液晶时钟.c

1602液晶时钟

#include<reg51.h>
#define uchar unsigned  char
#define uint unsigned int
sbit rs=P3^5;
sbit lcden=P3^4;
sbit s1=P1^0;
sbit s2=P1^1;
sbit s3=P1^2;
uchar count,count1;
char shi,fen,miao;
uchar table[]=" 2008-4-09 wen";
uchar table1[]="   00:00:00";
void keyscan();
void delay(uint z)
{	uchar i;
	for(;z>0;z--)
	for(i=0;i<110;i++);
}

void write_com(uchar com)
{
	rs=0;
	lcden=0;
	P0=com;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}
void write_date(uchar date)
{
	rs=1;
	lcden=0;
	P0=date;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}
void init()
{
	uchar  num;
	
	lcden=0;
	delay(10);
	write_com(0x38);
	write_com(0x0C);
	write_com(0x06);
	write_com(0x01);
	write_com(0x80);
	for(num=0;num<15;num++)
		{
			write_date(table[num]);
			delay(20);
		}
	write_com(0x80+0x40);
	for(num=0;num<12;num++)
		{
			write_date(table1[num]);
			delay(20);
		}
	TMOD=0X01;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	EA=1;
	ET0=1;
	TR0=1;
}

write_sfm(uchar add,uchar date)
{
	uchar sh,ge;
	sh=date/10;
	ge=date%10;
	write_com(0x80+0x40+add);
	write_date(sh+0x30);
	write_date(ge+0x30);
}


void main()
{
	init();
	while(1)
		{
			keyscan();
		}

}

void time0() interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	count++;
		if(count==20)
		{	
			count=0;
			miao++;
			if(miao==60)
			{
				miao=0;
				fen++;
				if(fen==60)
					{
						fen=0;
						shi++;
						if(shi==24)
							{
								shi=0;
							}
						write_sfm(3,shi);
					}
				write_sfm(6,fen);
			}

			write_sfm(9,miao);
		}
}

void keyscan()
{
	if(s1==0)
		{
			delay(10);
			if(s1==0)
			{
				count1++;
				while(!s1);
				if(count1==1)
					{
						TR0=0;
						write_com(0x80+0x40+9);
						write_com(0x0f);
					}
				if(count1==2)
					{
						write_com(0x80+0x40+6);
					}
				if(count1==3)
					{
						write_com(0x80+0x40+3);
					}
				if(count1==4)
					{
						count1=0;
						TR0=1;
						write_com(0x0c);
					}

			}
		}
			
			if(count1!=0)
				{
					if(s2==0)
						{
							delay(10);
							if(s2==0)
								{
									while(!s2);
									if(count1==1)
										{
											miao++;
											if(miao==60)
												miao=0;
											write_sfm(9,miao);
											write_com(0x80+0x40+9);
										}
									if(count1==2)
										{
											fen++;
											if(fen==60)
												fen=0;
											write_sfm(6,fen);
											write_com(0x80+0x40+6);

										}
									if(count1==3)
										{
											shi++;
											if(shi==24)
												shi=0;
											write_sfm(3,shi);
											write_com(0x80+0x40+3);
										}
								}
						}
					if(s3==0)
						{
							delay(10);
							if(s3==0)
								{
									while(!s3);
									if(count1==1)
										{
											miao--;
											if(miao==-1)
												miao=59;
											write_sfm(9,miao);
											write_com(0x80+0x40+9);
										}
									if(count1==2)
										{
											fen--;
											if(fen==-1)
												fen=59;
											write_sfm(6,fen);
											write_com(0x80+0x40+6);
										}
									if(count1==3)
										{
											shi--;
											if(shi==-1)
												shi=23;
											write_sfm(3,shi);
											write_com(0x80+0x40+3);
										}


								}
						}



				}

		

}