I am trying to make my own Bluethoot client from the basic example in Microsoft combined with some yputube videos.
Everything started good but when i find MyDevice name and try to pass the "device.Id" for connection the function "BluetoothLEDevice.FromIdAsync" doesn't accept the ID: "Bluetooth#Bluetooth70:a8:d3:e4:b0:0a-xx:xx:xx:xx:xx:xx" and crashes, because it only accepts ID starting with BluetoothLE#BluetoothLE. Anyone with workaround from this issue.
The bluethoot of the device i am trying to connect is a GATT BluethootLE but with id that is not as usuall. So apparently it works because i am connecting to it with my phone.
Below is my simple code:
your text`using System;
your text`using System.Collections.Generic;
your text`using System.Diagnostics.Tracing;
your text`using System.Linq;
your text`using System.Text;
your text`using System.Threading;
your text`using System.Threading.Tasks;
using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.Advertisement;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using Windows.Devices.Enumeration;
using Windows.Storage.Streams;
namespace QuickBlueToothLE
{
class Program
{
static DeviceInformation device = null;
static BluetoothLEAdvertisementReceivedEventArgs advdevice = null;
//;public static string HEART_RATE_SERVICE_ID = "180d";
public static string VEHICLE_DATA_SERVICE_ID = "a4cf970a";
static async Task Main(string[] args)
{
// Query for extra properties you want returned
//string[] requestedProperties = { "System.Devices.Aep.DeviceAddress", "System.Devices.Aep.IsConnected"};
string BleSelector = "System.Devices.DevObjectType:=5 AND (System.Devices.Aep.ProtocolId:=\"{BB7BB05E-5972-42B5-94FC-76EAA7084D49}\" OR System.Devices.Aep.ProtocolId:=\"{E0CBF06C-CD8B-4647-BB8A-263B43F0F974}\")";
string[] requestedProperties = { "System.Devices.Aep.DeviceAddress", "System.Devices.Aep.IsConnected", "System.Devices.Aep.ProtocolId" };
DeviceWatcher deviceWatcher =
DeviceInformation.CreateWatcher(
BleSelector,
requestedProperties,
DeviceInformationKind.AssociationEndpoint);
deviceWatcher.Added += DeviceWatcher_Added;
deviceWatcher.Updated += DeviceWatcher_Updated;
deviceWatcher.Removed += DeviceWatcher_Removed; // += subscribe
deviceWatcher.EnumerationCompleted += DeviceWatcher_EnumerationCompleted;
deviceWatcher.Stopped += DeviceWatcher_Stopped;
// Start the watcher.
deviceWatcher.Start();
while (true)
{
if (device == null)
{
Thread.Sleep(200);
}
else
{
Console.WriteLine("Press Any to pair with MBUX");
Console.ReadKey();
BluetoothLEDevice bluetoothLeDevice = await BluetoothLEDevice.FromIdAsync(device.Id);
Console.WriteLine("Attempting to pair with device");
GattDeviceServicesResult result = await bluetoothLeDevice.GetGattServicesAsync();
Console.WriteLine(result.Status.ToString());
//GattDeviceServicesResult result = await bluetoothLeDevice.GetRfcommServicesAsync();
if (result.Status == GattCommunicationStatus.Success)
{
Console.WriteLine("Pairing succeeded");
var services = result.Services;
foreach (var service in services)
{
if (service.Uuid.ToString("N").Substring(0, 8) == VEHICLE_DATA_SERVICE_ID)
{
Console.WriteLine("Found vehicle data service");
GattCharacteristicsResult charactiristicResult = await service.GetCharacteristicsAsync();
if (charactiristicResult.Status == GattCommunicationStatus.Success)
{
var characteristics = charactiristicResult.Characteristics;
foreach (var characteristic in characteristics)
{
Console.WriteLine("---------------");
Console.WriteLine(characteristic);
GattCharacteristicProperties properties = characteristic.CharacteristicProperties;
if (properties.HasFlag(GattCharacteristicProperties.Read))
{
Console.WriteLine("Read poroperty found");
GattReadResult Read_result = await characteristic.ReadValueAsync();
if (Read_result.Status == GattCommunicationStatus.Success)
{
var reader = DataReader.FromBuffer(Read_result.Value);
byte[] input = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(input);
Console.WriteLine(input.ToString());
}
}
}
}
}
}
}
Console.WriteLine("Press Any Key to Exit application");
Console.ReadKey();
break;
}
}
deviceWatcher.Stop();
}
private static void DeviceWatcher_Stopped(DeviceWatcher sender, object args)
{
//throw new NotImplementedException();
}
private static void DeviceWatcher_EnumerationCompleted(DeviceWatcher sender, object args)
{
//throw new NotImplementedException();
}
private static void DeviceWatcher_Removed(DeviceWatcher sender, DeviceInformationUpdate args)
{
//throw new NotImplementedException();
}
private static void DeviceWatcher_Updated(DeviceWatcher sender, DeviceInformationUpdate args)
{
//throw new NotImplementedException();
}
private static void DeviceWatcher_Added(DeviceWatcher sender, DeviceInformation args)
{
Console.WriteLine(args.Name);
if (args.Name == "MyDevice")
//if (args.Id == "Bluetooth#Bluetooth70:a8:d3:e4:b0:0a-xx:xx:xx:xx:xx:xx")
device = args;
}
}
}
I havent try much more from this because i cannot change the ID of the device that i want to connect with.
