串口通信助手

C#语言基础

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开发语言：C#
实例大小：0.10M
下载次数：61
浏览次数：477
发布时间：2017-09-18
实例类别：C#语言基础
发布人：zyxyorz
文件格式：.rar
所需积分：2

实例介绍

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【实例简介】

c#基于serialport的串口通信程序，支持16进制的发送与接收

【实例截图】

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【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;//新调用的类所在的命名空间
using SerialPort;

namespace SerialPort
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Control.CheckForIllegalCrossThreadCalls = false;
        }

        //发送按钮
        private void button1_Click(object sender, EventArgs e)
        {

            //对于中文的话,要先对其进行编码,将其转换成 _Base64String ,否则你得不到中文字符串的
            // byte[] data = Encoding.Unicode.GetBytes(textBox1.Text);
            // string str = Convert.ToBase64String(data);
            if (button3.Text == "打开串口")
                MessageBox.Show("请打开一个串口", "系统提示");
            else
            {

                string str = textBox1.Text;
                if (checkBox2.Checked)
                {
                    byte[] send = HEXstring_to_bytys(str);
                    serialPort1.Write(send, 0, send.Length);
                }
                else
                {
                    //byte[] send = HEXstring_to_bytys(str);
                    //serialPort1.Write(Encoding.Unicode.GetString(send));
                    //serialPort1.Write(str);
                    Encoding gb = System.Text.Encoding.GetEncoding("gb2312");
                    byte[] bytes = gb.GetBytes(str);
                    serialPort1.Write(bytes, 0, bytes.Length);
                }
            }

        }
        private byte[] HEXstring_to_bytys(string str)
        {
            String str1 = "0123456789ABCDEF";
            char[] hexs = str.ToCharArray();//将字符串转换为字符数组;
            byte[] bytes;
            bytes = new byte[str.Length / 2];
            int n;
            for (int i = 0; i < bytes.Length; i )
            {
                n = str1.IndexOf(hexs[2 * i]) * 16;
                n = str1.IndexOf(hexs[2 * i 1]);
                bytes[i] = (byte)(n & 0xff);
            }
            return bytes;
        }
        //接收事件
        private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            if (checkBox1.Checked)
            {
                int n = serialPort1.BytesToRead;

byte[] byteThird = new byte[n];
serialPort1.Read(byteThird, 0, n);

                string message = "";
                for (int i = 0; i < n; i )
                {

                    if (byteThird[i].ToString("X").Length == 1)
                        message = "0" byteThird[i].ToString("X");
                    else
                        message = byteThird[i].ToString("X");

}
textBox2.Text = message;

            }
            else
            {
                int ilen = serialPort1.BytesToRead;
                byte[] bytes = new byte[ilen];
                serialPort1.Read(bytes, 0, ilen);
                string xx = System.Text.Encoding.Default.GetString(bytes); //xx="中文";
                textBox2.Text = xx;
               // textBox2.Text = serialPort1.ReadExisting();

}

        }
        private void Form1_Load(object sender, EventArgs e)
        {

            //serialPort1.PortName = "com3";//串口的portname
            //serialPort1.BaudRate = 9600;//串口的波特率
            // serialPort1.Open();
            comboBox1.SelectedItem = comboBox1.Items[0];
            comboBox2.SelectedItem = comboBox2.Items[0];
            comboBox3.SelectedItem = comboBox3.Items[0];
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            //关闭串口
            serialPort1.Close();
        }

private void button3_Click(object sender, EventArgs e)
{

            try
            {
                if (!serialPort1.IsOpen)
                {
                    // Console.WriteLine(comboBox1.Text);

                    serialPort1.PortName = comboBox1.Text;
                    serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text);
                    if (comboBox3.Text.Equals("奇校验"))
                        serialPort1.Parity = System.IO.Ports.Parity.Odd;
                    if (comboBox3.Text.Equals("偶校验"))
                        serialPort1.Parity = System.IO.Ports.Parity.Even;
                    serialPort1.Open();
                    // serialPort1.DataReceived = s_DataReceived;
                    button3.Text = "关闭串口";
                    //MessageBox.Show("串口已打开");
                }
                else
                {
                    serialPort1.Close();
                    serialPort1.DataReceived -= serialPort1_DataReceived;
                    button3.Text = "打开串口";
                }
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.ToString());
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            textBox2.Text = "";
        }

        private void button4_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
        }

        private string StringToHexString(string s, Encoding encode)
        {
            byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组
            string result = string.Empty;
            for (int i = 0; i < b.Length; i )//逐字节变为16进制字符，以%隔开
            {
                if (Convert.ToString(b[i], 16).Length == 1)
                    result = "%0" Convert.ToString(b[i], 16);
                else
                    result = "%" Convert.ToString(b[i], 16);
            }
            return result;
        }
        private string HexStringToString(string hs, Encoding encode)
        {
            //以%分割字符串，并去掉空字符
            string[] chars = hs.Split(new char[] { '%' }, StringSplitOptions.RemoveEmptyEntries);
            byte[] b = new byte[chars.Length];
            //逐个字符变为16进制字节数据
            for (int i = 0; i < chars.Length; i )
            {
                b[i] = Convert.ToByte(chars[i], 16);
            }
            //按照指定编码将字节数组变为字符串
            return encode.GetString(b);
        }

}
}

标签： 串口通信串口通信

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