⚡ ماموریت ۳۶: شمارش با وقفه

سیم‌کشی

1. Arduino Uno (D2) ⟷ Push Button (PIN_A1)
2. Push Button (PIN_B1) ⟷ Arduino Uno (GND1)

کد

const int button = 2, led = 13;
volatile int count = 0;
volatile bool changed = false;

void onPress() {
  count++;
  changed = true;
}

void setup() {
  pinMode(button, INPUT_PULLUP);
  pinMode(led, OUTPUT);
  attachInterrupt(digitalPinToInterrupt(button), onPress, FALLING);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(led, HIGH);
  delay(400);
  digitalWrite(led, LOW);
  delay(400);

  if (changed) {
    changed = false;
    Serial.print("shomare:");
    Serial.println(count);
  }
}