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

// I2C LCD address and dimensions
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Address 0x27 or 0x3F

// DS18B20 Temperature Sensor pin
#define ONE_WIRE_BUS 15 // GPIO 34

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass the oneWire reference to Dallas Temperature sensor
DallasTemperature sensors(&oneWire);

void setup() {
  // Start Serial Monitor for debugging
  Serial.begin(115200);

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

  // Start up the temperature sensor library
  sensors.begin();

  // Display initialization message
  lcd.setCursor(0, 0);
  lcd.print("Temperature Init");
  delay(2000);  // Wait for 2 seconds

  lcd.clear();  // Clear the LCD for the next display
}

void loop() {
  // Request temperature from the sensor
  sensors.requestTemperatures();
  
  // Get the temperature in Celsius
  float temperatureC = sensors.getTempCByIndex(0);

  // Display the temperature on the LCD
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperatureC);
  lcd.print(" C");

  // Optional: Debugging output to Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" C");

  // Wait for 1 second before the next reading
  delay(1000);
}