#define LIGHT_SENSOR_PIN 32
#define LED 26
const float gama = 0.7;
const float rl10 = 50;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(LED, OUTPUT);
}

void loop() {
  int ldrValue = analogRead(LIGHT_SENSOR_PIN);
  ldrValue = map(ldrValue, 4095, 0, 1024, 0); //mengubah nilai pembacaan sensor LDR dari nilai ADC arduino menjadi nilai ADC ESP32
  float voltage = ldrValue / 1024.*5;
  float resistance = 2000 * voltage / (1-voltage/5);
  float brightness = pow(rl10*1e3*pow(10,gama)/resistance,(1/gama));
/*  
  Serial.print("Analog Value = ");
  Serial.print(brightness);
 
  Serial.println("");
*/
  if (brightness > 0 && brightness <= 50){
    digitalWrite(LED, HIGH);
    Serial.println("Keadaan Gelap");
    Serial.print("Analog Value = ");
    Serial.print(brightness);
  }else if (brightness > 50 && brightness <= 500){
    digitalWrite(LED, HIGH);
    Serial.println("Keadaan Redup");
    Serial.print("Analog Value = ");
    Serial.print(brightness);
  }else if (brightness > 500 && brightness <= 2000){
    digitalWrite(LED, LOW);
    Serial.println("Keadaan Terang");
    Serial.print("Analog Value = ");
    Serial.print(brightness);
  }else if (brightness > 2000){
    digitalWrite(LED, LOW);
    Serial.println("Keadaan sangat terang");
    Serial.print("Analog Value = ");
    Serial.print(brightness);
  }  
 delay(500);
}