简单时钟显示程序（只显示时分秒）（C语言，可用于51单片

zerogocyz · 发表于 2021-7-20 16:18:23

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#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int

sbit dula=P2^7;
sbit wela=P2^6;
sbit led1=P1^0;

uchar code table[]={
0x5f,0x41,0x9b,0xcb,
0xc5,0xce,0xde,0x47,
0xdf,0xcf,0xd7,0xdc,
0x1e,0xd9,0x9e,0x96};

void delayms(uint);
void display(uchar,uchar,uchar,uchar);
uchar fen,miao,num1,num2,fshi,fge,mshi,mge,dian;

void main()
{
TMOD=0x11;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;

while(1)
{
      display(fshi,fge,mshi,mge);
}
}

void display(uchar fshi,uchar fge,uchar mshi,uchar mge)
{
      dula=1;
      P0=table[fshi];
      dula=0;
      P0=0xff;
      wela=1;
      if(fen>9)
         P0=0xf7;
      else
         P0=0xff;
      wela=0;
      delayms(5);

      dula=1;
      if(dian==1)
         P0=table[fge]+0x20;
      else
         P0=table[fge];
      dula=0;
      P0=0xff;
      wela=1;
      P0=0xfb;
      wela=0;
      delayms(5);

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

      dula=1;
      P0=table[mge];
      dula=0;
      P0=0xff;
      wela=1;
      P0=0xfe;
      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;
TL0=(65536-45872)%256;
num1++;
if(num1==4)
{
      num1=0;
      led1=~led1;
}
}

void T1_time() interrupt 3
{
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
num2++;
if(num2==1)
{
      num2=0;
      miao++;
      if(miao==60)
         {miao=0;
         fen++;}
      if(fen==24)
         fen=0;
      mshi=miao/10;
      mge=miao%10;
      fshi=fen/10;
      fge=fen%10;
      dian=miao%2;
}
}