LCD1602简单的可调时钟

/*Copyright (C) 2011.04.29 Yuan Mingjin */ /*---------------------------------------*/ /*QQ:59715921 Email:nbasport2009@yahoo.cn*/ #include<reg52.h> #include"clock_lcd1602.c" sbit key1=P1^0; sbit key2=P1^1; sbit key3=P1^2; uchar code table[]={" QQ:591715921"}; uchar num,num1=1,flag; uchar h=11,m=58,s=10; void t0(void) interrupt 1 { num++; TH0=-50000>>8; TL0=-50000-(-50000>>8<<8); if(num==20) { num=0; s+=1; if(s==60) { s=0; m+=1; if(m==60) { m=0; h+=1; if(h==13) { h=1; num++; if(num/2==0) flag=1; else flag=0; } } } } } void it0_init(void) { TMOD|=0x01; ET0=1;EA=1;TR0=1; TH0=-50000>>8; TL0=-50000-(-50000>>8<<8); } void main(void) { uchar i; LCD_INIT(); LCD_XY(0,0); Print(table); it0_init(); while(1) { LCD_XY(0,1); Print("clock:"); LCD_WRITE(1,0x30+h/10); LCD_WRITE(1,0x30+h%10); Print(":"); LCD_WRITE(1,0x30+m/10); LCD_WRITE(1,0x30+m%10); Print(":"); LCD_WRITE(1,0x30+s/10); LCD_WRITE(1,0x30+s%10); if(flag==1) { Print("PM"); } else { Print("AM"); } if(key1==0){h++;if(h==13){h=0;}while(!key1);} if(key2==0){m++;if(m==59){m=0;h+=1;}while(!key2);} if(key3==0){s++;if(s==59){s=0;m+=1;}while(!key3);} } }