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学习单片机半个月了，学得也差不多了，今天写一个写程序练习练习哈哈
跟电子表的功能一模一样，可以进行设置，准确度非常高哈哈，用的是1602型号的液晶显示器，大家只需要简单的修改一下端口就能应用到你自己的设计上去了.
下面是源代码：
#include#define uchar unsigned char #define uint unsigned int uchar code year_table[]=" 2010-04-11 SUN"; uchar code time_table[]=" 00:00:00"; uchar time_count,key_count; char hour,minute,second,mouth,day,week; uint year; sbit rs=P3^5; sbit lcden=P3^4; sbit dula=P2^6; sbit wela=P2^7; sbit key_set=P3^0; sbit key_inc=P3^1; sbit key_dec=P3^2; sbit rd=P3^7; void delay(uint delay_time) { uint x,y; for(x=delay_time;x>0;x--) for(y=110;y>0;y--); } void write_com(uchar com) { rs=0; lcden=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; } void write_date(uchar date) { rs=1; lcden=0; P0=date; delay(5); lcden=1; delay(5); lcden=0; } void timer_Init() { TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } write_time(uchar addr,uchar time) { uchar shi,ge; shi=time/10; ge=time%10; write_com(0x80+0x40+addr); write_date(0x30+shi); write_date(0x30+ge); } write_day(uchar addr,uchar day) { uchar shi,ge; shi=day/10; ge=day%10; write_com(0x80+addr); write_date(0x30+shi); write_date(0x30+ge); } write_year(uchar addr,uint year) { uchar shi,ge,qian,bei; qian=year/1000; bei=year%1000/100; shi=year%100%100/10; ge=year%10; write_com(0x80+addr); write_date(0x30+qian); write_date(0x30+bei); write_date(0x30+shi); write_date(0x30+ge); } write_week(uchar addr,uchar week) { write_com(0x80+addr); switch(week) { case 1: write_date('M'); write_date('O'); write_date('N'); break; case 2: write_date('T'); write_date('U'); write_date('E'); break; case 3: write_date('W'); write_date('E'); write_date('D'); break; case 4: write_date('T'); write_date('H'); write_date('U'); break; case 5: write_date('F'); write_date('R'); write_date('I'); break; case 6: write_date('S'); write_date('A'); write_date('T'); break; case 7: write_date('S'); write_date('U'); write_date('N'); break; } } void Init() { uchar num; dula=0; wela=0; lcden=0; year=2010; mouth=4; day=11; week=7; write_com(0x38); write_com(0x0c); write_com(0x06); write_com(0x01); write_com(0x80); for(num=0;num<16;num++) { write_date(year_table[num]); delay(5); } write_com(0x80+0x40); for(num=0;num<12;num++) { write_date(time_table[num]); delay(5); } timer_Init(); } void keyscan() { rd=0; if(key_set==0) { delay(5); if(key_set==0) { key_count++; while(!key_set);//等待键盘释放 if(key_count==1) { TR0=0; write_com(0x80+0x40+10); write_com(0x0f); } if(key_count==2) { write_com(0x80+0x40+7); } if(key_count==3) { write_com(0x80+0x40+4); } if(key_count==4) { write_com(0x80+13); } if(key_count==5) { write_com(0x80+10); } if(key_count==6) { write_com(0x80+7); } if(key_count==7) { write_com(0x80+2); } if(key_count==8) { key_count=0; write_com(0x0c); TR0=1; } } } if(key_count!=0) { if(key_inc==0) { delay(5); if(key_inc==0) { while(!key_inc); if(key_count==1) { second++; if(second==60) { second=0; } write_time(10,second); write_com(0x80+0x40+10); } if(key_count==2) { minute++; if(minute==60) { minute=0; } write_time(7,minute); write_com(0x80+0x40+7); } if(key_count==3) { hour++; if(hour==24) { hour=0; } write_time(4,hour); write_com(0x80+0x40+4); } if(key_count==4) { week++; if(week==8) { week=1; } write_week(13,week); write_com(0x80+13); } if(key_count==5) { day++; if(day==32) { day=1; } write_day(10,day); write_com(0x80+10); } if(key_count==6) { mouth++; if(mouth==13) { mouth=1; } write_day(7,mouth); write_com(0x80+7); } if(key_count==7) { year++; write_year(2,year); write_com(0x80+2); } } } if(key_dec==0) { delay(5); if(key_dec==0) { while(!key_dec); if(key_count==1) { second--; if(second==-1) { second=59; } write_time(10,second); write_com(0x80+0x40+10); } if(key_count==2) { minute--; if(minute==-1) minute=59; write_time(7,minute); write_com(0x80+0x40+7); } if(key_count==3) { hour--; if(hour==-1) hour=23; write_time(4,hour); write_com(0x80+0x40+4); } if(key_count==4) { week--; if(week==0) { week=7; } write_week(13,week); write_com(0x80+13); } if(key_count==5) { day--; if(day==0) { day=31; } write_day(10,day); write_com(0x80+10); } if(key_count==6) { mouth--; if(mouth==0) { mouth=12; } write_day(7,mouth); write_com(0x80+7); } if(key_count==7) { year--; if(year==2009) { year=2010; } write_year(2,year); write_com(0x80+2); } } } } } void main() { Init(); while(1) { keyscan(); } } void clock_timer() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; time_count++; if(time_count==18) { time_count=0; second++; if(second==60) { second=0; minute++; if(minute==60) { minute=0; hour++; if(hour==24) { hour=0; } write_time(4,hour); } write_time(7,minute); } write_time(10,second); } }
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