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| '(c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
' <a href="http://www.systec-electronic.de" target="_blank">www.systec-electronic.de</a>
'Project: Demoapplet to test .NET Interface for USB-CANmodul GW-00x
'Description: Demoapplet
'-------------------------------------------------------------------------
' $RCSfile:$
' $Author:$
' $Revision:$ $Date:$
' $State:$
' Build Environment:
' Microsoft Visual Studio .NET (Visual Basic .NET)
'-------------------------------------------------------------------------
'Revision History:
' 2005/23/11 d.k.: new
'ToDo:
'- show bits of CanStatus from GetStatus() in separate StatusBarPanels
Imports System.Threading
Public Class MainForm
Inherits System.Windows.Forms.Form
#Region " Variable ######################################################################## "
' delegate for listview updates
Delegate Sub DelegateListViewItem(ByRef item As ListViewItem)
' the wrapper object to USBCAN32.DLL
Protected WithEvents m_USBcanInst1 As UcanDotNET.USBcanServer
Protected WithEvents m_USBcanInst2 As UcanDotNET.USBcanServer
' are the hardware and all existing CAN channels initialized
Protected m_fIsInst1Initialized As Boolean = False
Protected m_fIsInst2Initialized As Boolean = False
' does exist the 2nd CAN channel, i.e. USBCAN_CHANNEL_CH1
Protected m_f2ndChannelInst1 As Boolean = False
Protected m_f2ndChannelInst2 As Boolean = False
' device number is used to check the instances
Protected m_DeviceNrInst1 As Byte = 255
Protected m_DeviceNrInst2 As Byte = 255
' USB-CANmodul is in TxEchoMode
Protected m_fTxEchoMode As Boolean = False
' CAN message which will be sent
Protected m_canMsgStruct(0) As UcanDotNET.USBcanServer.tCanMsgStruct
' message counter (of sent messages)
Protected m_dwMsgCount As Integer = 0
' receiver thread
Protected m_RxThread As Thread
' wait handles for receiver thread (0 = do exit, 1 = received msg, 2 = status changed)
Protected m_RxWaitHandles() As WaitHandle = {New AutoResetEvent(False), New AutoResetEvent(False), New AutoResetEvent(False)}
#End Region
#Region " Vom Windows Form Designer generierter Code "
Public Sub New()
MyBase.New()
' Dieser Aufruf ist für den Windows Form-Designer erforderlich.
InitializeComponent()
' Initialisierungen nach dem Aufruf InitializeComponent() hinzufügen
m_canMsgStruct(0) = UcanDotNET.USBcanServer.tCanMsgStruct.CreateInstance(&H441)
' test with Extended Frame Format
'm_canMsgStruct(0) = USBcanLib.USBcanServer.tCanMsgStruct.CreateInstance(&H4441)
'm_canMsgStruct(0).m_bFF = USBcanLib.USBcanServer.USBCAN_MSG_FF_EXT
m_canMsgStruct(0).m_bDLC = 8
End Sub
' Die Form überschreibt den Löschvorgang der Basisklasse, um Komponenten zu bereinigen.
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
' Für Windows Form-Designer erforderlich
Private components As System.ComponentModel.IContainer
'HINWEIS: Die folgende Prozedur ist für den Windows Form-Designer erforderlich
'Sie kann mit dem Windows Form-Designer modifiziert werden.
'Verwenden Sie nicht den Code-Editor zur Bearbeitung.
