ov7720.c

用OV7720制作摄像头的详细电路原理图

// =============================================================
// 文件名称：OV7720.c
// 功能描述: OV7720设置
// 维护记录: 2007-9-19 by chengju modify
// =============================================================

#include "SPCE3200_Register.h"
#include "SPCE3200_Constant.h"
#include "OV7720.h"
#include ".\I2C\I2C.h"

// =============================================================
// 语法格式：	void Delay(unsigned int Times);
// 实现功能：	延时一小段时间
// 参数：		Times:	延时的单位数
// 返回值：		无
// =============================================================
void Delay(unsigned int Times)
{
	int i = 0, j = 0;
	for(j = 0; j < Times; j++)
		for(i=0; i<1000; i++);
}

// =============================================================
// 语法格式：	void OV7720_Mode_Set(unsigned int MODE, unsigned int ColorMode);
// 实现功能：	设置摄像头模式
// 参数：		MODE:		VGA 或者 QVGA
// 				ColorMode:	RGB565IN 或者 YUVIN
// 返回值：		无
// =============================================================
void OV7720_Mode_Set(unsigned int MODE, unsigned int ColorMode)
{
	I2C_Init();									//  I2C初始化

	unsigned char temp = 0;
	temp = I2C_Read8(0x3d);
	if(temp == 0x03)
		return;
	I2C_Write8(0x12, 0x80);Delay(2);			// 初始化摄像头内的所有寄存器
	I2C_Write8(0x3d, 0x03);Delay(2);	

	if(MODE == VGA)
	{
		if(ColorMode == YUVIN)
		{
			I2C_Write8(0x12, 0x20); Delay(2);	// CCIR656+VGA+YUV
		}
		else if(ColorMode == RGB565IN)
		{
			I2C_Write8(0x12, 0x26); Delay(2);	// CCIR656+VGA+RGB565
		}
		I2C_Write8(0x17, 0x22);Delay(2);		// 设置视窗大小
		I2C_Write8(0x18, 0xa4);Delay(2);
		I2C_Write8(0x19, 0x07);Delay(2);
		I2C_Write8(0x1a, 0xf0);Delay(2);
		I2C_Write8(0x29, 0xA0);Delay(2);
		I2C_Write8(0x2c, 0xF0);Delay(2);
		
		I2C_Write8(0x67, 0x48);Delay(2);
	}
	else if(MODE == QVGA)
	{
		if(ColorMode == YUVIN)
		{
			I2C_Write8(0x12, 0x60); Delay(2);	// CCIR656+QVGA+YUV
		}
		else if(ColorMode == RGB565IN)
		{
			I2C_Write8(0x12, 0x66); Delay(2);	// CCIR656+QVGA+RGB565
		}
		I2C_Write8(0x17, 0x3f);Delay(2);		// 设置视窗大小
		I2C_Write8(0x18, 0x51);Delay(2);
		I2C_Write8(0x19, 0x02);Delay(2);
		I2C_Write8(0x1a, 0x79);Delay(2);
		I2C_Write8(0x29, 0x51);Delay(2);
		I2C_Write8(0x2c, 0x79);Delay(2);
		
		I2C_Write8(0x65, 0x2f);Delay(2);
	}

	I2C_Write8(0x32, 0x00);Delay(2);
	I2C_Write8(0x2a, 0x00);Delay(2);

	I2C_Write8(0x11, 0x01);Delay(2);			// 30FPS相关设置
	I2C_Write8(0x22, 0x98);Delay(2);
	I2C_Write8(0x23, 0x02);Delay(2);

	I2C_Write8(0x42, 0x7f);Delay(2);
	I2C_Write8(0x4d, 0x09);Delay(2);
	I2C_Write8(0x63, 0xe0);Delay(2);
	I2C_Write8(0x64, 0xff);Delay(2);
	I2C_Write8(0x66, 0x00);Delay(2);
	
