#include<reg52.h>
typedef unsigned char uint8;
typedef unsigned int uint16;
sbit rs=P2^6; // 数据命令选择
sbit rw=P2^5; //读写选择
sbit e=P2^7; //使能
uint8 a[]="LCD Design of Tm"; //要显示的字符
uint8 num[]="0123456789";
uint8 b[8],shi,fen,miao;
void delay(uint16 i)
{
while(i--);
}
void wrc(uint8 c) //写命令
{
delay(1000);
rs=0;
rw=0;
e=0;
P0=c;
e=1;
delay(10);
e=0;
/*
P0=c<<4;
e=1;
e=0;*/ //四位的LCD要加上
}
void wrd(uint8 dat) //写数据
{
delay(1000);
rs=1;
rw=0;
e=0;
P0=dat;
e=1;
delay(10);
e=0;
/*
P0=dat<<4;
e=1;
e=0;*/ //四位的LCD要加上
rs=0;
}
void lcdinit()
{
delay(1000);
/* wrc(0x32);
wrc(0x28);
wrc(0x28); */ //四位的LCD要加上
wrc(0x38);
wrc(0x38);
wrc(0x38);
wrc(0x06);
wrc(0x0c);
wrc(0x01);
}
void time0init()
{
TMOD=0X01;
TH0=0XFC;
TL0=0X18; //1ms
TR0=1;
ET0=1;
EA=1;
}
void timepros()
{
b[0]=num[shi/10];
b[1]=num[shi%10];
b[2]=0x3a;
b[3]=num[fen/10];
b[4]=num[fen%10];
b[5]=0x3a;
b[6]=num[miao/10];
b[7]=num[miao%10];
}
void display()
{
uint8 i;
timepros();
wrc(0x00+0x80);
for(i=0;i<16;i++)
{
wrd(a[i]);
}
wrc(0x44+0x80);
wrd(b[0]);
wrd(b[1]);
wrd(b[2]);
wrd(b[3]);
wrd(b[4]);
wrd(b[5]);
wrd(b[6]);
wrd(b[7]);
}
void main()
{
lcdinit();
time0init();
while(1)
{
display();
}
}
void tim0() interrupt 1
{
static uint16 n;
TH0=0XFC;
TL0=0X18;//1ms
n++;
if(n==1000)
{
n=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==60)
{
shi=0;
miao=0;
fen=0;
}
}
}
}
// display();
}
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