const int led1 = 12, led2 = 14, led3 = 27;
const int btn1 = 33, btn2 = 32;
const int poten = 25;
bool systemOn = false, leftToRight = true;

void setup() {
  Serial.begin(115200);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(btn1, INPUT_PULLUP);
  pinMode(btn2, INPUT_PULLUP);
  pinMode(poten, INPUT);
}

void loop() {
  int btnValue1 = digitalRead(btn1);
  int btnValue2 = digitalRead(btn2);
  int potenValue = analogRead(poten);
  int speed = map(potenValue, 0, 4095, 100, 1000);

  if (btnValue1 == 0) {
    while (digitalRead(btn1) == 0);
    systemOn = !systemOn;
  }
  if (btnValue2 == 0) {
    leftToRight = !leftToRight;
  }
  Serial.print("System");
  if (systemOn) Serial.print("on");
  else Serial.print("off");
  Serial.print(",speed: ");
  Serial.println(speed);
  if (systemOn) {
    if (leftToRight) {
      digitalWrite(led1, HIGH);
      delay(100);
      digitalWrite(led1, LOW);
      delay(speed);
      digitalWrite(led2, HIGH);
      delay(100);
      digitalWrite(led2, LOW);
      delay(speed);
      digitalWrite(led3, HIGH);
      delay(100);
      digitalWrite(led3, LOW);
      delay(speed);
    } else {
      digitalWrite(led3, HIGH);
      delay(100);
      digitalWrite(led3, LOW);
      delay(speed);
      digitalWrite(led2, HIGH);
      delay(100);
      digitalWrite(led2, LOW);
      delay(speed);
      digitalWrite(led1, HIGH);
      delay(100);
      digitalWrite(led1, LOW);
      delay(speed);
    }
  }
  delay(100);
}