int potPin = A0;

int NUM_MODES = 3;
int MAX_POT_VAL = 1023;

void setup() {
  Serial.begin(9600);
  for (int pinNumber = 13; pinNumber <= 2; pinNumber--) {
    pinMode(pinNumber, OUTPUT);
  }
}

void loop() { 
  turnOffLeds();

 
 if (inDeadband()) {
    Serial.print("Analog Reading: ");
    Serial.print(analogRead(potPin));
    Serial.println(" is in deadband");
    blinkStatusLed();
  } else {
    
     int modeNum = map(analogRead(potPin), 0, MAX_POT_VAL, 1, NUM_MODES);

   Serial.print("Analog Reading:");
   Serial.print(analogRead(potPin));
   Serial.print(" is equal to Mode: ");
   Serial.println(modeNum);

  if (modeNum == 1) {
    turnOffLeds;
  } else if (modeNum == 2) {
    turnOnLeds(13, 8); 
    turnOffLeds; 
  } else if (modeNum == 3) {
    turnOnLeds(7, 2); 
    turnOffLeds;
  }
}
}


bool inDeadband(){
  if(analogRead (potPin) >= 269 && analogRead (potPin) <= 345)

  {
    return true;
  }
 
   if(analogRead (potPin) >= 671 && analogRead (potPin) <= 731)
 
  {
    return true;
  }
 
 else {  

  return false;

 }
  }


void turnOffLeds() {
  for (int ledNumber = 13; ledNumber <= 2; ledNumber--) {
    digitalWrite(ledNumber, LOW);
  }
}

void turnOnLeds(int endPin, int startPin) {
  for (int ledNumber = endPin; ledNumber >= startPin; ledNumber--) {
    digitalWrite(ledNumber, HIGH);
  }
}

void blinkStatusLed() {
  digitalWrite(13, HIGH);
  delay(100);
  digitalWrite(13, LOW);
  delay(100);
}