基于STC89C51单片机的智能时钟Keil工程

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资源介绍:

通过数码管显示年、月、日、时、分、秒；同时可以通过按键修改时间。其中包含最简单的按键消抖、简单C语言语句的运用、数码管的动态显示、74HC573数字芯片的运用、51单片机定时器中断的使用；适合新手观看，主要提供一点思路。

#include #include #define u8 unsigned char #define u16 unsigned int sbit DU = P2 ^ 6; //数码管段选 sbit WE = P2 ^ 7; //数码管位选 sbit key1 = P3 ^ 0; //切换日历和时间。 sbit key2 = P3 ^ 1; //切换位用来准备调值。 sbit key3 = P3 ^ 2; //加数器。 sbit key4 = P3 ^ 3; //切换到秒表。 u8 year = 22, month, day, h, m, s; //时间计数变量。 u8 ms, ss, us; //秒表计数变量。 u16 count, count1; //计数变量。 u8 keyvalue0, keyvalue, keyvalue1; //切换模式，调节时分秒各个位置，开关秒表。 void delay(int i)//5us延时函数。 { while(i--) _nop_(); } void time0()//设置定时器0,8位自动重装模式，定时0.2ms { TMOD = 0x02; TH0 = 0x37; TL0 = 0x37; EA = 1; ET0 = 1; TR0 = 1; } u8 code SMGduan[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F}; //固定数值数组。 void display(u8 a, u8 b, u8 c) //数码管显示函数。 { if(keyvalue != 2 && keyvalue != 3) { DU = 0; P0 = SMGduan[a / 10]; DU = 1; DU = 0; WE = 0; P0 = 0xFE; WE = 1; delay(100); P0 = 0xFF; WE = 0; DU = 0; P0 = SMGduan[a % 10]; DU = 1; DU = 0; WE = 0; P0 = 0xFD; WE = 1; delay(100); P0 = 0xFF; WE = 0; } DU = 0; P0 = 0x40; DU = 1; DU = 0; WE = 0; P0 = 0xFB; WE = 1; delay(100); P0 = 0xFF; WE = 0; if(keyvalue != 1 && keyvalue != 3) { DU = 0; P0 = SMGduan[b / 10]; DU = 1; DU = 0; WE = 0; P0 = 0xF7; WE = 1; delay(100); P0 = 0xFF; WE = 0; DU = 0; P0 = SMGduan[b % 10]; DU = 1; DU = 0; WE = 0; P0 = 0xEF ; WE = 1; delay(100); P0 = 0xFF; WE = 0; } DU = 0; P0 = 0x40 ; DU = 1; DU = 0; WE = 0; P0 = 0xDF; WE = 1; delay(100); P0 = 0xFF; WE = 0; if(keyvalue != 1 && keyvalue != 2) { DU = 0; P0 = SMGduan[c / 10]; DU = 1; DU = 0; WE = 0; P0 = 0xBF; WE = 1; delay(100); P0 = 0xFF; WE = 0; DU = 0; P0 = SMGduan[c % 10]; DU = 1; DU = 0; WE = 0; P0 = 0x7F ; WE = 1; delay(100); P0 = 0xFF; WE = 0; } } void keyscan()//按键扫描。 { if(key1 == 0) { delay(4000); if(key1 == 0) { keyvalue0++; if(keyvalue0 == 2) keyvalue0 = 0; } while(!key1); } if(key2 == 0) { delay(4000); if(key2 == 0) { keyvalue++; if(keyvalue == 4) keyvalue = 0; } while(!key2); } if(key4 == 0) { delay(4000); if(key4 == 0) { keyvalue1++; if(keyvalue1 == 3) { keyvalue1 = 0; ms = 0; ss = 0; us = 0; } } while(!key4); } if(keyvalue0 == 1) { if(keyvalue == 1) { if(key3 == 0) { delay(4000); if(key3 == 0) { year++; if(year == 51) year = 22; while(!key3); } } } if(keyvalue == 2) { if(key3 == 0) { delay(4000); if(key3 == 0) { month++; if(month == 13) month = 1; while(!key3); } } } if(keyvalue == 3) { if(key3 == 0) { delay(4000); if(key3 == 0) { day++; if(day == 31) day = 1; while(!key3); } } } } else { if(keyvalue == 1) { if(key3 == 0) { delay(4000); if(key3 == 0) { h++; if(h == 24) h = 0; while(!key3); } } } if(keyvalue == 2) { if(key3 == 0) { delay(4000); if(key3 == 0) { m++; if(m == 60) m = 0; while(!key3); } } } if(keyvalue == 3) { if(key3 == 0) { delay(4000); if(key3 == 0) { s++; if(s == 60) s = 0; while(!key3); } } } } } void main() { time0(); while(1) { keyscan(); if(keyvalue1) { display(ms, ss, us); } else { if(keyvalue0) display(year, month, day); else display(h, m, s); } } } void time0h() interrupt 1//定时器0中断函数。 { count++; if(count == 46) { count = 0; count1++; if(keyvalue1 == 1) //进入秒表。 { us++; if(us == 100) { us = 0; ss++; if(ss == 60) { ss = 0; ms++; } } } if(count1 == 100) //正常时间累加。 { count1 = 0; s++; if(s == 60) { s = 0; m++; if(m == 60) { m = 0; h++; if(h == 24) { h = 0; day++; if(day == 30) { day = 0; month++; if(month == 12) { month = 0; year++; } } } } } } } }

资源文件列表:

智能时钟.zip 大约有17个文件

智能时钟/clock.c 6.88KB
智能时钟/debug.log 99B
智能时钟/Listings/
智能时钟/Listings/clock.lst 21.21KB
智能时钟/Listings/STARTUP.lst 13.83KB
智能时钟/Listings/智能时钟.m51 15.61KB
智能时钟/Objects/
智能时钟/Objects/clock.obj 11.03KB
智能时钟/Objects/STARTUP.obj 819B
智能时钟/Objects/智能时钟 10.2KB
智能时钟/Objects/智能时钟.build_log.htm 1023B
智能时钟/Objects/智能时钟.hex 2.61KB
智能时钟/Objects/智能时钟.lnp 108B
智能时钟/STARTUP.A51 6.23KB
智能时钟/智能时钟.uvgui.liang 89.44KB
智能时钟/智能时钟.uvopt 5.98KB
智能时钟/智能时钟.uvproj 14.27KB