#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>

#define ldrPin 13
#define buzz 15
#define dhtPin 12

const int pinLampu = 19;
const float gama = 0.7;
const float rl10 = 50;

DHTesp sensorDHT;
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  sensorDHT.setup(dhtPin, DHTesp::DHT22);
  pinMode(ldrPin, INPUT);
  pinMode(pinLampu, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2, 0);
  lcd.println("Welcome Faiz");
  lcd.setCursor(2, 1);
  lcd.print("210605110171");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(2000); // this speeds up the simulation
  lcd.clear();
  int nilaiLDR = analogRead(ldrPin);
  nilaiLDR = map(nilaiLDR, 4095, 0, 1024, 0);
  float voltase = nilaiLDR / 1024.*5;
  float resistansi = 2000 * voltase / (1-voltase/5);
  float kecerahan = pow(rl10*1e3*pow(10,gama)/resistansi,(1/gama));
  Serial.print("Kecerahan = ");
  Serial.println(kecerahan);
  lcd.print("Kecerahan :"+String(kecerahan));

  delay(1000);
  lcd.clear();
  TempAndHumidity data = sensorDHT.getTempAndHumidity();
  lcd.setCursor(0,0);
  lcd.println("Suhu: "+String(data.temperature)+"C");
  lcd.setCursor(0,1);
  lcd.println("Kelembaban: "+String(data.humidity)+"%");

  digitalWrite(buzz, HIGH);

  delay(1000);
  if(kecerahan > 400){
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.println("Waktu Cerah.");
    lcd.setCursor(0, 1);
    lcd.println("lampu dimatikan!");
    digitalWrite(pinLampu, LOW);
    noTone(buzz);
  }
  else{
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.println("Waktu Gelap.");
    lcd.setCursor(0, 1);
    lcd.println("Lampu dihidupkan!");
    digitalWrite(pinLampu, HIGH);
    tone(buzz, 100);
  }
}