Friend WithEvents MainMenu As System.Windows.Forms.MainMenu
Friend WithEvents MenuItemFile As System.Windows.Forms.MenuItem
Friend WithEvents MenuItemExit As System.Windows.Forms.MenuItem
Friend WithEvents StatusBar As System.Windows.Forms.StatusBar
Friend WithEvents CanMsgListView As System.Windows.Forms.ListView
Friend WithEvents ColumnHeaderMsg As System.Windows.Forms.ColumnHeader
Friend WithEvents ColumnHeaderLength As System.Windows.Forms.ColumnHeader
Friend WithEvents ColumnHeaderData As System.Windows.Forms.ColumnHeader
Friend WithEvents ColumnHeaderTime As System.Windows.Forms.ColumnHeader
Friend WithEvents MenuItemDevice As System.Windows.Forms.MenuItem
Friend WithEvents MenuItemConnect As System.Windows.Forms.MenuItem
Friend WithEvents MenuItemSendMsg As System.Windows.Forms.MenuItem
Friend WithEvents StatusBarPanelText As System.Windows.Forms.StatusBarPanel
Friend WithEvents StatusBarPanelCode As System.Windows.Forms.StatusBarPanel
Friend WithEvents MenuItemResetCan As System.Windows.Forms.MenuItem
Friend WithEvents MenuItemHwInfo As System.Windows.Forms.MenuItem
Friend WithEvents ColumnHeaderChannel As System.Windows.Forms.ColumnHeader
Friend WithEvents StatusBarPanelPID As System.Windows.Forms.StatusBarPanel
Friend WithEvents MenuItemShutdown As System.Windows.Forms.MenuItem
Friend WithEvents MenuItemTxEchoMode As System.Windows.Forms.MenuItem
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.components = New System.ComponentModel.Container
Me.MainMenu = New System.Windows.Forms.MainMenu(Me.components)
Me.MenuItemFile = New System.Windows.Forms.MenuItem
Me.MenuItemExit = New System.Windows.Forms.MenuItem
Me.MenuItemDevice = New System.Windows.Forms.MenuItem
Me.MenuItemTxEchoMode = New System.Windows.Forms.MenuItem
Me.MenuItemConnect = New System.Windows.Forms.MenuItem
Me.MenuItemSendMsg = New System.Windows.Forms.MenuItem
Me.MenuItemResetCan = New System.Windows.Forms.MenuItem
Me.MenuItemHwInfo = New System.Windows.Forms.MenuItem
Me.MenuItemShutdown = New System.Windows.Forms.MenuItem
Me.StatusBar = New System.Windows.Forms.StatusBar
Me.StatusBarPanelText = New System.Windows.Forms.StatusBarPanel
Me.StatusBarPanelCode = New System.Windows.Forms.StatusBarPanel
Me.StatusBarPanelPID = New System.Windows.Forms.StatusBarPanel
Me.CanMsgListView = New System.Windows.Forms.ListView
Me.ColumnHeaderChannel = New System.Windows.Forms.ColumnHeader
Me.ColumnHeaderMsg = New System.Windows.Forms.ColumnHeader
Me.ColumnHeaderLength = New System.Windows.Forms.ColumnHeader
Me.ColumnHeaderData = New System.Windows.Forms.ColumnHeader
Me.ColumnHeaderTime = New System.Windows.Forms.ColumnHeader
CType(Me.StatusBarPanelText, System.ComponentModel.ISupportInitialize).BeginInit()
CType(Me.StatusBarPanelCode, System.ComponentModel.ISupportInitialize).BeginInit()
CType(Me.StatusBarPanelPID, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'MainMenu
'
Me.MainMenu.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItemFile, Me.MenuItemDevice})
'
'MenuItemFile
'
Me.MenuItemFile.Index = 0
Me.MenuItemFile.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItemExit})
Me.MenuItemFile.Text = "&File"
'
'MenuItemExit
'
Me.MenuItemExit.Index = 0
Me.MenuItemExit.Text = "E&xit"
'
'MenuItemDevice
'
Me.MenuItemDevice.Index = 1
Me.MenuItemDevice.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItemTxEchoMode, Me.MenuItemConnect, Me.MenuItemSendMsg, Me.MenuItemResetCan, Me.MenuItemHwInfo, Me.MenuItemShutdown})
Me.MenuItemDevice.Text = "&Device"
'
'MenuItemTxEchoMode
'
Me.MenuItemTxEchoMode.Index = 0
Me.MenuItemTxEchoMode.Shortcut = System.Windows.Forms.Shortcut.CtrlT
Me.MenuItemTxEchoMode.Text = "&Tx Echo Mode"
'
'MenuItemConnect
'
Me.MenuItemConnect.Index = 1
