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发表于 2013-5-29 15:56:44
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我这有C 语言的,不支持上传C文件，源码就贴出来
#include "SCCB.h"
#include "delay.h"
////////////////////////////
//功能：写OV7670寄存器
//返回：1-成功 0-失败
#define CHANGE_REG_NUM 173
unsigned char change_reg[CHANGE_REG_NUM][2]=
{
{0x3a, 0x04},
{0x40, 0xd0},
{0x12, 0x14},
{0x32, 0x80},
{0x17, 0x16},
{0x18, 0x04},
{0x19, 0x02},
{0x1a, 0x7b},//0x7a,
{0x03, 0x06},//0x0a,
{0x0c, 0x38},
{0x3e, 0x00},//
{0x70, 0x00},
{0x71, 0x00},
{0x72, 0x11},
{0x73, 0x00},//
{0xa2, 0x02},
{0x11, 0x01},
{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, 0x8f}, //0xe0},
{0x00, 0x00},//AGC
{0x10, 0x00},
{0x0d, 0x00},
{0x14, 0x10},//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, 0x00},
{0x4d, 0x40},
{0x4e, 0x20},
{0x69, 0x0c},///////////////////////
{0x6b, 0x40},//PLL
{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, 0x00},
{0x4f, 0x80},
{0x50, 0x80},
{0x51, 0x00},
{0x52, 0x22},
{0x53, 0x5e},
{0x54, 0x80},
{0x58, 0x9e},
{0x41, 0x08},
{0x3f, 0x00},
{0x75, 0x05},
{0x76, 0xc5},
{0x4c, 0x00},
{0x77, 0x01},
{0x3d, 0xc2}, //0xc0,
{0x4b, 0x09},
{0xc9, 0x60},
{0x41, 0x38},
{0x56, 0x40},//0x40, change according to Jim's request
{0x34, 0x11},
{0x3b, 0x02},//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, 0x03},
{0x55, 0x00},
{0x56, 0x40},
{0x3b, 0x42},//0x82,//0xc0,//0xc2, //night mode
};
unsigned char wrOV7670Reg(unsigned char regID, unsigned char regDat)
{
startSCCB();
if(0==SCCBwriteByte(0x42))
{
stopSCCB();
return(0);
}
delay_us(100);
if(0==SCCBwriteByte(regID))
{
stopSCCB();
return(0);
}
delay_us(100);
if(0==SCCBwriteByte(regDat))
{
stopSCCB();
return(0);
}
stopSCCB();
return(1);
}
////////////////////////////
//功能：读OV7660寄存器
//返回：1-成功 0-失败
unsigned char rdOV7670Reg(unsigned char regID, unsigned char *regDat)
{
//通过写操作设置寄存器地址
startSCCB();
if(0==SCCBwriteByte(0x42))
{
stopSCCB();
return(0);
}
usleep(100);
if(0==SCCBwriteByte(regID))
{
stopSCCB();
return(0);
}
stopSCCB();
usleep(100);
//设置寄存器地址后，才是读
startSCCB();
if(0==SCCBwriteByte(0x42))
{
stopSCCB();
return(0);
}
usleep(100);
*regDat=SCCBreadByte();
noAck();
stopSCCB();
return(1);
}
//(140,16,640,480) is good for VGA
//(272,16,320,240) is good for QVGA
/* config_OV7660_window */
void OV7670_config_window(unsigned int startx,unsigned int starty,unsigned int width, unsigned int height)
{
unsigned int endx;
unsigned int endy;// "v*2"必须
unsigned int temp_reg1, temp_reg2;
unsigned char state,temp;
endx=(startx+width);
endy=(starty+height+height);// "v*2"必须
state = rdOV7670Reg(0x03, &temp_reg1 );
temp_reg1 &= 0xf0;
state = rdOV7670Reg(0x32, &temp_reg2 );
temp_reg2 &= 0xc0;
// Horizontal
temp = temp_reg2|((endx&0x7)<<3)|(startx&0x7);
state = wrOV7670Reg(0x32, temp );
temp = (startx&0x7F8)>>3;
state = wrOV7670Reg(0x17, temp );
temp = (endx&0x7F8)>>3;
state = wrOV7670Reg(0x18, temp );
// Vertical
temp = temp_reg1|((endy&0x3)<<2)|(starty&0x3);
state = wrOV7670Reg(0x03, temp );
temp = starty>>2;
state = wrOV7670Reg(0x19, temp );
temp = endy>>2;
state = wrOV7670Reg(0x1A, temp );
}
/* OV7660_init() */
//返回1成功，返回0失败
unsigned char OV7670_init(void)
{
unsigned char temp;
unsigned int i=0;
//uchar ovidmsb=0,ovidlsb=0;
// InitSCCB();//io init..
temp=0x80;
if(0==wrOV7670Reg(0x12, temp)) //Reset SCCB
{
return 0 ;
}
usleep(5000);
for(i=0;i<CHANGE_REG_NUM;i++)
{
if( 0==wrOV7670Reg(change_reg[i][0],change_reg[i][1]))
{
return 0;
}
}
//OV7660_config_window(0,0,320,240);// set 240*320
// OV7670_config_window(272,16,320,240);// set 240*320
return 0x01; //ok
}
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