/*
==== Task 3 - Function With a Return Value ====
            Author: Roberto Palozzo
===============================================
*/

const int ledPin = 13;                   // Pin connected to the LED

// This function turns the LED on or off
// and returns its new state
bool controlLED(bool turnOn) {
  digitalWrite(ledPin, turnOn);          // set LED to the given state
  return turnOn;                         // return the state that was set
}

void setup() {
  Serial.begin(115200);                  // start serial communication (for debugging)
  pinMode(ledPin, OUTPUT);               // set LED pin as output
}

void loop() {  
  bool ledState = controlLED(true);      // Turn the LED ON
  Serial.print("LED state: ");
  Serial.println(ledState);              // Prints 1 (ON)
  delay(1000);                           // wait 1 second

  ledState = controlLED(false);          // Turn the LED OFF
  Serial.print("LED state: ");
  Serial.println(ledState);              // Prints 0 (OFF)
  delay(1000);                           // wait 1 second
}