无法打开COM端口Unity

I'm using an arduino board to communicate serial data into Unity. I had this working using the read analog voltage sample that comes with the board and the output from that happily displayed in the debug log.However, now when I run Unity i get the following error:I've changed my COM port to be a variety of numbers but they all come back with the same error.My serial port reading code is thus:SerialPort stream = null;string data = "Ready";private float DataTimer = 2.0f;private float TimeToCheckStream = 0.1f; // check data every secondpublic string COMPort = "";public int baudRate = 9600;void Awake (){ stream = new SerialPort(COMPort,baudRate); //originally 9600 Debug.Log ("Initialized stream"); LogWriter writer = LogWriter.Instance; writer.WriteToLog( COMPort);}void Start (){// LogWriter writer = LogWriter.Instance;// writer.WriteToLog("Testing test"); if ( stream != null ) { if ( stream.IsOpen ) // close if already open { stream.Close(); Debug.Log ("Closed stream"); } stream.Open(); Debug.Log ("Opened stream"); } else { Debug.Log ("ERROR: Uninitialized stream"); }}void Update (){ if(DataTimer < TimeToCheckStream) { DataTimer += Time.deltaTime; } else { DataTimer = 0.0f; if ( stream != null ) { if ( stream.IsOpen ) { // if stream is open do things in here stream.ReadLine(); Debug.Log(stream.ReadLine().ToString()); } } else { Debug.Log ("NULL stream"); } }}void OnGUI (){ GUI.Label ( new Rect(500,10,300,100), data );}void OnApplicationQuit (){ if ( stream != null ) { stream.Close(); }}Is there any reason as to why my COM port would suddenly decide to close itself? 解决方案 You can access your COM11 with replacing it with \\.\COM11You must write:myPort= new SerialPort("\\\\.\\COM11",9600);Take a look at Microsoft's Website 这篇关于无法打开COM端口Unity的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！