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

int pins[3] = {14, 18, 17};   // red, green, blue pins grouped in an array

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

// Turns on all LEDs in the array together (white light)
void showWhite(int onTime) {
  for (int i = 0; i < 3; i++) {
    digitalWrite(pins[i], HIGH);   // turn all LEDs on
  }
  delay(onTime);
  for (int i = 0; i < 3; i++) {
    digitalWrite(pins[i], LOW);    // turn all LEDs off
  }
}

void setup() {
  Serial.begin(115200);
  for (int i = 0; i < 3; i++) {
    pinMode(pins[i], OUTPUT);      // set each pin as output using the array
  }
}

void loop() {
  for (int i = 0; i < 3; i++) {
    showColor(pins[i], 500);       // cycles through red, green, blue automatically
  }
  showWhite(500);
}