Question

我有无线Proto Shield的Arduino Uno R3，我想与Windows Phone 8进行通信。

我正在使用示例Windows_Phone_8_communicating_with_Arduino_using_Bluetooth

中的基础

这是一种异步接收方法：

private async void ReceiveMessages(object sender, DoWorkEventArgs e)
    {
        try
        {
            while (true)
            {

                // Read first byte (length of the subsequent message, 255 or less). 
                uint sizeFieldCount = await dataReader.LoadAsync(1);
                if (sizeFieldCount != 1)
                {
                    // The underlying socket was closed before we were able to read the whole data. 
                    return;
                }

                // Read the message. 
                uint messageLength = dataReader.ReadByte();
                uint actualMessageLength = await dataReader.LoadAsync(messageLength);
                if (messageLength != actualMessageLength)
                {
                    // The underlying socket was closed before we were able to read the whole data. 
                    return;
                }
                // Read the message and process it.
                string message = dataReader.ReadString(actualMessageLength);
                MessageReceived(message);
            }
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
        }

    }

我有一些方法可以从Arduino发送回信息，（SendCarId，SendRideId）

如果我尝试自己发送每个命令，它会将（从Arduino）发回给我正确的数据。

但是当我一个接一个地发送请求时，它只响应第一个而不是第二个。（它永远不会第二次进入ReceiveMessages方法）

任何人都知道这是什么问题？

Answer 1

我发现如果我在得到答案时终止连接，然后，我可以初始化新连接（可能不是最有效的解决方案，但它正在工作）

  public void Terminate()
    {
        connected = false;

        dataReadWorker.DoWork -= new DoWorkEventHandler(ReceiveMessages);

        if (socket != null)
        {
            socket.Dispose();
            socket = null;
        }
        if (dataReadWorker != null)
        {
            dataReadWorker.CancelAsync();

        }
    }


public void Initialize()
    {
        socket = new StreamSocket();
        dataReadWorker = new BackgroundWorker();
        dataReadWorker.WorkerSupportsCancellation = true;
        dataReadWorker.DoWork += new DoWorkEventHandler(ReceiveMessages);
    }

在Windows Phone 8中没有从arduino通过蓝牙接收多个数据

1 个答案: