protected override async void OnAppearing()
{
base.OnAppearing();
if (Device.RuntimePlatform == "Android")
{
DependencyService.Get <IKeyboardHelper>().HideKeyboard();
}
var systemDevices = adapter.GetSystemConnectedOrPairedDevices();
foreach (var device in systemDevices)
{
await adapter.ConnectToDeviceAsync(device);
}
}
private async void Connect_Clicked()
{
//Метод для подключения к устройству. Поскольку GUID сервисов
//и харрактеристик для устройств на базе CC2541 одинаковые,
//можно не выполнять их глобальный поиск по дискрипторам и свойствам
if (device != null)
{
try
{
await adapter.ConnectToDeviceAsync(device);
service = await device.GetServiceAsync(Guid.Parse("0000ffe0-0000-1000-8000-00805f9b34fb"));
characteristic = await service.GetCharacteristicAsync(Guid.Parse("0000ffe1-0000-1000-8000-00805f9b34fb"));
await DisplayAlert(null, "Соединение успешно", "ОК");
IsConnected = true;
}
catch (DeviceConnectionException ex)
{
await DisplayAlert("Ошибка!", "Не удалось соединится" + ex.Message, "ОК");
}
}
else
{
await DisplayAlert("Ошибка!", "Выберете устройство для соединения", "ОК");
}
}
private void AddOrUpdateDevice(IDevice device)
{
Xamarin.Essentials.MainThread.BeginInvokeOnMainThread(async() =>
{
if (device.Name == "SH-HC-08")
{
IService uartService = null;
ICharacteristic uartChar = null;
TargetDevice = device;
try
{
await BleAdapter.ConnectToDeviceAsync(TargetDevice);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
try
{
var services = await TargetDevice.GetServicesAsync();
foreach (var s in services)
{
Console.WriteLine(s.Id + " " + s.Name);
}
uartService = await TargetDevice.GetServiceAsync(Guid.Parse("0000ffe0-0000-1000-8000-00805F9B34FB"));
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
try
{
var chars = await uartService.GetCharacteristicsAsync();
foreach (var s in chars)
{
Console.WriteLine(s.Id + " " + s.Name);
}
uartChar = await uartService.GetCharacteristicAsync(Guid.Parse("0000ffe1-0000-1000-8000-00805F9B34FB"));
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (uartChar == null)
{
Console.WriteLine("Char is null");
return;
}
try
{
uartChar.ValueUpdated += ValueUpdated;
await uartChar.StartUpdatesAsync();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
});
}
/*
* Como la impresora ya esta configurada se conecta solo a la impresora
*/
public async void Autoconexion(IDevice impBT)
{
await adaptador.StopScanningForDevicesAsync();
try
{
// Estas lineas conectan el dispositivo e imprimen el parte;
var parameters = new ConnectParameters(forceBleTransport: true);
await adaptador.ConnectToDeviceAsync(impBT, parameters);
Lista.Clear();
Lista.Add(dispositivo);
bool imprimir = true; // IMPORTANTE Este booleano permite imprimir a la impresora
Imprimir(imprimir);
}
catch (DeviceConnectionException e)
{
Console.WriteLine(e.Message);
await Application.Current.MainPage.DisplayAlert("Aviso", "No es posible conectarse a la impresora", "OK");
popupLoadingView.IsVisible = false;
activityIndicator.IsRunning = false;
btnImprimir.IsEnabled = true;
}
}
/// <summary>
/// FOUND BLUETOOTH - SELECT ITEM IN THE LISTVIEW, THEN SEND THE SELECTED FILE
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void FoundBluetoothDevicesListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
//IDevice selectedItem = e.SelectedItem as IDevice;
//MainPage selectedFile = new MainPage(); //'selectedFile' es la var que toma de la clase Main
//PickedFile.PickedFile_Selected = selectedFile.SelectedFile(); //Dentro de Main class se encuentra este metodo
if (selectedDevice.State == Plugin.BLE.Abstractions.DeviceState.Connected) //If the Client is already connected
{
await PickAndSendFile(PickedFile.PickedFile_Selected); //Send the selected file
//await Navigation.PushAsync(new BluetoothDataPage(selectedItem));
}
