public override IObservable <IScanResult> Scan(ScanConfig config)
{
if (this.IsScanning)
{
throw new ArgumentException("There is already an active scan");
}
return(Observable.Create <IScanResult>(ob =>
{
this.IsScanning = true;
this.context.Clear();
var sub = this
.WhenRadioReady()
.Where(rdo => rdo != null)
.Select(_ => this.CreateScanner(config))
.Switch()
.Subscribe(
async args => // CAREFUL
{
var device = this.context.GetPeripheral(args.BluetoothAddress);
if (device == null)
{
var btDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress);
if (btDevice != null)
{
device = this.context.AddOrGetPeripheral(btDevice);
}
}
if (device != null)
{
var adData = new AdvertisementData(args);
var scanResult = new ScanResult(device, args.RawSignalStrengthInDBm, adData);
ob.OnNext(scanResult);
}
},
ob.OnError
);
var stopSub = this.scanSubject.Subscribe(_ =>
{
this.IsScanning = false;
sub?.Dispose();
ob.OnCompleted();
});
return () =>
{
this.IsScanning = false;
sub?.Dispose();
stopSub?.Dispose();
};
}));
}
static async Task <bool> Pair(AnkiBLE.anki_vehicle vehicle)
{
BluetoothLEDevice device = await BluetoothLEDevice.FromBluetoothAddressAsync(vehicle.mac_address);
DeviceInformationCustomPairing customPairing = device.DeviceInformation.Pairing.Custom;
customPairing.PairingRequested += PairingRequestedHandler;
DevicePairingResult result = await customPairing.PairAsync(DevicePairingKinds.ConfirmOnly, DevicePairingProtectionLevel.None);
customPairing.PairingRequested -= PairingRequestedHandler;
return(result.Status == DevicePairingResultStatus.Paired || result.Status == DevicePairingResultStatus.AlreadyPaired);
}
private async Task <BluetoothLEDevice> ConnectToDevice(BluetoothLEAdvertisementReceivedEventArgs eventArgs)
{
BluetoothLEDevice device = await BluetoothLEDevice.FromBluetoothAddressAsync(eventArgs.BluetoothAddress);
if (device == null)
{
Exception e = new Exception("Connecting to bluetooth device failed");
throw e;
}
return(device);
}
/// <summary>
/// Handler for devices found when duplicates are allowed
/// </summary>
/// <param name="watcher">The bluetooth advertisement watcher currently being used</param>
/// <param name="btAdv">The advertisement recieved by the watcher</param>
private async void DeviceFoundAsyncDuplicate(BluetoothLEAdvertisementWatcher watcher, BluetoothLEAdvertisementReceivedEventArgs btAdv)
{
BluetoothLEDevice currDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(btAdv.BluetoothAddress);
if (currDevice != null)
{
var device = new Device(this, currDevice, btAdv.RawSignalStrengthInDBm, btAdv.BluetoothAddress.ToString(), ParseAdvertisementData(btAdv.Advertisement));
Trace.Message("DiscoveredPeripheral: {0} Id: {1}", device.Name, device.Id);
this.HandleDiscoveredDevice(device);
}
return;
}
public async Task <IGattClient> ConnectToGattServerAsync()
{
BluetoothLEDevice uwpLeDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(Address);
if (uwpLeDevice == null)
{
return(null);
}
GattClient gattClient = new GattClient(this, uwpLeDevice);
return(gattClient);
}
private async void BleWatcher_Received(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
if (!string.IsNullOrEmpty(args.Advertisement.LocalName) && args.Advertisement.LocalName == "Flower care")
{
var device = await BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress);
if (!bluetoothLEDevices.Any(x => x.DeviceId == device.DeviceId))
{
bluetoothLEDevices.Add(device);
}
}
}
/// <summary>
/// connects to the BLE device and extracts more information for the
/// <see cref="https://docs.microsoft.com/en-us/uwp/api/windows.devices.bluetooth.bluetoothledevice"/>
/// </summary>
/// <param name="address">the bluetooth device address to connect</param>
/// <param name="broadcastTime">the time broadcast message received</param>
/// <param name="rssi">the signal strength received</param>
/// <returns></returns>
private async Task <DnaBluetoothLEDevice> GetBluetoothLEDeviceAsync(ulong address, DateTimeOffset broadcastTime, short rssi)
{
// get bluetooth device info
var device = await BluetoothLEDevice.FromBluetoothAddressAsync(address).AsTask();
// null check
if (device == null)
{
return(null);
}
// NOTE: this can throw a System.Exception for failure
// get GATT Services that are available
var gatt = await device.GetGattServicesAsync().AsTask();
// if we have any services..
if (gatt.Status == GattCommunicationStatus.Success)
{
// loop each GATT Service
foreach (var service in gatt.Services)
{
// this id contains GATT Profile Assigned number
var gattProfileID = service.Uuid;
//if(service.Uuid.ToString("N").Substring(4,4) == "1808")
//{
// System.Diagnostics.Debugger.Break();
//}
}
}
// return the new device information
return(new DnaBluetoothLEDevice
(
// Device Id
deviceId: device.DeviceId,
// Bluetooth address
address: device.BluetoothAddress,
// device name
name: device.Name,
// broadcast time
broadcastTime: broadcastTime,
// signal name
rssi: rssi,
// is connected?
connected: device.ConnectionStatus == BluetoothConnectionStatus.Connected,
// can pair?
canPair: device.DeviceInformation.Pairing.CanPair,
// is paired?
paired: device.DeviceInformation.Pairing.IsPaired
));
}
public override IObservable <IDevice> GetKnownDevice(Guid deviceId) => Observable.FromAsync(async ct =>
{
IDevice device = null;
var mac = deviceId.ToMacAddress();
var native = await BluetoothLEDevice.FromBluetoothAddressAsync(mac).AsTask(ct);
if (native != null)
{
device = this.context.AddOrGetDevice(mac, native);
}
return(device);
});
public async override Task <IDevice> ConnectToKnownDeviceAsync(Guid deviceGuid, ConnectParameters connectParameters, CancellationToken cancellationToken)
{
//convert GUID to string and take last 12 characters as MAC address
var guidString = deviceGuid.ToString("N").Substring(20);
ulong bluetoothAddr = Convert.ToUInt64(guidString, 16);
var nativeDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(bluetoothAddr);
var currDevice = new Device(this, nativeDevice, 0, guidString);
await ConnectToDeviceAsync(currDevice);
return(currDevice);
}
public async Task Connect()
{
if (this.NativeDevice != null && this.NativeDevice.ConnectionStatus == BluetoothConnectionStatus.Connected)
{
return;
}
this.connSubject.OnNext(ConnectionStatus.Connecting);
this.NativeDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(this.bluetoothAddress);
this.NativeDevice.ConnectionStatusChanged += this.OnNativeConnectionStatusChanged;
await this.NativeDevice.GetGattServicesAsync(BluetoothCacheMode.Uncached); // HACK: kick the connection on
}
private async Task <BluetoothLEDevice> ConnectToDeviceAsync(BrilliantSoleDevice sole)
{
Console.WriteLine("Attempting to connect to " + sole.name);
sole.device = await BluetoothLEDevice.FromBluetoothAddressAsync(sole.address);
if (sole.device == null)
{
Console.WriteLine("Failed to connect to " + sole.name);
throw new Exception("Failed to connect."); // TODO - Recover
}
Console.WriteLine("Successfully connected to " + sole.name);
return(sole.device);
}
/// <summary>
/// Connects to the BLE device and extracts more information from the
/// <seealso cref="https://docs.microsoft.com/en-us/uwp/api/windows.devices.bluetooth.bluetoothledevice"/>
/// </summary>
/// <param name="address">The BT address of the device to connect to</param>
/// <param name="broadcastTime">The time the broadcast message was received</param>
/// <param name="rssi">The signal strength in dB</param>
/// <returns></returns>
private async Task <DnaBluetoothLEDevice> GetBluetoothLEDeviceAsync(ulong address, DateTimeOffset broadcastTime, short rssi)
{
// Get bluetooth device info
using var device = await BluetoothLEDevice.FromBluetoothAddressAsync(address).AsTask();
// Null guard
if (device == null)
{
return(null);
}
// Get GATT services that are available
var gatt = await device.GetGattServicesAsync().AsTask();
// If we have any services...
