C#编写简易的上位机
标题C#编写简易的上位机
代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace chuankou1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
for (int i = 1; i < 20; i++)
{
comboBox1.Items.Add("COM" + i.ToString());
}
comboBox1.Text = "COM1";//串口号默认值
comboBox2.Text = "4800";//波特率默认值
//很重要
serialPort1.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);//必须手动添加
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)//串口数据接收事件
{
if (!radioButton3.Checked)//如果接收模式为字符模式
{
string str = serialPort1.ReadExisting();//字符串方式读
textBox2.AppendText(str);//添加内容
}
else//如果接收模式为数值模式
{
byte data;
data = (byte)serialPort1.ReadByte();//此处需要强制类型转换，将int类型数据转换为byte
string str = Convert.ToString(data, 16).ToUpper();//转换为大写十六进制字符串
textBox2.AppendText("0x" + (str.Length == 1 ? "0" + str : str) + " ");//空位补"0"
}
}
private void button1_Click(object sender, EventArgs e)
{
try
{
serialPort1.PortName = comboBox1.Text;
serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text);//十进制数据转换
serialPort1.Open();
button1.Enabled = false;//打开串口按钮不可用
button2.Enabled = true;//关闭串口
}
catch
{
MessageBox.Show("端口错误，请检查串口", "错误");
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
serialPort1.Close();//关闭串口
button1.Enabled = true;//打开串口按钮可用
button2.Enabled = false;//关闭串口按钮不可用
}
catch (Exception err)
{
throw;
}
}
private void button3_Click(object sender, EventArgs e)
{
byte[] Data = new byte[1];//只存储一个字节
if (serialPort1.IsOpen)//判断串口是否打开，如果打开就执行下一步操作
{
if (textBox2.Text!=" ")
{
if (!radioButton1.Checked)//如果是字符模式
{
try
{
serialPort1.WriteLine(textBox2.Text);//写数据
}
catch (Exception err)
{
MessageBox.Show("窗口数据写入错误", "错误");//出错提示
serialPort1.Close();
button1.Enabled = true;//打开串口按钮可用
button2.Enabled = false;//关闭串口按钮不可用
}
}
else
{
for (int i = 0; i < (textBox2.Text.Length - textBox2.Text.Length % 2) / 2; i++)
{
Data[0] = Convert.ToByte(textBox2.Text.Substring(i * 2, 2), 16);
serialPort1.Write(Data, 0, 1);//循环发送（如果输入字符为0A0BB，则只发送0A,0B）
}
if (textBox2.Text.Length % 2 != 0)//剩下一位单独处理
{
//Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length - textBox2.Text.Length % 2, textBox2.Text.Length % 2), 16);
Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length - 1,1), 16);
serialPort1.Write(Data, 0, 1);//发送
}
}
}
}
}
//private void textBox1_TextChanged(object sender, EventArgs e)
//{
// textBox1.ScrollToCaret();//将滚动条调至最下
//}
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace chuankuo2
{
public partial class Form1 : Form
{
//定义一些常量
const byte DeviceOpen1 = 0x01;
const byte DeviceClose1 = 0x81;
const byte DeviceOpen2 = 0x02;
const byte DeviceClose2 = 0x82;
const byte DeviceOpen3 = 0x03;
const byte DeviceClose3 = 0x83;
byte[] SerialPortDataBuffer = new byte[1];
public Form1()
{
InitializeComponent();//窗口构造
}
private void button1_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)//如果串口是打开
{
try
{
serialPort1.Close();//关闭串口
}
catch
{
}
button1.Text = "打开串口";//显示打开串口
}
else//如果串口关闭
{
try
{
serialPort1.PortName = comboBox1.Text;//端口号
serialPort1.Open();//打开端口
button1.Text = "关闭串口";
}
catch
{
MessageBox.Show("串口打开失败", "错误");
}
}
}
private void Form1_Load(object sender, EventArgs e)//点击屏幕空白处
{
SearchAndAddSerialToComboBox(serialPort1, comboBox1);//调用扫描函数
}
private void SearchAndAddSerialToComboBox(SerialPort MyPort,ComboBox MyBox)//定义扫描函数
{ //将可用端口号添加到ComboBox
//string[] MyString = new string[20];//定义20个string类型的数组
string Buffer; //缓存
MyBox.Items.Clear();//清空ComboBox内容
//int count = 0;
for (int i = 1; i < 20; i++)//循环
{
try
{
Buffer = "COM" + i.ToString();
MyPort.PortName = Buffer;
MyPort.Open();
//MyString[i - 1] = Buffer;
//MyString[count] = Buffer;
MyBox.Items.Add(Buffer);
MyPort.Close();
//count++;
}
catch
{
//count--;
}
}
//MyBox.Text = MyString[0];//初始化
}
private void WriteByteToSerialPort(byte data)//单字节写入串口
{
byte[] Buffer = new byte[2] { 0x00, data };//定义数组
if (serialPort1.IsOpen)
{
try
{
serialPort1.Write(Buffer, 0, 2);//写数据
}
catch
{
MessageBox.Show("串口数据发送出错,请检查", "错误");
}
}
}
private void button3_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceOpen1);
}
private void button4_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceClose1);
}
private void button5_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceOpen2);
}
private void button6_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceClose2);
}
private void button7_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceOpen3);
}
private void button8_Click(object sender, EventArgs e)
{
WriteByteToSerialPort(DeviceClose3);
}
private void button2_Click(object sender, EventArgs e)
{
SearchAndAddSerialToComboBox(serialPort1, comboBox1);//扫描功能的实现
}
}
}
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