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

// Data wire is conntec to the Arduino digital pin 23
#define ONE_WIRE_BUS 23

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

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

const int trigPin = 53;
const int echoPin = 50;
long duration;
int distance;

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  // Init
  lcd.init();
  lcd.backlight();

  // Print something
  lcd.setCursor(0, 0);
  lcd.print("Hello, world!");
  //lcd.setCursor(2, 1);
  //lcd.print("Wokwi Online IoT");
  //lcd.setCursor(5, 2);
  //lcd.print("Simulator");
  //lcd.setCursor(7, 3);
  //lcd.print("Enjoy!");

  // put your setup code here, to run once:
  /*pinMode(13, OUTPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  // Start serial communication for debugging purposes
  Serial.begin(9600);

  // Start up the library
  sensors.begin();*/
}

void loop() {
  // put your main code here, to run repeatedly:
  // turn light on
  digitalWrite(13, HIGH);

  // Ultrasonic Sensor START
  //digitalWrite(trigPin, LOW);
  //delay(5);
  
  digitalWrite(trigPin, HIGH);
  digitalWrite(trigPin, LOW);

  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);

  // Calculating the distance
  distance = duration * 0.034 / 2;

  // Prints the distance on the Serial Monitor
  Serial.print("Distance: ");
  Serial.println(distance);
  // Ultrasonic Sensor END

  // Temperature Sensor START
  // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
  sensors.requestTemperatures();

  Serial.print("Celsius temperature: ");
  // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
  Serial.println(sensors.getTempCByIndex(0));
  //delay(1000);
  // Temperature Sensor END
  
  delay(500);

  digitalWrite(13, LOW);
  delay(500);
}