Tizen Watch 和 iOS 连接问题

Question

我的要求是创建一个将文本从 iOS 设备传输到 Tizen 可穿戴设备的应用程序。根据 tizen 文档，我使用 BLE 进行通信。 在我们的最终架构中，Tizen 作为中心，iOS 作为外围设备，初始连接将是从 tizen 到 iOS 应用程序。

对于 Tizen：

var remoteDevice = null;
var adapter = tizen.bluetooth.getLEAdapter();



function onDeviceFound(device) {
     if (remoteDevice === null) {
       remoteDevice = device;
       console.log('Found device ' + device.name + '. Connecting...');
      device.connect(connectSuccess, connectFail);
    }
 adapter.stopScan();
 }

function connectFail(error) {
    console.log('Failed to connect to device: ' + e.message);
}

function connectSuccess() {
    console.log('Connected to device');
    var serviceUUIDs = remoteDevice.uuids;
    **var gattService = remoteDevice.getService(serviceUUIDs[0]); //error in this one**
    var property = gattService.characteristics[0];
}

adapter.startScan(onDeviceFound);

对于 iOS BLE 连接：

private func setupPeripheral() {
   let transferCharacteristic = CBMutableCharacteristic(type: TransferService.characteristicUUID, properties: [.notify, .writeWithoutResponse],value: nil,permissions: [.readable, .writeable])
   let transferService = CBMutableService(type: TransferService.serviceUUID, primary: true)
    transferService.characteristics = [transferCharacteristic]
    peripheralManager.add(transferService)
    self.transferCharacteristic = transferCharacteristic
}

peripheralManager.startAdvertising([CBAdvertisementDataServiceUUIDsKey: [TransferService.serviceUUID]])

func peripheralManagerDidUpdateState(_ peripheral: CBPeripheralManager) {
        switch peripheral.state {
        case .poweredOn:
            os_log("CBManager is powered on")
            setupPeripheral()
        case .poweredOff:
            os_log("CBManager is not powered on")
            return
        case .resetting:
            os_log("CBManager is resetting")
            return
        case .unauthorized:
           os_log("Unexpected authorization")
            return
        case .unknown:
            os_log("CBManager state is unknown")
            return
        case .unsupported:
            os_log("Bluetooth is not supported on this device")
            return
        @unknown default:
            os_log("A previously unknown peripheral manager state occurred")
            return
        }
    }
    func peripheralManager(_ peripheral: CBPeripheralManager, central: CBCentral, didSubscribeTo characteristic: CBCharacteristic) {
  os_log("Central subscribed to characteristic")
        connectedCentral = central
    }
func peripheralManager(_ peripheral: CBPeripheralManager, central: CBCentral, didUnsubscribeFrom characteristic: CBCharacteristic) {
    os_log("Central unsubscribed from characteristic")
    connectedCentral = nil
}

通过实现 remoteDevice.getService(remoteDevice.uuids[0]) 代码我收到错误 device not found 异常。

此链接中也发布了相同的问题： https://developer.tizen.org/ko/forums/web-application-development/central-peripharal-client-server-architecture-ble-communication-tizen-wearable-ios-not-working?langredirect=1

如果有人遇到过类似的挑战并找到所需的解决方案，请提供您的宝贵意见，因为这对我们来说是一种阻碍。

提前致谢。

Answer 1

我是一名 Tizen 开发人员，从未开发过 iOS 应用程序。我假设 iOS 应用：

• 使用 TransferService UUID 创建一个 GATT 服务器
• 开始广告TransferService UUID
• 只宣传 TransferService UUID（即它应该在 Tizen 应用程序代码中的 remoteDevice.uuids[0] 中）
• 允许 BLE 客户端连接到服务器 您可以验证该应用是否可以使用nRF Connect app 进行假设。

请确保您的 Tizen 设备在扫描中找到您要连接的 Apple BLE 设备。 您的 Tizen 应用程序连接到它找到的第一个 BLE 设备。只要 Apple 设备是唯一可见的 BLE 设备就可以了。 为了确保 Tizen 客户端连接到正确的设备，您需要过滤掉 onDeviceFound 中的其他设备。例如，连接到具有特定蓝牙名称的设备：

function onDeviceFound(device) {
  if (device.name=== [iOS BLE device name]) {
    remoteDevice = device;
    console.log('Found device ' + device.name + '. Connecting...');
    device.connect(connectSuccess, connectFail);
  }
  adapter.stopScan();
}