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

// Data wire is plugged into digital pin 2 on the Arduino
#define ONE_WIRE_BUS 6

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

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

// I2C address 0x27, 16 column and 2 rows
LiquidCrystal_I2C lcd(0x27, 16, 2); 

const int Btn1 = 3;
const int LED = 5;
const int BZR = 4;
volatile bool RESET1 = false;

void RESET(){
RESET1= true;
}

void setup(void)
{
  sensors.begin();	// Start up the library
  Serial.begin(9600);
  lcd.init(); // initialize the lcd
  lcd.backlight();
  pinMode(Btn1, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  pinMode(BZR, OUTPUT);
  attachInterrupt(digitalPinToInterrupt(Btn1),RESET,CHANGE);
}

void loop(void)
{ 
  digitalWrite(LED, LOW);
  digitalWrite(BZR, LOW);
  lcd.clear();  // clear display

  // Send the command to get temperatures
  sensors.requestTemperatures(); 
  if(sensors.getTempCByIndex(0) >= 35.00){
    digitalWrite(LED, HIGH);
    if(RESET1){
      digitalWrite(BZR, LOW);
    }
    else{
      digitalWrite(BZR, HIGH);
    }

    lcd.setCursor(0, 0);         // move cursor to   (0, 0)
	  lcd.print("Temp.: ");
	  lcd.print(sensors.getTempCByIndex(0));
	  lcd.print((char)223);	//shows degrees character
	  lcd.print("C");

    lcd.setCursor(4,1);
	  lcd.print("WARNING!!! ");
    delay(1000);                 // display the above for 1 second

    //print the temperature in Celsius
    Serial.print("Temperature: ");
    Serial.print(sensors.getTempCByIndex(0));
    Serial.print((char)176);//shows degrees character
    Serial.print("C  |  ");
    Serial.println("WARNING");
  }
 
  else{
  lcd.setCursor(0, 0);         // move cursor to   (0, 0)
	lcd.print("Temp.: ");
	lcd.print(sensors.getTempCByIndex(0));
	lcd.print((char)223);	//shows degrees character
	lcd.print("C");

	lcd.setCursor(0,1);
	lcd.print("Fhrt.: ");
	lcd.print((sensors.getTempCByIndex(0) * 9.0) / 5.0 + 32.0);
	lcd.print((char)223);	//shows degrees character
	lcd.print("F");
  delay(1000);                 // display the above for 1 second
 
  //print the temperature in Celsius
  Serial.print("Temperature: ");
  Serial.print(sensors.getTempCByIndex(0));
  Serial.print((char)176);//shows degrees character
  Serial.print("C  |  ");
  
  //print the temperature in Fahrenheit
  Serial.print((sensors.getTempCByIndex(0) * 9.0) / 5.0 + 32.0);
  Serial.print((char)176);//shows degrees character
  Serial.println("F");
  //delay(500);
  }
}