远程时钟控制系统

编写远程时钟控制系统的过程中，此过程中解决了上篇提到的串口与定时器的问题，很好的用到串口通信协议，可通过串口发送菜单调节时钟，发布广告，控制1602显示屏

#include <reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
void cun_shijian(uchar);
char shi, fen, miao,yue,ri;
long int nian;
void xianshishijian();
void display();
void guanggao();
sbit rs=P2^0;
sbit rw=P2^1;
sbit en=P2^2;
uchar code table[]="  2012-11-30";
uchar code table1[]="  23:59:40";
uchar code table4[]="menu";
uchar  flag, aj,yp1,yp2,lx1,lx2,hf,ts,ggao,tiaom,tiaom2,tiaof,xs,tiaof2,tiaos,tiaos2,tx;
uchar table2[]="  I LOVE 89C51";
uchar table3[]=" I LOVE ELECTRON";
void delay(uint z)	//延时函数
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}
void write_com(uchar aa)	 //写命令
{
	rs=0;
	rw=0;
	P0=aa;
	delay(5);
	en=1;
	delay(5);
	en=0;
}
//////////////////////////////////////////////
void write_data(uchar bb)  //写数据
{
	rs=1;
	rw=0;
	P0=bb;
	delay(5);
	en=1;
	delay(5);
	en=0;
}
void write_sfm(uchar add,uchar bb)	 //写时间
{
	uchar shi,ge;
	shi=bb/10;
	ge=bb%10;
	write_com(0x80+0x50+add);
	write_data(0x30+shi);
	write_data(0x30+ge);
}
void write_yr(uchar add1,uchar bb) //写日期
{
	uchar s,g;
	s=bb/10;
	g=bb%10;
	write_com(0x80+0x10+add1);
	write_data(0x30+s);
	write_data(0x30+g);
}
void write_n(uchar add2,uchar bb) //写年
{
	uchar qi,ba,sh,gg;
	qi=bb/1000;
	ba=bb%1000/100;
	sh=bb%100/10;
	gg=bb%10;
	write_com(0x80+0x10+add2);
	write_data(0x30+qi);
	write_data(0x30+ba);
	write_data(0x30+sh);
	write_data(0x30+gg);
}
void guanggao()
{
		uchar num;
		write_com(0x80+0x10);
		for(num=0;num<14;num++)
		{
			write_data(table2[num]);
			delay(5);
		}
	 	write_com(0x80+0x50);
		for(num=0;num<16;num++)
		{
			write_data(table3[num]);
			delay(5);
		}
		for(num=0;num<16;num++)
		{
			write_com(0x18);
		}
		delay(1000);
}	
void wangxin_write(char *mes,int len)
{
   uint i;
   for(i=0;i<len;i++)
   {
   	 SBUF=*mes++;
	 while(!TI);
	 TI=0;
   }
}

//////////////////////////////////////////////////////////
void init()			//初始化
{
	uchar num;
	miao=40;
	fen=59;
	shi=23;
	nian=2012;
	yue=11;
	ri=30;
	en=0;
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01); 	
	write_com(0x80+0x10);
	for(num=0;num<12;num++)
		{
			write_data(table[num]);
			delay(5);
		}
	 write_com(0x80+0x50);
		for(num=0;num<10;num++)
		{
			write_data(table1[num]);
			delay(5);
		}
		for(num=0;num<16;num++)
		{
			write_com(0x18);
		}
		delay(200);
   	TMOD=0x20;
	TH0=(256-200)/256;
	TL0=(256-200)%256;
	EA=1;
	ET0=1;
	TR0=1;
}
/////////////////////////////////////////////////////
void zuoyi()
{	
	uchar o;
	for(o=0;o<1;o++)
	{
		write_com(0x18);
	}
}	
void youyi()
{
	uchar p;
	for(p=0;p<1;p++)
	{
		write_com(0x1c);
	}
}
void lxyouyi()
{
	uchar o;
	for(o=0;o<80;o++)
	{
		write_com(0x1c);
		delay(200);
	}	
}
void lxzuoyi()
{
	uchar p;
	for(p=0;p<80;p++)
	{
		write_com(0x18);
		delay(200);
	}
}
void tiaoshijian1()
{
	miao++;
		if(miao==60)
		{
			miao=0;
			fen++;
			if(fen==60)
			{
				fen=0;
				shi++;
				if(shi==24)
				{
					shi=0;
					ri++;
					if(ri==31)
					{
						ri=1;
						yue++;
						if(yue==13)
						{
							yue=1;
							nian++;
							if(nian==9999)
							{
								nian=0;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
			}
			write_sfm(5,fen);
		}
		write_sfm(8,miao);
}
void tiaoshijian11()
{
		fen++;
			if(fen==60)
			{
				fen=0;
				shi++;
				if(shi==24)
				{
					shi=0;
					ri++;
					if(ri==31)
					{
						ri=1;
						yue++;
						if(yue==13)
						{
							yue=1;
							nian++;
							if(nian==9999)
							{
								nian=0;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
			}
			write_sfm(5,fen);
}
void tiaoshijian111()
{
	shi++;
	if(shi==24)
	{
		shi=0;
		ri++;
		if(ri==30)
		{
			ri=1;
			yue++;
			if(yue==13)
			{
				yue=1;
				nian++;
				if(nian==9999)
				{
					nian=0;
			    }
				write_n(2,nian);
			 }
			 write_yr(7,yue);
		}
		write_yr(10,ri);
	}
	write_sfm(2,shi);
}

