x40, 0xe5, 0x3f, 0x3e, 0xf5, 0x3f, 0xe5, 0x3e, 0x3d, 0xf5, 0x3e, 0xe5, 0x3d, 0x3c, 0xf5, //0x8fa0,0x3d, 0x22, 0xc0, 0xe0, 0xc0, 0x83, 0xc0, 0x82, 0x90, 0x3f, 0x0d, 0xe0, 0xf5, 0x33, 0xe5, 0x33, //0x8fb0,0xf0, 0xd0, 0x82, 0xd0, 0x83, 0xd0, 0xe0, 0x32, 0x90, 0x0e, 0x5f, 0xe4, 0x93, 0xfe, 0x74, 0x01, //0x8fc0,0x93, 0xf5, 0x82, 0x8e, 0x83, 0x22, 0x78, 0x7f, 0xe4, 0xf6, 0xd8, 0xfd, 0x75, 0x81, 0xcd, 0x02, //0x8fd0,0x0c, 0x98, 0x8f, 0x82, 0x8e, 0x83, 0x75, 0xf0, 0x04, 0xed, 0x02, 0x06, 0xa5                   //0x8fe0
};
//return 0: ok
uint8_t OV5640_Focus_Init(void)
{uint16_t i;uint16_t addr=0x8000;uint8_t state=0x8F;SCCB_WR_Reg(0x3000, 0x20);for(i=0;i<sizeof(OV5640_AF_Config);i++){SCCB_WR_Reg(addr,OV5640_AF_Config[i]);addr++;}SCCB_WR_Reg(0x3022,0x00);SCCB_WR_Reg(0x3023,0x00);SCCB_WR_Reg(0x3024,0x00);SCCB_WR_Reg(0x3025,0x00);SCCB_WR_Reg(0x3026,0x00);SCCB_WR_Reg(0x3027,0x00);SCCB_WR_Reg(0x3028,0x00);SCCB_WR_Reg(0x3029,0x7f);SCCB_WR_Reg(0x3000,0x00);i=0;do{state=SCCB_RD_Reg(0x3029);HAL_Delay(5);i++;if(i>1000)return 1;}while(state!=0x70);return 0;
}
//Single focus;return 0: ok
uint8_t OV5640_Focus_Single(void)
{uint8_t temp;uint16_t retry=0;SCCB_WR_Reg(0x3022,0x03);while(1){retry++;temp=SCCB_RD_Reg(0x3029);if(temp==0x10)break;HAL_Delay(5);if(retry>1000)return 1;}return 0;
}//Constant focus;return 0: ok
uint8_t OV5640_Focus_Constant(void)
{uint8_t temp=0;uint16_t retry=0;SCCB_WR_Reg(0x3023,0x01);SCCB_WR_Reg(0x3022,0x08);do{temp=SCCB_RD_Reg(0x3023);retry++;if(retry>1000)return 2;HAL_Delay(5);} while(temp!=0x00);SCCB_WR_Reg(0x3023,0x01);SCCB_WR_Reg(0x3022,0x04);retry=0;do{temp=SCCB_RD_Reg(0x3023);retry++;if(retry>1000)return 2;HAL_Delay(5);}while(temp!=0x00);return 0;
}void ov5640_speed_ctrl(void)
{SCCB_WR_Reg(0x3035 ,0x81);SCCB_WR_Reg(0x3037 ,0x02);
}

以上代码实现对OV5640的接口访问, 实现OV5640初始化（配置为640×80 RGB模式），并持续向外输出图像。

8. DMA发送机制

STM32通过串口接收指令，程序里设计一个标识变量scmd用于指示接收到的指令。需要在USB虚拟串口的接收函数里进行处理：

static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
{/* USER CODE BEGIN 6 */extern uint8_t scmd;if(Buf[0]==0x01) scmd=0x01;USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);USBD_CDC_ReceivePacket(&hUsbDeviceFS);return (USBD_OK);/* USER CODE END 6 */
}

以及在USART1的接收中断里进行处理：

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{if (huart ==  &huart1){if (aRxBuffer==0x01){scmd = 0x02;aRxBuffer=0x00;HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1);}else{HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1);}}return;}

STM32向上位机发送图像数据采用USB虚拟串口或串口DMA方式，程序里设计一个标识变量tx_busy，在当前DMA发送完后指示状态：

static int8_t CDC_TransmitCplt_FS(uint8_t *Buf, uint32_t *Len, uint8_t epnum)
{uint8_t result = USBD_OK;/* USER CODE BEGIN 13 */extern uint8_t tx_busy ;tx_busy = 0;UNUSED(Buf);UNUSED(Len);UNUSED(epnum);/* USER CODE END 13 */return result;
}

