lcd.c

AVR单片机系统开发经典实例部分源程序

void bmp_tran(unsigned char x,unsigned char y,unsigned char high,unsigned char width,const unsigned char *bmp_p)
     {
	  unsigned char i,j;
	  x+=4;
	  for(j=0;j<high;j++)
	     {
		  for(i=0;i<width;i++)
		    {
			 ocmj_write(0xf3);
			 ocmj_write(x);
			 ocmj_write(y);
			 ocmj_write(*bmp_p);
			 bmp_p++;
			 x++;
			}
		  x-=width;
		  y++;	
		 }
	 }	 
/*       传送LCD内部汉字数据到LCD         */
/*       x:0x00~0x07 y:0x00~0x03          */
void hz_tran(unsigned char x,unsigned char y,unsigned char *hz_p)
    {
	 x+=2;
     while((*hz_p)!=0)
	    {
		 ocmj_write(0xf0);
		 ocmj_write(x);
		 ocmj_write(y);
		 ocmj_write(*hz_p-0xa0);
		 hz_p++;
		 ocmj_write(*hz_p-0xa0);
		 hz_p++;
		 if(x<0x09)
 		    x++;
		 else
		    {
			 x=0x02;
			 y++;
			}	
		}
	}
/*          传送ASCII字母到LCD            */
/*          x:0x00~0x0f y:0~64            */	
void asc_tran(unsigned char x,unsigned char y,unsigned char *asc_p)
    {
	 x+=4;
	 while((*asc_p)!=0)
	    {
		 ocmj_write(0xf1);
		 ocmj_write(x);
		 ocmj_write(y);
		 ocmj_write(*asc_p);
		 asc_p++;
		 if (x<0x13) 
		    x++;
		 else
		   {
		    x=0x04;
			y+=8;		    
		   }	
		}	
	 }
/*            画点函数              */
void pset(unsigned char x,unsigned char y)
     {
	  ocmj_write(0xf2);
	  ocmj_write(x+32);
	  ocmj_write(y);
	 }	
/*             画线函数          */	 
void line(unsigned char x1,unsigned char y1,unsigned char x2,unsigned char y2)
{
    unsigned char t;
	signed int xerr=0,yerr=0;
	signed int delta_x,delta_y,distance;
	signed char incx,incy;

/* 	计算两个方向的长度 */
	delta_x=x2-x1;
	delta_y=y2-y1;

/* 计算增量的方向,增量为"0"表示为垂直或水平线 */
	if(delta_x>0) 
	     incx=1;
	else 
	    {
		 if( delta_x==0 )
		      incx=0;
		 else 
		      {
			   incx=-1;
			   delta_x =-delta_x;
			  }
		}
	if(delta_y>0) 
	      incy=1;
	else 
	    {
		 if( delta_y==0 )
		     incy=0;
		 else 
		     {
			  incy=-1;
			  delta_y =-delta_y;
			 }
		}
/*  确定画线的范围 */
	if( delta_x > delta_y ) distance=delta_x;
	else distance=delta_y;