void  tiaoshijian2()
{
	miao--;
		if(miao==-1)
		{
			miao=59;
			fen--;
			if(fen==-1)
			{
				fen=59;
				shi--;
				if(shi==-1)
				{
					shi=23;
					ri--;
					if(ri==0)
					{
						ri=30;
						yue--;
						if(yue==0)
						{
							yue=12;
							nian--;
							if(nian==0)
							{
								nian=9999;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
			}
			write_sfm(5,fen);
		}
		write_sfm(8,miao);
}
void tiaoshijian22()
{
		fen--;
			if(fen==-1)
			{
				fen=59;
				shi--;
				if(shi==-1)
				{
					shi=23;
					ri--;
					if(ri==0)
					{
						ri=30;
						yue--;
						if(yue==0)
						{
							yue=12;
							nian--;
							if(nian==0)
							{
								nian=9999;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
			}
			write_sfm(5,fen);
}
void tiaoshijian222()
{
		        shi--;
				if(shi==-1)
				{
					shi=23;
					ri--;
					if(ri==0)
					{
						ri=30;
						yue--;
						if(yue==0)
						{
							yue=12;
							nian--;
							if(nian==0)
							{
								nian=9999;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
}
void xianshishijian()
{
	SBUF=nian/1000+0x30;			
	delay(10);
	TI=0;
	SBUF=nian%1000/100+0x30;			
	delay(5);
	TI=0;
	SBUF=nian%100/10+0x30;					
	delay(5);
	TI=0;
	SBUF=nian%10+0x30;			
	delay(5);
	TI=0;
	SBUF='-';			
	delay(5);
	TI=0;
	SBUF=yue/10+0x30;			
	delay(5);
	TI=0;
	SBUF=yue%10+0x30;					
	delay(5);
	TI=0;
	SBUF='-';			
	delay(5);
	TI=0;
	SBUF=ri/10+0x30;			
	delay(5);
	TI=0;
	SBUF=ri%10+0x30;			
	delay(5);
	TI=0;
	SBUF=' ';					
	delay(5);
	TI=0;
	SBUF=shi/10+0x30;					
	delay(5);
	TI=0;
	SBUF=shi%10+0x30;			
	delay(5);
	TI=0;
	SBUF=':';			
	delay(5);
	TI=0;
	SBUF=fen/10+0x30;					
	delay(5);
	TI=0;
	SBUF=fen%10+0x30;			
	delay(5);
	TI=0;
	SBUF=':';			
	delay(5);
	TI=0;
	SBUF=miao/10+0x30;			
	delay(5);
	TI=0;
	SBUF=miao%10+0x30;					
	delay(5);
	TI=0;
} 
///////////////////////////////////////
void init1()
{
	TMOD=0x20;
	TH1=0xfd;
	TL1=0xfd;
	TR1=1;
	REN=1;
	SM0=0;
	SM1=1;
	ES=1;
	EA=1;
}
 /////////////////////////////////////////
void main()	 //主函数
{
	init();
	while(1) 
   {					
			init1();
			while(1)
				{			
					display();		
			    }
  }
}
void timer0() interrupt 1 
{
	uchar count;
	TH0=(256-200)/256;
	TL0=(256-200)%256;
	count++;
 if(count==150)
	{
		count=0;
		miao++;
		if(miao==60)
		{
			miao=0;
			fen++;
			if(fen==60)
			{
				fen=0;
				shi++;
				if(shi==24)
				{
					shi=0;
					ri++;
					if(ri==31)
					{
						ri=1;
						yue++;
						if(yue==13)
						{
							yue=1;
							nian++;
							if(nian==9999)
							{
								nian=0;
						    }
							write_n(2,nian);
					    }
						write_yr(7,yue);
					}
					write_yr(10,ri);
				}
				write_sfm(2,shi);
			}
			write_sfm(5,fen);
		}
		write_sfm(8,miao);
//		cun_shijian();	 
	}					
}