else //If it's not connected yet
{
try
{
await _bluetoothAdapter.ConnectToDeviceAsync(selectedDevice); //Connect to the selected device
if (selectedDevice.State == Plugin.BLE.Abstractions.DeviceState.Connected)
{
await IsConnected(PickedFile.PickedFile_Selected); //Sends a confirmation message if it's connected
await PickAndSendFile(PickedFile.PickedFile_Selected); //And then send the selected file
}
}
catch
{
// ... could not connect to device
//Idea for improvement : A message box saying "Could not connect to the selected device, try again"
}
}
}
protected async void TryConnect()
{
if (_device != null)
{
IsConnectEnabled = false;
OnPropertyChanged(nameof(IsConnectEnabled));
UserDialogs.Instance.ShowLoading("Connecting to device");
try
{
await _bluetoothAdapter.ConnectToDeviceAsync(_device);
}
catch (DeviceConnectionException ex)
{
UserDialogs.Instance.ShowError("Could not connect to the Device! Error: " + ex.Message.ToString());
}
catch (Exception ex)
{
UserDialogs.Instance.ShowError("Could not connect to the Device! Error: " + ex.Message.ToString());
}
UserDialogs.Instance.HideLoading();
}
}
private async void DevicesList_OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
device = DevicesList.SelectedItem as IDevice;
var result = await DisplayAlert("AVISO", "Deseja se conectar a esse dispositivo?", "Conectar", "Cancelar");
if (!result)
{
return;
}
//Stop Scanner
await adapter.StopScanningForDevicesAsync();
try
{
await adapter.ConnectToDeviceAsync(device);
await DisplayAlert("Conectado", "Status:" + device.State, "OK");
}
catch (DeviceConnectionException ex)
{
await DisplayAlert("Erro", ex.Message, "OK");
}
}
async void DevicesList_OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
var devicesListed = (ListView)sender;
device = devicesListed.SelectedItem as IDevice;
var result = await DisplayAlert(" WARNING ", " Do you want to connect to this device? ", " Connect ", " Cancel ");
//texxt.Text = texxt.Text +"hi";
if (!result)
{
//texxt.Text = texxt.Text + "hi2";
return;
}
// Stop Scanner
await adapter.StopScanningForDevicesAsync();
try
{
await adapter.ConnectToDeviceAsync(device);
await DisplayAlert(" Connected ", " Status: " + device.State, " OK ");
btnGetServices_Clicked();
}
catch (DeviceConnectionException ex)
{
await DisplayAlert(" Error ", ex.Message, " OK ");
}
texxt.Text = device.State.ToString();
}
public async Task <ObservableCollection <IDevice> > ListarDispositivos(IAdapter adapter)
{
ObservableCollection <IDevice> deviceList = new ObservableCollection <IDevice>();
adapter.DeviceDiscovered += (s, a) => deviceList.Add(a.Device);
//adapter.ScanMode = ScanMode.LowLatency;
adapter.ConnectedDevices.Clear();
await adapter.StopScanningForDevicesAsync();
await adapter.StartScanningForDevicesAsync();
try
{
Debug.WriteLine("STAGUS: " + adapter.ScanMode);
Debug.WriteLine("DISPOSITIVOS ENCONTRADOS: " + deviceList.Count);
await adapter.ConnectToDeviceAsync(deviceList[0]);
}
catch (System.Exception e)
{
Debug.WriteLine(e.Message);
}
return(deviceList);
}
private async void DevicesList_OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
device = DevicesList.SelectedItem as IDevice;
var result = await DisplayAlert("WARNING", "Are you sure you want to connect to this device?", "Connect", "Cancel");
if (!result)
{
return;
}
// Stop Scanner
await adapter.StopScanningForDevicesAsync();
try
{
await adapter.ConnectToDeviceAsync(device);
await DisplayAlert("Connection", "Status: " + device.State, " OK ");
if (device.State == Plugin.BLE.Abstractions.DeviceState.Connected)
{
ConnectedDevice.globalDevice = device;
await Application.Current.MainPage.Navigation.PopModalAsync(true);
}
}
catch (DeviceConnectionException ex)
{
await DisplayAlert(" Error ", ex.Message, " OK ");
}
}
public async void lv_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
