natsupyhw_ds18b20.ino

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

#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup()
{
  Serial.begin(9600);
  Serial.println(F("NatsuPy DS18B20 Demo!"));

  sensors.begin();
}

void loop()
{
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);

  if (tempC == DEVICE_DISCONNECTED_C)
  {
    return;
  }

  Serial.println(tempC);
  delay(500);
}