// Language: Arduino/C++
// ESP32 RGB LED Blink Example

// Define pins for RGB LED
const int redPin = 25;    // GPIO pin connected to Red LED
const int greenPin = 26;  // GPIO pin connected to Green LED
const int bluePin = 27;   // GPIO pin connected to Blue LED

// Time interval for blinking (milliseconds)
const int blinkDelay = 500; 

void setup() {
  // Initialize each color pin as OUTPUT
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
}

void loop() {
  // Red ON, others OFF
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);
  delay(blinkDelay);

  // Green ON, others OFF
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, LOW);
  delay(blinkDelay);
  
  // Blue ON, others OFF
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);
  delay(blinkDelay);
  
  // Yellow (Red + Green) ON, Blue OFF
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, LOW);
  delay(blinkDelay);

  // Cyan (Green + Blue) ON, Red OFF
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);
  delay(blinkDelay);

  // Magenta (Red + Blue) ON, Green OFF
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, HIGH);
  delay(blinkDelay);

  // White (Red + Green + Blue) ON
  digitalWrite(redPin, HIGH);
  digitalWrite(greenPin, HIGH);
  digitalWrite(bluePin, HIGH);
  delay(blinkDelay);
  
  // Turn all OFF before next loop iteration
  digitalWrite(redPin, LOW);
  digitalWrite(greenPin, LOW);
  digitalWrite(bluePin, LOW);
  delay(blinkDelay);
}