form1.vb

Corrado Cavalli为VB.NET写的串口通讯类。通过调用API的方法与串口通讯。我的有关串口通讯的程序都是用的这个类。

Public Class Form1
	Inherits System.Windows.Forms.Form



	'// Private members
	Private miComPort As Integer

	Friend WithEvents btnOpenCom As System.Windows.Forms.Button
	Friend WithEvents btnCloseCom As System.Windows.Forms.Button
	Friend WithEvents btnTx As System.Windows.Forms.Button
	Friend WithEvents Label2 As System.Windows.Forms.Label
	Friend WithEvents Label3 As System.Windows.Forms.Label
	Friend WithEvents txtTx As System.Windows.Forms.TextBox
	Friend WithEvents txtRx As System.Windows.Forms.TextBox
	Friend WithEvents btnRx As System.Windows.Forms.Button
	Friend WithEvents Label5 As System.Windows.Forms.Label
	Friend WithEvents txtBytes2Read As System.Windows.Forms.TextBox
	Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
	Friend WithEvents optCom2 As System.Windows.Forms.RadioButton
	Friend WithEvents optCom1 As System.Windows.Forms.RadioButton
	Friend WithEvents txtTimeout As System.Windows.Forms.TextBox
	Friend WithEvents Label4 As System.Windows.Forms.Label
	Friend WithEvents txtBaudrate As System.Windows.Forms.TextBox
	Friend WithEvents Label1 As System.Windows.Forms.Label
	Friend WithEvents ToolTip1 As System.Windows.Forms.ToolTip
	Friend WithEvents chkAutorx As System.Windows.Forms.CheckBox
	Friend WithEvents chkRTS As System.Windows.Forms.CheckBox
	Friend WithEvents chkDTR As System.Windows.Forms.CheckBox
	Friend WithEvents btnExit As System.Windows.Forms.Button
	Private WithEvents moRS232 As Rs232
	Private mlTicks As Long

#Region " Windows Form Designer generated code "

	Public Sub New()
		MyBase.New()

		'This call is required by the Windows Form Designer.
		InitializeComponent()

		'Add any initialization after the InitializeComponent() call

	End Sub

	'Form overrides dispose to clean up the component list.
	Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
		If disposing Then
			If Not (components Is Nothing) Then
				components.Dispose()
			End If
		End If
		MyBase.Dispose(disposing)
	End Sub
	Private components As System.ComponentModel.IContainer


