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  • 定时器0的方式1 定时器1的方式1 数码管和led

    版权声明:本文为博主原创文章。未经博主同意不得转载。 https://blog.csdn.net/u011046042/article/details/37881715
    #include<reg52.h>
    #define uchar unsigned char
    #define uint unsigned int
    sbit dula=P2^6;
    sbit wela=P2^7;
    sbit led1=P1^0;
    uchar code table[]=
    {
    0x3f,0x06,0x5b,0x4f,0x66,
      0x6d,0x7d,0x07,0x7f,0x6f,
    0x77,0x7c,0x39,0x5e,0x79,0x71
    };
    void delayms(uint);
    void display(uchar,uchar);
    uchar num,num1,num2,shi,ge;
    void main()
    {
     TMOD=0x01; //设置定时器0和1为工作方式1(00010001)
    TH0=(65536-45872)/256; //装初值
    TL0=(65536-45872)%256;
    TH1=(65536-45872)/256; //装初值
    TL1=(65536-45872)%256;
    EA=1;
    ET0=1;
    ET1=1;
    TR0=1;
    TR1=1;
    while(1)
    {
    display(shi,ge);
    }
    }


    void display(uchar shi,uchar ge)
    {
    dula=1;
    P0=table[shi];
    dula=0;
    wela=1;
    P0=0xfe;
    wela=0;
    delayms(5);

    dula=1;
    P0=table[ge];
    dula=0;
    wela=1;
    P0=0xfd;
    wela=0;
    delayms(5);

    }


    void delayms(uint xms)
    {
    uint i,j;
    for(i=xms;i>0;i--)
    for(j=110;j>0;j--);
    }


    void T0_time() interrupt 1
    {
    TH0=(65536-45872)/256; //重装初值
    TL0=(65536-45872)%256;
    num1++;
    if(num1==4) //假设到了4次,说明200ms的时间到了
    {
    num1=0; //然后吧num1清0又一次再计4次
    led1=~led1; //让发光管状态取反
    }
    }


    void T1_time() interrupt 3
    {
    TH1=(65536-45872)/256; //重装初值
    TL1=(65536-45872)%256;
    num2++;
    if(num2==200) //假设到了20次,说明1秒时间到
    {
    num2=0; //清0,再计时
    num++;
    if(num==60) //到60归0
    num=0;
    shi=num/10;
    ge=num%10;
    }
    }
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  • 原文地址:https://www.cnblogs.com/mqxnongmin/p/10969895.html
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