const int redPin = 15;
const int greenPin = 2;
const int bluePin = 4;
const int potPin = 14;
const int buttonPin = 13;

int redBrightness = 0;
int greenBrightness = 1;
int blueBrightness = 2;
int currentColor = 0; // 0: Red, 1: Green, 2: Blue

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  int potValue = analogRead(potPin); // Read the potentiometer value
  int buttonState = digitalRead(buttonPin); // Read the button state

  // Map the potentiometer value to LED brightness (0-255)
  int brightness = map(potValue, 0, 1023, 0, 255);

  // Check if the button is pressed and change the LED color
  if (buttonState == LOW) {
    currentColor = (currentColor + 1) % 3; // Cycle through Red, Green, Blue
    delay(250); // Debounce delay
  }

  // Set LED brightness based on the current color
  if (currentColor == 0) {
    redBrightness = brightness;
  } else if (currentColor == 1) {
    greenBrightness = brightness;
  } else if (currentColor == 2) {
    blueBrightness = brightness;
  }

  // Update the LED brightness using the LEDC library (PWM)
  ledcSetup(0, 5000, 8); // PWM frequency = 5 kHz, 8-bit resolution
  ledcAttachPin(redPin, 0);
  ledcWrite(0, redBrightness);

  ledcSetup(1, 5000, 8);
  ledcAttachPin(greenPin, 1);
  ledcWrite(1, greenBrightness);

  ledcSetup(2, 5000, 8);
  ledcAttachPin(bluePin, 2);
  ledcWrite(2, blueBrightness);
}