dzb.zip_倒计时秒表

#include <reg51.h> #include <intrins.h> #define uchar unsigned char #define uint unsigned int #define DelayNOP() {_nop_();_nop_();_nop_();_nop_();} sbit K1 =P1^0; sbit K2 =P1^1; sbit K3 =P1^2; sbit K4 =P1^3; sbit SPK=P3^0; sbit RS =P2^0; sbit RW =P2^1; sbit E =P2^2; uchar HMS_Str1[] = " 2000.01.01 O "; uchar HMS_Str2[]= " 00:00:00 "; uchar code Str1[] = " Set New Time "; uchar code Str2[] = " Set Alarm "; uchar code Str3[] = " Miao Biao "; uchar MilliSecond,Hour =0,Minute=0, Second =0; uchar AHour =7,AMinute=0, MMinute=0, MSecond =0; uchar year=0,month=1,date=1;// 年、月、日 uchar Settime,miaob, Setdate=0; #define one 0x80 //LCD第一行的初始位置,因为LCD1602字符地址首位D7恒定为1 #define two 0x80+0x40 //LCD第二行初始位置（因为第二行第一个字符位置地址是0x40 bit AR=0,MB=0 ,MBk=0,shan=0 ,alarm=1; void DelayMS(uint x) { uchar i; while(x--) for(i=0;i<120;i++); } bit LCD_Busy_Check() { bit result; RS = 0;RW = 1;E = 1;DelayNOP();result = (bit)(P0 & 0x80);E = 0; return result; } void LCD_Write_Command(uchar cmd) { while(LCD_Busy_Check()); RS = 0;RW = 0;E = 0;_nop_();_nop_();P0 = cmd; DelayNOP(); E = 1;DelayNOP();E = 0; } void LCD_Write_Data(uchar dat) { while(LCD_Busy_Check()); RS = 1;RW = 0;E = 0; P0 = dat; DelayNOP(); E = 1;DelayNOP();E = 0; } void LCD_Initialize() { LCD_Write_Command(0x38);DelayMS(1); LCD_Write_Command(0x0c);DelayMS(1); LCD_Write_Command(0x06);DelayMS(1); LCD_Write_Command(0x01);DelayMS(1); } void Display_String(uchar*str,uchar LineNo) { uchar k; LCD_Write_Command(LineNo); for(k=0;k<16;k++) LCD_Write_Data(str[k]); } void Beep() { uchar i, j = 70; for(i=0;i<200;i++) { while(--j);SPK= ~SPK; } DelayMS(300); SPK=0; } void Display_HMS2() { if(Settime) HMS_Str2[3] = '>'; else HMS_Str2[3] = ' '; if(AR==1) { if(Settime==4 && shan==1) { HMS_Str2[4] = ' '; HMS_Str2[5] = ' '; } else { HMS_Str2[4] = AHour /10 + '0'; HMS_Str2[5] = AHour %10 + '0'; } if(Settime==5 && shan==1) { HMS_Str2[7] = ' '; HMS_Str2[8] = ' '; } else { HMS_Str2[7] = AMinute /10 + '0'; HMS_Str2[8] = AMinute %10 + '0'; } HMS_Str2[9]= ' '; HMS_Str2[10]= ' '; HMS_Str2[11]= ' '; } else if(MB==1) { HMS_Str2[4] = ' '; HMS_Str2[5] = ' '; HMS_Str2[6] = ' '; HMS_Str2[7] = MMinute /10 + '0'; HMS_Str2[8] = MMinute %10 + '0'; HMS_Str2[10]= MSecond/10 + '0'; HMS_Str2[11]= MSecond%10 + '0'; } else { if(Settime==1 && shan==1) { HMS_Str2[4] = ' '; HMS_Str2[5] = ' '; } else { HMS_Str2[4] = Hour /10 + '0'; HMS_Str2[5] = Hour %10 + '0'; } HMS_Str2[6] = ':'; if(Settime==2 && shan==1) { HMS_Str2[7] = ' '; HMS_Str2[8] = ' '; } else { HMS_Str2[7] = Minute /10 + '0'; HMS_Str2[8] = Minute %10 + '0'; } HMS_Str2[9]= ':'; if(Settime==3 && shan==1) { HMS_Str2[10] = ' '; HMS_Str2[11] = ' '; } else { HMS_Str2[10]= Second/10 + '0'; HMS_Str2[11]= Second%10 + '0'; } } Display_String(HMS_Str2, two); } void Display_HMS1() { if(Setdate) HMS_Str1[2] = '>'; else HMS_Str1[2] = ' '; if(AR==1) Display_String(Str2, one); else if(Settime) Display_String(Str1, one); else if(MB==1) Display_String(Str3, one); else { if(Setdate==1 && shan==1) { HMS_Str1[5] = ' '; HMS_Str1[6] = ' '; } else { HMS_Str1[5] = year/10+ '0'; HMS_Str1[6] = year %10 + '0'; } if(Setdate==2 && shan==1) { HMS_Str1[8] = ' '; HMS_Str1[9] = ' '; } else { HMS_Str1[8] = month /10 + '0'; HMS_Str1[9] = month %10 + '0'; } if(Setdate==3 && shan==1) { HMS_Str1[11] = ' '; HMS_Str1[12] = ' '; } else { HMS_Str1[11]= date /10 + '0'; HMS_Str1[12]= date %10 + '0'; } if(alarm==1) HMS_Str1[14] = 'O'; else HMS_Str1[14] = ' '; Display_String(HMS_Str1, one); } } //闰年的计算 bit leap_year() { bit leap; if(year%4==0&&year%100!