C# WPF编程-串口通信
- 串口通信
- 1. NuGet安装System.IO.Ports
- 2. 界面布局XAML
- 3. C#代码
- 4. 运行效果
- 源码下载
串口通信
1. NuGet安装System.IO.Ports
2. 界面布局XAML
<Window x:Class="BlocksTools.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:BlocksTools"
mc:Ignorable="d"
Title="串口工具" Height="450" Width="800">
<Grid>
<TabControl>
<TabItem>
<TabItem.Header>
<StackPanel>
<Label>串口设置</Label>
</StackPanel>
</TabItem.Header>
<StackPanel Orientation="Horizontal">
<GroupBox Header="串口" Width="200">
<StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">端口号</Label>
<ComboBox x:Name="comboBoxCOM" Margin="3" Height="20" Width="130" DragDrop.Drop="comboBoxCOM_Drop"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">波特率</Label>
<ComboBox x:Name="comboBoxBaudRate" Margin="3" Height="20" Width="130" SelectedIndex="0" >
<ComboBoxItem>9600</ComboBoxItem>
<ComboBoxItem>19200</ComboBoxItem>
<ComboBoxItem>38400</ComboBoxItem>
<ComboBoxItem>115200</ComboBoxItem>
<ComboBoxItem>1000000</ComboBoxItem>
</ComboBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">数据位</Label>
<ComboBox x:Name="comboBoxDataBit" Margin="3" Height="20" Width="130" SelectedIndex="3">
<ComboBoxItem>5</ComboBoxItem>
<ComboBoxItem>6</ComboBoxItem>
<ComboBoxItem>7</ComboBoxItem>
<ComboBoxItem>8</ComboBoxItem>
</ComboBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">停止位</Label>
<ComboBox x:Name="comboBoxStopBit" Margin="3" Height="20" Width="130" SelectedIndex="0">
<ComboBoxItem>1位</ComboBoxItem>
<ComboBoxItem>1.5位</ComboBoxItem>
<ComboBoxItem>2位</ComboBoxItem>
</ComboBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">校验位</Label>
<ComboBox x:Name="comboBoxSdd" Margin="3" Height="20" Width="130" SelectedIndex="0">
<ComboBoxItem>无校验</ComboBoxItem>
<ComboBoxItem>奇校验</ComboBoxItem>
<ComboBoxItem>偶校验</ComboBoxItem>
<ComboBoxItem>1 校验</ComboBoxItem>
<ComboBoxItem>0 校验</ComboBoxItem>
</ComboBox>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Label Margin="3" Height="25" Width="50">流控位</Label>
<ComboBox x:Name="comboBoxlik" Margin="3" Height="20" Width="130" SelectedIndex="0" >
<ComboBoxItem>无流控</ComboBoxItem>
<ComboBoxItem>RTS/CTS</ComboBoxItem>
<ComboBoxItem>XON/XOFF</ComboBoxItem>
</ComboBox>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
<Button x:Name="btnOpenCloseCom" Margin="3" Width="80" Height="25" Click="btnOpenCloseCom_Click">打开串口</Button>
<Button x:Name="btnClearRecv" Margin="3" Width="80" Height="25" Click="btnClearRecv_Click">清空接收</Button>
</StackPanel>
</StackPanel>
</GroupBox>
<GroupBox Header="接收数据" MinWidth="590" MaxWidth="1000" Width="515">
<ScrollViewer>
<ScrollViewer.Content>
<TextBlock x:Name="textBlockRecv" MinWidth="300"></TextBlock>
</ScrollViewer.Content>
</ScrollViewer>
</GroupBox>
</StackPanel>
</TabItem>
<TabItem>
<TabItem.Header>
<StackPanel>
<Label>数据显示</Label>
</StackPanel>
</TabItem.Header>
</TabItem>
</TabControl>
</Grid>
</Window>
3. C#代码
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace BlocksTools
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
SerialPort mSerialPort = new SerialPort();
private StringBuilder lineBuilder = new StringBuilder(); // 用于存放串口接收数据
public MainWindow()
{
InitializeComponent();
// 获取所有可用串口端口，并添加到comboBoxCOM
string[] ports = System.IO.Ports.SerialPort.GetPortNames();
comboBoxCOM.ItemsSource = ports;
comboBoxCOM.SelectedIndex = 0; // 默认选择索引
}
/// <summary>
/// 串口数据接收函数
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
