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

// Data wire is connected to ESP15
#define ONE_WIRE_BUS 15

// 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);

void setup() {
  // Start serial communication for debugging
  Serial.begin(9600);
  
  // Start up the library
  sensors.begin();
}

void loop() {
  // Request temperature measurement
  sensors.requestTemperatures(); 
  
  // Fetch temperature in Celsius
  float temperatureC = sensors.getTempCByIndex(0);
  
  // Check if the reading is valid
  if (temperatureC != DEVICE_DISCONNECTED_C) {
    // Print the temperature to the Serial Monitor
    Serial.print("Temperature: ");
    Serial.print(temperatureC);
    Serial.println(" °C");
  } else {
    Serial.println("Error: Could not read temperature data");
  }
  
  // Wait 1 second before repeating
  delay(1000);
}