2,可以用做报警器(按P3.2时,用做报警)
3,可以用做闹钟(按P1.6时,用做闹钟)
4,可以显示星期
程序如下:
#include <AT89X51.H>#define uchar unsigned char#define uint unsigned int uchar code dispcode[]={0x81,0x9f,0xa4,0x8c,0x9a,0xc8,0xc0,0x9d,0x80,0x88};uchar code DATA[]={0xfc,0x92,0x98,0xac,0x89,0x01,0x5c,0x80,0x88};uchar dispbitcode[]={0xfe,0xfd,0xfb,0xf7};uchar dispbuf[8]={0,0,0,0}; uchar dispbitcnt; uchar second,minite,hour,day; uchar clockhour,clockminite;uint tcnt; uchar mstcnt; uchar t; uint a;//上面的是定义各个变量和数码管缓存void yanshi(uint t){for(;t>0;t--);}//延时子程序void beep(){while(hour<clockhour){for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<5000;a++){yanshi(6);P1_4=~P1_4;}if(P3_6==0){break;}}while(minite<clockminite){for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<5000;a++){yanshi(6);P1_4=~P1_4;}if(P3_6==0){break;}}}//报警子程序(P1.4接的是BEEP,P3.6为O时跳出)void baojing(){if(P1_7==0){yanshi(500);if(P1_7==0){while(1){if(P1_7==1){while(1){beep();if(P3_6==0){break;}}}if(P3_6==0){break;}}}}}//报警执行子程序(用P1.7做信号检测脚,同样当P3.6为0时跳出)void clock(){if(P3_3==0){yanshi(500); if(P3_3==0){clockminite++;if(clockminite==60){clockminite=0;} dispbuf[3]=clockminite%10; dispbuf[2]=clockminite/10; while(P3_3==0);}} if(P3_6==0){yanshi(500); if(P3_6==0){clockhour++; if(clockhour==24){clockhour=0;} dispbuf[1]=clockhour%10; dispbuf[0]=clockhour/10; while(P3_6==0);}}}//设定闹钟子程序void key(){if(P3_6==0){yanshi(500); if(P3_6==0){second++;if(second==60){second=0;} while(P3_6==0);}} if(P3_5==0){yanshi(1000); if(P3_5==0){minite++; if(minite==60){minite=0;} dispbuf[3]=minite%10; dispbuf[2]=minite/10; while(P3_5==0);}} if(P3_7==0){yanshi(500); if(P3_7==0){hour++; if(hour==24){hour=0;} dispbuf[1]=hour%10; dispbuf[0]=hour/10; while(P3_7==0);}}if(P3_4==0){yanshi(500); if(P3_4==0){day++; if(day==7){day=0; }P2=DATA[day]; while(P3_4==0);}}}//设定时间子程序void laozhong(){if(hour==clockhour){if(minite==clockminite){for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<1000;a++){yanshi(5);P1_4=~P1_4;}for(a=0;a<5000;a++){yanshi(6);P1_4=~P1_4;}}}}//闹钟子程序void display(){dispbuf[3]=minite%10; dispbuf[2]=minite/10; dispbuf[1]=hour%10; dispbuf[0]=hour/10;P2=DATA[day];}//显示子程序void displayclock(){dispbuf[7]=clockminite%10; dispbuf[6]=clockminite/10; dispbuf[5]=clockhour%10; dispbuf[4]=clockhour/10;}//闹钟显示子程序void time(){tcnt++; if(tcnt==4000){tcnt=0;second++;if(second==60){second=0; minite++;if(minite==60){minite=0; hour++;if(hour==24){hour=0;day++;if(day==7){day=0;}}}}display();}}//时间子程序void t0(void) interrupt 1 using 0 {mstcnt++; if(mstcnt==4){mstcnt=0; P0=dispcode[dispbuf[dispbitcnt]]; P1=dispbitcode[dispbitcnt]; P2=DATA[day];dispbitcnt++;}if(dispbitcnt==4){dispbitcnt=0;}time();displayclock();}//中断void main(void) { TMOD=0x02; TH0=0x06; TL0=0x06; TR0=1; ET0=1; EA=1;while(1){key();clock();if(P1_6==0){while(1){laozhong();if(P3_6==0){break;}}}if(P3_2==0){yanshi(10000);if(P3_2==0){while(1){baojing();if(P3_6==0){break;}}}}}}//S1：启动报警器(P3.2)//S2: clock minite 加(P3.3)//S3: 星期加(P3.4)//S4：time minite 加(P3.5)//S5: clock hour 加/退出报警器(P3.6)//S6：time hour 加(P3.7)//P1-7为信号检测脚