System.Threading.Thread.Sleep(1); // 等待1S保证串口发送的一帧数据全部接收完成
// 读取数据
byte[] data = new byte[mSerialPort.BytesToRead];
mSerialPort.Read(data, 0, data.Length);
string str = Encoding.UTF8.GetString(data); // 字符串转码UTF-8格式
lineBuilder.Append(str);
this.Dispatcher.Invoke(new Action(() =>
{
string str2 = lineBuilder.ToString();
textBlockRecv.Text = str2; // 显示串口数据内容
// 解析串口数据:
// $$ADC:[228,246,247,253,828,348,262,260,316,275,297,320,291,343,837,]ADC$$
int index_start = str2.IndexOf("$$ADC:[", StringComparison.Ordinal);
int index_end = str2.IndexOf("]ADC$$", StringComparison.Ordinal);
if ((index_start >= 0) && (index_end >= 0))
{
string str3 = str2.Substring(index_start + "$$ADC:[".Length, index_end - index_start); // 截取"$$ADC:["之后的数据
string[] array = str3.Split(new char[] { ',' }); // 以","分割数据，并存储到数组
double adc1 = Convert.ToDouble(array[0]); // 字符串转数值
}
}));
}
/// <summary>
/// 打开关闭串口
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnOpenCloseCom_Click(object sender, RoutedEventArgs e)
{
if (mSerialPort.IsOpen)
{
mSerialPort.Close();
btnOpenCloseCom.Content = "打开串口";
Console.WriteLine("关闭串口成功");
Debug.WriteLine("关闭串口成功");
comboBoxBaudRate.IsEnabled = true;
comboBoxCOM.IsEnabled = true;
comboBoxDataBit.IsEnabled = true;
comboBoxStopBit.IsEnabled = true;
comboBoxSdd.IsEnabled = true;
comboBoxlik.IsEnabled = true;
}
else
{
mSerialPort.PortName = comboBoxCOM.SelectedItem.ToString();
mSerialPort.BaudRate = 1000000; // 波特率
mSerialPort.DataBits = 8; // 数据位
mSerialPort.StopBits = StopBits.One; // 停止位
mSerialPort.Parity = Parity.None; // 校验位
mSerialPort.Handshake = Handshake.None;
//mSerialPort.ReadTimeout = 1500; // 读超时
//mSerialPort.Encoding = Encoding.UTF8; // 编码方式
//mSerialPort.RtsEnable = true;
mSerialPort.DataReceived += SerialPort_DataReceived;
switch (comboBoxBaudRate.SelectedIndex)
{
case 0:
Console.WriteLine("baudrate: 9600");
mSerialPort.BaudRate = 9600;
break;
case 1:
mSerialPort.BaudRate = 19200;
Console.WriteLine("baudrate: 19200");
break;
case 2:
mSerialPort.BaudRate = 38400;
Console.WriteLine("baudrate: 38400");
break;
case 3:
Console.WriteLine("baudrate: 115200");
mSerialPort.BaudRate = 115200;
break;
case 4:
Console.WriteLine("baudrate: 1000000");
mSerialPort.BaudRate = 1000000;
break;
default:
Console.WriteLine("default baudrate!");
mSerialPort.BaudRate = 9600;
break;
}
// mSerialPort.Write("Hello world"); // 写字符串口
// mSerialPort.Write(new byte[] { 0xA0, 0xB0, 0xC0}, 0, 3); // 写入3个字节数据
//Debug.WriteLine("Hello world");
//MessageBox.Show("端口名：" + mSerialPort.PortName);
try
{
mSerialPort.Open();
btnOpenCloseCom.Content = "关闭串口";
Console.WriteLine("打开串口成功");
Debug.WriteLine("打开串口成功");
comboBoxBaudRate.IsEnabled = false;
comboBoxCOM.IsEnabled = false;
comboBoxDataBit.IsEnabled = false;
comboBoxStopBit.IsEnabled = false;
comboBoxSdd.IsEnabled = false;
comboBoxlik.IsEnabled = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
/// <summary>
/// 清空串口接收数据
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnClearRecv_Click(object sender, RoutedEventArgs e)
{
lineBuilder.Clear();
textBlockRecv.Text = lineBuilder.ToString();
}
/// <summary>
/// 串口端口选择
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBoxCOM_Drop(object sender, DragEventArgs e)
{
string[] ports = System.IO.Ports.SerialPort.GetPortNames();
comboBoxCOM.ItemsSource = ports;
comboBoxCOM.SelectedIndex = 0;
}
}
}
4. 运行效果
源码下载
源码下载
