海翔單片機開發板數碼管倒計時程序

ID:454219 · 發表于 2019-1-26 00:22

//海翔開發板數碼管倒計時
//作者：yxf7499
//初次練手，做的不好，請多擔待。

//原理圖如下

#include <reg52.h>

unsigned char code  seg[]={0,1,2,3,4,5,6,7};//分別對應相應的數碼管點亮,即位碼
unsigned char code duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned long DuanBuff[9]={9,9,9,9,9,9,9,9,9};
unsigned long sec=3600;
unsigned int cnt;

void InitTimer0(void)
{
TMOD = 0x01;
TH0 = 0x0FC;
TL0 = 0x18;
EA = 1;
ET0 = 1;
TR0 = 1;
}

void Timer0Interrupt(void) interrupt 1
{
TH0 = 0x0FC;
TL0 = 0x18;
cnt++;

      if(cnt>1000)
      {
               cnt=0;
               sec--;
      }
}

void delay(unsigned int i)
{
      unsigned int m,n;
      for(m=i;m>0;m--)
            for(n=110;n>0;n--);
}

void main()
{
      InitTimer0();
      while(1)
      {
            DuanBuff[7]=sec%10;
            DuanBuff[6]=sec/10%10;
            DuanBuff[5]=sec/100%10;
            DuanBuff[4]=sec/1000%10;
            DuanBuff[3]=sec/10000%10;
            DuanBuff[2]=sec/100000%10;
            DuanBuff[1]=sec/1000000%10;
            DuanBuff[0]=sec/10000000%10;

            P2=seg[0];
            P0=duan[DuanBuff[0]];
            delay(1);

            P2=seg[1];
            P0=duan[DuanBuff[1]];
            delay(1);

            P2=seg[2];
            P0=duan[DuanBuff[2]];
            delay(1);

            P2=seg[3];
            P0=duan[DuanBuff[3]];
            delay(1);

            P2=seg[4];
            P0=duan[DuanBuff[4]];
            delay(1);

            P2=seg[5];
            P0=duan[DuanBuff[5]];
            delay(1);

            P2=seg[6];
            P0=duan[DuanBuff[6]];
            delay(1);

            P2=seg[7];
            P0=duan[DuanBuff[7]];
            delay(1);
      }
}

ID:452173 · 發表于 2019-2-3 15:42

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海翔單片機開發板數碼管倒計時程序

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