#include<iocc2530.h>
#define uchar unsigned char
#define uint unsigned int

void Initial(void)
{
  P1SEL&=~0X39;
  P1DIR|=0X39;
  P1SEL&=~0X04;
  P1DIR&=~0X04;
  P1INP&=~0X04;
  P1&=~0X39;
}

void Delay(uint time)
{
  uint i;
  uchar j;
  for(i=0;i<time;i++)
    for(j=0;j<240;j++)
    {
    asm("NOP");
    asm("NOP");
    asm("NOP");
    }
}

main()
{
  uchar count=0;
  uchar stat[]={0x20,0x01,0x10,0x08};
  Initial();
  while(1)
  {
    if(P1_2==0)
    {
      switch(count)
      {
      case 0:P1=stat[count];Delay(1200);break;
      case 1:P1=stat[count];Delay(1200);break;
      case 2:P1=stat[count];Delay(1200);break;
      case 3:P1=stat[count];Delay(1200);break;
      }
      if(count<=3)
        count++;
      else
        count=0;
    }
    else
    {
    P1=stat[count];
    Delay(1200);
    }
  }
}