p4-16

2015/11/6

程式碼

const byte LED =13;

const byte SW = 2;

boolean lastState = LOW;

boolean toggle = LOW;

byte click = 0;

void setup() {

// put your setup code here, to run once:

pinMode(LED,OUTPUT);

pinMode(SW,INPUT);

lastState = digitalRead(SW);

}

void loop() {

// put your main code here, to run repeatedly:

boolean b1 = digitalRead(SW);

if(b1 !=lastState) {

delay(20);

boolean b2 = digitalRead(SW);

if(b1==b2){

lastState = b1;

click ++;

}

}

if(click ==2){

click = 0;

toggle = !toggle;

digitalWrite(LED,toggle);

}

}