// Library
#include <DHT.h>
#include  <LiquidCrystal_I2C.h>

// Type Device
LiquidCrystal_I2C mylcd(0x27, 20, 4);
#define DHTTYPE DHT22

// Pin Device
#define DHTPIN 5
#define KIPAS 8
#define POMPA 9
#define anrPin 1

// Variabel Sensor
DHT dht(DHTPIN, DHTTYPE);
const float GAMMA = 0.7;
const float RL10 = 50;
float hum, temp, voltage, resistance, lux;
int analogValue;

// Method Setup
void setup()
{
  // Baudrate
  Serial.begin(9600);
  // Inisialisasi Pin State
  pinMode(POMPA, OUTPUT);
  pinMode(KIPAS, OUTPUT);
  // Memulai DHT
  dht.begin();
  // Memulai LCD 
  mylcd.init(); 
  // Splash Screen
  mylcd.backlight();
  delay(250);
  mylcd.noBacklight();
  delay(250);
  mylcd.backlight();
  // Menampilkan data pada LCD
  mylcd.setCursor(5,1);
  mylcd.print("Edspert.id");
  mylcd.setCursor(4,2);
  mylcd.print("Bootcamp Ke-4");
  delay(3000);
  // Menghapus penampilan data pada LCD
  mylcd.clear(); 
}

// Membaca dan Memberi Batasan pada sensor LDR
void Read_LDR_Sensor(){
  analogValue = analogRead(anrPin);
  voltage = analogValue * 5/1023.0;
  resistance = 2000 * voltage / (1 - voltage / 5);
  lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  if(lux >= 50000){
    digitalWrite(POMPA, HIGH); // Pompa Menyala
    Display_LCD("", "ON ", "");
  }
  else{
    digitalWrite(POMPA, LOW); // Pompa Mati
    Display_LCD("", "OFF ", "");
  }
}

// Membaca dan Memberi Batasan pada sensor DHT22
void Read_DHT22_Sensor(){
  hum = dht.readHumidity();
  temp = dht.readTemperature();
  if(temp > 25 && hum < 80){
    digitalWrite(KIPAS, HIGH); // Kipas Menyala
    digitalWrite(POMPA, HIGH); // Pompa Menyala
    Display_LCD("ON ", "", "ON ");
  }
  else if(temp > 25 && hum>= 80 ){
    digitalWrite(KIPAS, HIGH); // Kipas Menyala
    Display_LCD("OFF ", "", "ON ");
  }
  else if(temp <= 25 && hum < 80){
    digitalWrite(POMPA, HIGH); // Pompa Menyala
    Display_LCD("ON ", "", "OFF ");
  }
  else{
    digitalWrite(KIPAS, LOW); // Kipas Mati
    digitalWrite(POMPA, LOW); // Pompa Mati
    Display_LCD("OFF ", "", "OFF ");
  }
}

// Cetak Data di Serial Monitor
void Display_Serial_Monitor(){
  Serial.print("Humidity: ");
  Serial.print(hum);
  Serial.print(", Temperature: ");
  Serial.print(temp);
  Serial.print(", Illuminance: ");
  Serial.println(lux);
}

// Cetak Data Sensor di LCD
void Display_LCD(String POMPADHT22, String POMPALDR, String FAN){
    mylcd.setCursor(0,0);
    mylcd.print("H:");
    mylcd.print(hum,1);
    mylcd.print("%");
    mylcd.setCursor(13,0);
    mylcd.print("POM:"); 
    mylcd.print(POMPADHT22);
    mylcd.setCursor(0,1);
    mylcd.print("T:");
    mylcd.print(temp,1);
    mylcd.print((char)223);
    mylcd.println("C");
    mylcd.setCursor(13,1);
    mylcd.print("FAN:"); 
    mylcd.print(FAN);
    mylcd.setCursor(0,2);
    mylcd.print("L:");
    mylcd.print(lux,1);
    mylcd.println("lx");
    mylcd.setCursor(13,2);
    mylcd.print("POM:"); 
    mylcd.print(POMPALDR);
}

// Method Loop
void loop()
{
  Read_LDR_Sensor();
  Read_DHT22_Sensor();
  Display_Serial_Monitor();
  delay(500);
}

// Nama Peserta Edspert.id : Devan Cakra Mudra Wijaya, S.Kom.