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

// Initialize the DHT sensor
#define DHTPIN 2  // what digital pin we're connected to
#define DHTTYPE DHT22   // DHT 22
DHT dht(DHTPIN, DHTTYPE);

// Initialize the servo
Servo servoMotor;
const int servoPin = 9;

// Set the temperature thresholds
const float tempThresholdHigh = 30.0; // Temperature to open water pump (high threshold)
const float tempThresholdLow = 25.0;  // Temperature to close water pump (low threshold)

// Initialize the LCD for I2C
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Set the LCD I2C address

void setup() {
  // Start the DHT sensor
  dht.begin();
  // Start the servo and attach it to its pin
  servoMotor.attach(servoPin);
  // Initialize the LCD
  lcd.init();
  // Turn on the backlight.
  lcd.backlight();
}

void loop() {
  // Read the humidity and temperature
  float h = 30;//dht.readHumidity();
  float t = 40;//dht.readTemperature();

  // Check if any reads failed
  if (isnan(h) || isnan(t)) {
    lcd.print("Failed to read from DHT sensor!");
    return;
  }

  // Control the servo based on the temperature
  if (t > tempThresholdHigh) {
    // Temperature too high, open water pump
    servoMotor.write(180);
  } else {
    // Temperature too low, close water pump
    servoMotor.write(0);
  }

  // Print the humidity and temperature to the LCD
  lcd.clear(); // Clear the LCD screen before printing new values
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(t);
  lcd.print((char)223); // Degree symbol
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("Hum: ");
  lcd.print(h);
  lcd.print("%");
  
  delay(2000); // Delay before next reading
}


/*
#include <Wire.h>
#include <DHT.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>

// Initialize the DHT sensor
#define DHTPIN 2    // what digital pin we're connected to
#define DHTTYPE DHT22   // DHT 22
DHT dht(DHTPIN, DHTTYPE);

// Initialize the servo
Servo servoMotor;
const int servoPin = 9;

// Set the temperature thresholds
const float tempThresholdHigh = 30.0; // Temperature to open water pump (high threshold)
const float tempThresholdLow = 25.0;  // Temperature to close water pump (low threshold)

// Map temperature range to servo angle range
const int servoAngleLowTemp = 0;      // Servo angle for low temperature
const int servoAngleHighTemp = 180;    // Servo angle for high temperature

// Initialize the LCD for I2C
LiquidCrystal_I2C lcd(0x27, 16, 2);    // Set the LCD I2C address

void setup() {
  // Start the DHT sensor
  dht.begin();
  // Start the servo and attach it to its pin
  servoMotor.attach(servoPin);
  // Initialize the LCD
  lcd.init();
  // Turn on the backlight.
  lcd.backlight();
}

void loop() {
  // Read the humidity and temperature
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Check if any reads failed
  if (isnan(h) || isnan(t)) {
    lcd.print("Failed to read from DHT sensor!");
    return;
  }

  // Map the temperature to servo angle
  int servoAngle = map(t, tempThresholdLow, tempThresholdHigh, servoAngleLowTemp, servoAngleHighTemp);

  // Control the servo based on the temperature
  servoMotor.write(servoAngle);

  // Print the humidity and temperature to the LCD
  lcd.clear(); // Clear the LCD screen before printing new values
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(t);
  lcd.print((char)223); // Degree symbol
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("Hum: ");
  lcd.print(h);
  lcd.print("%");

  delay(2000); // Delay before next reading
}*/