	I2C_Write8(0x13, 0xf0);Delay(2);	
	I2C_Write8(0x0d, 0x41);Delay(2);	
	I2C_Write8(0x0f, 0xc5);Delay(2);	
	I2C_Write8(0x14, 0x11);Delay(2);	
	I2C_Write8(0x24, 0x40);Delay(2);	
	I2C_Write8(0x25, 0x30);Delay(2);	
	I2C_Write8(0x26, 0xa1);Delay(2);	
	I2C_Write8(0x2b, 0x00);Delay(2); 
	I2C_Write8(0x6b, 0xaa);Delay(2);	
	I2C_Write8(0x13, 0xff);Delay(2);
		
	I2C_Write8(0x90, 0x05);Delay(2);	
	I2C_Write8(0x91, 0x01);Delay(2);	
	I2C_Write8(0x92, 0x03);Delay(2);	
	I2C_Write8(0x93, 0x00);Delay(2);	
	I2C_Write8(0x94, 0xb0);Delay(2);	
	I2C_Write8(0x95, 0x9d);Delay(2);	
	I2C_Write8(0x96, 0x13);Delay(2);	
	I2C_Write8(0x97, 0x16);Delay(2);	
	I2C_Write8(0x98, 0x7b);Delay(2);	
	I2C_Write8(0x99, 0x91);Delay(2);	
	I2C_Write8(0x9a, 0x1e);Delay(2);	
	I2C_Write8(0x9b, 0x08);Delay(2);	
	I2C_Write8(0x9c, 0x20);Delay(2);	
	I2C_Write8(0x9e, 0x81);Delay(2);	
	I2C_Write8(0xa6, 0x04);Delay(2);
		
	I2C_Write8(0x7e, 0x0c);Delay(2);	
	I2C_Write8(0x7f, 0x16);Delay(2);	
	I2C_Write8(0x80, 0x2a);Delay(2);	
	I2C_Write8(0x81, 0x4e);Delay(2);	
 	I2C_Write8(0x82, 0x61);Delay(2);	
	I2C_Write8(0x83, 0x6f);Delay(2);	
	I2C_Write8(0x84, 0x7b);Delay(2);	
	I2C_Write8(0x85, 0x86);Delay(2);	
	I2C_Write8(0x86, 0x8e);Delay(2);	
	I2C_Write8(0x87, 0x97);Delay(2);	
	I2C_Write8(0x88, 0xa4);Delay(2);	
	I2C_Write8(0x89, 0xaf);Delay(2);	
	I2C_Write8(0x8a, 0xc5);Delay(2);	
	I2C_Write8(0x8b, 0xd7);Delay(2);	
	I2C_Write8(0x8c, 0xe8);Delay(2);	
	I2C_Write8(0x8d, 0x20);Delay(2);
}

// =============================================================
// 语法格式：	void OV7720_Image_VFlip(void);
// 实现功能：	摄像头图像垂直翻转
// 参数：		无
// 返回值：		无
// =============================================================
void OV7720_Image_VFlip(void)
{
	I2C_Write8(0x0c, 0x90);Delay(2);			//垂直翻转
}

// =============================================================
// 语法格式：	void OV7720_Image_HFlip(void);
// 实现功能：	摄像头图像水平翻转
// 参数：		无
// 返回值：		无
// =============================================================
void OV7720_Image_HFlip(void)
{
	I2C_Write8(0x0c, 0x50);Delay(2);			//水平翻转
}

// =============================================================
// 语法格式：	void OV7720_Image_HVFlip(void);
// 实现功能：	摄像头图像垂直翻转+水平翻转
// 参数：		无
// 返回值：		无
// =============================================================
void OV7720_Image_HVFlip(void)
{
	I2C_Write8(0x0c, 0xd0);Delay(2);			//垂直+水平翻转
}

// =============================================================
// 语法格式：	void OV7720_Image_Resume(void);
// 实现功能：	摄像头图像恢复
// 参数：		无
// 返回值：		无
// =============================================================
void OV7720_Image_Resume(void)
{
	I2C_Write8(0x0c, 0x10);Delay(2);			//还原
}