蓝牙通信b/w Android和物联网设备

Question

我正在尝试建立Android和IOT (英特尔伽利略)设备之间的蓝牙通信。

IOT端的代码(我将它作为客户端)，它将发送数据到android，但这里的一个端口号是硬编码的。这是用python编写的。

def record_transmit_to_subscriber(self, subscriber, message):
    server_addr = subscriber
    port = 6 
    client_socket = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
    try:
        client_socket.connect((server_addr, port))

        client_socket.send(message)

        client_socket.close()
        return True
    except Exception as e:
        print "Unable to make connection with subscriber", subscriber
        return False

现在到了android (服务器)端：

private static UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
try {
       BluetoothServerSocket tmp = null;
        BluetoothAdapter mBluetoothAdapter =    BluetoothAdapter.getDefaultAdapter();
        try {
            // MY_UUID is the applications UUID string, also used by the client code
            tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
        } catch (IOException e) {
            GlobalUtils.writeLogFile("Error in BLE Listening " + e.getMessage());
        }
        mmServerSocket = tmp;
    } catch (Exception e){
        GlobalUtils.writeLogFile("Exception in Accept Thread " + e.getMessage());
    }

我确实认为这段代码中存在一些问题，在客户端它使用端口号，而在服务器端它使用uuid。有没有人可以纠正一下如何修改此代码以使连接工作。

Answer 1

你似乎忘了创建套接字和流：

try {
    BluetoothDevice bluetoothDevice = BluetoothAdapter.getDefaultAdapter().getRemoteDevice("<MAC_address_of_your_device>");
    mSocket = bluetoothDevice.createInsecureRfcommSocketToServiceRecord(MY_UUID);

    mSocket.connect();
} catch (IOException e) {
   Log.e(TAG, "Fail connect");
}

// Get the input and output streams for BT socket
try {
    inStream = mSocket.getInputStream();
    outStream = mSocket.getOutputStream();
} catch (IOException e) {
    Log.e(TAG, "Fail to open socket streams");
}

然后，您可以创建用于从inStream读取数据的Thread (例如，inStream.read(<data_buffer>); )和用于将数据写入outStream的Thread (例如，outStream.write(<data_buffer>); outStream.flush();)。