同样，对USART1的DMA发送完处理：

void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{extern uint8_t tx_busy;if (huart ==  &huart1){tx_busy = 0;}}

9. DCMI DMA地址自增方式

初始化DCMI DMA配置时，如将接收地址设置为不自增方式。后续的图像捕获需要工作在DMA接收地址自增方式，因此单独设计两个函数可用于切换。

void DCMI_DMA_MemInc_En(void)
{HAL_DMA_DeInit(&hdma_dcmi);hdma_dcmi.Init.MemInc = DMA_MINC_ENABLE;if (HAL_DMA_Init(&hdma_dcmi) != HAL_OK){Error_Handler();}
}void DCMI_DMA_MemInc_Den(void)
{HAL_DMA_DeInit(&hdma_dcmi);hdma_dcmi.Init.MemInc = DMA_MINC_DISABLE;if (HAL_DMA_Init(&hdma_dcmi) != HAL_OK){Error_Handler();}
}

10. 初始化修正函数

按照1.8版本HAL库，设计DCMI的初始化修正函数：

void PY_DCMI_Full_Init(void)
{hdcmi.Instance = DCMI;hdcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;hdcmi.Init.VSPolarity = DCMI_VSPOLARITY_HIGH;hdcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW;hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;hdcmi.Init.JPEGMode = DCMI_JPEG_DISABLE;hdcmi.Init.ByteSelectMode = DCMI_BSM_ALL;hdcmi.Init.ByteSelectStart = DCMI_OEBS_ODD;hdcmi.Init.LineSelectMode = DCMI_LSM_ALL;hdcmi.Init.LineSelectStart = DCMI_OELS_ODD;if (HAL_DCMI_Init(&hdcmi) != HAL_OK){Error_Handler();}
}

11. 主函数代码

在程序跑起来后，会先对OV5640接口进行典型寄存器读取并USART1串口输出，用于识别接口时序是否正常。然后进入命令等待，接收到指令后，再从OV5640输出的图像中截取数据串口DMA输出。

