int pinInterrupt = 2; //定义中断管脚

void onChange()
{
  while ( digitalRead(pinInterrupt) == LOW ){}
    //delay(1000); //挂起不工作了，直到管脚2恢复高电平
}

void setup()
{
  //设置管脚为输入:
  pinMode( pinInterrupt, INPUT);

  //Enable中断管脚，中断服务程序为onChange()，监视引脚变化:
  attachInterrupt( digitalPinToInterrupt(pinInterrupt), onChange, CHANGE);
}  
  
void loop()  
{  
  digitalWrite(13, HIGH);
 delay(500);
 digitalWrite(13, LOW);
 delay(1000);
 Serial.println("-");
}

/*用于测试按钮工作的部分
#define BT 2

void setup() 
{
  Serial.begin(9600);
  pinMode(13,OUTPUT);

  pinMode(BT, INPUT);
  //while(digitalRead(BT))
  //{Serial.println(digitalRead(BT));delay();}
    
  
}

void loop() 
{
 if(digitalRead(BT))
 {
   digitalWrite(13, HIGH);
   //delay(500);
 }
 else
 {
   digitalWrite(13, LOW);
   //delay(500);
 }
 
 Serial.println("-");
}*/