[游戏开发]Unity 串口通信(带下拉列表)

整体代码：

using System.Collections;
using System.Collections.Generic;
using System.IO.Ports;
using UnityEngine;
using UnityEngine.UI;
public class chuankou : MonoBehaviour
{
    //可用串口号缓存
    private string[] sps;
    //串口号缓存
    private string portName;
    //波特率
    private int baudRate = 9600;
    //开关串口判断
    private bool close = false;
    //开关串口提示
    public Text close_text;
    //串口号文本
    public Text portnames_text;
    //获取下拉列表
    public Dropdown dp;
    //连接状态显示
    public GameObject close_gameobject; 
    //实例化一个串口
    public SerialPort serialPort = new SerialPort();
    //获取是否成功文本
    public Text Great;
    //获取当前计算机串口名称
    public Text chuankouName;
    //显示与编辑内容
    public InputField xianshi,bianji;
    void Start()
    {
        //获取串口号     
        sps = SerialPort.GetPortNames();
        //赋值串口号
        portName = sps[0];
        //显示串口号
        portnames_text.text = portName;
        //显示当前计算机串口名称
        chuankouName.text = "当前计算机串口名：" + SerialPort.GetPortNames().ToString();
    }

    //搜索设备
    public void Get_SerialPort_Names()
    {
        //重置数组和下拉列表防止重复
        for (int i = 0; i < sps.Length; i++)
        {
            sps[i] = "";
            dp.ClearOptions();
        }
        //赋值给下拉列表
        for (int i = 0; i < sps.Length; i++)
        {
            sps = SerialPort.GetPortNames();
            List<string> inside = new List<string> { sps[i] };
            dp.AddOptions(inside);
        }
        //获取串口号     
        sps = SerialPort.GetPortNames();
        //显示串口号
        portnames_text.text = portName;
    }

    //开关串口
    public void Open_SerialPort()
    {
        if (!close)
        {
            try
            {
                //定义串口属性变量
                serialPort = new SerialPort(portName, baudRate);
                //开启串口
                serialPort.Open();
                Great.text = "已打开串口";
                close_text.text = "关闭串口";
                close_gameobject.GetComponent<Image>().color = Color.green;
                close = true;
            }
            //报错处理
            catch (System.Exception)
            {
                //关闭串口
                serialPort.Close();
                close_gameobject.GetComponent<Image>().color = Color.red;
                throw;
            }
        }
        else
        {
            //关闭串口
            serialPort.Close();
            Great.text = "已关闭串口";
            close = false;
            close_text.text = "打开串口";
            close_gameobject.GetComponent<Image>().color=Color.red;
        }
    }
    public void XianShi()//模拟串口通信
    {
        xianshi.text += bianji.text+",";
    }
    public void Exit()//退出
    {
        Application.Quit();
    }
}

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