用8x8点阵LED屏显示的小程序 -

标题: 用8x8点阵LED屏显示的小程序 [打印本页]

作者: dpj555 时间: 2016-12-11 15:59
标题: 用8x8点阵LED屏显示的小程序
用8x8点阵屏，显示“I LOVE YOU 生日快乐”，使用STC  89C52RD P1口和P0 口，有兴趣的可以试试。
#include <reg51.h>
unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char code digittab[][8]={
{0xff,0xbf,0xbd,0xbd,0x81,0xbd,0xbd,0xff},    //I
{0xff,0xf3,0xed,0xdd,0xbb,0xdd,0xed,0xf3},    //?
{0xff,0xff,0x81,0x7f,0x7f,0x7f,0x81,0xff},       //U
{0xbf,0xaf,0xab,0xab,0x80,0xab,0xa8,0xa7},    //生
{0xff,0xff,0x00,0x76,0x76,0x76,0x00,0xff},    //日
{0xbf,0xa3,0xc0,0xab,0xbf,0xcf,0x00,0xf3},    //快
{0xb7,0xd6,0xa5,0x05,0xe5,0xd1,0xbf,0xff},    //乐
};
unsigned int timecount;
unsigned char cnta;
unsigned char cntb;
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=(65536-2000)/256;
  TL0=(65536-2000)%256;
  P1=0XFF; //消除显示重影问题
  P0=~digittab[cntb][cnta];
  P1=~(0x01<<cnta);

  cnta++;
  if(cnta==8)
{
   cnta=0;
}
  timecount++;
  if(timecount==500)
{
   timecount=0;
   cntb++;
   if(cntb==7)
      {
      cntb=0;
      }
}
}

作者: monthyasha 时间: 2018-12-4 07:35
前面的tab有什么特别的作用吗？

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