if (gatt.Status == GattCommunicationStatus.Success)
{
// Loop each GATT service
foreach (var service in gatt.Services)
{
// This ID contains the GATT Profile Assigned number we want
// TODO: get more info to connect
var gattProfileId = service.Uuid;
if (service.Uuid.ToString("N").Substring(4, 4) == "1808")
{
}
}
}
// Return the new device information
return(new DnaBluetoothLEDevice
(
// Device Id
deviceId: device.DeviceId,
// Bluetooth Address
address: device.BluetoothAddress,
// Device Name
name: device.Name,
// Broadcast Time
broadcastTime: broadcastTime,
// Signal Strength
rssi: rssi,
// Is Connected?
connected: device.ConnectionStatus == BluetoothConnectionStatus.Connected,
// Can Pair?
canPair: device.DeviceInformation.Pairing.CanPair,
// Is Paired
paired: device.DeviceInformation.Pairing.IsPaired
));
}
/// <summary>
/// Connect to the BLE device and extracts information from the device
/// </summary>
/// <returns></returns>
private async Task <DnaBluetoothLEDevice> GetBluetoothLEDeviceAsync(ulong address, DateTimeOffset brodcastTime, short rssi)
{
// Get bluetooth device info
using var device = await BluetoothLEDevice.FromBluetoothAddressAsync(address).AsTask();
// Null guard
if (device == null)
{
return(null);
}
// Get GATT services that are available
var gatt = await device.GetGattServicesAsync().AsTask();
// If we have any services...
if (gatt.Status == GattCommunicationStatus.Success)
{
// loop each GATT Service
foreach (var services in gatt.Services)
{
// This Id contains the GATT profile assigned number we want!
// TODO: get more info and connect
var gattProfileId = services.Uuid;
}
}
;
return(new DnaBluetoothLEDevice
(
// Device Id
deviceid: device.DeviceId,
// BlueTooth Address
address: device.BluetoothAddress,
// Device name
name: device.Name,
// Time of broadcast
broadcastTime: brodcastTime,
// Signal strength
rssi: rssi,
connected: device.ConnectionStatus == BluetoothConnectionStatus.Connected,
canpair: device.DeviceInformation.Pairing.CanPair,
paired: device.DeviceInformation.Pairing.IsPaired
));
}
private async static Task <GattDeviceService> waitConnection(AnkiBLE.anki_vehicle vehicle)
{
BluetoothLEDevice bluetoothLeDevice = null;
GattDeviceService service = null;
bluetoothLeDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(vehicle.mac_address);
while (bluetoothLeDevice.ConnectionStatus != BluetoothConnectionStatus.Connected)
{
throw new Exception("Not connected!");
}
service = bluetoothLeDevice.GetGattService(Guid.Parse("be15beef-6186-407e-8381-0bd89c4d8df4"));
return(service);
}
internal BluetoothAdvertisingEvent(BluetoothLEAdvertisementReceivedEventArgs args)
{
_rssi = args.RawSignalStrengthInDBm;
_txPower = args.TransmitPowerLevelInDBm.HasValue ? (sbyte)args.TransmitPowerLevelInDBm.Value : (sbyte)0;
/*var sections = args.Advertisement.GetSectionsByType(0xA);
* if(sections != null && sections.Count > 0)
* {
* var array = sections[0].Data.ToArray();
*
* _txPower = sections[0].Data.GetByte(0);
* }*/
var appearanceSections = args.Advertisement.GetSectionsByType(0x19);
if (appearanceSections != null && appearanceSections.Count > 0)
{
var appearanceArray = appearanceSections[0].Data.ToArray();
_appearance = BitConverter.ToUInt16(appearanceArray, 0);
}
// https://docs.microsoft.com/en-us/uwp/api/windows.devices.bluetooth.bluetoothledevice.frombluetoothaddressasync?view=winrt-20348
// If there are no other pending request, and the remote device is unreachable,
// then the system will wait for seven (7) seconds before it times out. If
// there are other pending requests, then each of the requests in the queue can
// take seven (7) seconds to process, so the further yours is toward the back
// of the queue, the longer you'll wait.
