code behind

using Windows.Devices.Enumeration;

using Windows.Devices.I2c;

using System.Diagnostics;

using System.Threading;

….

public sealed partial class MainPage : Page

{

private I2cDevice Device;

private Timer periodicTimer;

public MainPage()

{

this.InitializeComponent();

initcomunica();

}

 

private async void initcomunica()

{

var settings = new I2cConnectionSettings(0x40); // Arduino address

settings.BusSpeed = I2cBusSpeed.StandardMode;

string aqs = I2cDevice.GetDeviceSelector(“I2C1″);

var dis = await DeviceInformation.FindAllAsync(aqs);

Device = await I2cDevice.FromIdAsync(dis[0].Id, settings);

periodicTimer = new Timer(this.TimerCallback, null, 0, 100); // Create a timmer

}

private void TimerCallback(object state)

{

byte[] RegAddrBuf = new byte[] { 0x40 };

byte[] ReadBuf = new byte[5];

try

{

Device.Read(ReadBuf); // read the data

}

catch (Exception f)

{

Debug.WriteLine(f.Message);

}

char[] cArray = System.Text.Encoding.UTF8.GetString(ReadBuf, 0, 5).ToCharArray();  // Converte  Byte to Char

String c = new String(cArray);

Debug.WriteLine(c);

// refresh the screen, note Im using a textbock @ UI

var task = this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>

{ temperatura.Text = c; });

}