GlobalVariables.device = lv.SelectedItem as IDevice;
if (GlobalVariables.device != null)
{
try
{
//Connecteren met de device
await adapter.ConnectToDeviceAsync(GlobalVariables.device);
GlobalVariables.connection = true;
lblSoleStatus.Text = "Connected";
await this.DisplayAlert("Succesfully connected", "You are connected!", "OK");
//lv.SelectedItem = null;
}
catch (DeviceConnectionException)
{
// //Could not connect to device
GlobalVariables.connection = false;
await this.DisplayAlert("Bluetooth Error", "Failed to connect", "OK");
//lv.SelectedItem = null;
}
catch (Exception)
{
GlobalVariables.connection = false;
await this.DisplayAlert("Error", "Something went wrong", "OK");
//lv.SelectedItem = null;
}
}
}
//------------------------------------------------------------
async void connect()
{
try
{
if (device != null)
{
await adapter.ConnectToDeviceAsync(device);
// Status_label.Text = "Connected. ";
Status_label.Text = "Selected Device: " + Environment.NewLine +
device.Id.ToString() + Environment.NewLine +
device.Name.ToString() + Environment.NewLine +
device.NativeDevice.ToString() + Environment.NewLine +
device.Rssi.ToString() + Environment.NewLine +
device.State.ToString() + Environment.NewLine;
// await adapter.DisconnectDeviceAsync(device); //disconnection command
}
else
{
Status_label.Text = "Status: Conected" + device.Id.ToString();
//await DisplayAlert("Notice", "No Device selected!", "OK");
}
}
catch (DeviceConnectionException ex)
{
//Could not connect to the device
await DisplayAlert("Error!", ex.Message.ToString(), "OK");
}
}
private async void BtnConnect_Clicked(object sender, EventArgs a)
{
if (device != null)
{
try
{
await adapter.ConnectToDeviceAsync(device);
//await _adapter.ConnectToKnownDeviceAsync(guid, cancellationToken);
//await DisplayAlert("Connected", "Status:" + device.State, "Accept");
txtBle.Text = device.State.ToString() + " (" + device.Name.ToString() + ") : " + device.Id;
btnGetServices.IsEnabled = true;
btnGetCharacteristics.IsEnabled = true;
dimSlider.IsEnabled = true;
btnReadCharacteristics.IsEnabled = true;
btnWriteOffCharacteristics.IsEnabled = true;
btnWriteOnCharacteristics.IsEnabled = true;
btnDisconnect.IsEnabled = true;
}
catch (DeviceConnectionException ex)
{
// ... could not connect to device
await DisplayAlert("Error", ex.Message.ToString(), "Accept");
}
}
else
{
await DisplayAlert("Warning", "No device selected !", "Accept");
}
}
async void btlist_ItemSelected(System.Object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
if (e.SelectedItem == null)
{
return;
}
IDevice selecteddevice = e.SelectedItem as IDevice;
((ListView)sender).SelectedItem = null;
Console.WriteLine("seleted is " + selecteddevice.Name);
try
{
await adapter.ConnectToDeviceAsync(selecteddevice);
Console.WriteLine("Connect to " + selecteddevice.Name + " successfully!");
await DisplayAlert("Successful", "Connect to " + selecteddevice.Name + " successfully!", "Perfect!");
dataviewmodel.record_device(selecteddevice);
}
catch (DeviceConnectionException)
{
try
{
await adapter.ConnectToKnownDeviceAsync(new Guid("guid"));
//Console.WriteLine(selecteddevice.Name + " is already connected");
//await DisplayAlert("Successful", selecteddevice.Name + " is already connected", "Perfect!");
}
catch (DeviceConnectionException)
{
await DisplayAlert("Error", "Cant connet to that device", "OK");
}
}
}
async void ListView1_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
var device = e.SelectedItem as IDevice;
if (device == null)
{
return;
}
try
{
await _Adapter.ConnectToDeviceAsync(device);
if (device.State == DeviceState.Disconnected)
{
await DisplayAlert("PluginBleTest", "Do Not Connect", "OK");
return;
}
if (device.State == DeviceState.Connected || device.State == DeviceState.Limited)
