nodemecu/0x01-temperatura/0x01-temperatura.ino

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

// Pin donde se conecta el bus 1-Wire
const int pinDatosDQ = 2;

// Instancia a las clases OneWire y DallasTemperature
OneWire oneWireObjeto(pinDatosDQ);
DallasTemperature sensorDS18B20(&oneWireObjeto);


// Dispositivo
const int devID = 1;
char devIDstr[5];
int inQuery;




float getData() {

  sensorDS18B20.requestTemperatures();
  return (sensorDS18B20.getTempCByIndex(0));
}


void setup() {
  Serial.begin(9600);
  sensorDS18B20.begin();




}
void loop() {






  if ( Serial.available() > 0) {
    inQuery = Serial.read();
    if ( inQuery == devID) {

      Serial.write(itoa(devID, devIDstr, 10));
      Serial.write(" ");
      Serial.write("T");
      Serial.write(" ");

      
      char lecturaStr[6]; // Buffer big enough for 7-character float
      dtostrf(getData(), 2, 4, lecturaStr); // Leave room for too large numbers!


      Serial.write(lecturaStr);
      Serial.write(" ");
      Serial.write("C");
      Serial.write(" ");
      Serial.write("99");


    }

  }

}