如何连接到 Gear S3 上的蓝牙服务？

Question

我正在用 C# 为 Gear S3 编写一个网络应用程序，并为 UWP 编写一个配套的 Win-App。我想要它做什么：S3 作为 BT 服务器，发送数据，Win-App 作为客户端，应该接收数据。在 Tizen 中，我使用了 registerRfcommServiceByUUID() 函数，如下所示：

function publishTransferService() {

if(remoteDevice.isConnented){
    console.log("Connection Status: " + remoteDevice.isConnected);
    var TRANS_SERVICE_UUID = '5BCE9431-6C75-32AB-AFE0-2EC108A30860';
    adapter.registerRFCOMMServiceByUUID(TRANS_SERVICE_UUID, 'My Service', ServiceSuccessCb,
            function(e) {
        console.log( "Could not register service record, Error: " + e.message);
    });
}else{
    console.error("Connection Status: " + remoteDevice.isConnected);
    }

在 C# 中，我尝试按如下方式连接到服务：

        //to ulong converted MAC-Address of the Gear
        ulong gearBtAddress = 145914022804881;
        //create device-instance of the gear
        BluetoothDevice gearDevice = await  BluetoothDevice.FromBluetoothAddressAsync(gearBtAddress);
        //list the services found on the gear and connect to the one with
        //the same uuid as in tizen
        var gearServices = await gearDevice.GetRfcommServicesAsync();
        foreach (var service in gearServices.Services)
        {
            if(service.ServiceId == RfcommServiceId.FromUuid(Guid.Parse("5BCE9431-6C75-32AB-AFE0-2EC108A30860")))
            {
                _service = await RfcommDeviceService.FromIdAsync(service.ToString());
            }

        }

我面临的问题是，C# 找不到想要的 Uuid，尽管它找到了其他几个 uuid。没看出来哪里丢了？

提前致谢。

Answer 1

我自己解决了，问题是UUID没有缓存。添加以下内容即可：

        var cacheMode = BluetoothCacheMode.Uncached;
        var gearServices = await gearDevice.GetRfcommServicesAsync(cacheMode);

如何连接到 Gear S3 上的蓝牙服务？

How can I connect to a Bluetooth service on Gear S3?

c#

bluetooth

tizen-wearable-sdk

tizen-web-app