/* DS18B20 1-Wire digital temperature sensor with 16x2 I2C LCD and Arduino example code. More info: https://www.makerguides.com */

// Include the required Arduino libraries:
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>

// Define to which pin of the Arduino the 1-Wire bus is connected:
#define ONE_WIRE_BUS 2

const int buzzer = 9; //buzzer to arduino pin 9

// Create a new instance of the oneWire class to communicate with any OneWire device:
OneWire oneWire(ONE_WIRE_BUS);

// Pass the oneWire reference to DallasTemperature library:
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27, 16, 2);


// Degree symbol:
byte Degree[] = {
  B00111,
  B00101,
  B00111,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000
};

void setup() {
  // Start up the library:
  sensors.begin();
  // Start the LCD and turn on the backlight:
  lcd.init();
  lcd.backlight();
  // Create a custom character:
  lcd.createChar(0, Degree);
   pinMode(buzzer, OUTPUT); // Set buzzer - pin 9 as an output

}

void loop() {
  // Send the command for all devices on the bus to perform a temperature conversion:
  sensors.requestTemperatures();

  // Fetch the temperature in degrees Celsius for device index:
  float tempC = sensors.getTempCByIndex(0); // the index 0 refers to the first device

  // Print the temperature on the LCD;
  lcd.setCursor(0,1);
  lcd.print(tempC);
  lcd.write(0); // print the custom character
  lcd.print("C");

  // Wait 1 second:
  delay(1000);
if (tempC >= 33){
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Hyperthermia");
   lcd.setCursor(0,1);
  lcd.print(tempC);
  lcd.write(0); // print the custom character
  lcd.print("C"); 
  tone(buzzer, 1000); // Send 1KHz sound signal...
  delay(1000);        // ...for 1 sec
  noTone(buzzer);     // Stop sound...
  delay(1000);        // ...for 1sec
  

}
if (tempC <= 33){
  lcd.clear();
    lcd.setCursor(0,0);
  lcd.print("Normal");
   lcd.setCursor(0,1);
  lcd.print(tempC);
  lcd.write(0); // print the custom character
  lcd.print("C");
  }
}