const int touchPin = D0;
const int ledPin   = D1;   // LED1
const int ledPin2  = D2;   // LED2

const unsigned long LED_ON_MS = 500;

int touchCount = 0;
bool touchLatched = false;

void pulseLeds(bool led1On, bool led2On) {
  digitalWrite(ledPin, led1On ? HIGH : LOW);
  digitalWrite(ledPin2, led2On ? HIGH : LOW);
  delay(LED_ON_MS);
  digitalWrite(ledPin, LOW);
  digitalWrite(ledPin2, LOW);
}

void setup() {
  pinMode(touchPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  int touch = digitalRead(touchPin);

  if (touch == HIGH && !touchLatched) {
    touchLatched = true;
    touchCount++;
    int phase = touchCount % 3;

    if (phase == 1) {
      pulseLeds(true, false);   // 1st touch → LED1
    } else if (phase == 2) {
      pulseLeds(false, true);   // 2nd touch → LED2
    } else {
      pulseLeds(true, true);    // 3rd touch → both
    }
  }

  if (touch == LOW) {
    touchLatched = false;       // ready for next touch
  }
}