ov7720.c

采用32位嵌入式芯片SPCE3200（凌阳）设计的开发板,具有多媒体功能。其中包含了网络、SD卡、TV、UART等是全部十个C程序。

//=============================================================
//文件名称：OV7720.c
//功能描述: OV7720设置
//维护记录: 2007-8-14 by liuxue modify
//=============================================================

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

//=============================================================
// 语法格式：	void Delay(void);
// 实现功能：	延时一小段时间
// 参数：		无
// 返回值：		无
//=============================================================

void Delay(void)
{
	int i;
	for(i=0; i<2500; i++);
}

//=============================================================
// 语法格式：	void Delay(void);
// 实现功能：	延时一小段时间
// 参数：		无
// 返回值：		无
//=============================================================

int Ov7720_Init(unsigned int MODE, unsigned int ColorMode, unsigned int SensorFps)
{
	unsigned char temp = 0;
	IIC_Init();							// IIC初始化

//	temp = i2c_read8(0x3d);
//	if(temp != 0x03)
	{
		i2c_write8(0x12, 0x80);Delay();		// 初始化摄像头内的所有寄存器
		
		i2c_write8(0x3d, 0x03);Delay();	
		temp = i2c_read8(0x3d);
		if(temp != 0x03)
			return 0;
		if(MODE==VGA)
		{
			if(ColorMode == YUVIN)
			{
				i2c_write8(0x12, 0x20); Delay();	//ITU656+VGA+YUV
			}
			else if(ColorMode == RGB565IN)
			{
				i2c_write8(0x12, 0x26); Delay();	//ITU656+VGA+RGB565
			}	
			i2c_write8(0x17, 0x22);Delay();	// 设置视窗大小
			i2c_write8(0x18, 0xa4);Delay();
			i2c_write8(0x19, 0x07);Delay();
			i2c_write8(0x1a, 0xf0);Delay();
			i2c_write8(0x29, 0xA0);Delay();
			i2c_write8(0x2c, 0xF0);Delay();
			
			i2c_write8(0x67, 0x48);Delay();
		}
		else if(MODE == QVGA)
		{
			if(ColorMode == YUVIN)
			{
				i2c_write8(0x12, 0x60); Delay();	//ITU656+QVGA+YUV
			}
			else if(ColorMode == RGB565IN)
			{
				i2c_write8(0x12, 0x66); Delay();	//ITU656+QVGA+RGB565
			}
			
			i2c_write8(0x17, 0x3f);Delay();	// 设置视窗大小
			i2c_write8(0x18, 0x51);Delay();
			i2c_write8(0x19, 0x02);Delay();
			i2c_write8(0x1a, 0x79);Delay();
			i2c_write8(0x29, 0x51);Delay();
			i2c_write8(0x2c, 0x79);Delay();
			
			i2c_write8(0x65, 0x2f);Delay();
		}
	
		i2c_write8(0x32, 0x00);Delay();
		i2c_write8(0x2a, 0x00);Delay();
	
		if(SensorFps == 30)
		{
			i2c_write8(0x11, 0x01);Delay();
			i2c_write8(0x22, 0x98);Delay();
			i2c_write8(0x23, 0x02);Delay();
		}
		else if(SensorFps == 15)
		{
			i2c_write8(0x11, 0x03);Delay();
			i2c_write8(0x22, 0x4c);Delay();
			i2c_write8(0x23, 0x05);Delay();
		}
	
		i2c_write8(0x42, 0x7f);Delay();
		i2c_write8(0x4d, 0x09);Delay();
		i2c_write8(0x63, 0xe0);Delay();
		i2c_write8(0x64, 0xff);Delay();
		i2c_write8(0x66, 0x00);Delay();
		
		i2c_write8(0x13, 0xf0);Delay();	
		i2c_write8(0x0d, 0x41);Delay();	
		i2c_write8(0x0f, 0xc5);Delay();	
		i2c_write8(0x14, 0x11);Delay();	
		i2c_write8(0x24, 0x40);Delay();	
		i2c_write8(0x25, 0x30);Delay();	
		i2c_write8(0x26, 0xa1);Delay();	
		i2c_write8(0x2b, 0x00);Delay(); 
		i2c_write8(0x6b, 0xaa);Delay();	
		i2c_write8(0x13, 0xff);Delay();
			
		i2c_write8(0x90, 0x05);Delay();	
		i2c_write8(0x91, 0x01);Delay();	
		i2c_write8(0x92, 0x03);Delay();	
		i2c_write8(0x93, 0x00);Delay();	
		i2c_write8(0x94, 0xb0);Delay();	
		i2c_write8(0x95, 0x9d);Delay();	
		i2c_write8(0x96, 0x13);Delay();	
		i2c_write8(0x97, 0x16);Delay();	
		i2c_write8(0x98, 0x7b);Delay();	
		i2c_write8(0x99, 0x91);Delay();	
		i2c_write8(0x9a, 0x1e);Delay();	
		i2c_write8(0x9b, 0x08);Delay();	
		i2c_write8(0x9c, 0x20);Delay();	
		i2c_write8(0x9e, 0x81);Delay();	
		i2c_write8(0xa6, 0x04);Delay();
			
		i2c_write8(0x7e, 0x0c);Delay();	
		i2c_write8(0x7f, 0x16);Delay();	
		i2c_write8(0x80, 0x2a);Delay();	
		i2c_write8(0x81, 0x4e);Delay();	
	 	i2c_write8(0x82, 0x61);Delay();	
		i2c_write8(0x83, 0x6f);Delay();	
		i2c_write8(0x84, 0x7b);Delay();	
		i2c_write8(0x85, 0x86);Delay();	
		i2c_write8(0x86, 0x8e);Delay();	
		i2c_write8(0x87, 0x97);Delay();	
		i2c_write8(0x88, 0xa4);Delay();	
		i2c_write8(0x89, 0xaf);Delay();	
		i2c_write8(0x8a, 0xc5);Delay();	
		i2c_write8(0x8b, 0xd7);Delay();	
		i2c_write8(0x8c, 0xe8);Delay();	
		i2c_write8(0x8d, 0x20);Delay();
	
	}
	return 1;
}