类别：程序开发
日期：2023-01-03 浏览：1961 评论：0
纯小白教程，串口通信，实例自定义类，调用方法即可使用，可自己加定时器实现自动发送。
界面.xaml
<Grid> <Button x:Name="BtConnect" Content="建立连接" HorizontalAlignment="Left" Margin="33,24,0,0" VerticalAlignment="Top" Width="75" Height="50" Click="BtConnect_Click"/> <Button x:Name="BtBreak" Content="断开连接" HorizontalAlignment="Left" Margin="33,90,0,0" VerticalAlignment="Top" Width="75" Height="50" Click="BtBreak_Click"/> <TextBox x:Name="TxSend" HorizontalAlignment="Left" Height="90" Margin="173,250,0,0" Text="TextBox" VerticalAlignment="Top" Width="421"/> <TextBox x:Name="TxRece" HorizontalAlignment="Left" Margin="173,90,0,0" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top" Height="129" Width="421" ScrollViewer.CanContentScroll="True" VerticalScrollBarVisibility="Visible"/> <Button x:Name="BtTxSend" Content="发送消息" HorizontalAlignment="Left" Margin="634,250,0,0" VerticalAlignment="Top" Width="75" Height="90" Click="BtTxSend_Click"/> <Button x:Name="BtClearTxRece" Content="清空接收" HorizontalAlignment="Left" Margin="634,129,0,0" VerticalAlignment="Top" Width="75" Height="90" Click="BtClearTxRece_Click"/> <StackPanel Orientation="Horizontal"> <TextBlock Text=" 本地连接号：" VerticalAlignment="Bottom" Height="30" HorizontalAlignment="Left" /> <TextBlock x:Name="T_Data" Text="1" VerticalAlignment="Bottom" Height="30" HorizontalAlignment="Left" /> </StackPanel> <CheckBox x:Name="CB_SendType" Content="HEX发送" Margin="173,224,535.6,170" FlowDirection="RightToLeft"/> <CheckBox x:Name="CB_ReceType" Content="HEX接收" Margin="173,63,513.6,330" FlowDirection="RightToLeft"/> </Grid>
后端.xmal.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
SerialPortInit();
}
private CsMySerialPort mySerialPort = new CsMySerialPort();
private CsMySerialPort.SerialPortParm SpParm;
private void SerialPortInit()
{
SpParm.strPortName = "COM1";
SpParm.strBaudRate = "9600";
SpParm.strDataBits = "8";
SpParm.strStopBits = "1";
SpParm.strParity = "1";
mySerialPort.ReceEvent += ReceDataClick;
mySerialPort.SendEvent += IsHEXClick;
}
private bool ReceSerialPort(string strIn)
{
var strCompare = strIn.Split('-');
if (strCompare.Count() > 1)
{
if (strCompare[0] == "#Sp000")
{
T_Data.Text = SpParm.strPortName + "已连接";
return false;
}
if (strCompare[0] == "#Sp404")
{
T_Data.Text = SpParm.strPortName + "已断开";
return false;
}
}
return true;
}
private bool IsHEXClick(string strIn)
{
if (strIn == "#HEXSend")
return (bool)CB_SendType.IsChecked;
return true;
}
private bool ReceDataClick(string strIn)
{
if (strIn == "#HEXRece")
return (bool)CB_ReceType.IsChecked;
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
if (!ReceSerialPort(strIn))
return;
if (false)
TxRece.Text += strIn;
else
TxRece.Text += strIn + "\r\n";
});
return true;
}
private void BtClearTxRece_Click(object sender, RoutedEventArgs e) => TxRece.Text = string.Empty;
private void BtTxSend_Click(object sender, RoutedEventArgs e) => mySerialPort.ComSend(TxSend.Text);//HEX 输入格式要求 末尾不要输入空格和回车 ASCII 随意
private void BtConnect_Click(object sender, RoutedEventArgs e) => mySerialPort.OpenSerialPort(SpParm);
private void BtBreak_Click(object sender, RoutedEventArgs e) => mySerialPort.CloseSerialPort();
}基于SerialPort类自定义的串口类
public class CsMySerialPort
{
/// <summary>
/// 作者:WangJunLiang || Wechat:Joronwongx
/// </summary>
private SerialPort SPserialPort = null;
//byte字节数组转string
private string ConverToString(byte[] data)
{
