text1.c

proteus的一个小定时计时

#include <reg52.h>
#include <stdio.h>

unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,

                               0x66,0x6d,0x7d,0x07,

                               0x7f,0x6f,0x77,0x7c,

                               0x39,0x5e,0x79,0x71,0x00};

unsigned char dispbitcode[]={0xfe,0xfd,0xfb,0xf7,

                             0xef,0xdf,0xbf,0x7f};

unsigned char dispbuf[8]={0,0,16,0,0,16,0,0};

unsigned char dispbitcnt;



unsigned char second;

unsigned char minite;

unsigned char hour;

unsigned int tcnt;

unsigned char mstcnt;



unsigned char i,j;



void main(void)

{

  TMOD=0x02;

  TH0=0x06;

  TL0=0x06;

  TR0=1;

  ET0=1;

  EA=1;



  while(1)

    {

      if(P0==0XFE)

        {

          for(i=5;i>0;i--)

          for(j=248;j>0;j--);

          if(P0==0XFE)

            {

              second++;

              if(second==60)

                {

                  second=0;

                }

              dispbuf[0]=second%10;

              dispbuf[1]=second/10;

              while(P0==0XFE);

            }

        }

      if(P0==0XFD)

        {

          for(i=5;i>0;i--)

          for(j=248;j>0;j--);

          if(P0==0XFD)

            {

              minite++;

              if(minite==60)

                {

                  minite=0;

                }

              dispbuf[3]=minite%10;

              dispbuf[4]=minite/10;

              while(P0==0XFD);

            }

        }

      if(P0==0XFB)

        {

          for(i=5;i>0;i--)

          for(j=248;j>0;j--);

          if(P0==0XFB)

            {

              hour++;

              if(hour==24)

                {

                  hour=0;

                }

              dispbuf[6]=hour%10;

              dispbuf[7]=hour/10;

              while(P0==0XFB);

            }

        }

    }

}

void t0(void) interrupt 1 using 0

{

  mstcnt++;

  if(mstcnt==8)

    {

      mstcnt=0;

      P1=dispcode[dispbuf[dispbitcnt]];

      P3=dispbitcode[dispbitcnt];

      dispbitcnt++;

      if(dispbitcnt==8)

        {

          dispbitcnt=0;

        }

    }

  tcnt++;

  if(tcnt==4000)

    {

      tcnt=0;

      second++;

      if(second==60)

        {

          second=0;

          minite++;

          if(minite==60)

            {

              minite=0;

              hour++;

              if(hour==24)

                {

                  hour=0;

                }

            }

        }

      dispbuf[0]=second%10;

      dispbuf[1]=second/10;

      dispbuf[3]=minite%10;

      dispbuf[4]=minite/10;

      dispbuf[6]=hour%10;

      dispbuf[7]=hour/10;

    }

}