#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h> // تضمين مكتبة DHT

#define ADC_VREF_mV    5000.0 // in millivolt
#define ADC_RESOLUTION 1024.0
#define PIN_LM35       A0

#define DHTPIN 2      // تعيين رقم دبوس الاستشعار
#define DHTTYPE DHT22 // تحديد نوع المستشعر

DHT dht(DHTPIN, DHTTYPE); // تعريف المستشعر

// Set the LCD address to 0x27 or 0x3F based on your actual address
LiquidCrystal_I2C lcd(0x27, 16, 2); // Change to your LCD's address

void setup() {
  Serial.begin(9600);

  // Initialize the LCD
  lcd.init();
  lcd.backlight(); // Enable backlight

  // Set up the LCD's number of columns and rows (not needed for LiquidCrystal_I2C)
  // lcd.begin(16, 2);

  dht.begin(); // بدء المستشعر
}

void loop() {
  // قراءة بيانات درجة الحرارة والرطوبة
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // التحقق مما إذا كانت القراءة ناجحة
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // get the ADC value from the LM35 temperature sensor
  int adcVal = analogRead(PIN_LM35);
  // convert the ADC value to voltage in millivolt
  float milliVolt = adcVal * (ADC_VREF_mV / ADC_RESOLUTION);
  // convert the voltage to the temperature in Celsius
  float tempC = milliVolt / 10;
  // convert the Celsius to Fahrenheit
  float tempF = tempC * 9 / 5 + 32;

  // clear the LCD screen
  lcd.clear();
  // print the temperature on the LCD screen
  lcd.setCursor(0, 0);
  lcd.print("Temp LM35: ");
  lcd.print(tempC);   // print the temperature in Celsius
  lcd.print("C ");
  lcd.print(tempF);   // print the temperature in Fahrenheit
  lcd.print("F");

  // print the temperature and humidity on the Serial Monitor
  Serial.print("Temperature (LM35): ");
  Serial.print(tempC);   // print the temperature in Celsius
  Serial.print("°C");
  Serial.print("  ~  "); // separator between Celsius and Fahrenheit
  Serial.print(tempF);   // print the temperature in Fahrenheit
  Serial.println("°F");

  Serial.print("Temperature (DHT22): ");
  Serial.print(temperature);   // print the temperature in Celsius
  Serial.print("°C");
  Serial.print("  Humidity: ");
  Serial.print(humidity);   // print the humidity
  Serial.println("%");

  delay(1000);
}