实例介绍
【实例简介】串口调试助手
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.IO.Ports;
using System.Text;
using System.Windows.Forms;
namespace SerialCommunications
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Init();
}
private SerialPort ComDevice = new SerialPort();
Timer timeSend;
private void Form1_Load(object sender, EventArgs e)
{
System.Drawing.Drawing2D.GraphicsPath path = new System.Drawing.Drawing2D.GraphicsPath();
path.AddEllipse(this.pictureBox1.ClientRectangle);
Region reg = new Region(path);
this.pictureBox1.Region = reg;
this.pictureBox1.BackColor = Color.Red;
ZDsend.Enabled = false;
}
public void Init()
{
comboBox_Port.Items.AddRange(SerialPort.GetPortNames());
if (comboBox_Port.Items.Count > 0)
{
comboBox_Port.SelectedIndex = 0;
}
else
{
MessageBox.Show("未检测到串口");
}
comboBox_BaudRate.SelectedIndex = 5;
comboBox_CheckBits.SelectedIndex = 0;
comboBox_DataBits.SelectedIndex = 3;
comboBox_StopBits.SelectedIndex = 0;
}
void ComDevice_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
byte[] ReDatas = new byte[ComDevice.BytesToRead];
ComDevice.Read(ReDatas, 0, ReDatas.Length);
AddData(ReDatas);
}
void AddData(byte[] ReDatas)
{
if (cbResvTo16.Checked==true)
{
foreach (byte b in ReDatas)
{
AddContent(b.ToString("X2"));
}
}
else
{
AddContent(Encoding.Default.GetString(ReDatas));
}
}
void AddContent(string str)
{
BeginInvoke(new MethodInvoker(delegate
{
textBox_Receive.AppendText(str);
}));
}
private void openOrStop_Click(object sender, EventArgs e)
{
if (openOrStop.Text == "开启端口")
{
if (comboBox_Port.Items.Count <= 0)
{
MessageBox.Show("未发现可用串口");
return;
}
if (ComDevice.IsOpen == false)
{
ComDevice.PortName = comboBox_Port.SelectedItem.ToString();
ComDevice.BaudRate = Convert.ToInt32(comboBox_BaudRate.SelectedItem.ToString());
ComDevice.Parity = (Parity)Convert.ToInt32(comboBox_CheckBits.SelectedIndex.ToString());
ComDevice.DataBits = Convert.ToInt32(comboBox_DataBits.SelectedItem.ToString());
ComDevice.StopBits = (StopBits)Convert.ToInt32(comboBox_StopBits.SelectedItem.ToString());
try
{
ComDevice.ReceivedBytesThreshold = 1;
this.ComDevice.ReadBufferSize = 0x100000;
this.ComDevice.WriteBufferSize = 0x5000;
ComDevice.DataReceived = ComDevice_DataReceived;
//开启串口
ComDevice.Open();
button_Send.Enabled = true;
ZDsend.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "未能成功开启串口", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
openOrStop.Text = "关闭";
pictureBox1.BackColor = Color.Green;
}
else
{
try
{
//关闭串口
ComDevice.Close();
button_Send.Enabled = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "串口关闭错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
openOrStop.Text = "开启端口";
pictureBox1.BackColor = Color.Red;
}
comboBox_Port.Enabled = !ComDevice.IsOpen;
comboBox_BaudRate.Enabled = !ComDevice.IsOpen;
comboBox_DataBits.Enabled = !ComDevice.IsOpen;
comboBox_StopBits.Enabled = !ComDevice.IsOpen;
comboBox_CheckBits.Enabled = !ComDevice.IsOpen;
}
else if (openOrStop.Text == "关闭")
{
if (ComDevice.IsOpen == true)
{
ComDevice.Close();
comboBox_Port.Enabled = !ComDevice.IsOpen;
comboBox_BaudRate.Enabled = !ComDevice.IsOpen;
comboBox_DataBits.Enabled = !ComDevice.IsOpen;
comboBox_StopBits.Enabled = !ComDevice.IsOpen;
comboBox_CheckBits.Enabled = !ComDevice.IsOpen;
pictureBox1.BackColor = Color.Red;
openOrStop.Text = "开启端口";
button_Send.Enabled = false;
ZDsend.Checked = false;
ZDsend.Enabled = false;
}
}
}
private void ZDsend_CheckedChanged(object sender, EventArgs e)
{
if (ZDsend.Checked == true)
{
try
{
if (string.IsNullOrEmpty(sendTextBox.Text))
{
MessageBox.Show("请输入发送内容");
ZDsend.Checked = false;
return;
}
if (ZDsend.Checked == true)
{
timeSend = new Timer();
timeSend.Interval = Convert.ToInt32(numTime.Value);
timeSend.Tick = timeSend_Tick;
timeSend.Start();
}
}
catch (Exception)
{
throw;
}
}
}
byte[] strToHexByte(string sendData)
{
string hexString = sendData.Replace(" ", "");
if ((hexString.Length % 2) != 0)
hexString = " ";
byte[] returnBytes = new byte[hexString.Length / 2];
for (int i = 0; i < returnBytes.Length; i )
returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2).Replace(" ", ""), 16);
return returnBytes;
}
void send()
{
if (ComDevice.IsOpen)
{
if (cbResvTo16Send.Checked == true)
{
string sendData = sendTextBox.Text;
ComDevice.Write(strToHexByte(sendData), 0, strToHexByte(sendData).Length);
}
else
{
string sendData = sendTextBox.Text;
ComDevice.Write(Encoding.Default.GetBytes(sendData), 0, Encoding.Default.GetBytes(sendData).Length);
}
// MessageBox.Show("打开");
}
}
void timeSend_Tick(object sender, EventArgs e)
{
try
{
timeSend.Stop();
send();
}
catch (Exception)
{
throw;
}
finally
{
timeSend.Start();
}
}
private void button2_Click(object sender, EventArgs e)
{
textBox_Receive.Text = string.Empty;
}
private void button3_Click(object sender, EventArgs e)
{
sendTextBox.Text = string.Empty;
}
private void button_Send_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(sendTextBox.Text))
{
MessageBox.Show("请输入发送内容");
return;
}
send();
}
}
}
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