任意调整时间的单片机程序，分2次显示，一次时和秒，一次分钟和秒 -

标题: 任意调整时间的单片机程序，分2次显示，一次时和秒，一次分钟和秒 [打印本页]

作者: 对面的女孩看过 时间: 2017-11-27 21:05
标题: 任意调整时间的单片机程序，分2次显示，一次时和秒，一次分钟和秒
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code tab[]=
{
0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,
0x80,0x90};
unsigned char cnt = 0;
unsigned char cnt0 = 0;
unsigned char sec0 = 0;
unsigned char sec1 = 0;
unsigned char sec2 = 0;

bit flag=0;
bit flag0=0;
bit flag1=0;
bit flag1s=0;

sbit key0=P3^2;
sbit key1=P3^3;
sbit key2=P3^4;
sbit key3=P3^5;

void delay(uint ms)
{
  while(ms--);
}

void main()
{
sec2=23;
sec1=59;
sec0=55;

  EX0=1;             //外部中断0
IT0=1;
      EX1=1;             //外部中断1
      IT1=1;
      EA = 1;
      TMOD = 0x01;
TH0=(65536-50000)/256;
TL0=(655356-50000)%256;
ET0=1;
      TR0=1;
      while(1)
      {

            P2 = 0x80;P0 = tab[sec0%10];delay(10);P0 = 0xff;
            P2 = 0x40;P0 = tab[sec0/10];delay(10);P0 = 0xff;

         if(flag1s==0)
               {
                  P2 = 0x20;P0 = tab[sec1%10];delay(10);P0 = 0xff;
                  P2 = 0x10;P0 = tab[sec1/10];delay(10);P0 = 0xff;
                        P2 = 0x20; P0 =0x7f;    delay(10);P0=0xff;
               }

   else
               {
                  P2 = 0x20;P0 = tab[sec2%10];delay(10);P0 = 0xff;
                     P2 = 0x10;P0 = tab[sec2/10];delay(10);P0 = 0xff;
               }

         if((key2==0)&&(flag0==0))
            flag0=1;
               if((key2==1)&&(flag0==1))
         {
            flag=0;
                        flag1s=0;
                  flag0=0;
               sec1++;

               if(sec1==60)
                  {
                  sec1 = 0;
               sec2++;
                  }
         }
      if((key3==0)&&(flag1==0))
               flag1=1;
               if((key3==1)&&(flag1==1))
         {
                     flag=0;
                     flag1s=1;
               flag1=0;
               sec2++;
               if(sec2==24)
                  sec2 =0;
                  }
      }
      }

void t0(void) interrupt 1 using 3
{
   TH0 = (65536-50000)/256;
      TL0 = (65536-50000)%256;
   cnt++;
if (cnt >= 20)
{
         if(flag==1)
      {
      cnt = 0;
               cnt0++;
               if(cnt0==5)
               {
               flag1s=~flag1s;
               cnt0=0;
               }
               sec0++;
               if(sec0==60)
               {
                  sec0=0;
                     sec1++;
                     if(sec1==60)
                     {
                        sec1=0;
                        sec2++;
                        if(sec2==24)
                        {
                           sec2=0;
                        }
                     }
               }
               }
}
      }

void int0_()interrupt 0 using 1
{
  if(key0==0)

      flag=1;

}
void int1_()interrupt 2 using 2
{
if(key1==0)
{
      flag=0;
      sec0++;
         if(sec0==60)
         {
         sec0 = 0;
         sec1++;
         }
      }
         }

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