可实现功能：
启动程序数码管按照××-××-××格式显示时分秒并走时
按下C1按钮后按照××-××-××格式显示年月日
按下C3调时模式按钮时分秒/年月日静止，指示灯亮起，进入调时模式
先按C2选位按钮再按下C0加一按钮，对应的位置改变
再次按下C3按钮退出调时模式，继续走时
#include<reg51.h>#define uChar unsigned char#define uInt unsigned int
uChar a []={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; uChar b []={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; uChar second=00,minute=00,hour=10,year=17,month=01,day=11,count;
sbit Key1 = P3^7; //计时停止sbit Key2 = P3^6; //调位sbit Key3 = P3^0; //加一 sbit Key4 = P3^2; //切换sbit LED1 = P1^7;
void Delayms(uInt t){ uInt i,j; for(i=0;i<t;i++) for(j=0;j<125;j++) ;}
void Dispaly1(uChar second,uChar minute,uChar hour){
P2=b[0]; P0=a[hour/10]; Delayms(5);
P2=b[1]; P0=a[hour]; Delayms(5);
P2=b[2]; P0=0x40; Delayms(5);
P2=b[3]; P0=a[minute/10]; Delayms(5);
P2=b[4]; P0=a[minute]; Delayms(5);
P2=b[5]; P0=0x40; Delayms(5);
P2=b[6]; P0=a[second/10]; Delayms(5);
P2=b[7]; P0=a[second]; Delayms(5);
}
void Dispaly2(uChar day,uChar month,uChar year){
P2=b[0]; P0=a[day/10]; Delayms(5);
P2=b[1]; P0=a[day]; Delayms(5);
P2=b[2]; P0=0x40; Delayms(5);
P2=b[3]; P0=a[month/10]; Delayms(5);
P2=b[4]; P0=a[month]; Delayms(5);
P2=b[5]; P0=0x40; Delayms(5);
P2=b[6]; P0=a[year/10]; Delayms(5);
P2=b[7]; P0=a[year]; Delayms(5);
}
void Keyscan1(){ static uChar i=0,j=0; if(Key1==0) { Delayms(10); //消抖 if(Key1==0) while(!Key1); //等待按键弹起 i++; } if(i%2==1) { LED1=0; TR0=0; } if(i%2==0) { LED1=1; TR0=1; } if(Key2==0) { Delayms(10); if(Key2==0) while(!Key2); j++; } if(j%4==1) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); second++; if(second==60) second=0; } } if(j%4==2) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); minute++; if(minute==60) minute=0; } } if(j%4==3) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); hour++; if(hour==24) hour=0; } }}
void Keyscan2(){ static uChar m=0,n=0; if(Key1==0) { Delayms(10); if(Key1==0) while(!Key3); m++; } if(m%2==1) { LED1=0; TR0=0; } if(m%2==0) { LED1=1; TR0=1; } if(Key2==0) { Delayms(10); if(Key2==0) while(!Key2); n++; } if(n%4==1) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); day++; if(day==30) day=0; } } if(n%4==2) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); month++; if(month==12) month=0; } } if(n%4==3) { if(Key3==0) { Delayms(10); if(Key3==0) while(!Key3); year++; if(year==99) year=0; } }}
void main(){ TMOD=0x01; TH0=(65536-10000)/256; TL0=(65536-10000)%6; EA=1; ET0=1; TR0=1; while(1) { static uChar h=0; if(Key4==0) { Delayms(10); if(Key4==0) while(!Key4); h++; } if(h%2==1) { Dispaly2(year,month,day); Keyscan2(); } if(h%2==0) { Dispaly1(second,minute,hour); Keyscan1(); } }}
void time0_int(void) interrupt 1{ TH0=(65536-10000)/256; TL0=(65536-10000)%6; count++; if(count==100) { count=0; second++; if(second==60) { second=0; minute++; if(minute==60) { minute=0; hour++; if(hour==24) { hour=0; day++; if(day==30) { day=0; month++; if(month==12) { month=0; year++; if(year==99) { year=0; } } } } } } }}
转载于:https://www.cnblogs.com/LXSYD-C/p/6364888.html
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