C#基于SerialPort类实现串口通讯详解
本文实例为大家分享了C#基于SerialPort类实现串口通讯的具体代码,供大家参考,具体内容如下
最终效果
窗体设置:
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO.Ports; using System.Threading; using System.Windows.Forms; namespace SerialCommunication { public partial class Form1 : Form { System.Threading.SynchronizationContext m_SyncContext = null; SerialPort serialPort = null; ToHexadecimalString toHexadecimalString = new ToHexadecimalString(); public Form1() { m_SyncContext = SynchronizationContext.Current; InitializeComponent(); } //Data initialization private void Form1_Load(object sender, EventArgs e) { string[] ports = SerialPort.GetPortNames(); SerialPortNumber.Items.AddRange(ports); SerialPortNumber.SelectedIndex = SerialPortNumber.Items.Count > 0 ? 0 : -1; BaudRateCom.Text = "9600"; //Set parameters CheckBitCom.Text = "None"; DataBitCom.Text = "8"; StopBitCom.Text = "One"; } //Send data private void Send_Click(object sender, EventArgs e) { try { //Send data and handle exceptions byte[] bytes = new byte[SendMessage.Text.Length]; bytes = Encoding.Default.GetBytes(SendMessage.Text); serialPort.Write(bytes, 0, bytes.Length); } catch (Exception error) { MessageBox.Show(error.Message); } } // Byte to hexadecimal string //Clear data private void Clear_Click(object sender, EventArgs e) { ReceiveMessage.Text = ""; } private void Open_Click(object sender, EventArgs e) { string portName = SerialPortNumber.Text; int buadRate = int.Parse(BaudRateCom.Text); Parity parity = 0; switch (CheckBitCom.Text) { case "None": parity = Parity.None; break; case "Odd": parity = Parity.Odd; break; case "Even": parity = Parity.Even; break; case "Mark": parity = Parity.Mark; break; case "Space": parity = Parity.Space; break; } int dataBit = int.Parse(DataBitCom.Text); StopBits stopBits = 0; switch (StopBitCom.Text) { case "None": stopBits = StopBits.None; break; case "One": stopBits = StopBits.One; break; case "Tow": stopBits = StopBits.Two; break; case "OnePointFive": stopBits = StopBits.OnePointFive; break; } try { if (Open.Text == "Open") { serialPort = new SerialPort(portName, buadRate, parity, dataBit, stopBits); serialPort.Open(); Open.Text = "Close"; } else if (Open.Text == "Close") { serialPort.Close(); Open.Text = "Open"; } } catch (Exception errror) { MessageBox.Show(errror.Message); } serialPort.DataReceived += onDataReceived; } private void onDataReceived(object sender, SerialDataReceivedEventArgs e) { try { Byte[] bytes = new byte[serialPort.BytesToRead]; serialPort.Read(bytes, 0, serialPort.BytesToRead); m_SyncContext.Post(new SendOrPostCallback((obj) => { ReceiveMessage.AppendText(Encoding.Default.GetString(bytes)); }), bytes); } catch (Exception error) { MessageBox.Show(error.Message); } } } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
赞 (0)