硬件基础知识学习

使LED闪烁
#include<reg52.h>

int i;
sbit LED = P0^0;
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;

void main ()
{
        ENLED = 0;
  ADDR3 = 1;
        ADDR2 = 1;
        ADDR1 = 1;
        ADDR0 = 0;
       
  for(i=0;i<30000;i++)
        {
                LED = 0;
        }
        while(1);
}