StringBuilder stb = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
if ((int)data[i] > 15)
{
stb.Append(Convert.ToString(data[i], 16).ToUpper()); //添加字符串
}
else //如果是小于0F需要加个零
{
stb.Append("0" + Convert.ToString(data[i], 16).ToUpper());
}
if (i != data.Length - 1)
stb.Append(" ");
}
return stb.ToString();
}
//string转byte字节数组
private byte[] StringToConver(string str)
{
String[] SendArr = str.Split(' ');//以空格分开
byte[] decBytes = new byte[SendArr.Length];
for (int i = 0; i < SendArr.Length; i++)
decBytes[i] = Convert.ToByte(SendArr[i], 16);
return decBytes;
}
//初始化
public struct SerialPortParm
{
public string strPortName;
public string strBaudRate;
public string strDataBits;
public string strStopBits;
public string strParity;
public StopBits GetStopBits()
{
StopBits stopBits = StopBits.One;
switch (strStopBits)
{
case "1": stopBits = StopBits.One; break;
case "2": stopBits = StopBits.Two; break;
case "1.5": stopBits = StopBits.OnePointFive; break;
default: break;
}
return stopBits;
}
public Parity GetParity()
{
Parity parity = Parity.None;
switch (strParity)
{
case "0": parity = Parity.None; break;
case "1": parity = Parity.Odd; break;
case "2": parity = Parity.Even; break;
default: break;
}
return parity;
}
}
public delegate bool ReceClientData(string strRece);
public event ReceClientData ReceEvent;
public event ReceClientData SendEvent;
//内容监听
private void ReceSerialPortDataClick(object sender, SerialDataReceivedEventArgs e)
{
try
{
System.Windows.Application.Current.Dispatcher.Invoke((Action)delegate ()
{
if (ReceEvent("#HEXRece"))
{
int nCnt = SPserialPort.BytesToRead;
byte[] Readbuffer = new byte[nCnt];
SPserialPort.Read(Readbuffer, 0, nCnt);
ReceEvent(ConverToString(Readbuffer));
}
else
{
string strReceData = SPserialPort.ReadExisting();
ReceEvent(strReceData);
}
});
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
ReceEvent(string.Format("[Error]-{0}", ex.Message));
}
}
//打开实现
public bool OpenSerialPort(SerialPortParm parm)
{
try
{
if (SPserialPort != null)
return false;
SPserialPort = new SerialPort
{
PortName = parm.strPortName,
BaudRate = int.Parse(parm.strBaudRate),
DataBits = int.Parse(parm.strDataBits),
StopBits = parm.GetStopBits(),
Parity = parm.GetParity(),
WriteBufferSize = 1048576,
ReadBufferSize = 2097152,
Encoding = System.Text.Encoding.GetEncoding("UTF-8"),
Handshake = Handshake.None,
RtsEnable = true
};
SPserialPort.DataReceived += new SerialDataReceivedEventHandler(ReceSerialPortDataClick);//接收响应函数
SPserialPort.Open();
ReceEvent(string.Format("#Sp000-{0}", parm.strPortName));
return true;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return false;
}
}
//关闭实现
public bool CloseSerialPort()
{
try
{
if (SPserialPort != null && SPserialPort.IsOpen)
{
SPserialPort.Close();
SPserialPort = null;
ReceEvent("#Sp404-");
return true;
}
return false;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return false;
}
}
//发送实现
public bool ComSend(string strIn)
{
try
{
if (SPserialPort != null && SPserialPort.IsOpen)
{
if (SendEvent("#HEXSend"))
{
byte[] decBytes = StringToConver(strIn);
SPserialPort.Write(decBytes, 0, decBytes.Length);
}
else
SPserialPort.Write(strIn.ToCharArray(), 0, strIn.Length); /* ASCII字符串发送 */
return true;
}
return false;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return false;
}
}
}
本文标题：C# WPF 基于SerialPort类实现串口通信，打开、关闭、接收、发送，支持HEX数据和ASCII数据收发。
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