如何从串口读取和写入 [英] How to Read and Write from the Serial Port

问题描述

我刚刚开始学习如何通过 C# GUI 从我的硬件发送和接收数据.

I just started learning how to send and receive data from my hardware through the C# GUI.

谁能详细说明如何读取串口数据?

Can anyone please write a detail how to read data from the serial port?

推荐答案

C#.NET中的SerialPort(RS-232串行COM端口)
本文介绍了如何使用 SerialPort 类在 .NET 中读取和写入数据，确定您的机器上可用的串行端口，以及如何发送文件.它甚至涵盖了端口本身的引脚分配.

SerialPort (RS-232 Serial COM Port) in C# .NET
This article explains how to use the SerialPort class in .NET to read and write data, determine what serial ports are available on your machine, and how to send files. It even covers the pin assignments on the port itself.

示例代码:

using System;
using System.IO.Ports;
using System.Windows.Forms;

namespace SerialPortExample
{
  class SerialPortProgram
  {
    // Create the serial port with basic settings
    private SerialPort port = new SerialPort("COM1",
      9600, Parity.None, 8, StopBits.One);

    [STAThread]
    static void Main(string[] args)
    { 
      // Instatiate this class
      new SerialPortProgram();
    }

    private SerialPortProgram()
    {
      Console.WriteLine("Incoming Data:");

      // Attach a method to be called when there
      // is data waiting in the port's buffer
      port.DataReceived += new 
        SerialDataReceivedEventHandler(port_DataReceived);

      // Begin communications
      port.Open();

      // Enter an application loop to keep this thread alive
      Application.Run();
    }

    private void port_DataReceived(object sender,
      SerialDataReceivedEventArgs e)
    {
      // Show all the incoming data in the port's buffer
      Console.WriteLine(port.ReadExisting());
    }
  }
}

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