使用COM口与XBee模块通信的C#程序/使用USB串行COM口

Question

我正在编写一个使用 USB 串口 COM 端口传输和接收数据的 C# 程序。组件是 XBEE 模块，我想要访问它，但我编写的代码在我的计算机上没有检测到任何串口。请有经验的人帮助我找出错误。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;

namespace WindowsFormsApplication3
{
    public partial class Test : Form
    {
        private StringBuilder receivedData = new StringBuilder();

        public Test()
        {
            InitializeComponent();
        }

        private void Test_Load(object sender, EventArgs e)
        {
            Array ports = System.IO.Ports.SerialPort.GetPortNames();
            for (int x = 0; x <= ports.Length; comboBox1.Items.Add(ports.GetValue(x))) ;
            timer1.Start();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = comboBox1.Text;
            if (!serialPort1.IsOpen)
            {
                serialPort1.Open();
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (serialPort1.IsOpen)
            {
                serialPort1.Close();
            }
        }

        private void Test_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (serialPort1.IsOpen)
            {
                serialPort1.Close();
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (serialPort1.IsOpen)
            {
                serialPort1.Write(textBox2.Text + "\n\r");
            }
        }

        private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            receivedData.Append(serialPort1.ReadExisting());
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            textBox1.Text = receivedData.ToString();
        }
    }
}

- Asim Naseer

---

你尝试过 https://code.google.com/p/xbee-api-sharp/ 吗？这个对我来说可以直接使用我的Xbee模块。 - lyncas

Answer 1

您需要设置串口的正确参数以匹配设备的设置。您是否安装了XCTU？请注意“搜索设备”对话框中的设置 - 假设它确实找到了您的设备！

对我来说，我发现我实际上只需要设置波特率：

var serialPort = new SerialPort(portName);
serialPort.BaudRate = 115200;
serialPort.Open();
// win!

- jdpilgrim