所以我尝试将我的c#WPF程序连接到BLE设备,这是连接到设备的代码:
private async Task ConnectToWatcher(DeviceInformation deviceInfo) {
try {
// get the device
BluetoothLEDevice device = await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
// get the GATT service
Thread.Sleep(150);
var gattServicesResult = await device.GetGattServicesForUuidAsync(new Guid(RX_SERVICE_UUID));
service = gattServicesResult.Services[0];
// get the GATT characteristic
Thread.Sleep(150);
var gattCharacteristicsResult = await service.GetCharacteristicsForUuidAsync(new Guid(RX_CHAR_UUID));
characteristic = gattCharacteristicsResult.Characteristics[0];
// register for notifications
Thread.Sleep(150);
characteristic.ValueChanged += (sender, args) => {
Debug.WriteLine($"[{device.Name}] Received notification containing {args.CharacteristicValue.Length} bytes");
};
GattWriteResult result =
await characteristic.WriteClientCharacteristicConfigurationDescriptorWithResultAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
Debug.WriteLine($"Characteristics write result: status={result.Status}, protocolError={result.ProtocolError}");
} catch (Exception ex) when ((uint)ex.HResult == 0x800710df) {
Debug.WriteLine("bluetooth error 1");
// ERROR_DEVICE_NOT_AVAILABLE because the Bluetooth radio is not on.
}
}
该行
Debug.WriteLine($"Characteristics write result: status={result.Status}, protocolError={result.ProtocolError}"
创建输出 特征写入结果:status = protocolError,protocolError = 3 我无法找到任何意味着什么的东西。效果是方法特征.ValueChanged 永远不会被调用。
我是否必须做更多才能具有可配置的特性?并且有任何人知道为什么不调用该方法或该错误消息意味着什么?
非常感谢。
答案 0 :(得分:1)
显然,某些Windows 10版本存在COM安全漏洞。 解决方案是注册Windows-Insider-Program并更新Windows。
<强>更新强> 还有两个解决方案: 1)从你的c#-code外部调用CoInitializeSecurity(没有让它工作) - 要么- 2)将两个新密钥写入Windows注册表。您可以创建一个文件“Bluetooth.reg”,它将在doubleklick上添加这两个键。 https://social.msdn.microsoft.com/Forums/en-US/58da3fdb-a0e1-4161-8af3-778b6839f4e1/bluetooth-bluetoothledevicefromidasync-does-not-complete-on-10015063?forum=wdk的答案是我的解决方案:
嗨Kamen,我遇到了完全相同的问题。您可以快速尝试以下内容:
Windows注册表编辑器版本5.00
[HKEY_LOCAL_MACHINE \ SOFTWARE \类\ {的AppID C6BFD646-3DF0-4DE5-B7AF-5FFFACB844A5}] “AccessPermission”=十六进制:01,00,04,80,9c,00,00,00,交流,00,00,00,00,00,00,00,14,00,\ 00,00,02,00,88,00,06,00,00,00,00,00,14,00,07,00,00,00,01,01,00,00,00,00,00, \ 05,0a,00,00,00,00,00,14,00,03,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00, \ 00,00,18,00,07,00,00,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00,00, \ 00,18,00,03,00,00,00,01,02,00,00,00,00,00,0f,02,00,00,00,01,00,00,00,00,00, \ 14,00,03,00,00,00,01,01,00,00,00,00,00,05,13,00,00,00,00,00,14,00,03,00,00, \ 00,01,01,00,00,00,00,00,05,14,00,00,00,01,02,00,00,00,00,00,05,20,00,00,00, \ 20,02,00,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00
[HKEY_LOCAL_MACHINE \ SOFTWARE \类\的AppID \ YOURAPP.exe] “的AppID”= “{C6BFD646-3DF0-4DE5-B7AF-5FFFACB844A5}”
将上述内容复制到文本文件中。
将'YOURAPP.EXE'替换为您的可执行文件名
可选择替换GUID(我为您创建了一个新的)
- 的文本文件
保存扩展名为.reg
双击该文件。
- 醇>
您会看到一条消息'.....。中包含的密钥和值已成功添加到注册表中。'
有了这个,我不需要从我的应用程序调用CoInitializeSecurity。
答案 1 :(得分:-1)
你需要在
之前调用CoInitializeSecurity这里有更多信息。我花了几周时间寻找解决方案:)
https://social.msdn.microsoft.com/Forums/en-US/58da3fdb-a0e1-4161-8af3-778b6839f4e1/