IAsyncOperation <BluetoothLEDevice> deviceAsync = BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress, args.BluetoothAddressType);
// https://github.com/inthehand/32feet/issues/96
// Wait some time for this task to complete otherwise the event will fire
// before the 'Device' property as been set.
if (deviceAsync.AsTask().Wait(7000))
{
Device = deviceAsync.GetResults();
}
else
{
try
{
// The documents state that it is not possible to cancel 'FromBluetoothAddressAsync'
// so mask any exceptions before calling this.
deviceAsync.Cancel();
}
catch
{
}
}
_advertisement = args.Advertisement;
}
public override async Task ConnectAsync()
{
if (ConnectionStatus.DISCONNECTED == ConnectionStatus)
{
ConnectionStatus = ConnectionStatus.CONNECTING;
BluetoothLeDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(BluetoothAddress);
BluetoothLeDevice.ConnectionStatusChanged += ConnectionStatusChanged;
var gattDeviceServicesResult = await BluetoothLeDevice.GetGattServicesForUuidAsync(SERVICE_UUID);
Services = gattDeviceServicesResult.Services;
var foundService = gattDeviceServicesResult.Services.Single(s => s.Uuid == SERVICE_UUID);
GattCharacteristicsResult gattCharacteristicsResult = await foundService.GetCharacteristicsAsync();
ReadData = gattCharacteristicsResult.Characteristics.Single(x => x.Uuid == CHARACTERISTIC_READ_UUID);
Debug.WriteLine("Found Read Char");
WriteData = gattCharacteristicsResult.Characteristics.Single(x => x.Uuid == CHARACTERISTIC_WRITE_UUID);
Debug.WriteLine("Found Write Char");
GattCommunicationStatus status = GattCommunicationStatus.Unreachable;
int count = 0;
do
{
try
{
status = await ReadData.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
Debug.WriteLine("Notify status: " + status);
}
catch (Exception e)
{
Debug.WriteLine("Error during notify" + e.Message);
}
} while (status != GattCommunicationStatus.Success && ++count < 5);
if (status == GattCommunicationStatus.Success)
{
ReadData.ValueChanged += HandleRealTimeData;
await WriteValue();
ConnectionStatus = ConnectionStatus.CONNECTED;
}
else
{
ConnectionStatus = ConnectionStatus.DISCONNECTED;
}
}
}
private async void Initialize()
{
Console.WriteLine(tag, "Connecting...");
this.Device = await BluetoothLEDevice.FromBluetoothAddressAsync(this.DeviceAddress);
DevicePairingResult result = await this.Device.DeviceInformation.Pairing.PairAsync();
if (result.Status != DevicePairingResultStatus.AlreadyPaired && result.Status != DevicePairingResultStatus.Paired)
{
Console.WriteLine(tag, "Failed to pair:" + result.Status);
this.Device.Dispose();
return;
}
EnableUpgradeMode();
}
private async void OnAdvertisementReceived(BluetoothLEAdvertisementWatcher watcher, BluetoothLEAdvertisementReceivedEventArgs eventArgs)
{
Debug.Write("Ad ");
string deviceName = eventArgs.Advertisement.LocalName;
Debug.WriteLine(deviceName);
if (deviceName == "Nano33BLE")
{
BluetoothLEDevice device = await BluetoothLEDevice.FromBluetoothAddressAsync(eventArgs.BluetoothAddress);
watcher.Stop();
SetupConnection(device);
}
}
// Pairs device with Sensortag
public async Task PairSensorTagAsync()
{
device = await BluetoothLEDevice.FromBluetoothAddressAsync(bleadress);
bluetoothLeDevice = await BluetoothLEDevice.FromIdAsync(device.DeviceId);
