#define SW 2
#define RED_LED 6
#define YELLOW_LED 5

void setup() {
  pinMode(SW, INPUT_PULLUP);
  pinMode(RED_LED, OUTPUT);
  pinMode(YELLOW_LED, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  int buttonState = digitalRead(SW);

  if (buttonState == LOW) {
    digitalWrite(RED_LED, LOW);
    digitalWrite(YELLOW_LED, HIGH);
    Serial.println("BUTTON PRESSED");
  }
  else {
    digitalWrite(RED_LED, HIGH);
    digitalWrite(YELLOW_LED, LOW);
    Serial.println("BUTTON RELEASED");
  }

  delay(100);
}