#include <DHT22.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd (0x27,20,4);

#define kipas 3
#define pinDATA 2
#define pemanas 4
#define lampu 13
#define ldr A0

DHT22 dht22(pinDATA); 

void setup() {
  // put your setup code here, to run once:
  pinMode(kipas, OUTPUT);
  pinMode(ldr, INPUT);
  pinMode(lampu, OUTPUT);
  pinMode(pemanas, OUTPUT);
  Serial.begin(115200); //1bit=10µs
  Serial.println("\ntest capteur DTH22");
  lcd.init();
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  int membaca_analog = analogRead(ldr);
  Serial.print("Hasil baca: ");
  Serial.println(membaca_analog);

  float suhu = dht22.getTemperature();
  float lembab = dht22.getHumidity();

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Suhu:");
  lcd.print(suhu);
  lcd.setCursor(0,1);
  lcd.print("Kelembaban: ");
  lcd.print(lembab);
  lcd.setCursor(0,2);
  lcd.print("Kecerahan: ");
  lcd.print(membaca_analog);

  if (dht22.getLastError() != dht22.OK) {
    Serial.print("last error :");
    Serial.println(dht22.getLastError());
  }

  else if (membaca_analog <= 10){
    digitalWrite(lampu, LOW);
  }

  else if (membaca_analog >= 10 && membaca_analog <= 800){
    digitalWrite(lampu, HIGH);
  }

  else if (suhu > 20){
    digitalWrite(kipas, HIGH);
    digitalWrite(pemanas, LOW);
  }
  
  else {
    digitalWrite(kipas, LOW);
    digitalWrite(pemanas, HIGH);
    digitalWrite(lampu, LOW);
  }

  Serial.print("lembab=");Serial.print(lembab,1);Serial.print("\t");
  Serial.print("suhu=");Serial.println(suhu,1);
  delay(2000);
}