DS18B20 Digital Temperature Sensor

#include <OneWire.h>            // Required for Dallas Temperature
#include <DallasTemperature.h>  // DS18B20 Library

// DS18B20
const int oneWireBus = 33;

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(oneWireBus);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature ds18b20Sensor(&oneWire);

void setup() {
  Serial.begin(115200);
  Serial.print("[setup] Temperature (x10): ");
  Serial.println(readDS18B20Sensor());
}

void loop() {
}

int16_t readDS18B20Sensor() {
  int16_t temperature = 0;
//  Serial.println("[readDS18B20Sensor] Read sensor...");
  ds18b20Sensor.requestTemperatures(); // Send the command to get temperatures
  
  // After we get the temperature(s), we can print it/them here.
  // We use the function ByIndex and get the temperature from the first sensor (there's only one at the moment).
//  Serial.println("[readDS18B20Sensor] Device 1 (index 0)");
  float sensorValue = ds18b20Sensor.getTempCByIndex(0);
//  Serial.print("[readDS18B20Sensor] Returned value: ");
//  Serial.println(sensorValue);

  temperature = (int) (10*(sensorValue + 0.05));  // °C x 10
//  Serial.print("[readDS18B20Sensor] Temperature: ");
//  Serial.println((float) temperature/10, 1);

  return temperature;
}

// Include the libraries we need
#include <OneWire.h>
#include <DallasTemperature.h>
//#include <ProMiniPins.h>
//#include <CubeCellPins.h>
#include <CubeCellV2Pins.h>
//#include <CubeCellPlusPins.h>
//#include <WiFiLoRa32V2.1Pins.h>

// Define Vext if necessary
//#define Vext 36

// Data wire GPIO
//#define ONE_WIRE_BUS GPIO1
#define ONE_WIRE_BUS A4a_A2
#define TEMPERATURE_PRECISION 9

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

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

// arrays to hold device addresses
DeviceAddress insideThermometer, outsideThermometer;

// Assign address manually. The addresses below will need to be changed
// to valid device addresses on your bus. Device address can be retrieved
// by using either oneWire.search(deviceAddress) or individually via
// sensors.getAddress(deviceAddress, index)
// DeviceAddress insideThermometer = { 0x28, 0x1D, 0x39, 0x31, 0x2, 0x0, 0x0, 0xF0 };
// DeviceAddress outsideThermometer   = { 0x28, 0x3F, 0x1C, 0x31, 0x2, 0x0, 0x0, 0x2 };

void setup(void)
{
  // start serial port
  Serial.begin(115200);
  pinMode(Vext, OUTPUT);    // Vext pin
  digitalWrite(Vext, LOW);  // Vext ON
  Serial.println("Dallas Temperature IC Control Library Demo");

  Serial.print("Processor Architecture : ");
  #if defined(__ASR_Arduino__)
    Serial.println("ASR Arduino");
  #else
    Serial.println("Unrecognised");
  #endif

  Serial.print("ARDUINO Index : ");
  #if ARDUINO >= 100
    Serial.println(">= 100");
  #else
    Serial.println("< 100");
  #endif

  // Start up the library
  sensors.begin();

  // locate devices on the bus
  Serial.print("Locating devices...");
  Serial.print("Found ");
  Serial.print(sensors.getDeviceCount(), DEC);
  Serial.println(" devices.");

  // report parasite power requirements
  Serial.print("Parasite power is: ");
  if (sensors.isParasitePowerMode()) Serial.println("ON");
  else Serial.println("OFF");

  // Search for devices on the bus and assign based on an index. Ideally,
  // you would do this to initially discover addresses on the bus and then
  // use those addresses and manually assign them (see above) once you know
  // the devices on your bus (and assuming they don't change).
  //
  // method 1: by index
  if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0");
  if (!sensors.getAddress(outsideThermometer, 1)) Serial.println("Unable to find address for Device 1");

  // method 2: search()
  // search() looks for the next device. Returns 1 if a new address has been
  // returned. A zero might mean that the bus is shorted, there are no devices,
  // or you have already retrieved all of them. It might be a good idea to
  // check the CRC to make sure you didn't get garbage. The order is
  // deterministic. You will always get the same devices in the same order
  //
  // Must be called before search()
  //oneWire.reset_search();
  // assigns the first address found to insideThermometer
  //if (!oneWire.search(insideThermometer)) Serial.println("Unable to find address for insideThermometer");
  // assigns the seconds address found to outsideThermometer
  //if (!oneWire.search(outsideThermometer)) Serial.println("Unable to find address for outsideThermometer");

  // show the addresses we found on the bus
  Serial.print("Device 0 Address: ");
  printAddress(insideThermometer);
  Serial.println();

  Serial.print("Device 1 Address: ");
  printAddress(outsideThermometer);
  Serial.println();

  // set the resolution to 9 bit per device
  sensors.setResolution(insideThermometer, TEMPERATURE_PRECISION);
  sensors.setResolution(outsideThermometer, TEMPERATURE_PRECISION);

  Serial.print("Device 0 Resolution: ");
  Serial.print(sensors.getResolution(insideThermometer), DEC);
  Serial.println();

  Serial.print("Device 1 Resolution: ");
  Serial.print(sensors.getResolution(outsideThermometer), DEC);
  Serial.println();
}

// function to print a device address
void printAddress(DeviceAddress deviceAddress)
{
  for (uint8_t i = 0; i < 8; i++)
  {
    // zero pad the address if necessary
    if (deviceAddress[i] < 16) Serial.print("0");
    Serial.print(deviceAddress[i], HEX);
  }
}

// function to print the temperature for a device
void printTemperature(DeviceAddress deviceAddress)
{
  float tempC = sensors.getTempC(deviceAddress);
  if(tempC == DEVICE_DISCONNECTED_C) 
  {
    Serial.println("Error: Could not read temperature data");
    return;
  }
  Serial.print("Temp C: ");
  Serial.print(tempC);
  Serial.print(" Temp F: ");
  Serial.print(DallasTemperature::toFahrenheit(tempC));
}

// function to print a device's resolution
void printResolution(DeviceAddress deviceAddress)
{
  Serial.print("Resolution: ");
  Serial.print(sensors.getResolution(deviceAddress));
  Serial.println();
}

// main function to print information about a device
void printData(DeviceAddress deviceAddress)
{
  Serial.print("Device Address: ");
  printAddress(deviceAddress);
  Serial.print(" ");
  printTemperature(deviceAddress);
  Serial.println();
}

/*
   Main function, calls the temperatures in a loop.
*/
void loop(void)
{
  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures();
  Serial.println("DONE");

  // print the device information
  printData(insideThermometer);
  printData(outsideThermometer);
  delay(1000);
}