CODE: /*************************************** 程序功能： 液晶显示屏显示时钟并且可以修改时间 ***************************************/ #include<reg52.h> #define uint unsigned int #define uchar unsigned char sbit K1=P1^0;//设置三个独立 sbit K2=P1^3; sbit K3=P1^5; sbit lcdwrite=P2^5; sbit lcddatecommand=P2^6; sbit lcde=P2^7; uchar code firstline[]="2013-06-03"; uchar code secondline[]="00-00-00"; uchar i; uchar hour,minutes,seconds; uchar count,num; uchar cnt; void delay(uint z) { uint x,y; for(x=z;x>0;x--) { for(y=0;y<=112;y++) { } } } void write_command(uchar command) { lcddatecommand=0; lcdwrite=0; P0=command; delay(1); lcde=1; delay(1); lcde=0; } void write_date(uchar date) { lcddatecommand=1; lcdwrite=0; P0=date; delay(1); lcde=1; delay(1); lcde=0; } void LCDinit() { lcde=0; write_command(0x38);//设置16*2显示，5*7点阵，8位数据 write_command(0x0f);//设置开显示，不显示光标 write_command(0x06);// 写一个字符后地址指针加1 write_command(0x80); for(i=0;i<10;i++) { write_date(firstline[i]); delay(1); } write_command(0x80+0x40); for(i=0;i<8;i++) { write_date(secondline[i]); delay(1); } } void Time0init() { TMOD=0x01;//开启定时器1 TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; } void Clockinit() { hour=0; minutes=0; seconds=0; count=0; num=0; } void display(uchar hour,uchar minutes,uchar seconds)//接收并发送数据到液晶屏幕 { uchar hourge,hourshi,minutesshi,minutesge,secondsshi,secondsge; hourshi=hour/10; hourge=hour%10; write_command(0x80+0x40); write_date(hourshi+48); delay(1); write_date(hourge+48); delay(1);
minutesshi=minutes/10; minutesge=minutes%10; write_command(0x80+0x43); write_date(minutesshi+48); delay(1); write_date(minutesge+48); delay(1);
secondsshi=seconds/10; secondsge=seconds%10; write_command(0x80+0x46); write_date(secondsshi+48); delay(1); write_date(secondsge+48); delay(1); } void revise() { if(K1==0) { delay(5); if(K1==0) { cnt++;//计数第几次按下 TR0=0; } while(!K1); delay(5); while(!K1); } if(cnt==1)//第一次按下，调整秒钟,调整时秒钟有光标闪烁 { write_command(0x80+0x46); write_command(0x0f); if(K2==0) { delay(5); if(K2==0) { seconds++; if(seconds==60) { seconds=0; } } while(!K2); delay(5); while(!K2); } if(K3==0) { delay(5); if(K3==0) { seconds--; if(seconds==-1)//here is a bug { seconds=59; } } while(!K3); delay(5); while(!K3); } }
if(cnt==2)//第二次按下，调整分钟,调整时秒钟有光标闪烁 { write_command(0x80+0x43); write_command(0x0f); if(K2==0) { delay(5); if(K2==0) { minutes++; if(minutes==60) { minutes=0; } } while(!K2); delay(5); while(!K2); } if(K3==0) { delay(5); if(K3==0) { minutes--; if(minutes==-1)//here is a bug { minutes=59; } } while(!K3); delay(5); while(!K3); } } if(cnt==3)//第三次按下，调整时钟,调整时秒钟有光标闪烁 { write_command(0x80+0x40); write_command(0x0f); if(K2==0) { delay(5); if(K2==0) { hour++; if(hour==24) { hour=0; } } while(!K2); delay(5); while(!K2); } if(K3==0) { delay(5); if(K3==0) { hour--; if(hour==-1)//here is a bug { hour=23; } } while(!K3); delay(5); while(!K3); } } if(cnt==4) { TR0=1; cnt=0; } } void main() { LCDinit(); Time0init(); Clockinit(); while(1) { revise(); display(hour,minutes,seconds); } } void Time0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; count++; if(count==20) { count=0; seconds++; if(seconds==60) { seconds=0; minutes++; if(minutes==60) { minutes=0; hour++; if(hour==24) { hour=0; } } } } }
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