AT89C52单片机12864液晶显示程序

#include

#include

#include

#define uchar unsigned char

#define uint unsigned int

uchar value,shi=23,fen=59,miao=50,SI; uchar code table[16]= " 时分秒"; uchar code table1[16]="0123456789"; void time_display(uchar add,uchar dat); sbit rs=P2^4;

sbit rw=P2^5;

sbit e=P2^6;

//sbit rst=P2^3;

sbit s1=P1^0;

sbit s2=P1^1;

sbit s3=P1^2;

void delayu(uint t)

{

while(--t);

}

void delaym(uint t)

{

while(--t)

{

delayu(245);

delayu(245);

}

}

void write_com(uchar com)

{

rs=0;

rw=0;

e=1;

delayu(1);

P0=com;

delayu(10);

e=0;

}

void write_data(uchar date)

{

rs=1;

rw=0;

e=1;

delayu(1);

P0=date;

delayu(10);

e=0;

delayu(2);

}

void scy()

{

if(s1==0)

{

delaym(10);

if(s1==0)

{

SI++;

while(!s1);

ET0=0;

}

if(SI==1)

{

write_com(0x84);

write_com(0x0f);

while(s1&s2&s3);

}

if(SI==2)

{

write_com(0x82);

while(s1&s2&s3);

}

if(SI==3)

{

write_com(0x80);

delayu(20);

while(s1&s2&s3);

}

if(SI==4)

{

SI=0;

write_com(0x0c);

ET0=1;

}

}

if(!SI==0)

{ if(s3==0)

{

delaym(10);

if(s3==0)

{

delaym(100);

if(SI==1)

{

miao--;

if(miao==0)

{

miao=60;

time_display(4,miao);

write_com(0x84);

}

}

if(SI==2)

{

fen--;

if(fen==0)

{

fen=60;

time_display(2,fen);

write_com(0x82);

}

}

if(SI==3)

{

shi--;

if(shi==0)

{

shi=24;

time_display(0,shi);//将时间立即改变

write_com(0x80);

}

}

}

}

if(s2==0)

{

delaym(10);

if(s2==0)

{

delaym(100);

if(SI==1)

{

miao++;

if(miao==60)

{

miao=0;

time_display(4,miao);

write_com(0x84);

}

}

if(SI==2)

{

fen++;

if(fen==60)

{

fen=0;

time_display(2,miao);

write_com(0x82);

}

}

if(SI==3)

{

shi++;

if(shi==24)

{

shi=0;

time_display(0,miao);

write_com(0x80);

}

}

}

}

}

}

void init()

{

write_com(0x30);

delayu(10);

write_com(0x30);

delayu(10);

write_com(0x0e);

delayu(10);

write_com(0x01);

delayu(1);

write_com(0x06);

delayu(10);

//write_com(0x1a);

TMOD=0X01;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

TR0=1;

EA=1;

ET0=1;

}

void time_display(uchar add,uchar dat) {

uchar ge,sh;

ge=dat%10;

sh=dat/10;

write_com(0x80+add);

write_data(0x30+sh);

write_data(0x30+ge);

write_com(0x80+add);

}

void time_deal()

{

if(value==20)

{

value=0;

miao++;

if(miao==60)

{

miao=0;

fen++;

if(fen==60)

{

fen=0;

shi++;

if(shi==24)

{

shi=0;

}

}

}

}

if(s1==1)

{time_display(4,miao);time_display(2,fen);time_display(0,shi);} }

void main()

{

uchar i;

init();

write_com(0x80);

delayu(100);

for(i=0;i<12;i++)

{

write_data(table[i]);

}

while(1)

{

time_deal();

scy();

}

}

void time0() interrupt 1

{

TH0=(65536-49900)/256;

TL0=(65536-50000)%256;

value++;

}