基于51单片机的电子时钟

#include "reg52.h" #include "lcd.h" sbit set_but_s=P3^1; sbit set_but_m=P3^0; sbit set_but_h=P3^2; sbit set_but_Zero=P3^3; sbit led=P2^0; sbit beep_l=P1^0; unsigned int time_ms,time_s=6,time_m=6,time_h=6,time_ms_1; unsigned int set_time_ms,set_time_s,set_time_m,set_time_h,set,beepa; void lcd_display(); void delay_us(unsigned long us) //延时子程序 us { while(us--); } void Init() //中断初始化 { TMOD=0X11; TH0=0XEE; //5ms中断一次 TL0=0X00; TH1=0XEE; //5ms中断一次 TL1=0X00; EA=1;//全开 =0关中断 ET0=1; TR0=1; ET1=1; TR1=1; } void time_s_m_h() //时分秒计算 { if(time_s>=60) //秒 { time_s=0; time_m=time_m+1; } else if(time_m>=60) //分 { time_m=0; time_h=time_h+1; } else if(time_h>=24) //时 { time_h=0; } } void set_time() //设置时间子程序 { if(set==1) { if(set_but_s==0) //设置秒 { delay_us(2); if(set_but_s==0) { time_s=time_s+1; if(time_s>=60) { time_s=0; } while(set_but_s==0) { lcd_display(); if(time_ms>=200) { break; } } } } else if(set_but_m==0) //设置分 { delay_us(2); if(set_but_m==0) { time_m=time_m+1; if(time_m>=60) { time_m=0; } while(set_but_m==0) { lcd_display(); if(time_ms>=200) { break; } } } } else if(set_but_h==0) //设置时 { delay_us(2); if(set_but_h==0) { time_h=time_h+1; if(time_h>=24) { time_h=0; } while(set_but_h==0) { lcd_display(); if(time_ms>=200) { break; } } } } } else if(set==2) { if(set_but_s==0) //设置秒 { delay_us(2); if(set_but_s==0) { set_time_s=set_time_s+1; if(set_time_s>=60) { set_time_s=0; } while(set_but_s==0) { lcd_display(); if(time_ms>=200) { break; } } } } else if(set_but_m==0) //设置分 { delay_us(2); if(set_but_m==0) { set_time_m=set_time_m+1; if(set_time_m>=60) { set_time_m=0; } while(set_but_m==0) { lcd_display(); if(time_ms>=200) { break; } } } } else if(set_but_h==0) //设置时 { delay_us(2); if(set_but_h==0) { set_time_h=set_time_h+1; if(set_time_h>=24) { set_time_h=0; } while(set_but_h==0) { lcd_display(); if(time_ms>=200) { break; } } } } } } void lcd_display() //时间显示 { LCD_Write_Char(0,0,set%10+'0'); LCD_Write_String(1,0,"--:"); LCD_Write_Char(4,0,time_h/10+'0'); LCD_Write_Char(5,0,time_h%10+'0'); LCD_Write_String(6,0,":"); LCD_Write_Char(7,0,time_m/10+'0'); LCD_Write_Char(8,0,time_m%10+'0'); LCD_Write_String(9,0,":"); LCD_Write_Char(10,0,time_s/10+'0'); LCD_Write_Char(11,0,time_s%10+'0'); LCD_Write_String(0,1,"set:"); LCD_Write_Char(4,1,set_time_h/10+'0'); LCD_Write_Char(5,1,set_time_h%10+'0'); LCD_Write_String(6,1,":"); LCD_Write_Char(7,1,set_time_m/10+'0'); LCD_Write_Char(8,1,set_time_m%10+'0'); LCD_Write_String(9,1,":"); LCD_Write_Char(10,1,set_time_s/10+'0'); LCD_Write_Char(11,1,set_time_s%10+'0'); } void beep_led() { if(set_time_s==time_s&&set_time_m==time_m&&set_time_h==time_h) { beepa=1; led=0; beep_l=1; } else if(beepa==1) { beep_l=1; if(time_ms<=100) { led=0; } else if(time_ms>=100&&time_ms<=200) { led=1; } } else if(beepa==0) { beep_l=0; led=1; } } void qingling() { if(set_but_Zero==0) { delay_us(10); if(set_but_Zero==0) { if(time_ms_1>=100) { set=set+1; time_ms_1=0; if(set>=3) { set=0; } } if(time_ms_1<=100&&beepa==1) { beepa=0; set_time_s=set_time_m=set_time_h=0; } } } else if (set==0||set==2) { TR1=1; } else if (set==1) { TR1=0; } } void main() { LCD_Init(); //显示器初始化 LCD_Clear();//清屏 Init(); while(1) { lcd_display(); set_time(); beep_led(); qingling(); } } void Time_Delay1_1ms() interrupt 1 //定时器 50ms { TH0=0XEE; //5ms中断一次 TL0=0X00; if(set_but_Zero==0) { time_ms_1++; } else if(set_but_Zero==1) { time_ms_1=0; } else if(beepa==1) { beep_l=~beep_l; } } void Time_Delay_5ms() interrupt 3 //定时器 50ms { TH1=0XEE; //5ms中断一次 TL1=0X00; time_ms++; //5ms累计一次 if(time_ms>=200) { time_ms=0; time_s=time_s+1; time_s_m_h(); } }