led.c

lcd1286显示模块 EWB Quartus2编译 电子综合设计试验箱程序

#include "LED.h"
#include <reg51.h>
typedef unsigned char uint8;
uint8 code tab[]={0x3f,6,0x5b,0x4f,0x66,0x6d,0x7d,7,0x7f,0x6f,0,0x5c,0x5e};
//共阴LED断码表
uint8 code digit[8]={1,2,4,8,16,32,64,128};
uint8 n,d[8]={9,11,11,12,9,11,11,12};

void Timer0Init() //定时器初始化
{
	 TMOD=TMOD|0X01;
     TR0=1;
     ET0=1;
     EA=1;
}

TIMER() interrupt 1 using 1//使用定时器作为动态扫描使用
{  
   TH0=(65536-1000)/256;
   TL0=(65536-1000)%256;
   n++;
   if(n>7) n=0;
   LED=0;
   EN=~digit[n];
   if (n==1)
       LED=tab[d[n]]+0x80; 
   else
       LED=tab[d[n]];
   
 }