原创 LED电子钟

https://static.assets-stash.eet-china.com/album/old-resources/2008/10/28/56e84065-f6a5-49d2-8f24-3032c3b05b6a.rarLED电子钟

/*--------------------------------------------------------------*/
//包含头文件
#include <AT89X52.H>
#include "74HC595.H"

/*--------------------------------------------------------------*/
//键盘接口定义
sbit k1 = P1^0;
sbit k2 = P1^1;
sbit k3 = P1^2;
sbit k4 = P1^3;
sbit BP = P1^4;

/*--------------------------------------------------------------*/
//定义相关变量
unsigned char count;  //50ms计数
unsigned char second;  //1s计数
unsigned char minute;  //1m计数
unsigned char hour;   //1h计数
unsigned char time[8];  //时分秒拆位
unsigned char alarm_minute; //闹铃分钟
unsigned char alarm_hour; //闹铃小时
bit  flag;     //切换闹铃时间(1)和正常走时时间(0)

/*--------------------------------------------------------------*/
//函数定义
void delay(unsigned char x, unsigned char y, unsigned char z)
{
    unsigned char tempx,tempy,tempz=z;
    do{tempy=y;do{tempx=x;while(--tempx);}while(--tempy);}while(--tempz);
}

/*--------------------------------------------------------------*/
//定时器初始化
void Timer_init(void)                    
{
    TMOD = 0x11;
    TH0  = 0x3c;           //50ms
    TL0  = 0xb7;

    TH1  = 0xec;           //5ms
    TL1  = 0x7e;

    IE   = 0x8a;     //EA = 1; ET0 = 1; ET1 = 1;
 IP   = 0x02;     //PT0 = 1; 
    TCON = 0x50;        //TR0 = 1; TR1 = 1;
}

/*--------------------------------------------------------------*/
//按键处理程序
void Key_pro(void)
{
 if(k1 == 0)
 { 
  delay(1, 3, 227);    //5ms 
  if(k1 == 0)  second = 0;  while(k1 == 0);
 }

 if(k2 == 0)
 { 
  delay(1, 3, 227);    //5ms 
  if(k2 == 0)  
  {
   if(flag) {alarm_minute++; if(alarm_minute == 60) alarm_minute = 0;  while(k2 == 0);}
   else  {minute++;   if(minute == 60) minute = 0;  while(k2 == 0);}
  }
 }

 if(k3 == 0)
 { 
  delay(1, 3, 227);  //5000+1 us 
  if(k3 == 0)  
  {
   if(flag) {alarm_hour++;  if(alarm_hour == 24) alarm_hour = 0;  while(k3 == 0);}
   else  {hour++; if(hour == 24)  hour = 0;  while(k3 == 0);}
  }
 }
}

/*--------------------------------------------------------------*/
//闹铃检测以及设置
void Alarm_detect(void)
{
 unsigned char i;
 if(k4 == 0)  {delay(1, 3, 227);    if(k4 == 0) flag = ~flag; while(k4 == 0);}
 while(alarm_hour == hour && alarm_minute == minute)
 {
  for(i = 4; i != 0; i--)
  {
   BP = ~BP;
   P0 = ~P0;
   delay(7, 225, 74);  //300ms
  }
  if(k4 == 0)  break ;
  delay(14, 187, 167); //1000ms
 }
}
  

/*--------------------------------------------------------------*/
//T0定时器中断服务
void T0_intservice(void) interrupt 1  
{
    TH0  = 0x3c; //50ms
    TL0  = 0xb7;
 count++;
 if(count == 20)
 {
  count = 0;
  second++;
  if(second == 60)
  {
   second = 0;
   minute++;
   if(minute == 60)
   {
    minute = 0;
    hour++;
    if(hour == 24) hour = 0;
   }
  }

  if(flag)
  {
   time[0] = 10;
   time[1] = 10;
   time[3] = alarm_minute%10;
   time[4] = alarm_minute/10;
   time[6] =   alarm_hour%10;
   time[7] =   alarm_hour/10;
  }
  else
  {
   time[0] = second%10;
   time[1] = second/10;
   time[3] = minute%10;
   time[4] = minute/10;
   time[6] =   hour%10;
   time[7] =   hour/10;
  }
 }
}

/*--------------------------------------------------------------*/
//T1定时器中断服务
void T1_intservice(void) interrupt 3  
{
 unsigned char i;
    TH1 = 0xec;   //5ms
    TL1 = 0x7e;
 for(i = 0; i <8 ; i++)
 {
  Ser_IN( pos );   //片选
  Ser_IN( seg[ time ] ); //段码    
  Par_OUT();
  if(i == 2 || i == 5) time = 10; //显示"-"
  Ser_IN(0x00);   //片选
  Ser_IN(0xff);   //段码    
  Par_OUT();
 }
 if(k4 == 0)  {BP = 1; P0 = 0xff;}  
}