C＃读Arduino

我正在尝试创建一个从Arduino读取传出信号的应用程序，但我无法在C＃ Windows窗体中使用它 ，只能在控制台中使用。 我的C＃Windows窗体代码是错误的吗？ 我调试时没有出现任何错误，但这并不意味着我没有忘记一些事情。

这是我的代码：

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO.Ports; using System.Threading; namespace CommunicateWithArduino { public partial class Form1 : Form { public static System.IO.Ports.SerialPort port; delegate void SetTextCallback(string text); private BackgroundWorker hardWorker; private Thread readThread = null; public Form1() { InitializeComponent(); hardWorker = new BackgroundWorker(); sendBtn.Enabled = false; } private void btnConnect_Click(object sender, EventArgs e) { System.ComponentModel.IContainer components = new System.ComponentModel.Container(); port = new System.IO.Ports.SerialPort(components); port.PortName = comPort.SelectedItem.ToString(); port.BaudRate = Int32.Parse(baudRate.SelectedItem.ToString()); port.DtrEnable = true; port.ReadTimeout = 5000; port.WriteTimeout = 500; port.Open(); readThread = new Thread(new ThreadStart(this.Read)); readThread.Start(); this.hardWorker.RunWorkerAsync(); btnConnect.Text = ""; btnConnect.Enabled = false; comPort.Enabled = false; sendBtn.Enabled = true; } private void Form1_Load(object sender, EventArgs e) { foreach (string s in SerialPort.GetPortNames()) { comPort.Items.Add(s); } if (comPort.Items.Count > 0) comPort.SelectedIndex = comPort.Items.Count-1; else comPort.SelectedIndex = 0; baudRate.Items.Add("2400"); baudRate.Items.Add("4800"); baudRate.Items.Add("9600"); baudRate.Items.Add("14400"); baudRate.Items.Add("19200"); baudRate.Items.Add("28800"); baudRate.Items.Add("38400"); baudRate.Items.Add("57600"); baudRate.Items.Add("115200"); baudRate.SelectedIndex = 2; } private void sendBtn_Click(object sender, EventArgs e) { if (port.IsOpen) { port.Write(sendText.Text); } } private void SetText(string text) { if (this.receiveText.InvokeRequired) { SetTextCallback d = new SetTextCallback(SetText); this.Invoke(d, new object[] { text }); } else { this.receiveText.Text += "Text: "; this.receiveText.Text += text; this.receiveText.Text += Environment.NewLine; } } public void Read() { while (port.IsOpen) { try { if (port.BytesToRead > 0) { string message = port.ReadLine(); this.SetText(message); } } catch (TimeoutException) { } } } private void Form1_FormClosed(object sender, FormClosedEventArgs e) { try { if(!(readThread == null)) readThread.Abort(); } catch (NullReferenceException) { } try { port.Close(); } catch (NullReferenceException) { } } } } 

Answer 1

默认情况下，ReadLine方法将阻塞，直到收到一行。 你的Arduino程序是否发送了一条线？ 在运行程序时是否关闭了Arduino串行监视程序？

我会更改为port.ReadChar，直到您确认收到字符为止。