#define LED_PIN 2
#define LDR_PIN 34

#define PWM_FREQ 5000
#define PWM_RES 8

void setup() {
  // Serial.begin(115200);
  // Serial.println("Hello, ESP32!");

  ledcAttach(LED_PIN, PWM_FREQ, PWM_RES);
}

void loop() {
  int ldrVal = analogRead(LDR_PIN);

  int dutyCycle = map(ldrVal, 0, 4095, 0, 255); // inversion: brighter environment --> dimmer LED
  // Serial.println(dutyCycle);

  ledcWrite(LED_PIN, dutyCycle);
  delay(50);
}