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

#define ONE_WIRE_BUS 4                // Data wire is plugged into port 4 on the Arduino
OneWire oneWire(ONE_WIRE_BUS);        // Setup a oneWire instance to communicate with any OneWire devices
DallasTemperature sensors(&oneWire);  // Pass our oneWire reference to Dallas Temperature. 

int numberOfDevices;                  // Number of temperature devices found
DeviceAddress tempDeviceAddress;      // We'll use this variable to store a found device address

void setup() {
  Serial.begin(9600);
  sensors.begin();                              // Start up the library
  numberOfDevices = sensors.getDeviceCount();   // Grab a count of devices on the wire
  
  // locate devices on the bus
  Serial.print("Locating devices...");
  Serial.print("Found ");
  Serial.print(numberOfDevices, DEC);
  Serial.println(" devices.");

  // Loop through each device, print out address
  for(int i=0;i<numberOfDevices; i++) {
    // Search the wire for address
    if(sensors.getAddress(tempDeviceAddress, i)) {
      Serial.print("Found device ");
      Serial.print(i, DEC);
      Serial.print(" with address: ");
      printAddress(tempDeviceAddress);
      Serial.println();
    } else {
      Serial.print("Found ghost device at ");
      Serial.print(i, DEC);
      Serial.print(" but could not detect address. Check power and cabling");
    }
  }
}

void loop() { 
  sensors.requestTemperatures();      // Send the command to get temperatures
  
  // Loop through each device, print out temperature data
  for(int i=0;i<numberOfDevices; i++) {
    // Search the wire for address
    if(sensors.getAddress(tempDeviceAddress, i)){
    
    // Output the device ID
    Serial.print("Temperature for device: ");
    Serial.println(i,DEC);

    // Print the data
    float tempC = sensors.getTempC(tempDeviceAddress);
    Serial.print("Temp C: ");
    Serial.print(tempC);
//    Serial.print(" Temp F: ");
//    Serial.println(DallasTemperature::toFahrenheit(tempC)); // Converts tempC to Fahrenheit
    }   
  }
  delay(5000);
}

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