Me.MenuItemConnect.Shortcut = System.Windows.Forms.Shortcut.CtrlC
Me.MenuItemConnect.Text = "&Connect"
'
'MenuItemSendMsg
'
Me.MenuItemSendMsg.Index = 2
Me.MenuItemSendMsg.Shortcut = System.Windows.Forms.Shortcut.CtrlS
Me.MenuItemSendMsg.Text = "&Send CAN Message"
'
'MenuItemResetCan
'
Me.MenuItemResetCan.Index = 3
Me.MenuItemResetCan.Shortcut = System.Windows.Forms.Shortcut.CtrlR
Me.MenuItemResetCan.Text = "&Reset CAN"
'
'MenuItemHwInfo
'
Me.MenuItemHwInfo.Index = 4
Me.MenuItemHwInfo.Shortcut = System.Windows.Forms.Shortcut.CtrlI
Me.MenuItemHwInfo.Text = "Hardware &Info"
'
'MenuItemShutdown
'
Me.MenuItemShutdown.Index = 5
Me.MenuItemShutdown.Shortcut = System.Windows.Forms.Shortcut.CtrlD
Me.MenuItemShutdown.Text = "&Disconnect"
'
'StatusBar
'
Me.StatusBar.Location = New System.Drawing.Point(0, 166)
Me.StatusBar.Name = "StatusBar"
Me.StatusBar.Panels.AddRange(New System.Windows.Forms.StatusBarPanel() {Me.StatusBarPanelText, Me.StatusBarPanelCode, Me.StatusBarPanelPID})
Me.StatusBar.ShowPanels = True
Me.StatusBar.Size = New System.Drawing.Size(769, 24)
Me.StatusBar.TabIndex = 0
Me.StatusBar.Text = "Not Connected"
'
'StatusBarPanelText
'
Me.StatusBarPanelText.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Spring
Me.StatusBarPanelText.Name = "StatusBarPanelText"
Me.StatusBarPanelText.Text = "NotConnected"
Me.StatusBarPanelText.Width = 458
'
'StatusBarPanelCode
'
Me.StatusBarPanelCode.Alignment = System.Windows.Forms.HorizontalAlignment.Center
Me.StatusBarPanelCode.Name = "StatusBarPanelCode"
Me.StatusBarPanelCode.Text = "00"
Me.StatusBarPanelCode.ToolTipText = "USBCAN32.DLL ErrorCode"
Me.StatusBarPanelCode.Width = 23
'
'StatusBarPanelPID
'
Me.StatusBarPanelPID.Alignment = System.Windows.Forms.HorizontalAlignment.Center
Me.StatusBarPanelPID.Name = "StatusBarPanelPID"
Me.StatusBarPanelPID.Text = "0ABC"
Me.StatusBarPanelPID.ToolTipText = "ProcessID"
Me.StatusBarPanelPID.Width = 36
'
'CanMsgListView
'
Me.CanMsgListView.AllowColumnReorder = True
Me.CanMsgListView.Columns.AddRange(New System.Windows.Forms.ColumnHeader() {Me.ColumnHeaderChannel, Me.ColumnHeaderMsg, Me.ColumnHeaderLength, Me.ColumnHeaderData, Me.ColumnHeaderTime})
Me.CanMsgListView.Dock = System.Windows.Forms.DockStyle.Fill
Me.CanMsgListView.FullRowSelect = True
Me.CanMsgListView.GridLines = True
Me.CanMsgListView.Location = New System.Drawing.Point(0, 0)
Me.CanMsgListView.Name = "CanMsgListView"
Me.CanMsgListView.Size = New System.Drawing.Size(769, 166)
Me.CanMsgListView.TabIndex = 1
Me.CanMsgListView.UseCompatibleStateImageBehavior = False
Me.CanMsgListView.View = System.Windows.Forms.View.Details
'
'ColumnHeaderChannel
'
Me.ColumnHeaderChannel.Text = "Ch"
Me.ColumnHeaderChannel.Width = 25
'
'ColumnHeaderMsg
'
Me.ColumnHeaderMsg.Text = "Msg"
Me.ColumnHeaderMsg.Width = 75
'
'ColumnHeaderLength
'
Me.ColumnHeaderLength.Text = "Length"
Me.ColumnHeaderLength.Width = 47
'
'ColumnHeaderData
'
Me.ColumnHeaderData.Text = "Data"
Me.ColumnHeaderData.Width = 146
'
'ColumnHeaderTime
'
Me.ColumnHeaderTime.Text = "Time"
Me.ColumnHeaderTime.Width = 82
'
'MainForm
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(769, 190)
Me.Controls.Add(Me.CanMsgListView)
Me.Controls.Add(Me.StatusBar)
Me.Menu = Me.MainMenu
Me.Name = "MainForm"
Me.Text = "USBcanDemoVB.Net"
CType(Me.StatusBarPanelText, System.ComponentModel.ISupportInitialize).EndInit()
CType(Me.StatusBarPanelCode, System.ComponentModel.ISupportInitialize).EndInit()
CType(Me.StatusBarPanelPID, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
#Region " MainForm events ################################################################# "
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim currentProcess As Process = Process.GetCurrentProcess()
