51单片机实现LCD1602显示定时计数器(自己整理的)

每隔一分钟，蜂鸣器响一次，按键按一下，计数器清0。从新开始、

#include<>

#include<>

#define uchar unsigned char

#define uint unsigned int

sbit RS=P2^0;

sbit RW=P2^1;

sbit EN=P2^2;

uchar code dis2[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};

uchar code p[]="-";//code 可以不加，加了之后就是固定了这个数组不能对其进行操作、、这个一定要注意。。。uchar j,k,kk,miao,miao1,fen,fen1,shi,shi1;

void delay_ms(int x)//延时程序，延时1ms

{

uint i;

while(x--)

for(i=0;i<120;i++);

}

uchar busy()//对LCD1602进行判断是否为忙

{

uchar status;

RS=0;

RW=1;

EN=1;

delay_ms(1);

status=P1;

EN=0;

return status;

}

void write_cmd(uchar cmd)//写命令程序，首先对其进行判忙

{

while((busy()&0x80)==0x80);//对返回进行判断，如果为忙就进行等待RS=0;

RW=0;

EN=0;

P1=cmd;

EN=1;

delay_ms(1);

EN=0;

}

void write_data(uchar dat)

{

while((busy()&0x80)==0x80);

RS=1;

RW=0;

EN=0;

P1=dat;

EN=1;

delay_ms(1);

EN=0;

}

void canshu()

{

write_cmd(0x38);

delay_ms(1);

write_cmd(0x01);

delay_ms(1);

write_cmd(0x06);

delay_ms(1);

write_cmd(0x0c);

delay_ms(1);

}

/*void xianshi(uchar x,uchar y,uchar *str)

{

uint i=0;

if(y==0)

write_cmd(0x80|x);

if(y==1)

write_cmd(0xc0|x);

for(i=0;i<16;i++)

{

write_data(str[i]);

if(p=='\0')

break;

}

} */

void aaa() interrupt 1

{

TH0=(65535-50000)/256;

TL0=(65535-50000)%256;

if(++kk==18)

{

miao++;

if(miao==10)

{

if(miao1++==5)

{

if(fen++==10)

{

if(fen1++==5)

{

if(shi++==10)

{

if(shi1++==1)

{

shi1=0;

shi=0;

}

shi=0;

}

fen1=0;

}

fen=0;

}

miao1=0;

}

miao=0;

}

kk=0;

}

}

void main()

{

canshu();

//xianshi(0,0,p);

//xianshi(0,1,p+16);

EA=1;

ET0=1;

TMOD=0x01;

TH0=(65535-50000)/256;//如果不准可对其进行修改，比如4000可能更准确TL0=(65535-50000)%256;

TR0=1;

while(1)

{

write_cmd(0x80|1);

write_data(dis2[shi]);

write_cmd(0x80|2);

write_data(dis2[shi1]);

write_cmd(0x80|3);

write_data(p[0]);

write_cmd(0x80|4);

write_data(dis2[fen1]);

write_cmd(0x80|5);

write_data(dis2[fen]);

write_cmd(0x80|6);

write_data(p[0]);

write_cmd(0x80|7);

write_data(dis2[miao]);

write_cmd(0x80|8);

write_data(dis2[miao1]);

}

}