帮忙看下程序怎么K2.K3没有动作

只看该作者 · 2013-11-18 10:58

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
unsigned char counter;
  sbit K1=P2^1;
  sbit K2=P2^2;
  sbit K3=P2^3;
  sbit LED1=P0^2;
  sbit LED2=P0^1;
  sbit LED3=P0^3;
  sbit RELAY=P0^4;
  sbit RELAY1=P0^5;

/********延时********/
void DelayMS(uint ms)
{
uchar t;
   while(ms--)
      for(t=0;t<120;t++);
}
/********主程序********/
void main()
{
          P0=0x100;
      P2=0xff;
         LED2=K2;
      LED3=K3;
  while(1)
{

if(K1==0)
   {
while(K1==0);
counter++;
   if(counter>=20)
   RELAY=1;
LED1=~LED1;
   if(counter>=10)
   RELAY1=1;
   DelayMS(10);    //延时20MS
{
   }
   }
   }
}