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zcy0517 发表于 2014-3-8 10:06:21

OV7670配置问题

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 );
}

谁能看得懂么？这段代码是干嘛的

zcy0517 发表于 2014-3-8 10:44:09

unsigned int startx,unsigned int starty,unsigned int width, unsigned int height这个定义表示什么呢？{:shy:}

zcy0517 发表于 2014-3-8 20:40:10

SOS!!!!!!!!!!!!

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