{
await Navigation.PushAsync(new ServicesPage(device));
}
}
catch (DeviceConnectionException ex)
{
Debug.WriteLine(ex.StackTrace);
await DisplayAlert("PluginBleTest", "Do Not Connect", "OK");
}
finally
{
ListView1.SelectedItem = null;
}
}
public async Task <bool> ConnectDeviceAsync(BLEDevice device)
{
try
{
CancellationTokenSource tokenSource = new CancellationTokenSource();
System.Diagnostics.Debug.WriteLine("Connecting to " + device.Name);
await _adapterInstance.ConnectToDeviceAsync(device.Device, new ConnectParameters(autoConnect : true, forceBleTransport : false), tokenSource.Token);
System.Diagnostics.Debug.WriteLine("Connected to " + device.Name);
_findMeConnected = device;
// Send message
MessagingCenter.Send <BLEService>(this, "deviceConnected");
return(true);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Connection error " + ex.Message);
return(false);
}
}
/// <summary>
/// Подключение к устройству
/// </summary>
/// <param name="device">Блутус устройство</param>
/// <returns>Результат подключения</returns>
public async Task <bool> ConnectAsync(IDevice device)
{
if (device == null)
{
return(false);
}
if (!_adapter.IsScanning)
{
await _adapter.StopScanningForDevicesAsync();
}
try
{
await _adapter.ConnectToDeviceAsync(device);
return(true);
}
catch (DeviceConnectionException ex)
{
//Debug.WriteLine($"BleService: connection exception {ex}");
}
catch (Exception ex)
{
//Debug.WriteLine($"BleService: generic exception {ex}");
}
return(await Task.FromResult(false));
}
//public BluetoothViewModel(INavigationService navigationService, IAdapter btAdapter) //INavigationService navigationService, IAdapter //btAdapter
//{
//
// _navigationService = navigationService;
// _btAdapter = btAdapter;
// _btAdapter.DeviceDiscovered += OnDeviceDiscovered;
// //tapCommand = new DelegateCommand(OnButtonTapped);
//}
private async void OnDeviceDiscovered(object sender, DeviceEventArgs e)
{
if (!string.IsNullOrWhiteSpace(e.Device.Name) && e.Device.Name.Contains("MLT-BT05"))
{
_btDevice = e.Device;
StatusText = "Connecting...";
try
{
await _btAdapter.ConnectToDeviceAsync(_btDevice);
}
catch (DeviceConnectionException exeption)
{
await Application.Current.MainPage.DisplayAlert("Alert", "Could not connect to bluetooth\nError: " + exeption, "OK");
}
catch (Exception exeption)
{
await Application.Current.MainPage.DisplayAlert("Alert", "Could not connect to bluetooth\nError: " + exeption, "OK");
}
NavigationParameters p = new NavigationParameters
{
{ "Device", _btDevice }
};
// _navigationService.NavigateAsync(new Uri(nameof(DeviceInfoView), UriKind.Relative), p);
}
}
private async void DevicesList_OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
App.Device = DevicesList.SelectedItem as IDevice;
var result = await DisplayAlert("AVISO", "Deseja se conectar a esse dispositivo?", "Conectar", "Cancelar");
if (!result)
{
return;
}
//Stop Scanner
await adapter.StopScanningForDevicesAsync();
try
{
await adapter.ConnectToDeviceAsync(App.Device);
await DisplayAlert("Conectado", "Status:" + App.Device.State, "OK");
System.Console.WriteLine("Connectado: " + BLEManager.connectedToDevice().ToString());
await BLEManager.SendMessageAsync("Hello from Xamarin!!!");
}
catch (DeviceConnectionException ex)
{
await DisplayAlert("Erro", ex.Message, "OK");
}
}
/// <summary>
/// Receives connection request from user-interface.
/// Check device bluetooth is on, attempt connection and register service and characteristics.
/// If successful, begin main communication menu algorithm.
/// </summary>
/// <param name="brace">Virtual BLE device containing data about remote physical device.</param>
public async Task Connect(IDevice device)
{
Brace = device;
try
{
Write("Connecting...");
// If connection successful, stop scanning for devices.
