/*
 * This ESP32 code is created by esp32io.com
 *
 * This ESP32 code is released in the public domain
 *
 * For more detail (instruction and wiring diagram), visit https://esp32io.com/tutorials/esp32-ldr-module
 */

#define DO_PIN 13  // ESP32's pin GPIO13 connected to DO pin of the ldr module

void setup() {
  // initialize serial communication
  Serial.begin(9600);
  // initialize the ESP32's pin as an input
  pinMode(13, INPUT);
}

void loop() {
  int lightState = digitalRead(13);

  if (lightState == HIGH)
    Serial.println("It is dark");
  else
    Serial.println("It is light");
}