C#下串口编程测试

C#下串口编程测试

本文博客链接:http://blog.csdn.net/jdh99,作者:jdh,转载请注明.

软件平台:C# + WINCE6.0

硬件平台:tiny6410

界面设计:

设计思路:

1.点击发送键则发送文本

2.串口接收到数据包则启动一个事件,在事件中处理数据包

注意:

1.接收事件中调用主线程的控件会导致不安全,所以用了托管的方式调用

2.直接调用了C#中的串口控件,波特率等在属性页面中设置

源代码:

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;
using System.Threading;

namespace test_serialport
{
    public partial class Form1 : Form
    {
        //接收数组
        Byte[] recv_bytes;

        public Form1()
        {
            InitializeComponent();
            //打开串口
            serialPort1.Open();
            //开启接收线程
            //Thread recv_udp = new Thread(new ThreadStart(recv_udp_func));
            //recv_udp.Start();
            //添加事件注册  
            serialPort1.DataReceived += recv_udp_func;
        }

        //发送按键按下
        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.Write(textBox1.Text);
        }

        //接收事件
        void recv_udp_func(object sender, SerialDataReceivedEventArgs e)
        {
            //获取缓冲区字节数
            int n = serialPort1.BytesToRead;
            //声明一个临时数组存储当前来的串口数据
            byte[] buf = new byte[n];
            serialPort1.Read(buf, 0, n);//读取缓冲数据
            this.Invoke((EventHandler)delegate { this.textBox2.Text = Encoding.Default.GetString(buf, 0, n);});
        }
    }
}