C# 如何从运行在Windows 10 Creators Update上的WPF应用程序注册BLE通知?
我正在尝试编写一个使用WinRT Bluetooth LE API(Windows.Devices.Bluetooth命名空间)的C#应用程序。该应用程序是Windows经典桌面应用程序(WPF,非UWP)。在创建者更新之前运行Windows 10版本时,这些API会按预期运行。但是,在运行Creators Update时,应该向蓝牙设备发送数据的API不起作用。具体而言,以下方法返回成功状态代码,但不通过蓝牙无线电传输任何数据(使用蓝牙流量嗅探器进行验证):C# 如何从运行在Windows 10 Creators Update上的WPF应用程序注册BLE通知?,c#,windows,bluetooth,bluetooth-lowenergy,creators-update,C#,Windows,Bluetooth,Bluetooth Lowenergy,Creators Update,我正在尝试编写一个使用WinRT Bluetooth LE API(Windows.Devices.Bluetooth命名空间)的C#应用程序。该应用程序是Windows经典桌面应用程序(WPF,非UWP)。在创建者更新之前运行Windows 10版本时,这些API会按预期运行。但是,在运行Creators Update时,应该向蓝牙设备发送数据的API不起作用。具体而言,以下方法返回成功状态代码,但不通过蓝牙无线电传输任何数据(使用蓝牙流量嗅探器进行验证): GattCharacterist
- GattCharacteristic.WriteClientCharacteristic配置描述符WithResultAsync
- GattCharacteristic.WriteValueAsync
- System.Runtime.WindowsRuntime,位于:C:\Program Files(x86)\Reference Assembly\Microsoft\Framework.NETCore\v4.5\System.Runtime.WindowsRuntime.dll
- Windows,位于:C:\Program Files(x86)\Windows Kits\10\UnionMetadata\Facade\Windows.WinMD 基础契约,发现在:C:\程序文件(x86)\ Windows工具包\ 10 \引用\\0.0.1563.0\Windows .Fase.基础合同\3.0.0.0\Windows .Fase.基础合同. WINMD Un> WINDOWS.Buff.UnvialSalpCopRead,发现于:C:\程序文件(x86)\ Windows工具包\ 10 \\\\\0.0.1563.0\Windows .Fun.UnvialSalpChanPouth\4.0.0.0\Windows。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using Windows.Devices.Enumeration;
using Windows.Foundation;
using Windows.Storage.Streams;
using System.Threading;
namespace BLEMinimumApp
{
class Program
{
private List<string> foundDevices = new List<string>(5);
static void Main(string[] args)
{
new Program().Execute();
}
private void Execute()
{
Console.WriteLine("Starting device watcher...");
string[] requestedProperties = { "System.Devices.Aep.IsConnected" };
String query = "";
//query for Bluetooth LE devices
query += "(System.Devices.Aep.ProtocolId:=\"{bb7bb05e-5972-42b5-94fc-76eaa7084d49}\")";
//query for devices with controllers' name
query += " AND (System.ItemNameDisplay:=\"GPLeft\" OR System.ItemNameDisplay:=\"GPRight\")";
var deviceWatcher = DeviceInformation.CreateWatcher(query, requestedProperties, DeviceInformationKind.AssociationEndpoint);
deviceWatcher.Added += DeviceWatcher_OnAdded;
deviceWatcher.Start();
Console.ReadLine();
}
private async void DeviceWatcher_OnAdded(DeviceWatcher sender, DeviceInformation deviceInfo)
{
lock (foundDevices)
{
if (foundDevices.Contains(deviceInfo.Name))
{
return;
}
foundDevices.Add(deviceInfo.Name);
}
Console.WriteLine($"[{deviceInfo.Name}] DeviceWatcher_OnAdded...");
await ConnectTo(deviceInfo);
}
private async Task ConnectTo(DeviceInformation deviceInfo)
{
try
{
// get the device
BluetoothLEDevice device = await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
Console.WriteLine($"[{device.Name}] Device found: connectionStatus={device?.ConnectionStatus}");
// get the GATT service
Thread.Sleep(150);
Console.WriteLine($"[{device.Name}] Get GATT Services");
var gattServicesResult = await device.GetGattServicesForUuidAsync(new Guid("<GUID REMOVED FOR SO POST"));
Console.WriteLine($"[{device.Name}] GATT services result: status={gattServicesResult?.Status}, count={gattServicesResult?.Services?.Count}, cx={device.ConnectionStatus}");
if (gattServicesResult == null
|| gattServicesResult.Status != GattCommunicationStatus.Success
|| gattServicesResult.Services == null
|| gattServicesResult.Services?.Count < 1)
{
Console.WriteLine($"[{device.Name}] Failed to find GATT service.");
return;
}
var service = gattServicesResult.Services[0];
Console.WriteLine($"[{device?.Name}] GATT service found: gattDeviceService={service.Uuid}");
// get the GATT characteristic
Thread.Sleep(150);
Console.WriteLine($"[{device.Name}] Get GATT characteristics");
var gattCharacteristicsResult = await service.GetCharacteristicsForUuidAsync(new Guid("<GUID REMOVED FOR SO POST>"));