void display()
{
	if(flag==1)								    
	{
		flag=0;
		if(ts==1)
		{
			ES=0;
			ts=0;
			wangxin_write("a调时间 z特效 h恢复时间 i广告 x显示时间",74);
			ES=1 ;
		}
		if(aj==1)
		{	
			ES=0;
			aj=0;
			wangxin_write("f秒增 g秒减 k分加 n分减 p时加 q时减",65);
			ES=1;	
		}
		if(tx==1)
		{	
			ES=0;
			tx=0;
			wangxin_write("b左移 c右移 d连续左移 s连续右移",59);
			ES=1;	
		}		
		if(yp1==1)
		{
			ES=0;
			yp1=0;									
			zuoyi();									
			ES=1;
		}	
		if(yp2==1)
		{
			ES=0;	
			yp2=0;
			youyi();
			ES=1;
		}	
		if(lx1==1)
		{
			ES=0;
			TR0=0;
			lxzuoyi();
			lx1=0;
			ES=1;
		}				
		if(lx2==1)
		{
			ES=0;
			TR0=0;
			lxyouyi();
			lx2=0;
			ES=1 ;
		}	
		if(tiaom==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+10);
			tiaoshijian1();
			tiaom=0;
			ES=1;
		}			
		if(tiaom2==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+10);
			tiaoshijian2();
			tiaom2=0;
			ES=1;
		}
			if(tiaof==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+7);
			tiaoshijian11();
			tiaof=0;
			ES=1;
		}			
		if(tiaof2==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+7);
			tiaoshijian22();
			tiaof2=0;
			ES=1;
		}
			if(tiaos==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+4);
			tiaoshijian111();
			tiaof=0;
			ES=1;
		}			
		if(tiaos2==1)
		{
			ES=0;
			TR0=0;
			write_com(0x80+0x50+4);
			tiaoshijian222();
			tiaos2=0;
			ES=1;
		}				
		if(hf==1)
		{	
			uchar num;
			ES=0;
		    write_com(0x01);
			write_n(2,nian);
			write_yr(7,yue);
			write_yr(10,ri);
			write_sfm(2,shi);
			write_sfm(5,fen);
			write_sfm(8,miao);
			for(num=0;num<16;num++)
			{
				write_com(0x18);
			}
			delay(200);
			TR0=1;
			hf=0;
			ES=1;
		}
		if(ggao==1)
		{
			ES=0;
			TR0=0;
			write_com(0x01);
			guanggao();
			ggao=0;
			ES=1;
		}
		if(xs==1)
		{
			ES=0;
			xianshishijian();
			xs=0;
			ES=1;
		}
   	}	  
}

/*void cun_shijian()
{
	uchar s,f,ma;
	s=shi;
	f=fen;
	ma=miao;
}  */
void ser() interrupt 4	  
{	
	uchar aa;
	RI=0;		
	aa=SBUF;					  
	flag=1; 
	if(aa==*table4)
	ts=1;
	else if(aa=='a')
	aj=1;
	else if(aa=='b')
	yp1=1;
	else if(aa=='c')
	yp2=1;
	else if(aa=='d')
	lx1=1;
	else if(aa=='s')
	lx2=1;
	else if(aa=='f')
	tiaom=1;
	else if(aa=='g')
	tiaom2=1;
	else if(aa=='k')
	tiaof=1;
	else if(aa=='n')
	tiaof2=1;
	else if(aa=='p')
	tiaos=1;
	else if(aa=='q')
	tiaos2=1;
	else if(aa=='h')
	hf=1;
	else if(aa=='i')
	ggao=1;
	else if(aa=='z')
	tx=1;
	else if(aa=='x')
	xs=1;
}