await adapter.StopScanningForDevicesAsync();
// Attempt connection to device
Device.BeginInvokeOnMainThread(async() =>
{
await adapter.ConnectToDeviceAsync(device);
});
}
catch (Exception e)
{
Device.BeginInvokeOnMainThread(async() =>
{
await Application.Current.MainPage.DisplayAlert("Connection failure.", e.Message, "OK");
});
return;
}
}
public async override void RowSelected(UITableView tableView, NSIndexPath indexPath)
{
if (adapter == null)
{
return;
}
try
{
if (deviceList[indexPath.Row].State == Plugin.BLE.Abstractions.DeviceState.Connected)
{
var device = deviceList[indexPath.Row];
navigation.launchViewController(device);
//await adapter.DisconnectDeviceAsync(device);
}
else
{
await adapter.ConnectToDeviceAsync(deviceList[indexPath.Row]);
}
}
catch (DeviceConnectionException e)
{
System.Diagnostics.Debug.WriteLine(e.Message);
}
}
private async void lv_ItemSelected(object sender, EventArgs e)
{
if (lv.SelectedItem == null)
{
await DisplayAlert("Notice", "No Device selected", "OK");
return;
}
else
{
selectedDevice = lv.SelectedItem as IDevice;
try
{
await adapter.ConnectToDeviceAsync(selectedDevice);
}
catch (DeviceConnectionException ex)
{
await DisplayAlert("Notice", "Error connecting to device!", "OK");
}
catch (ArgumentNullException ex)
{
await DisplayAlert("Notice", "Selected device is null!", "OK");
}
catch (Exception ex)
{
await DisplayAlert("Notice", "Unknown exception!", "OK");
}
}
}
public Task <IBleResult> TryConnectToDeviceAsync(IDevice device, bool connectWhenAvailable, CancellationToken cancellationToken)
{
_logger?.Log(LogSender, $"Trying to connect to device [DeviceName={device.Name},GUID={device.Id:D}]");
return(_bleAvailability.ExecuteWithBleAvailabilityCheckAsync(async() =>
{
IBleResult result;
_logger?.Log(LogSender, $"Internal connect to device started");
try
{
var connectParameters = new ConnectParameters(connectWhenAvailable);
await _bleAdapter.ConnectToDeviceAsync(device, connectParameters, cancellationToken);
result = device.State == DeviceState.Connected ? BleResult.Success() : BleResult.Failure(BleFailure.ConnectNotCompleted);
}
catch (TimeoutException)
{
result = BleResult.Failure(BleFailure.OperationTimeout);
}
catch (OperationCanceledException)
{
result = BleResult.Failure(BleFailure.OperationCancelled);
}
catch (Exception e)
{
result = BleResult.Failure(e);
}
_logger?.Log(LogSender, $"Internal connect to device completed with result: {result}");
return result;
}));
}
private async void FoundBluetoothDevicesListView_ItemTapped(object sender, ItemTappedEventArgs e)
{
// IsBusyIndicator.IsVisible = IsBusyIndicator.IsRunning = !(ScanButton.IsEnabled = false);
IDevice selectedItem = e.Item as IDevice;
//ScanButton.Text = "Rescan";
if (selectedItem.State == DeviceState.Connected)
{
await Navigation.PushAsync(new BluetoothDataPage(selectedItem));
}
else
{
try
{
var connectParameters = new ConnectParameters(false, true);
await _bluetoothAdapter.ConnectToDeviceAsync(selectedItem, connectParameters);
await Navigation.PushAsync(new BluetoothDataPage(selectedItem));
}
catch
{
await DisplayAlert("Error connecting", $"Error connecting to BLE device: {selectedItem.Name ?? "N/A"}", "Retry");
}
}
// IsBusyIndicator.IsVisible = IsBusyIndicator.IsRunning = !(ScanButton.IsEnabled = true);
}
public static async Task <bool> Test1(IDevice device, IAdapter adapter)
{
bool testResult = true;
try
{
await adapter.ConnectToDeviceAsync(device);
await Task.Delay(1500);
var searchServicesTask = device.GetServicesAsync();
if (await Task.WhenAny(Task.Delay(10000), searchServicesTask) != searchServicesTask)
{
return(false);
}
var services = await searchServicesTask;
testResult &= InsureServices(services);
if (!testResult)
{
return(false);
}
var movService = services.FirstOrDefault(x => x.Id == GuidCollection.MOVEMENT_SERV_UUID);
var chars = await movService.GetCharacteristicsAsync();
testResult &= InsureMovementServiceChars(chars);
if (!testResult)
{
return(false);
}
