unity基础开发----unity串口通信

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using UnityEngine;using System.Collections;using System.IO.Ports;using System;using System.Collections.Generic;using System.Threading;public class PortControl : MonoBehaviour {public GUIText gui;    //定义基本信息public string portName = "COM2";public int baudRate = 9600;public Parity parity = Parity.None;public int dataBits = 8;public StopBits stopBits = StopBits.One;int[] data = new int[6];//用于存储6位数据SerialPort sp = null;Thread dataReceiveThread;    //发送string message = "";    //byte[] message=new byte[8];void Start(){OpenPort();dataReceiveThread = new Thread(new ThreadStart(DataReceiveFunction));dataReceiveThread.Start();}void Update(){string str = "";for(int i=0; i<data.Length; i++){str += data[i].ToString() + " ";}gui.text = str;        Debug.Log(str);}public void OpenPort(){sp = new SerialPort(portName, baudRate, parity, dataBits, stopBits);sp.ReadTimeout = 400;try{sp.Open();}catch(Exception ex){Debug.Log(ex.Message);}}public void ClosePort(){try{sp.Close();}catch(Exception ex){Debug.Log(ex.Message);}}public void WriteData(string dataStr){if(sp.IsOpen){sp.Write(dataStr);}}void OnApplicationQuit(){ClosePort ();}void DataReceiveFunction(){byte[] buffer = new byte[128];int bytes = 0;        //定义协议int flag0 = 0xFF;int flag1 = 0xAA;int index = 0;//用于记录此时的数据次序while (true){if (sp != null && sp.IsOpen){try{bytes = sp.Read(buffer, 0, buffer.Length);for(int i=0; i<bytes; i++){if(buffer[i]==flag0 || buffer[i]==flag1){index = 0;//次序归0 continue;}else{if(index>=data.Length)index = data.Length-1;//理论上不应该会进入此判断，但是由于传输的误码，导致数据的丢失，使得标志位与数据个数出错data[index] = buffer[i];//将数据存入data中index++;}}}catch (Exception ex){if (ex.GetType() != typeof(ThreadAbortException)){Debug.Log(ex.Message);}}}Thread.Sleep(10);}}void OnGUI(){message = GUILayout.TextField(message);if(GUILayout.Button("Send Message")){WriteData(message);}        string by=  "XX AA 03 31 20 51 00 00";        if (GUILayout.Button("Send",GUILayout.Height(50)))        {            WriteData(by);        }}}
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