基于单片机串口通信的上位机和下位机首先亮出C#的源程序吧。主要界面：只是作为简单的运用，可以扩展的。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.Timers;namespace 单片机功能控制{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } SerialPort sp = new SerialPort(); private void button1_Click(object sender, EventArgs e) { String str1 = comboBox1.Text;//串口号 String str2 = comboBox2.Text;//波特率 String str3 = comboBox3.Text;//校验位 String str4 = comboBox5.Text;//停止位 String str5 = comboBox4.Text;//数据位 Int32 int2 = Convert.ToInt32(str2);//将字符串转为整型 Int32 int5 = Convert.ToInt32(str5);//将字符串转为整型 groupBox3.Enabled = true;//LED控制界面变可选 try { if (button1.Text == "打开串口") { if (str1 == null) { MessageBox.Show("请先选择串口！", "Error"); return; } sp.Close(); sp = new SerialPort(); sp.PortName = comboBox1.Text;//串口编号 sp.BaudRate = int2;//波特率 switch (str4)//停止位 { case "1": sp.StopBits = StopBits.One; break; case "1.5": sp.StopBits = StopBits.OnePointFive; break; case "2": sp.StopBits = StopBits.Two; break; default: MessageBox.Show("Error：参数不正确", "Error"); break; } switch (str3) { case "NONE": sp.Parity = Parity.None; break; case "ODD": sp.Parity = Parity.Odd; break; case "EVEN": sp.Parity = Parity.Even; break; default: MessageBox.Show("Error：参数不正确", "Error"); break; } sp.DataBits = int5;//数据位 sp.Parity = Parity.Even;//设置串口属性 sp.Open();//打开串口 button1.Text = "关闭串口"; textBox1.Text = Convert.ToString(sp.PortName) + "已开启！"; } else { sp.Close(); button1.Text = "打开串口"; groupBox3.Enabled = false;//LED控制界面变灰色 textBox1.Text = Convert.ToString(sp.PortName)...
