// Two LED Toggle

const int BTN_PIN = 12;
const int LED1_PIN = 11;
const int LED2_PIN = 10;

bool led1State = false;
bool led2State = false;
int oldBtnState = HIGH; // pin idles HIGH

bool checkButton()  {
  bool wasPressed = false;

  int btnState = digitalRead(BTN_PIN);  // read the pin
  if (btnState != oldBtnState)  {       // if it changed
    oldBtnState = btnState;             // remember the state
    if (btnState == LOW)  {             // was just pressed
      Serial.println("Button Pressed");
      wasPressed = true;
    } else  {                           // was just released
      Serial.println("Button Released");
    }
    delay(20);  // short delay to debounce button
  }
  return wasPressed;
}

void setup() {
  Serial.begin(115200);
  pinMode(BTN_PIN, INPUT_PULLUP);
  pinMode(LED1_PIN, OUTPUT);
  pinMode(LED2_PIN, OUTPUT);
}

void loop() {
  bool wasPressed = checkButton();
  if (wasPressed) {
    led1State = !led1State;
    led2State = !led1State;
    digitalWrite(LED1_PIN, led1State);
    digitalWrite(LED2_PIN, led2State);
  }
}