// DS18B20 Temperature Sensor using ESP32
/*
i. -55 to 125
ii Uses 1 Wire Communication (1 data line (must be pulled HIGH) and 1 gnd wire)
iii. user configurable resolution between 9 to 12-bits
iv. 64-bit Serial Code whihc is unique to each sensor

GND, DQ (must be pulled HIGH), VDD
*/
#include <DallasTemperature.h>
#include <OneWire.h>

// GPIO where the DS18B20 is connected to
const int oneWireBus = TX;     

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

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


void setup() {
  // put your setup code here, to run once:
  Serial.begin (115200);
  sensor.begin ();
}

void loop() {
  // put your main code here, to run repeatedly:
  sensor.requestTemperatures ();
  float temp = sensor.getTempCByIndex (0);
  Serial.print ("Temperature: ");
  Serial.print (temp);
  Serial.println ("ºC");
  delay (3000);
}