var status = await device.DeviceInformation.Pairing.PairAsync();
await GetGATTServicesDataAsync(device);
}
internal override async Task RenewCharacteristic()
{
if (Device != null)
{
Device = await BluetoothLEDevice.FromBluetoothAddressAsync(Device.BluetoothAddress);
Gatt = await Device.GetGattServicesAsync(BluetoothCacheMode.Uncached);
AllCharacteristic = await Gatt.Services.Single(s => s.Uuid == Guid.Parse("4E050000-74FB-4481-88B3-9919B1676E93")).GetCharacteristicsAsync(BluetoothCacheMode.Uncached);
Characteristic = AllCharacteristic.Characteristics.Single(s => s.Uuid == Guid.Parse("000092d1-0000-1000-8000-00805f9b34fb"));
MainBoard.WriteLine("New Hub Found of type " + Enum.GetName(typeof(Hub.Types), Type), Color.Green);
}
}
public async Task Start()
{
_device = await BluetoothLEDevice.FromBluetoothAddressAsync(_address);
if (_device == null)
{
GlobalCounters.IncrementFailedCreate();
return;
}
GlobalDeviceNameTracking.ReportName(_device.Name, _device.BluetoothAddress);
_device.ConnectionStatusChanged += ConnectionStatusChanged;
GlobalCounters.IncrementDevicesCreated();
}
/// <summary>
/// Obtain a new Characteristic
/// </summary>
/// <param name="device"></param>
/// <returns></returns>
internal virtual async System.Threading.Tasks.Task RenewCharacteristic()
{
if (Device != null)
{
Device = await BluetoothLEDevice.FromBluetoothAddressAsync(Device.BluetoothAddress);
Gatt = await Device.GetGattServicesAsync(BluetoothCacheMode.Uncached);
AllCharacteristic = await Gatt.Services.Single(s => s.Uuid == Guid.Parse("00001623-1212-efde-1623-785feabcd123")).GetCharacteristicsAsync(BluetoothCacheMode.Uncached);
Characteristic = AllCharacteristic.Characteristics.Single(c => c.Uuid == Guid.Parse("00001624-1212-efde-1623-785feabcd123"));
MainBoard.WriteLine("New Hub Found of type " + Enum.GetName(typeof(Hub.Types), Type), Color.Green);
}
}
/// <summary>
/// Handle the client's request to connect to a particular peripheral.
/// Valid in the discovery state; transitions to connected state on success.
/// </summary>
/// <param name="parameters">
/// A JSON object containing the UUID of a peripheral found by the most recent discovery request
/// </param>
private async Task Connect(JObject parameters)
{
if (_services != null)
{
//throw JsonRpcException.InvalidRequest("already connected to peripheral");
return;
}
var peripheralId = parameters["peripheralId"].ToObject <ulong>();
if (!_reportedPeripherals.Contains(peripheralId))
{
// the client may only connect to devices that were returned by the current discovery request
throw JsonRpcException.InvalidParams($"invalid peripheral ID: {peripheralId}");
}
_peripheral = await BluetoothLEDevice.FromBluetoothAddressAsync(peripheralId);
var servicesResult = await _peripheral.GetGattServicesAsync(BluetoothCacheMode.Uncached);
if (servicesResult.Status != GattCommunicationStatus.Success)
{
throw JsonRpcException.ApplicationError($"failed to enumerate GATT services: {servicesResult.Status}");
}
_peripheral.ConnectionStatusChanged += OnPeripheralStatusChanged;
_services = servicesResult.Services;
// collect optional services plus all services from all filters
// Note: this modifies _optionalServices for convenience since we know it'll go away soon.