=0||year%400==0)// 闰年的条件 leap=1; else leap=0; return leap; } void keyscan() { if(Setdate==0) if (K1==0) { DelayMS(5); if (K1==0) { while(!K1); Settime++; if(Settime==1) { TR0 = 0; TR1 = 1; Display_String(Str1,one); } if(Settime==4) { TR0 = 1; AR=1; Display_HMS2(); Display_String(Str2,one); } if(Settime>=6) { AR=0; TR1 = 0; Display_String(HMS_Str2, two); Settime=0; } } } if (Settime==0 && miaob ==0) if (K2==0) { DelayMS(5); if (K2==0) { while(!K2); Setdate++; TR1 = 1; if(Setdate>=4) { TR1 = 0; Display_String(HMS_Str2, two); Setdate=0; } } } } void Change_Time() { if (Settime) { if (K3==0) { DelayMS(5); if(K3==0) { while(!K3); switch (Settime) { case 1: Hour ++; if(Hour == 24) Hour = 0;break; case 2: Minute ++; if(Minute == 60) Minute = 0; break; case 3: Second ++; if(Second == 60) Second = 0; break; case 4: AHour ++; if(AHour == 24) AHour = 0; break; case 5: AMinute ++; if(AMinute == 60) AMinute = 0; break; } } } if (K4==0) { DelayMS(5); if(K4==0) { while(!K4); switch(Settime) { case 1: Hour --; if(Hour ==-1) Hour = 23; break; case 2: Minute --; if(Minute ==-1) Minute = 59; break; case 3: Second --; if(Second==-1) Second = 59; break; case 4: AHour--; if(AHour ==-1) AHour = 23; break; case 5: AMinute --; if(AMinute ==-1) AMinute = 59; break; } } } } if(Setdate) { if (K1==0) { DelayMS(5); if(K1==0) { while(!K1); alarm=~alarm; } } if (K3==0) { DelayMS(5); if(K3==0) { while(!K3); switch (Setdate) { case 1: year ++; if(year == 100) year = 0; break; case 2: month ++; if(month == 13) month = 1; break; case 3: date ++; if (month==1||month==3||month==5||month==7||month==8||month==10||month==12) if (date>31) date=1; //大月31 天 if (month==4||month==6||month==9||month==11) if (date>30) date=1; //小月30 天 if (month==2) if( leap_year()) //闰年的条件 if (date>29) date=1; //闰年2 月为29 天 else if (date>28) date=1; break; } } } if (K4==0) { DelayMS(5); if(K4==0) { while(!K4); switch(Setdate) { case 1: year --; if(year ==0) year =99; break; case 2: month --; if(month ==0) month =12; break; case 3: date --; if (month==1||month==3||month==5||month==7||month==8||month==10||month==12) if (date==0) date=31; //大月31 天 if (month==4||month==6||month==9||month==11) if (date==0) date=30; //小月30 天 if (month==2) if( leap_year()) //闰年的条件 if (date==0) date=29; //闰年2 月为29 天 else if (date==0) date=28; break; } } } } } void set_miaob() { if (Settime==0 && Setdate==0) { if (K3==0) {DelayMS(5); if(K3==0) { while(!K3); miaob++; if(miaob==1) { MB =1; Display_String(Str3,one); Display_HMS2(); } if(miaob==2) MBk=1; if(miaob==3) MBk=0; if(miaob==4) { MBk=0; MB =0; Display_String(HMS_Str2, two); Display_String(HMS_Str1, one); miaob=0; } } } } } void dingshi() { if(alarm) if (Hour == AHour && Minute == AMinute && Second == 0) Beep(); } void Timer0() interrupt 1 { TH0 = (65536 -50000)/256; TL0 = (65536 -50000)%256; if(++MilliSecond == 20) { MilliSecond = 0; Second++; if(Second > 59) {Second = 0; Minute++; if(Minute>59) {Minute=0; Hour++; if(Hour>23) {Hour=0; date++; if (month==1||month==3||month==5||month==7||month==8||month==10||month==12) if (date>31) {date=1;month++;} //大月31 天 if (month==4||month==6||month==9||month==11) if (