led点阵

刚来   也发点东西吧  呵呵  大家一起学习学习，关于LED点阵显示驱动！8X8显示程序。

#include <AT89X52.H>

unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

unsigned char code digittab[64]={0x00,0x00,0x00,0x00,
                                 0x4c,0x34,0x34,0xdc,0x4e,0x3c,0x44,0x8c,0x00,  //欢
                                 0x49,0x7a,0xbc,0xa2,0xfd,0xa4,0xbc,0x80,0x00,  //迎
            0x88,0x8a,0xfc,0x0f,0xfc,0x8b,0x88,0xc0,0x00,  //光
            0x38,0xfe,0xe8,0xa6,0xec,0xac,0xf4,0x00,0x00,  //临
            0x00,0x00,0x00   };

unsigned int timecount;

unsigned char cnta;

unsigned char n;

void main(void)

{

  TMOD=0x01;

  TH0=(65536-3000)/256;

  TL0=(65536-3000)%256;

  TR0=1;

  ET0=1;

  EA=1;

  while(1)

    {;

    }

}

void t0(void) interrupt 1 using 0

{

  TH0=(65536-3000)/256;

  TL0=(65536-3000)%256;

  P2=tab[cnta];

  P0=digittab[cnta+n];

  cnta++;

  if(cnta==8)

    {

      cnta=0;

    }

  timecount++;

  if(timecount==100)

    {

      timecount=0;

      n++;

      if(n>42)

        {

          n=0;
    

        }

    }

}