_allowedServices = _optionalServices ?? new HashSet <Guid>();
_allowedServices = _filters
.Where(filter => filter.RequiredServices?.Count > 0)
.Aggregate(_allowedServices, (result, filter) =>
{
result.UnionWith(filter.RequiredServices);
return(result);
});
// clean up resources used by discovery
if (_watcher != null)
{
_watcher.Stop();
_watcher = null;
}
//_reportedPeripherals.Clear();
_optionalServices = null;
}
/// <summary>
/// Connects to the BLE device and extracts more information from the
/// <see cref="https://docs.microsoft.com/en-us/uwp/api/windows.devices.bluetooth.bluetoothledvice"/>
/// </summary>
/// <param name="address">The Bluetooth address of the device to connect to</param>
/// <param name="broadcastTime">The time the broadcast message was received</param>
/// <param name="rssi">The signal strength in dB</param>
/// <returns></returns>
/// <Capabilities> <DeviceCapability Name = "bluetooth"/></Capabilities>
private async Task <RoverBluetoothLEDevice> GetBluetoothLEDeviceAsync(ulong address, DateTimeOffset broadcastTime, short rssi)
{
// Get bluetooth device info
var device = await BluetoothLEDevice.FromBluetoothAddressAsync(address).AsTask();
// Null Guard
if (device == null)
{
return(null);
}
// NOTE: This can throw a System.Exception for failures
// Get GATT services that are available
var gatt = await device.GetGattServicesAsync().AsTask();
// If we have any services...
if (gatt.Status == GattCommunicationStatus.Success)
{
// Loop each GATT service
foreach (var service in gatt.Services)
{
// This ID contains the GATT Profile Assigned number needed
// TODO: Get more info and connect
var gattProfileId = service.Uuid;
}
}
// Return the new device information
return(new RoverBluetoothLEDevice
(
// Device ID
deviceID: device.DeviceId,
// Bluetooth Address
addressBT: device.BluetoothAddress,
// Device name
name: device.Name,
// Broadcast time
broadcastTime: broadcastTime,
// Signal strength
rssi: rssi,
// Is Connected?
connected: device.ConnectionStatus == BluetoothConnectionStatus.Connected,
// Can Pair?
canPair: device.DeviceInformation.Pairing.CanPair,
// Is Paired?
paired: device.DeviceInformation.Pairing.IsPaired
));
}
public override IObservable <IPeripheral?> GetKnownPeripheral(string peripheralUuid) => Observable.FromAsync(async ct =>
{
var mac = Guid.Parse(peripheralUuid).ToBluetoothAddress();
var per = this.context.GetPeripheral(mac);
if (per == null)
{
var native = await BluetoothLEDevice.FromBluetoothAddressAsync(mac).AsTask(ct);
if (native != null)
{
per = this.context.AddOrGetPeripheral(native);
}
}
return(per);
});
internal override async Task RenewCharacteristic()
{
if (Device != null)
{
Device = await BluetoothLEDevice.FromBluetoothAddressAsync(Device.BluetoothAddress);
Gatt = await Device.GetGattServicesAsync(BluetoothCacheMode.Uncached);
AllCharacteristic = await Gatt.Services.Single(s => s.Uuid == Guid.Parse("49535343-FE7D-4AE5-8FA9-9FAFD205E455")).GetCharacteristicsAsync(BluetoothCacheMode.Uncached);
Characteristic = AllCharacteristic.Characteristics.Single(c => c.Uuid == Guid.Parse("49535343-1E4D-4BD9-BA61-23C647249616"));
TxCharacteristic = AllCharacteristic.Characteristics.Single(c => c.Uuid == Guid.Parse("49535343-8841-43F4-A8D4-ECBE34729BB3"));
MainBoard.WriteLine("New Hub Found of type " + Enum.GetName(typeof(Hub.Types), Type), Color.Green);
}
}
private async void AdbWatcher_Received(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
if (args.Advertisement.ServiceUuids.Contains(this.targetUuid))
{
Debug.WriteLine("detect");
this.adbWatcher.Stop();
this.adbWatcher.Received -= AdbWatcher_Received;
