【Arduino函数练习】Interrupt中断

volatile int statel = LOW ,state2 = LOW;int LED1 = 4;int LED2 = 5;int LED3 = 13;//为什么没有设置D2（按钮）int button = 2;void setup(){pinMode(LED1,OUTPUT);pinMode(LED2,OUTPUT);pinMode(LED3,OUTPUT);//为什么没有设置D2(按钮) pinMode(button ,INPUT);attachInterrupt(0,LED1_Change,LOW);attachInterrupt(1,LED2_Change,CHANGE);}void loop(){digitalWrite(LED3,HIGH);delay(500);digitalWrite(LED3,LOW);delay(500);}void LED1_Change(){state1 = !state1;digitalWrite(LED1, state1);delay(100);}void LED2_Change(){state2 = !state2;digitalWrite(LED2, state2);delay(100);}例程2：