proteus电子仿真系统仿真数字钟

#include <reg51.h> sbit key1 = P1^0; bit flag1s = 0; bit KeySta = 1; unsigned char hour = 00; unsigned char minute = 00; unsigned char second = 00; unsigned char mode = 0; void FreshTime(); //刷新时间到显示缓冲区 void TimeInit(); //定时器初始化 void IntInit(); //外部中断初始化 void InitLedBuff(); //初始化时间到显示缓冲区 void keyscan(); //按键扫描及处理 unsigned char code LedChar[] = { //共阴数码管显示字符转换表 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40,0x00,0x40}; unsigned char LedBuff[8] = { //数码管显示缓冲区 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; void main() { TimeInit(); IntInit(); InitLedBuff(); while(1) //显示内容处理 { if(flag1s&&!mode) //时间显示模式 { flag1s = 0; FreshTime(); } else if(mode == 1) //校准分钟 { LedBuff[0] = 17; LedBuff[1] = 17; LedBuff[4] = 17; LedBuff[5] = 17; LedBuff[6] = 17;LedBuff[7] = 17;//不显示 LedBuff[2] = minute/10; LedBuff[3] = minute%10; } else if(mode == 2) //校准小时 { LedBuff[2] = 17; LedBuff[3] = 17; LedBuff[4] = 17; LedBuff[6] = 17; LedBuff[7] = 17; LedBuff[5] = 17;//不显示 LedBuff[0] = hour/10; LedBuff[1] = hour%10; } else if(mode == 3) //校准完成重新显示 { InitLedBuff(); mode = 0; } keyscan(); } } void InitLedBuff()//初始化时间到显示缓冲区 { LedBuff[0] = hour/10; LedBuff[1] = hour%10; LedBuff[2] = minute/10; LedBuff[3] = minute%10; LedBuff[4] = second/10; LedBuff[5] = second%10; LedBuff[6] = 18; LedBuff[7] = 18; } void FreshTime()//刷新时间到显示缓冲区 { second++; if(second == 60)//进位 { second = 0; minute++; if(minute == 60)//进位 { minute = 0; hour++; if(hour == 24) hour = 0; LedBuff[0] = hour/10; LedBuff[1] = hour%10; } LedBuff[2] = minute/10; LedBuff[3] = minute%10; } LedBuff[4] = second/10; LedBuff[5] = second%10; LedBuff[6] = 18; LedBuff[7] = 18; } void TimeInit()//定时器初始化 { TMOD = 0X11; //设置定时器为模式1 TL0 = 0xB0; TH0 = 0x3C; //定时初值 50ms TL1 = 0x18; // TH1 = 0xFC; //定时初值 1ms TR0 = 1; //定时器0开始计时 TR1 = 1; //定时器1开始计时 ET1 = 1; //使能定时器1 ET0 = 1; //使能定时器0 PT0 = 1; //提高计时准确性，提高定时器0中断优先级 EA = 1; //打开总中断 } void IntInit()//外部中断初始化 { IT0 = 1; //下降沿触发 EX0 = 1; //使能外部中断0 } void keyscan() //按键扫描及处理 { static bit backup = 1; if (KeySta != backup) //当前值与前次值不相等说明此时按键有动作 { if (backup == 0) //如果前次值为0，则说明当前是弹起动作 { if(mode == 1) //校准分钟时，分钟加一 { minute++; if(minute==60) minute = 0; } else if(mode == 2) //校准小时，小时加一 { hour++; if(hour==24) hour = 0; } } backup = KeySta; //更新备份为当前值，以备进行下次比较 } } void Int0() interrupt 0 //中断服务函数Int0()，用于处理外部中断0的中断事件（中断号为0） { mode++; if(mode == 4) { mode = 0; } } void Ledfresh() //数码管显示刷新 { static unsigned char i = 0; switch(i) { case 0 : P2 = ~(0x01<<0);P0 = LedChar[LedBuff[i]];i++;break; case 1 : P2 = ~(0x01<<1);P0 = LedChar[LedBuff[i]];i++;break; case 2 : P2 = ~(0x01<<3);P0 = LedChar[LedBuff[i]];i++;break; case 3 : P2 = ~(0x01<<4);P0 = LedChar[LedBuff[i]];i++;break; case 4 : P2 = ~(0x01<<6);P0 = LedChar[LedBuff[i]];i++;break; case 5 : P2 = ~(0x01<<7);P0 = LedChar[LedBuff[i]];i++;break; case 6 : P2 = ~(0x01<<2);P0 = LedChar[LedBuff[i]];i++;break; case 7 : P2 = ~(0x01<<5);P0 = LedChar[LedBuff[i]];i=0;break; } } void Time0() interrupt 1 //12MHz 50ms { static unsigned char n = 0; TL0 = 0xB0; TH0 = 0x3C; n++; if(n==20) { n=0; flag1s = 1;//1s标志位 } } void Time1() interrupt 3 //12MHz 1ms { static unsigned char keybuff = 0xff; TL1 = 0x18; // TH1 = 0xFC; //定时初值 1ms Ledfresh(); keybuff = (keybuff<<1)|key1; if (keybuff == 0x00) { //连续8次扫描值都为0，即16ms内都只检测到按下状态时，可认为按键已按下 KeySta = 0; } else if (keybuff == 0xFF) { //连续8次扫描值都为1，即16ms内都只检测到弹起状态时，可认为按键已弹起 KeySta = 1; } else {} //其它情况则说明按键状态尚未稳定，则不对KeySta变量值进行更新 }