Task<ControlClient> ConnectAsync (IAdapter adapter)
{
var tcs = new TaskCompletionSource<ControlClient> ();
adapter.DeviceDiscovered += (object sender, DeviceDiscoveredEventArgs e) => {
Device.BeginInvokeOnMainThread(async () => {
// Look for a specific device
if (e.Device.ID.ToString ().StartsWith ("af18", StringComparison.OrdinalIgnoreCase)) {
// Connect to the device
await adapter.ConnectAsync (e.Device);
// Establish the control client
using (var stream = new LEStream (e.Device)) {
var client = new ControlClient (stream);
client.RunAsync (CancellationToken.None); // Don't await to run in background
tcs.SetResult (client);
}
// Update the UI
connectLabel.Text = "Yay " + e.Device + "!";
}
});
};
adapter.StartScanningForDevices();
return tcs.Task;
}
async Task RunControlAsync ()
{
var cts = new CancellationTokenSource ();
try {
var device = await ConnectAsync ();
using (var s = new LEStream (device)) {
client = new ControlClient (s);
variablesList.ItemsSource = client.Variables;
commandsList.ItemsSource = client.Commands;
await client.RunAsync (cts.Token);
}
} catch (Exception ex) {
Debug.WriteLine ("Stream failed");
Debug.WriteLine (ex);
} finally {
client = null;
}
}