Console.WriteLine($"[{device.Name}] GATT Characteristics result: status={gattCharacteristicsResult?.Status}, count={gattCharacteristicsResult?.Characteristics?.Count}, cx={device.ConnectionStatus}");
if (gattCharacteristicsResult == null
|| gattCharacteristicsResult.Status != GattCommunicationStatus.Success
|| gattCharacteristicsResult.Characteristics == null
|| gattCharacteristicsResult.Characteristics?.Count < 1)
{
Console.WriteLine($"[{device.Name}] Failed to find GATT characteristic.");
return;
}
var characteristic = gattCharacteristicsResult.Characteristics[0];
// register for notifications
Thread.Sleep(150);
characteristic.ValueChanged += (sender, args) =>
{
Console.WriteLine($"[{device.Name}] Received notification containing {args.CharacteristicValue.Length} bytes");
};
Console.WriteLine($"[{device.Name}] Writing CCCD...");
GattWriteResult result =
await characteristic.WriteClientCharacteristicConfigurationDescriptorWithResultAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
Console.WriteLine($"[{device?.Name}] Characteristics write result: status={result.Status}, protocolError={result.ProtocolError}");
// send configuration to device
await SendConfiguration(device, characteristic);
}
catch (Exception ex) when((uint) ex.HResult == 0x800710df)
{
Console.WriteLine("bluetooth error 1");
// ERROR_DEVICE_NOT_AVAILABLE because the Bluetooth radio is not on.
}
}
private async Task SendConfiguration(BluetoothLEDevice device, GattCharacteristic characteristic)
{
if (characteristic != null)
{
var writer = new DataWriter();
// CONFIGURATION REMOVED, but this code writes device-specific bytes to the DataWriter
await SendMessage(device, characteristic, writer.DetachBuffer());
}
}
private async Task SendMessage(BluetoothLEDevice device, GattCharacteristic characteristic, IBuffer message)
{
if (characteristic != null && device.ConnectionStatus.Equals(BluetoothConnectionStatus.Connected) && message != null)
{
Console.WriteLine($"[{device.Name}] Sending message...");
GattCommunicationStatus result = await characteristic.WriteValueAsync(message);
Console.WriteLine($"[{device.Name}] Result: {result}");
}
}
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用系统文本;
使用System.Threading.Tasks;
使用系统诊断;
使用System.Runtime.CompilerServices;
使用System.Runtime.InteropServices.WindowsRuntime;
使用Windows.Devices.Bluetooth;
使用Windows.Devices.Bluetooth.GenerictTributeProfile;
使用Windows.Devices.Enumeration;
使用Windows基金会;
使用Windows.Storage.Streams;
使用系统线程;
名称空间小程序
{
班级计划
{
私有列表设备=新列表(5);
静态void Main(字符串[]参数)
{
新程序().Execute();
}
私有void Execute()
{
Console.WriteLine(“启动设备监视程序…”);
字符串[]requestedProperties={“System.Devices.Aep.IsConnected”};
字符串查询=”;
//查询蓝牙设备
查询+=“(系统设备Aep协议:=\”{bb7bb05e-5972-42b5-94fc-76EAA708449}\”;
//查询具有控制器名称的设备
查询+=”和(System.ItemNameDisplay:=“GPLeft\”或System.ItemNameDisplay:=“GPRight\”);
var deviceWatcher=DeviceInformation.CreateWatcher(查询、requestedProperties、DeviceInformationKind.AssociationEndpoint);
deviceWatcher.Added+=deviceWatcher\u OnAdded;
deviceWatcher.Start();
Console.ReadLine();
}
专用异步无效DeviceWatcher\u OnAdded(DeviceWatcher发送方,DeviceInformation deviceInfo)
{
锁(设备)
{
if(foundDevices.Contains(deviceInfo.Name))
{
返回;
}
添加(deviceInfo.Name);
}
Console.WriteLine($“[{deviceInfo.Name}]DeviceWatcher_OnAdded…”);
等待连接到(设备信息);
}
专用异步任务连接到(设备信息设备信息)
{
尝试
{
//拿到设备
BluetoothLEDevice设备=等待BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
Console.WriteLine($“[{device.Name}]找到的设备:connectionStatus={device?.connectionStatus}”);
//获得关贸总协定服务
睡眠(150);
Console.WriteLine($“[{device.Name}]getgatt服务”);
var gattServicesResult=await device.getgattservicesfouruidasync(新Guid(“COM安全性可能会阻止您的应用程序接收通知。请参阅以下线程以获取解决方案。我建议使用注册表黑客
我有一个类似的问题,在上面的注册表更改中,我的应用程序收到的通知很少,并且没有任何明显的原因停止。
在这个问题上浪费了很多时间,并等待Microsoft的修补程序。最新更新纠正了这一问题。您可以