/* USER CODE BEGIN Header */
/********************************************************************************* @file           : main.c* @brief          : Main program body******************************************************************************* @attention** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:*                        opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <string.h>
#include "ov5640.h"
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
void DCMI_DMA_MemInc_En(void);
void DCMI_DMA_MemInc_Den(void);void PY_DCMI_Full_Init(void);
/* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
uint8_t aRxBuffer=0;uint8_t TxBuff[99] = {0};
uint8_t StatusFlag = 0;uint8_t ov5640_reg1 = 0xff;
uint8_t ov5640_reg2 = 0xff;HAL_StatusTypeDef dcmi_dma_status = HAL_OK;uint32_t* dcmi_data_buff;uint32_t DCMI_RN = 0;  //row number
uint32_t DCMI_CN = 0;  //column number
uint32_t DCMI_RS = 0;  //row start
uint32_t DCMI_CS = 0;  //column startuint8_t scmd = 0;
uint8_t tx_busy = 0;
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*/DCMI_HandleTypeDef hdcmi;
DMA_HandleTypeDef hdma_dcmi;UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_tx;/* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_DCMI_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//* USER CODE END 0 *//*** @brief  The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 */dcmi_data_buff = 0x30000000;/* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_DMA_Init();MX_USB_DEVICE_Init();MX_DCMI_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */if (HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1)!=HAL_OK){MX_USART1_UART_Init();HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1);}HAL_Delay(500); //Await OV5640 running stableSCCB_Rst();HAL_Delay(100);ov5640_reg1 = SCCB_RD_Reg(OV5640_CHIPIDH);ov5640_reg2 = SCCB_RD_Reg(OV5640_CHIPIDL);if((ov5640_reg1==0xff)||(ov5640_reg2==0xff)) while(1);;OV5640_Init(); HAL_Delay(1);OV5640_RGB565_Mode(); HAL_Delay(1);OV5640_Focus_Init(); HAL_Delay(1);ov5640_speed_ctrl(); HAL_Delay(1);OV5640_OutSize_Set(16,4,640,484); HAL_Delay(1);HAL_DCMI_DeInit(&hdcmi);PY_DCMI_Full_Init();/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){if (scmd==1){scmd = 0;OV5640_Focus_Single();DCMI_DMA_MemInc_En();HAL_DCMI_DisableCrop (&hdcmi);TxBuff[0]=0x55;TxBuff[1]=0xaa;TxBuff[2]=0x02; //OV2640 LabelCDC_Transmit_FS(TxBuff, 3);HAL_Delay(100);dcmi_dma_status = HAL_DCMI_Init(&hdcmi);for (uint8_t i=0; i<10;i++){HAL_DCMI_DisableCrop (&hdcmi);DCMI_RN = 48;DCMI_CN = 1280;DCMI_RS = 48*i;DCMI_CS = 0;HAL_DCMI_ConfigCrop (&hdcmi, DCMI_CS, DCMI_RS, DCMI_CN, DCMI_RN);HAL_Delay(1);HAL_DCMI_EnableCrop (&hdcmi);HAL_Delay(1);dcmi_dma_status = HAL_DCMI_Start_DMA(&hdcmi, DCMI_MODE_SNAPSHOT, dcmi_data_buff, DCMI_CN*DCMI_RN/4);while(HAL_DMA_GetState(&hdcmi)==HAL_DMA_STATE_BUSY) ;HAL_DCMI_Stop(&hdcmi);tx_busy = 1;CDC_Transmit_FS((uint8_t *)dcmi_data_buff, 61440);while(tx_busy!=0) ;}}if (scmd==2){scmd = 0;OV5640_Focus_Single();DCMI_DMA_MemInc_En();HAL_DCMI_DisableCrop (&hdcmi);TxBuff[0]=0x55;TxBuff[1]=0xaa;TxBuff[2]=0x02; //OV2640 LabelHAL_UART_Transmit(&huart1, TxBuff, 3, 0xFFFFFF);HAL_Delay(100);dcmi_dma_status = HAL_DCMI_Init(&hdcmi);for (uint8_t i=0; i<10;i++){HAL_DCMI_DisableCrop (&hdcmi);DCMI_RN = 48;DCMI_CN = 1280;DCMI_RS = 48*i;DCMI_CS = 0;HAL_DCMI_ConfigCrop (&hdcmi, DCMI_CS, DCMI_RS, DCMI_CN, DCMI_RN);HAL_Delay(1);HAL_DCMI_EnableCrop (&hdcmi);HAL_Delay(1);dcmi_dma_status = HAL_DCMI_Start_DMA(&hdcmi, DCMI_MODE_SNAPSHOT, dcmi_data_buff, DCMI_CN*DCMI_RN/4);while(HAL_DMA_GetState(&hdcmi)==HAL_DMA_STATE_BUSY) ;HAL_DCMI_Stop(&hdcmi);tx_busy = 1;HAL_UART_Transmit_DMA(&huart1, (uint8_t *)dcmi_data_buff, 61440);while(tx_busy!=0) ;}}/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}/*** @brief System Clock Configuration* @retval None*/
void SystemClock_Config(void)
{RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Supply configuration update enable*/HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);/** Configure the main internal regulator output voltage*/__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48|RCC_OSCILLATORTYPE_HSI;RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;RCC_OscInitStruct.PLL.PLLM = 32;RCC_OscInitStruct.PLL.PLLN = 480;RCC_OscInitStruct.PLL.PLLP = 2;RCC_OscInitStruct.PLL.PLLQ = 2;RCC_OscInitStruct.PLL.PLLR = 2;RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;RCC_OscInitStruct.PLL.PLLFRACN = 0;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses clocks*/RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK){Error_Handler();}HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI48, RCC_MCODIV_2);
}/*** @brief DCMI Initialization Function* @param None* @retval None*/
static void MX_DCMI_Init(void)
