text1.c

用PC来控制点阵LED的程序,用C 编写

#include <AT89X51.H>

#define uchar unsigned char;
uchar table[]={0xBF,0xFF,0xA1,0x81,0xAF,0xBD,0xAF,0xBB,0xA0,0xBB,0xAF,0xB7,0xF,0x16,0xA1,0xFD,0xFF,0xF3,0x01,0xF,0xFD,0xFF,0xFD,0xFF,0x00,0x03,0xFD,0xFD,0xFF,0xF1,0xFF,0xFF};
uchar i,j,z,a,b;
sbit en=P3^2;
void delay(void);
void main(void)
{TMOD=0x20;
 TH1=0xf3;
 TL1=0xf3;
 SCON=0x50;
 PCON=0x80;
 TR1=1;
 IE=0x90;
 P0=0x00;
 P2=0x00;
 while(1)
  {for(i=15;i>=0;i--)
     {for(j=4;j>=0;j--)//每个字的时间
        {for(z=i;z<=15;z++) 
           {P0=table[2*z-2*i+1];
            P2=table[2*z-2*i];
            en=0;
            P1=z;
            delay();
           }
        }
     }
  
  for(i=15;i>=0;i--)
     {for(j=4;j>=0;j--)
        {for(z=i;z>=0;z--) 
           {P0=table[2*z+31-2*i];
            P2=table[2*z+30-2*i];
            en=0;
            P1=z;
            delay();
           }
        }
     }
  }
}
  
void serial (void) interrupt 4 using 1
{if(RI==1)
  {RI=0;
   a=SBUF;
   SBUF=a;
  }
}

void delay(void)
 {for(a=6;a>0;a--)
  for(b=20;b>0;b--);
 }