	'Required by the Windows Form Designer

	'NOTE: The following procedure is required by the Windows Form Designer
	'It can be modified using the Windows Form Designer.  
	'Do not modify it using the code editor.
	Friend WithEvents linkAuthor As System.Windows.Forms.LinkLabel
	Friend WithEvents lbHex As System.Windows.Forms.ListBox
	Friend WithEvents Label6 As System.Windows.Forms.Label
	Friend WithEvents cboStatusLine As System.Windows.Forms.ComboBox
	Friend WithEvents btnCheck As System.Windows.Forms.Button
	Friend WithEvents Label7 As System.Windows.Forms.Label
	Friend WithEvents chkOl As System.Windows.Forms.CheckBox
	Friend WithEvents btnAsyncTx As System.Windows.Forms.Button
	Friend WithEvents btnAsync As System.Windows.Forms.Button
	Friend WithEvents lbAsync As System.Windows.Forms.ListBox
	Friend WithEvents lblAsync As System.Windows.Forms.Label
	<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Me.ToolTip1 = New System.Windows.Forms.ToolTip(Me.components)
        Me.chkRTS = New System.Windows.Forms.CheckBox
        Me.btnTx = New System.Windows.Forms.Button
        Me.txtTimeout = New System.Windows.Forms.TextBox
        Me.txtTx = New System.Windows.Forms.TextBox
        Me.chkAutorx = New System.Windows.Forms.CheckBox
        Me.btnOpenCom = New System.Windows.Forms.Button
        Me.txtBaudrate = New System.Windows.Forms.TextBox
        Me.btnRx = New System.Windows.Forms.Button
        Me.txtBytes2Read = New System.Windows.Forms.TextBox
        Me.chkDTR = New System.Windows.Forms.CheckBox
        Me.chkOl = New System.Windows.Forms.CheckBox
        Me.btnAsyncTx = New System.Windows.Forms.Button
        Me.btnAsync = New System.Windows.Forms.Button
        Me.lbAsync = New System.Windows.Forms.ListBox
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.txtRx = New System.Windows.Forms.TextBox
        Me.optCom1 = New System.Windows.Forms.RadioButton
        Me.btnCloseCom = New System.Windows.Forms.Button
        Me.optCom2 = New System.Windows.Forms.RadioButton
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.btnExit = New System.Windows.Forms.Button
        Me.linkAuthor = New System.Windows.Forms.LinkLabel
        Me.lbHex = New System.Windows.Forms.ListBox
        Me.Label6 = New System.Windows.Forms.Label
        Me.cboStatusLine = New System.Windows.Forms.ComboBox
        Me.btnCheck = New System.Windows.Forms.Button
        Me.Label7 = New System.Windows.Forms.Label
        Me.lblAsync = New System.Windows.Forms.Label
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'chkRTS
        '
        Me.chkRTS.Checked = True
        Me.chkRTS.CheckState = System.Windows.Forms.CheckState.Checked
        Me.chkRTS.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.chkRTS.Location = New System.Drawing.Point(212, 90)
        Me.chkRTS.Name = "chkRTS"
        Me.chkRTS.Size = New System.Drawing.Size(63, 19)
        Me.chkRTS.TabIndex = 3
        Me.chkRTS.Text = "RTS"
        Me.ToolTip1.SetToolTip(Me.chkRTS, "Set state of RTS Line")
        '
        'btnTx
        '
        Me.btnTx.Enabled = False
        Me.btnTx.Location = New System.Drawing.Point(216, 126)
        Me.btnTx.Name = "btnTx"
        Me.btnTx.Size = New System.Drawing.Size(60, 17)
        Me.btnTx.TabIndex = 7
        Me.btnTx.Text = "Tx"
        Me.ToolTip1.SetToolTip(Me.btnTx, "Sends data to COM Port")
        '
        'txtTimeout
        '
        Me.txtTimeout.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.txtTimeout.Location = New System.Drawing.Point(69, 32)
        Me.txtTimeout.Name = "txtTimeout"
        Me.txtTimeout.Size = New System.Drawing.Size(65, 21)
        Me.txtTimeout.TabIndex = 3
        Me.txtTimeout.Text = "500"
        Me.ToolTip1.SetToolTip(Me.txtTimeout, "COM Port timeout in ms")
        '
        'txtTx
        '
        Me.txtTx.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.txtTx.Location = New System.Drawing.Point(7, 134)
        Me.txtTx.Name = "txtTx"
        Me.txtTx.Size = New System.Drawing.Size(200, 21)
        Me.txtTx.TabIndex = 6
        Me.txtTx.Text = "ATDT00121233854111"
        Me.ToolTip1.SetToolTip(Me.txtTx, "Type data you want to send")
        '
        'chkAutorx
        '
        Me.chkAutorx.Checked = True
        Me.chkAutorx.CheckState = System.Windows.Forms.CheckState.Checked
        Me.chkAutorx.Location = New System.Drawing.Point(8, 342)
        Me.chkAutorx.Name = "chkAutorx"
        Me.chkAutorx.Size = New System.Drawing.Size(185, 15)
        Me.chkAutorx.TabIndex = 13
        Me.chkAutorx.Text = "Automatically receive bytes"
        Me.ToolTip1.SetToolTip(Me.chkAutorx, "After a Tx tries to Rx bytes")
        '
        'btnOpenCom
        '
        Me.btnOpenCom.Location = New System.Drawing.Point(210, 19)
        Me.btnOpenCom.Name = "btnOpenCom"
        Me.btnOpenCom.Size = New System.Drawing.Size(95, 27)
        Me.btnOpenCom.TabIndex = 1
        Me.btnOpenCom.Text = "Open COM Port"
        Me.ToolTip1.SetToolTip(Me.btnOpenCom, "Initializes and Open COM port")
        '
        'txtBaudrate
        '
        Me.txtBaudrate.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.txtBaudrate.Location = New System.Drawing.Point(69, 68)
        Me.txtBaudrate.Name = "txtBaudrate"