this.bleDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress); // MAC Address -> BLEDevice
this.condition.Signal();
await Task.Delay(1000);
this.condition.Reset();
}
}
private static async void bluetoothFoundAsync(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
string deviceName = args.Advertisement.LocalName;
string deviceAddress = args.BluetoothAddress.ToString();
if (deviceName.Contains("Foldio"))
{
var bdevice = await BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress);
ScannedDevicesList.Add(bdevice);
watcher.Stop();
}
else
{
}
}
// AdvertisementWatcher Detected device
private async void DeviceDiscovered(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
bool returnDevice = scanServices.Count == 0;
if (!returnDevice)
{
foreach (Guid uuid in args.Advertisement.ServiceUuids)
{
returnDevice = scanServices.Contains(uuid.ToString().ToUpper());
if (returnDevice)
{
break;
}
}
}
if (returnDevice)
{
BluetoothLEDevice device = await BluetoothLEDevice.FromBluetoothAddressAsync(args.BluetoothAddress);
if (device != null)
{
if (!deviceAddresses.Contains(device.BluetoothAddress))
{
devices.Add(device);
deviceAddresses.Add(device.BluetoothAddress);
}
string advertisedName = device.Name;
List <BluetoothLEAdvertisementDataSection> complete = new List <BluetoothLEAdvertisementDataSection>(args.Advertisement.GetSectionsByType(BluetoothLEAdvertisementDataTypes.CompleteLocalName));
List <BluetoothLEAdvertisementDataSection> smallName = new List <BluetoothLEAdvertisementDataSection>(args.Advertisement.GetSectionsByType(BluetoothLEAdvertisementDataTypes.ShortenedLocalName));
if (complete.Count > 0)
{
advertisedName = Encoding.UTF8.GetString(complete[0].Data.ToArray());
}
else if (smallName.Count > 0)
{
advertisedName = Encoding.UTF8.GetString(smallName[0].Data.ToArray());
}
callback.onDeviceDiscovered((device.BluetoothAddress + "").ToUpper(), advertisedName, args.RawSignalStrengthInDBm);
}
else
{
Debug.WriteLine("-------------Error:------------");
Debug.WriteLine("Devie with address " + args.BluetoothAddress + " was a null device!");
Debug.WriteLine("-------------------------------");
}
}
}
private async Task <bool> ConnectDevice()
{
if (Device == null)
{
string bta = BluetoothAddress.ToString("X");
Device = await BluetoothLEDevice.FromBluetoothAddressAsync(BluetoothAddress);
if (Device == null)
{
return(false);
}
Dbg("connected to device: " + bta);
var characteristics = new List <GattCharacteristic>();
var gatt = await Device.GetGattServicesAsync();
var svc_rest = gatt.Services.First(s => s.Uuid == BT.SVC_REST);
var svc_advertising = gatt.Services.First(s => s.Uuid == BT.SVC_ADVERTISING);
characteristics.AddRange((await svc_rest.GetCharacteristicsAsync()).Characteristics);
characteristics.AddRange((await svc_advertising.GetCharacteristicsAsync()).Characteristics);
try
{
// save TX/RX/Manufacturer channels
CharTX = characteristics.First(c => c.Uuid == BT.CHAR_TX);
CharRX = characteristics.First(c => c.Uuid == BT.CHAR_RX);
CharFeedback = characteristics.First(c => c.Uuid == BT.CHAR_FEEDBACK);
}
catch (Exception)
{
Dbg("error configuring characteristics: " + bta);
Device = null;
return(false);
}
await RefreshData();
#region there is a bug with UWP read notifications, this does not work (yet)
//CharRX.ValueChanged += (obj, args) => ProcessRXData(args.CharacteristicValue);
// var status = await CharRX.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
// if (status != GattCommunicationStatus.Success)
// {
// throw new Exception("Could not connect to receive channel.");
// }
// Dbg("registered for rx notify: " + bta);
#endregion
}
return(true);
}
