#include <Wire.h>
#include <LiquidCrystal_I2C.h>

const int buttonModePin = 18;    // Pin untuk tombol mode
const int buttonIncPin = 17;     // Pin untuk tombol peningkatan nilai
const int buttonDecPin = 16;     // Pin untuk tombol penurunan nilai
const int sensorFlowPin = 4;    // Pin untuk membaca nilai Sensor FlowRate
const int sensorOksigenPin = 15;   // Pin untuk membaca nilai Sensor Oksigen
const int sensorDHT22Pin = 2;      // Pin untuk membaca nilai Sensor DHT22
const int ledValuePin = 12;      // Pin untuk output Mosfet IRF520 dan Valve

int hasilPotFlow;
int hasilPotOks;
int hasilPotDHT22;

int currentMode = 1;            // Mode awal
int currentTemperature = 25;    // Suhu awal (misalnya dalam derajat Celsius)
int currentAirSpeed = 0;        // Kecepatan aliran udara awal
int currentFlowRate = 0;        // Nilai awal sensor FlowRate
int currentOksigen = 0;         // Nilai awal sensor Oksigen
int currentDHT22 = 0;           // Nilai awal sensor DHT22

LiquidCrystal_I2C lcd(0x27, 20, 4);  // Alamat I2C LCD 16x4

void setup() {
  pinMode(buttonModePin, INPUT);
  pinMode(buttonIncPin, INPUT);
  pinMode(buttonDecPin, INPUT);
  pinMode(sensorFlowPin, INPUT);
  pinMode(sensorOksigenPin, INPUT);
  pinMode(sensorDHT22Pin, INPUT);
  pinMode(ledValuePin, OUTPUT);

  Wire.begin();
  Serial.begin(115200);
  lcd.begin(20, 4);  // Inisialisasi LCD

  // Menampilkan mode, suhu, dan kecepatan awal pada LCD
  updateLCD();
}

void loop() {
  //Baca nilai FlowRate dan Oksigen
  hasilPotFlow = analogRead(sensorFlowPin);
  currentFlowRate = map(hasilPotFlow, 0, 4095, 10, 60);

  hasilPotOks = analogRead(sensorOksigenPin);
  currentOksigen = map(hasilPotOks, 0, 4095, 20, 100);

  hasilPotDHT22 = analogRead(sensorDHT22Pin);
  currentDHT22 = map(hasilPotDHT22, 0, 4095, 0, 100);

  // Baca status tombol dan lakukan aksi sesuai dengan kondisi
  if (digitalRead(buttonModePin) == HIGH) {
    delay(50);  // Debouncing
    currentMode = (currentMode % 2) + 1;  // Ganti mode (1, 2)
    updateLCD();
    while(digitalRead(buttonModePin) == HIGH);  // Tunggu sampai tombol dilepas
  }

  if (digitalRead(buttonIncPin) == HIGH) {
    delay(50);  // Debouncing
    if (currentMode == 1) {
      currentAirSpeed = min(currentAirSpeed + 1, 100);  // Tambah kecepatan aliran udara (contoh)
    } else {
      currentTemperature = min(currentTemperature + 1, 100);  // Tambah suhu (contoh)
    }
    updateLCD();
    while(digitalRead(buttonIncPin) == HIGH);  // Tunggu sampai tombol dilepas
  }

  if (digitalRead(buttonDecPin) == HIGH) {
    delay(50);  // Debouncing
    if (currentMode == 1) {
      currentAirSpeed = max(currentAirSpeed - 1, 0);  // Kurangi kecepatan aliran udara (contoh)
    } else {
      currentTemperature = max(currentTemperature - 1, 0);  // Kurangi suhu (contoh)
    }
    updateLCD();
    while(digitalRead(buttonDecPin) == HIGH);  // Tunggu sampai tombol dilepas
  }
}

void updateLCD() {
  lcd.clear();
  lcd.setCursor(0, 0);

  if (currentMode == 1) {
    lcd.print("Mode: Flow Rate");
    lcd.setCursor(0, 1);
    lcd.print("Flow: ");
    lcd.print(currentAirSpeed);
    lcd.print(" L/min");
  } else {
    lcd.print("Mode: Temperature");
    lcd.setCursor(0, 1);
    lcd.print("Temp: ");
    lcd.print(currentTemperature);
    lcd.print(" C");
  }
 
  lcd.setCursor(0, 2);
  lcd.print("Keadaan sekarang: ");
  
  lcd.setCursor(0, 3);
  lcd.print("F:");
  lcd.print(currentFlowRate);
  lcd.setCursor(4, 3);
  lcd.print("L/m");
  
  lcd.setCursor(8, 3);
  lcd.print("O:");
  lcd.print(currentOksigen);
  lcd.setCursor(12, 3);
  lcd.print("%");

  lcd.setCursor(14, 3);
  lcd.print("T:");
  lcd.print(currentDHT22);
  lcd.setCursor(19, 3);
  lcd.print("C");
  
  delay(500);
}