/* 画线 */
	for(t=0;t<= distance+1;t++) 
	   {
		ocmj_write(0xf2);
	    ocmj_write(x1+32);
	    ocmj_write(y1);
 	    xerr += delta_x ;
		yerr += delta_y ;
		if( xerr > distance ) 
		    {
			xerr-=distance;
 		    x1+=incx;
		    }
		if( yerr > distance ) 
		    {
			yerr-=distance;
 		    y1+=incy;
    		}
  	  }
}	 
/*            画圆函数             */
void circle(unsigned char x0,unsigned char y0,unsigned char r)
   {
	unsigned char x,y;
	unsigned int xx,rr,xt,yt,rs;
	yt=r;
	rr=r*r+1;			//补偿 1 修正方形
	rs=yt*3/4;      //画8分之一圆弧
	for (xt=0;xt<=rs;xt++)
	{
		xx=xt*xt;
		while ((yt*yt)>(rr-xx))
		      yt--;
		x=x0+xt;		//第一象限
		y=y0-yt;
		pset(x,y);
		x=x0-xt;		//第二象限
		pset(x,y);
		y=y0+yt;		//第三象限
		pset(x,y);
		x=x0+xt;		//第四象限
		pset(x,y);
/******45度镜象画另外8分之一圆弧******/
		x=x0+yt;		//第一象限
		y=y0-xt;
		pset(x,y);
		x=x0-yt;		//第二象限
		pset(x,y);
		y=y0+xt;		//第三象限
		pset(x,y);
		x=x0+yt;		//第四象限
		pset(x,y);
	}
} 	
void putchar(unsigned char newx,unsigned char newy,unsigned char data)
   {
    static unsigned char x,y;
	if(newx<16)
	     x=newx+4;
	if(newy<64)
	     y=newy;	 		 
		 ocmj_write(0xf1);
		 ocmj_write(x);
		 ocmj_write(y);
		 ocmj_write(data);
		 if (x<0x13) 
		    x++;
		 else
		   {
		    x=0x04;
			if(y<56)
			   y+=8;
			else
			   {
			    ocmj_write(0xf4);
				y=0;
			   }   		    
			}
   }    
/*       MAIN入口         */
void main(void)
    {
	unsigned char i;
	CLI();
    XDIV  = 0x00;
	MCUCR = 0x00; 
	EICRB  = 0x00; //external interrupts sources
    EIMSK = 0x00;
	ocmj_init();//初始化
	timer0_init();
	timer2_init();
	init_kb();
	TIMSK = 0x01; //timer interrupt sources
	EIMSK=0x10;
	DDRF=0x00;
	PORTF=0xfc;
	adc1=0;
	adc2=0;
	ADMUX=0;
	ADCSRA=0xdf;
	timecal();
	SEI();
	DDRB=0x80;	
	while(1)
       { 
		ocmj_write(0xf4);//清屏
		/*debug
		hz_tran(1,0,"测试扫描码");
		while(1)
		  {
		   cls(0,1,3,8);
		   asc_tran(0,16,kb_buffer);
		   delay_ms(100);
		  }
		debug*/ 
    	ico_tran(0,0,sl_ico);//传送图标,也可用bmp_tran()传送
    	hz_tran(3,0,"广州大华");//传送内部汉字
    	hz_tran(2,1,"电子有限公司");
    	asc_tran(5,39,"HTTP://");//传送ASCII字符
    	asc_tran(2,50,"WWW.SL.COM.CN");
    	delay_ms(2000);//延时
    	ocmj_write(0xf4);//清屏
    	bmp_tran(4,2,60,8,hz1);//传送汉字"和"		
    	delay_ms(3000);
    	ocmj_write(0xf4);
    	bmp_tran(1,3,49,13,atmel_bmp);//传送ATMEL标志图形
    	asc_tran(2,54,"WWW.ATMEL.COM");
    	delay_ms(3000);
		ocmj_write(0xf4);
		bmp_tran(2,15,33,4,hz2);//传送汉字"欢"
		bmp_tran(6,15,33,4,hz3);//传送汉字"迎"
		bmp_tran(10,15,33,4,hz4);//传送汉字"您"
		hz_tran(0,0,"恭");
    	hz_tran(0,1,"祝");
		hz_tran(0,2,"各");
		hz_tran(0,3,"位");
		hz_tran(7,0,"万");
    	hz_tran(7,1,"事");
		hz_tran(7,2,"如");
		hz_tran(7,3,"意");
		delay_ms(3000);
		for(i=0;i<32;i++)
		   {
		    ocmj_write(0xf4);
		    line(i*2,32,64,i);
		    line(64,i,(127-i*2),32);
			line((127-i*2),32,64,(63-i));
		    line(64,(63-i),i*2,32);
 			delay_ms(100);
		   }
		for(i=0;i<32;i++)
		   {
		    ocmj_write(0xf4);
			circle(63,31,i);
			delay_ms(100);
		   } 
		ocmj_write(0xf4); 
		hz_tran(2,0,"测量电压");  
		hz_tran(1,1,"第一路");
		hz_tran(1,2,"第二路");
		for(i=0;i<100;i++)
		   {
		    cls(4,1,2,3); 						
			asc_tran(8,22,adctoasc(adc1)); 
    		asc_tran(8,38,adctoasc(adc2));
			timetoasc();
			delay_ms(200);
    	   }
		ocmj_write(0xf4);
		asc_tran(2,5,"PC");
		hz_tran(2,0,"机键盘输入");
		hz_tran(0,1,"按");
		asc_tran(2,21,"DEL");
		hz_tran(3,1,"键重新启动");
	    cls(0,2,2,8);
		putchar(0,32,':');
		putchar(99,99,'>');	
		keytime=0;		
        do{
		   i=getchar();
		   if(i!=0) 
		      putchar(99,99,i);
		  }		
		while(keytime<20);      	 	      
    	}  
	}