StatusBarPanelPID.Text = currentProcess.Id.ToString()
MenuItemConnect.Enabled = True
MenuItemShutdown.Enabled = False
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MainForm_Closing(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
' tidy up all resources
DeleteAllResources()
End Sub
#End Region
#Region " MenuItem events ################################################################# "
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemConnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemConnect.Click
' connect to USB-CANmodul (any modul)
Dim bRet As Byte = 0
Dim ucanMode As UcanDotNET.USBcanServer.tUcanMode
If Me.m_fIsInst1Initialized <> True Then
' check if TxEchoMode should be enabled
If (MenuItemTxEchoMode.Checked() = True) Then
ucanMode = UcanDotNET.USBcanServer.tUcanMode.kUcanModeTxEcho
m_fTxEchoMode = True
Else
ucanMode = UcanDotNET.USBcanServer.tUcanMode.kUcanModeNormal
m_fTxEchoMode = False
End If
' init hardware
Me.m_USBcanInst1 = New UcanDotNET.USBcanServer
Me.m_USBcanInst2 = New UcanDotNET.USBcanServer ' you need to call InitHardware/InitCan methods to initialize the second instance, not done in this demo!
UcanDotNET.USBcanServer.SetDebugMode(&HC0000306, ".\MyLogFile.log")
bRet = Me.m_USBcanInst1.InitHardware(UcanDotNET.USBcanServer.USBCAN_ANY_MODULE)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
Debug.WriteLine("InitCan(): baudrate is " + UcanDotNET.USBcanServer.GetBaudrateMessage(UcanDotNET.USBcanServer.eUcanBaudrate.USBCAN_BAUD_500kBit))
' init CAN channel 0
'UcanDotNET.USBcanServer.USBCAN_BAUD_1MBit, _
bRet = Me.m_USBcanInst1.InitCan(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, _
UcanDotNET.USBcanServer.eUcanBaudrate.USBCAN_BAUD_1MBit, _
UcanDotNET.USBcanServer.eUcanBaudrateEx.USBCAN_BAUDEX_USE_BTR01, _
UcanDotNET.USBcanServer.USBCAN_AMR_ALL, _
UcanDotNET.USBcanServer.USBCAN_ACR_ALL, _
ucanMode)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
Dim HwInfo As UcanDotNET.USBcanServer.tUcanHardwareInfoEx
Dim CanInfoCh0 As UcanDotNET.USBcanServer.tUcanChannelInfo
Dim CanInfoCh1 As UcanDotNET.USBcanServer.tUcanChannelInfo
bRet = Me.m_USBcanInst1.GetHardwareInfo(HwInfo, CanInfoCh0, CanInfoCh1)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
m_DeviceNrInst1 = HwInfo.m_bDeviceNr ' is used to check the instance in event handles
End If
If ((bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) AndAlso _
(UcanDotNET.USBcanServer.CheckSupportCyclicMsg(HwInfo) = True)) Then
Dim aCyclicCanMsg(1) As UcanDotNET.USBcanServer.tCanMsgStruct
Dim aCyclicCanMsgReadBack(1) As UcanDotNET.USBcanServer.tCanMsgStruct
aCyclicCanMsg(0) = UcanDotNET.USBcanServer.tCanMsgStruct.CreateInstance(&H61F)
aCyclicCanMsg(0).m_bData(0) = &H40
aCyclicCanMsg(0).m_bData(1) = &H0
aCyclicCanMsg(0).m_bData(2) = &H10
aCyclicCanMsg(0).m_bData(3) = &H0
aCyclicCanMsg(0).m_dwTime = 1000 ' 1 second
aCyclicCanMsg(1) = UcanDotNET.USBcanServer.tCanMsgStruct.CreateInstance(&H71F, UcanDotNET.USBcanServer.eUcanMsgFrameFormat.USBCAN_MSG_FF_RTR)
aCyclicCanMsg(1).m_bDLC = 1
aCyclicCanMsg(1).m_dwTime = 1200 ' 1.2 seconds
bRet = Me.m_USBcanInst1.DefineCyclicCanMsg(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, aCyclicCanMsg)
bRet = Me.m_USBcanInst1.ReadCyclicCanMsg(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, aCyclicCanMsgReadBack)
bRet = Me.m_USBcanInst1.EnableCyclicCanMsg(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, _
UcanDotNET.USBcanServer.eUcanCyclicFlags.USBCAN_CYCLIC_FLAG_START)
End If
' init CAN channel 1
bRet = Me.m_USBcanInst1.InitCan(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH1, _
UcanDotNET.USBcanServer.eUcanBaudrate.USBCAN_BAUD_1MBit, _
UcanDotNET.USBcanServer.eUcanBaudrateEx.USBCAN_BAUDEX_USE_BTR01, _
