• 串口


    发送案例:

    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;
    
    namespace WindowsFormsApplication2
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
            // 窗体创建时执行
            private void Form1_Load(object sender, EventArgs e)
            {
                string str_num;
                // 构建combobox1列表
                for(int i = 0; i < 256; i++)
                {
                    str_num = i.ToString("x").ToUpper();
                    if(str_num.Length == 1)
                    {
                        str_num = "0" + str_num;
                    }
                    comboBox1.Items.Add("0x" + str_num);
                }
                comboBox1.Text = "0x00";  // 设置默认值
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                string str_num = comboBox1.Text;  // 获取combobox1的值
                string Ox_num = str_num.Substring(2, 2);  // 截取十六进制数值
                byte[] buffer = new byte[1];  // 定义一个字节的数据
                buffer[0] = Convert.ToByte(Ox_num, 16);  // 将16进制的字符串转换为byte类型
                // 防止出错
                try
                {
                    serialPort1.Open();  // 打开串口
                    serialPort1.Write(buffer, 0, 1);  // 写入
                    serialPort1.Close();  // 关闭串口
                }
                catch(Exception err)
                {
                    if (serialPort1.IsOpen)
                    {
                        // 如果串口为开的,那么关闭
                        serialPort1.Close();
                    }
                    MessageBox.Show(err.ToString(), "错误提示");
                }
            }
        }
    }
    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;
    
    namespace WindowsFormsApplication2
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
            // 窗体创建时执行
            private void Form1_Load(object sender, EventArgs e)
            {
                string str_num;
                // 构建combobox1列表
                for(int i = 0; i < 256; i++)
                {
                    str_num = i.ToString("x").ToUpper();
                    if(str_num.Length == 1)
                    {
                        str_num = "0" + str_num;
                    }
                    comboBox1.Items.Add("0x" + str_num);
                }
                comboBox1.Text = "0x00";  // 设置默认值
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                string str_num = comboBox1.Text;  // 获取combobox1的值
                string Ox_num = str_num.Substring(2, 2);  // 截取十六进制数值
                byte[] buffer = new byte[1];  // 定义一个字节的数据
                buffer[0] = Convert.ToByte(Ox_num, 16);  // 将16进制的字符串转换为byte类型
                // 防止出错
                try
                {
                    serialPort1.Open();  // 打开串口
                    serialPort1.Write(buffer, 0, 1);  // 写入
                    serialPort1.Close();  // 关闭串口
                }
                catch(Exception err)
                {
                    if (serialPort1.IsOpen)
                    {
                        // 如果串口为开的,那么关闭
                        serialPort1.Close();
                    }
                    MessageBox.Show(err.ToString(), "错误提示");
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/namejr/p/10306726.html
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