/*
==== Task 2 - RGB Colour Cycle Using a Function ====
              Author: Roberto Palozzo
====================================================
*/

int redPin = 14;                 // Pin connected to the red LED
int greenPin = 18;               // Pin connected to the green LED
int bluePin = 17;                // Pin connected to the blue LED

// Turns on a single LED for "onTime" ms, then turns it off
void showColor(int pin, int onTime) {
  digitalWrite(pin, HIGH);       // turn LED on
  delay(onTime);                 // keep it on
  digitalWrite(pin, LOW);        // turn LED off
}

// Turns on all three LEDs together to make white light
void showWhite(int onTime) {
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);
  delay(onTime);                 // keep white light on
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);
}

void setup() {
  Serial.begin(115200);          // start serial communication (for debugging)
  pinMode(redPin, OUTPUT);       // set red pin as output
  pinMode(greenPin, OUTPUT);     // set green pin as output
  pinMode(bluePin, OUTPUT);      // set blue pin as output
}

void loop() {
  showColor(redPin, 500);        // show red for 500 ms
  showColor(greenPin, 500);      // show green for 500 ms
  showColor(bluePin, 500);       // show blue for 500 ms
  showWhite(500);                // show white for 500 ms
}