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

OneWire oneW(10);
DallasTemperature sens(&oneW);

String buff;

void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);
  sens.begin();

  Serial.println("Started");

}

void loop() {
  // put your main code here, to run repeatedly:

  if (Serial.available()){

    buff = Serial.readStringUntil('\n');
    if (buff == "REQ_TEMP"){
      sens.requestTemperatures();
      Serial.println(sens.getTempCByIndex(0));
    }
  }

}