var output = chars.FirstOrDefault(x => x.Id == GuidCollection.MOVEMENT_UID_UUID);
var outputResult = await output.ReadAsync();
testResult &= outputResult.Length == 0;
if (!testResult)
{
return(false);
}
var passChar = chars.FirstOrDefault(x => x.Id == GuidCollection.MOVEMENT_PASS_UUID);
testResult &= await passChar.WriteAsync(_defaultPassBytes);
if (!testResult)
{
return(false);
}
outputResult = await output.ReadAsync();
testResult &= outputResult.Length != 0;
}
catch (Exception ex)
{
testResult = false;
}
finally
{
adapter.DisconnectDeviceAsync(device);
}
return(testResult);
}
public void Connect(IDeviceBLE pInput)
{
if (pInput == null)
{
return;
}
var inputType = pInput.GetType();
var searchType = typeof(UnPairedDeviceBLE);
Device = null;
if (inputType == searchType)
{
//Pair if the device is able to pair
AcceptRescan = false;
ConnectingDevice = pInput;
Debug.WriteLine("Connecting to new device.");
mAdapter.ConnectToDeviceAsync((ConnectingDevice as UnPairedDeviceBLE).mDevice).ContinueWith(StopScanning);
}
}
async void OnCollectionViewSelectionChanged(object sender, SelectionChangedEventArgs e)
{
var currentDevice = e.CurrentSelection.FirstOrDefault() as IDevice;
try {
await Adapter.ConnectToDeviceAsync(currentDevice);
await DisplayAlert("Conectado", $"Status {currentDevice.State}", "Ok");
} catch (Exception ex) {
Debug.WriteLine(ex);
}
}
/// <summary>
/// Connect to a Go+ device.
/// </summary>
/// <param name="device">Go+ to connect.</param>
public async Task ConnectDevice(GoPlus device)
{
if (device == null)
{
throw new ArgumentNullException("device");
}
if (!_devicesFound.ContainsKey(device))
{
throw new ArgumentException("This device does not exist in discovered devices");
}
// There should only be one connection at a time.
foreach (IDevice connectedDevice in _adapter.ConnectedDevices)
{
_logger.Log("Connected device already exists! Disconnecting.", Category.Info, Priority.None);
await _adapter.DisconnectDeviceAsync(connectedDevice);
}
_charCache.Clear();
_logger.Log("Connecting to Pokemon GO Plus.", Category.Info, Priority.None);
// Wait a bit before connecting.
await Task.Delay(Constants.DelayMS);
for (int i = 0; i < Constants.RetryCount; i++)
{
try
{
await _adapter.ConnectToDeviceAsync(_devicesFound[device]);
_logger.Log("Successfully connected to Pokemon GO Plus.", Category.Info, Priority.None);
return;
}
catch (Exception e)
{
if (i < Constants.RetryCount - 1)
{
_logger.Log($"Error connecting to Pokemon GO Plus: {e.Message}. Trying Again.", Category.Exception, Priority.High);
await Task.Delay(Constants.DelayMS);
}
else
{
_logger.Log($"Error connecting to Pokemon GO Plus: {e.Message}.", Category.Exception, Priority.High);
_notifyManager.ShowShortToast("Unable to connect to Pokemon GO Plus.");
}
}
}
_logger.Log($"Unable to Connect to Pokemon GO Plus.", Category.Exception, Priority.High);
throw new Exception("Unable to Connect to Pokemon GO Plus");
}
public async Task <bool> ConnectDeviceAsync(DeviceItemViewModel device)
{
try
{
await adapter.ConnectToDeviceAsync(device.Device);
}
catch (DeviceConnectionException ex)
{
Debug.WriteLine("Error ConnectDeviceAsync : " + ex);
}
return(true);
}
public async void StartDeviceSequence(IDevice device)
{
try
{
await adapter.ConnectToDeviceAsync(device);
var services = await GetServices(device);
var characterstics = await GetCharacterstics(services.FirstOrDefault());
///read charactestics
///
var characteristic = characterstics.FirstOrDefault();
var bytes = await characteristic.ReadAsync();
await characteristic.WriteAsync(bytes);
characteristic.ValueUpdated += (o, args) =>
{
var bytes1 = args.Characteristic.Value;
};
await characteristic.StartUpdatesAsync();
//read descriptitor
var descriptors = await characteristic.GetDescriptorsAsync();
var descriptor = descriptors.FirstOrDefault();
var bytes2 = await descriptor.ReadAsync();
await descriptor.WriteAsync(bytes2);
}
catch (DeviceConnectionException e)
{
// ... could not connect to device
}
}