{/* USER CODE BEGIN DCMI_Init 0 *//* USER CODE END DCMI_Init 0 *//* USER CODE BEGIN DCMI_Init 1 *//* USER CODE END DCMI_Init 1 */hdcmi.Instance = DCMI;hdcmi.Init.SynchroMode = DCMI_SYNCHRO_EMBEDDED;hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;hdcmi.Init.SyncroCode.FrameEndCode = 0;hdcmi.Init.SyncroCode.FrameStartCode = 0;hdcmi.Init.SyncroCode.LineStartCode = 0;hdcmi.Init.SyncroCode.LineEndCode = 0;hdcmi.Init.JPEGMode = DCMI_JPEG_DISABLE;hdcmi.Init.ByteSelectMode = DCMI_BSM_ALL;hdcmi.Init.ByteSelectStart = DCMI_OEBS_ODD;hdcmi.Init.LineSelectMode = DCMI_LSM_ALL;hdcmi.Init.LineSelectStart = DCMI_OELS_ODD;if (HAL_DCMI_Init(&hdcmi) != HAL_OK){Error_Handler();}/* USER CODE BEGIN DCMI_Init 2 *//* USER CODE END DCMI_Init 2 */}/*** @brief USART1 Initialization Function* @param None* @retval None*/
static void MX_USART1_UART_Init(void)
{/* USER CODE BEGIN USART1_Init 0 *//* USER CODE END USART1_Init 0 *//* USER CODE BEGIN USART1_Init 1 *//* USER CODE END USART1_Init 1 */huart1.Instance = USART1;huart1.Init.BaudRate = 230400;huart1.Init.WordLength = UART_WORDLENGTH_8B;huart1.Init.StopBits = UART_STOPBITS_1;huart1.Init.Parity = UART_PARITY_NONE;huart1.Init.Mode = UART_MODE_TX_RX;huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;huart1.Init.OverSampling = UART_OVERSAMPLING_16;huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;if (HAL_UART_Init(&huart1) != HAL_OK){Error_Handler();}if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK){Error_Handler();}if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK){Error_Handler();}if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK){Error_Handler();}/* USER CODE BEGIN USART1_Init 2 *//* USER CODE END USART1_Init 2 */}/*** Enable DMA controller clock*/
static void MX_DMA_Init(void)
{/* DMA controller clock enable */__HAL_RCC_DMA1_CLK_ENABLE();/* DMA interrupt init *//* DMA1_Stream0_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 0, 0);HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);/* DMA1_Stream1_IRQn interrupt configuration */HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 0, 0);HAL_NVIC_EnableIRQ(DMA1_Stream1_IRQn);}/*** @brief GPIO Initialization Function* @param None* @retval None*/
static void MX_GPIO_Init(void)
{GPIO_InitTypeDef GPIO_InitStruct = {0};/* GPIO Ports Clock Enable */__HAL_RCC_GPIOA_CLK_ENABLE();__HAL_RCC_GPIOE_CLK_ENABLE();__HAL_RCC_GPIOD_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();__HAL_RCC_GPIOB_CLK_ENABLE();/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOE, GPIO_PIN_7|GPIO_PIN_8, GPIO_PIN_SET);/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOD, GPIO_PIN_10, GPIO_PIN_SET);/*Configure GPIO pin Output Level */HAL_GPIO_WritePin(GPIOD, GPIO_PIN_11, GPIO_PIN_RESET);/*Configure GPIO pins : PE7 PE8 */GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);/*Configure GPIO pins : PD10 PD11 */GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);/*Configure GPIO pin : PA8 */GPIO_InitStruct.Pin = GPIO_PIN_8;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF0_MCO;HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);}/* USER CODE BEGIN 4 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{if (huart ==  &huart1){if (aRxBuffer==0x01){scmd = 0x02;aRxBuffer=0x00;HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1);}else{HAL_UART_Receive_IT(&huart1, (uint8_t *)&aRxBuffer, 1);}}return;}void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{if (huart ==  &huart1){tx_busy = 0;}}void DCMI_DMA_MemInc_En(void)
{HAL_DMA_DeInit(&hdma_dcmi);hdma_dcmi.Init.MemInc = DMA_MINC_ENABLE;if (HAL_DMA_Init(&hdma_dcmi) != HAL_OK){Error_Handler();}
}void DCMI_DMA_MemInc_Den(void)
{HAL_DMA_DeInit(&hdma_dcmi);hdma_dcmi.Init.MemInc = DMA_MINC_DISABLE;if (HAL_DMA_Init(&hdma_dcmi) != HAL_OK){Error_Handler();}
}void PY_DCMI_Full_Init(void)
{hdcmi.Instance = DCMI;hdcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;hdcmi.Init.VSPolarity = DCMI_VSPOLARITY_HIGH;hdcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW;hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;hdcmi.Init.JPEGMode = DCMI_JPEG_DISABLE;hdcmi.Init.ByteSelectMode = DCMI_BSM_ALL;hdcmi.Init.ByteSelectStart = DCMI_OEBS_ODD;hdcmi.Init.LineSelectMode = DCMI_LSM_ALL;hdcmi.Init.LineSelectStart = DCMI_OELS_ODD;if (HAL_DCMI_Init(&hdcmi) != HAL_OK){Error_Handler();}
}/* USER CODE END 4 *//*** @brief  This function is executed in case of error occurrence.* @retval None*/
void Error_Handler(void)
{/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state */__disable_irq();while (1){}/* USER CODE END Error_Handler_Debug */
}#ifdef  USE_FULL_ASSERT
/*** @brief  Reports the name of the source file and the source line number*         where the assert_param error has occurred.* @param  file: pointer to the source file name* @param  line: assert_param error line source number* @retval None*/
void assert_failed(uint8_t *file, uint32_t line)
{/* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

12. STM32H750完整代码

基于STM32CUBEIDE工程：
https://download.csdn.net/download/hwytree/20418528

13. 上位机软件

配套测试用上位机软件分为一维码识别和二维码识别两个软件，下载地址：
一维码识别
https://download.csdn.net/download/hwytree/20306099
二维码识别
https://download.csdn.net/download/hwytree/20306112

14. 一维码识别效果

15. 二维码识别效果

16. 上位机实现解码原理范例

https://blog.csdn.net/hwytree/article/details/119004881

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