51单片机实现LCD1602显示定时计数器VIP专享VIP免费

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<>#defineucharunsignedchar#defineuintunsignedintsbitRS=P2^0;sbitRW=P2^1;sbitEN=P2^2;ucharcodedis2[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};ucharcodep[]="-";//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。。。ucharj,k,kk,miao,miao1,fen,fen1,shi,shi1;voiddelay_ms(intx)//延时程序，延时1ms{uinti;while(x--)for(i=0;i<120;i++);}ucharbusy()//对LCD1602进行判断是否为忙{ucharstatus;RS=0;RW=1;EN=1;delay_ms(1);status=P1;EN=0;returnstatus;}voidwrite_cmd(ucharcmd)//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;}voidwrite_data(uchardat){while((busy()&0x80)==0x80);RS=1;RW=0;EN=0;P1=dat;EN=1;delay_ms(1);EN=0;}voidcanshu(){write_cmd(0x38);delay_ms(1);write_cmd(0x01);delay_ms(1);write_cmd(0x06);delay_ms(1);write_cmd(0x0c);delay_ms(1);}/*voidxianshi(ucharx,uchary,uchar*str){uinti=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;}}*/voidaaa()interrupt1{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;}}voidmain(){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]);}}