基于嵌入式与单片机的电子时钟数码管显示仿真设计实现

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit duan = P1^6; //段选 sbit wei = P1^7; //位选 sbit S1 = P3^0; //开始修改参数键 sbit S2 = P3^6; //增加键 sbit S3 = P3^7; //减少键 uchar code aaa[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; uchar temp,out = 1,qq = 0,ww = 0,H,M,S,j1,j2,k1,k2,l1,l2; uchar H1 = 0,M1 = 0,Sa = 0,j10,j20,k10,k20,l10,l20,SS = 0; uint UT; //无按键按下开始计数标志 uint num=0; void TIM0_Init() { TMOD = 0x01; TH0 = (65536 - 50000)/256; //初值：2^16=65536 12M 50ms定时 TL0 = (65536 - 50000)%256; EA=1; ET0 = 1; //中断打开，打开外部中断0和定时器0中断 TR0=1; //打开定时器开关 } void TIM1_Init(void) { TMOD |= 0x10; TH1=(65536-50000)/256; TL1=(65536-50000)%256; EA=1; ET1=1; TR1=1; } void delayMS(x) //延时函数，单位毫秒 { uint a , b; for(a = 0 ; a < x ; a++ ) for(b = 0 ; b < 110 ; b++); } void play(uint h1 , uint h2 , uint m1 , uint m2 , uint s1 , uint s2) //时分秒的显示 { wei = 1; //时的十位 P2 = 0x7f; wei = 0; duan = 1; P0 = aaa[h1]; duan = 0; delayMS(3); wei = 1; //时的个位 P2 = 0xbf; wei = 0; duan = 1; P0 = aaa[h2]; duan = 0; delayMS(3); wei = 1; //分的十位 P2 = 0xdf; wei = 0; duan = 1; P0 = aaa[m1]; duan = 0; delayMS(3); wei = 1; //分的个位 P2 = 0xef; wei = 0; duan = 1; P0 = aaa[m2]; duan = 0; delayMS(3); wei = 1; //秒的十位 P2 = 0xf7; wei = 0; duan = 1; P0 = aaa[s1]; duan = 0; delayMS(3); wei = 1; //秒的个位 P2 = 0xfb; wei = 0; duan = 1; P0 = aaa[s2]; duan = 0; delayMS(3); } void stopfunc() //S1键函数开始修改参数 { if(S1 == 0) { while(!S1); qq++; out = 0; //暂停 TR0 = 0; TR1=1; num=0; } } void buttfunc() //S2键、S3键函数 调时 { if(qq == 1) //第一次按S1时，调秒 { if(S2 == 0) { while(!S2); if(S < 59) { S++; } else { S = 0; } delayMS(5); num==0; } if(S3 == 0) { while(!S3); if(S > 0) { S--; } else { S = 59; } delayMS(5); num==0; } j1=H%10; j2=H/10; k1=M%10; k2=M/10; l1=S%10; l2=S/10; play(j2,j1,k2,k1,l2,l1); } if(qq == 2) //第二次按S1时，调分 { if(S2 == 0) { while(!S2); if(M < 59) { M++; } else { M = 0; } num==0; delayMS(5); } if(S3 == 0) { while(!S3); if(M > 0) { M--; } else { M = 59; } num==0; delayMS(5); } j1=H%10; j2=H/10; k1=M%10; k2=M/10; l1=S%10; l2=S/10; play(j2,j1,k2,k1,l2,l1); } if(qq == 3) //第三次按S1时，调时 { if(S2 == 0) { while(!S2); if(H < 23) { H++; } else { H = 0; } num==0; delayMS(5); } if(S3 == 0) { while(!S3); if(H > 0) { H--; } else { H = 23; } num==0; delayMS(5); } j1=H%10; j2=H/10; k1=M%10; k2=M/10; l1=S%10; l2=S/10; play(j2,j1,k2,k1,l2,l1); } } void main() { TIM0_Init(); TIM1_Init(); while(1) { stopfunc(); if(out == 1) { TR0 = 1; TR1=0; if(UT == 20) //1秒钟到了----20*50=1000ms { UT = 0; S++; if(S == 60) { S=0; M++; if(M == 60) { M = 0; H++; if(H == 24) //24小时制 { H = 0; } } } } j1=H%10; j2=H/10; k1=M%10; k2=M/10; l1=S%10; l2=S/10; play(j2,j1,k2,k1,l2,l1); } else { buttfunc(); } } } void TIME() interrupt 1 { TH0 = (65536 - 50000)/256; //初值：2^16=65536 12M 50ms定时 TL0 = (65536 - 50000)%256; UT++; } void Timer1_isr(void) interrupt 3 using 1 { TH1 = (65536-50000)/256;//晶振12M 50ms 16bit 自动重载 TL1 = (65536-50000)%256; num++; if(num==60) { qq=0; out=1; num=0; } }