        Me.txtBaudrate.Size = New System.Drawing.Size(65, 21)
        Me.txtBaudrate.TabIndex = 5
        Me.txtBaudrate.Text = "19200"
        Me.ToolTip1.SetToolTip(Me.txtBaudrate, "COM Port Baudrate")
        '
        'btnRx
        '
        Me.btnRx.Enabled = False
        Me.btnRx.Location = New System.Drawing.Point(7, 293)
        Me.btnRx.Name = "btnRx"
        Me.btnRx.Size = New System.Drawing.Size(58, 19)
        Me.btnRx.TabIndex = 10
        Me.btnRx.Text = "Rx"
        Me.ToolTip1.SetToolTip(Me.btnRx, "Reads COM Buffer")
        '
        'txtBytes2Read
        '
        Me.txtBytes2Read.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.txtBytes2Read.Location = New System.Drawing.Point(245, 305)
        Me.txtBytes2Read.Name = "txtBytes2Read"
        Me.txtBytes2Read.Size = New System.Drawing.Size(65, 21)
        Me.txtBytes2Read.TabIndex = 12
        Me.txtBytes2Read.Text = "34"
        Me.ToolTip1.SetToolTip(Me.txtBytes2Read, "Bytes to read from COM buffer")
        '
        'chkDTR
        '
        Me.chkDTR.Checked = True
        Me.chkDTR.CheckState = System.Windows.Forms.CheckState.Checked
        Me.chkDTR.FlatStyle = System.Windows.Forms.FlatStyle.System
        Me.chkDTR.Location = New System.Drawing.Point(260, 90)
        Me.chkDTR.Name = "chkDTR"
        Me.chkDTR.Size = New System.Drawing.Size(63, 19)
        Me.chkDTR.TabIndex = 4
        Me.chkDTR.Text = "DTR"
        Me.ToolTip1.SetToolTip(Me.chkDTR, "Set state of DTR Line")
        '
        'chkOl
        '
        Me.chkOl.Location = New System.Drawing.Point(168, 343)
        Me.chkOl.Name = "chkOl"
        Me.chkOl.Size = New System.Drawing.Size(129, 13)
        Me.chkOl.TabIndex = 21
        Me.chkOl.Text = "Overlapped Mode"
        Me.ToolTip1.SetToolTip(Me.chkOl, "Open port in overlapped mode")
        '
        'btnAsyncTx
        '
        Me.btnAsyncTx.Enabled = False
        Me.btnAsyncTx.Location = New System.Drawing.Point(217, 148)
        Me.btnAsyncTx.Name = "btnAsyncTx"
        Me.btnAsyncTx.Size = New System.Drawing.Size(58, 17)
        Me.btnAsyncTx.TabIndex = 23
        Me.btnAsyncTx.Text = "Async Tx"
        Me.ToolTip1.SetToolTip(Me.btnAsyncTx, "Sends data to COM Port (Async Mode)")
        '
        'btnAsync
        '
        Me.btnAsync.Enabled = False
        Me.btnAsync.Location = New System.Drawing.Point(7, 315)
        Me.btnAsync.Name = "btnAsync"
        Me.btnAsync.Size = New System.Drawing.Size(58, 19)
        Me.btnAsync.TabIndex = 24
        Me.btnAsync.Text = "Async Rx"
        Me.ToolTip1.SetToolTip(Me.btnAsync, "Reads COM Buffer (Async method)")
        '
        'lbAsync
        '
        Me.lbAsync.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.lbAsync.Location = New System.Drawing.Point(7, 376)
        Me.lbAsync.Name = "lbAsync"
        Me.lbAsync.Size = New System.Drawing.Size(305, 54)
        Me.lbAsync.TabIndex = 25
        Me.ToolTip1.SetToolTip(Me.lbAsync, "Async method sequence")
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(240, 290)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(82, 14)
        Me.Label5.TabIndex = 11
        Me.Label5.Text = "Bytes to read"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(69, 18)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(82, 14)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "Timeout (ms)"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(69, 54)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(82, 14)
        Me.Label4.TabIndex = 4
        Me.Label4.Text = "BaudRate"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(7, 164)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(82, 14)
        Me.Label3.TabIndex = 8
        Me.Label3.Text = "Received Data"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(7, 120)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(82, 14)
        Me.Label2.TabIndex = 5
        Me.Label2.Text = "Data to Tx"
        '
        'txtRx
        '
        Me.txtRx.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.txtRx.Location = New System.Drawing.Point(7, 178)
        Me.txtRx.Multiline = True
        Me.txtRx.Name = "txtRx"
        Me.txtRx.Size = New System.Drawing.Size(305, 44)
        Me.txtRx.TabIndex = 9
        Me.txtRx.Text = ""
        '
        'optCom1
        '
        Me.optCom1.Checked = True
        Me.optCom1.Location = New System.Drawing.Point(8, 32)
        Me.optCom1.Name = "optCom1"
        Me.optCom1.Size = New System.Drawing.Size(64, 26)
        Me.optCom1.TabIndex = 0
        Me.optCom1.TabStop = True
        Me.optCom1.Text = "COM &1"
        '
        'btnCloseCom
        '
        Me.btnCloseCom.Enabled = False
        Me.btnCloseCom.Location = New System.Drawing.Point(211, 51)
        Me.btnCloseCom.Name = "btnCloseCom"
        Me.btnCloseCom.Size = New System.Drawing.Size(95, 27)
        Me.btnCloseCom.TabIndex = 2
        Me.btnCloseCom.Text = "Close COM Port"
        '
        'optCom2
        '
        Me.optCom2.Location = New System.Drawing.Point(8, 56)
        Me.optCom2.Name = "optCom2"
        Me.optCom2.Size = New System.Drawing.Size(66, 26)
        Me.optCom2.TabIndex = 1
        Me.optCom2.Text = "COM &2"
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.txtTimeout)