UcanDotNET.USBcanServer.USBCAN_AMR_ALL, _
UcanDotNET.USBcanServer.USBCAN_ACR_ALL, _
ucanMode)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
' multi channel USB-CANmodul is present
Me.m_f2ndChannelInst1 = True
Me.StatusBarPanelText.Text = "Successfully connected to multi-channel USB-CANmodul"
Else
' single channel USB-CANmodul is present
Me.StatusBarPanelText.Text = "Successfully connected to single-channel USB-CANmodul"
End If
Me.m_fIsInst1Initialized = True
Me.m_RxThread = New Thread(AddressOf Me.ThreadProcReceive)
Me.m_RxThread.Start()
Else ' error while CAN channel 0 init
Me.m_USBcanInst1.Dispose()
Me.m_USBcanInst1 = Nothing
Me.StatusBarPanelText.Text = "Initialisation of CAN failed"
End If
Else ' error while hardware init
Me.m_USBcanInst1.Dispose()
Me.m_USBcanInst1 = Nothing
Me.StatusBarPanelText.Text = "Initialisation of Hardware failed"
End If
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
If m_fIsInst1Initialized = True Then
MenuItemConnect.Enabled = False
MenuItemShutdown.Enabled = True
End If
Else
Me.StatusBarPanelText.Text = "Already Connected"
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemExit.Click
' close the window
Me.Close()
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub CanMsgListView_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As EventArgs) Handles CanMsgListView.SelectedIndexChanged
' show the number of selected messages in the statusbar
Dim iCount As Integer = CanMsgListView.SelectedItems.Count
If iCount > 0 Then
Me.StatusBarPanelText.Text = iCount & " messages were selected"
Else
Me.StatusBarPanelText.Text = "No messages are selected"
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemSendMsg_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemSendMsg.Click
' User wishes to send a CAN message
If (m_fIsInst1Initialized = True) Then
Dim bRet As Byte = 0
' fill message data with current counter value
m_canMsgStruct(0).m_bData(0) = (m_dwMsgCount >> 24) And &HFF
m_canMsgStruct(0).m_bData(1) = (m_dwMsgCount >> 16) And &HFF
m_canMsgStruct(0).m_bData(2) = (m_dwMsgCount >> 8) And &HFF
m_canMsgStruct(0).m_bData(3) = (m_dwMsgCount) And &HFF
' send message
bRet = m_USBcanInst1.WriteCanMsg(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, m_canMsgStruct)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
Me.StatusBarPanelText.Text = "Sent CAN message"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
SyncLock (Me.m_USBcanInst1)
If (m_fTxEchoMode = False) Then
' add this message to list
addCanMessage(m_canMsgStruct(0), 0, False)
' ensure visibility of last message in list
CanMsgListView.EnsureVisible(CanMsgListView.Items.Count() - 1)
End If
End SyncLock
Else ' error
Me.StatusBarPanelText.Text = "Error while sending CAN message"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
End If
' increment message counter
m_dwMsgCount += 1
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemResetCan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemResetCan.Click
' User wants to reset the USB-CANmodul
If (m_fIsInst1Initialized = True) Then
' reset CAN channel 0
Dim bRet As Byte = 0
If (Me.m_USBcanInst1.IsCan0Initialized()) Then
bRet = m_USBcanInst1.ResetCan(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0, UcanDotNET.USBcanServer.eUcanResetFlags.USBCAN_RESET_ONLY_ALL_BUFF)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
Me.StatusBarPanelText.Text = "Successfully reset CAN channel 0"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' delete all messages in list
CanMsgListView.Items.Clear()
Else
Me.StatusBarPanelText.Text = "Error while reseting CAN channel 0"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
End If
End If
'If (m_f2ndChannelInst1 = True) Then
If (Me.m_USBcanInst1.IsCan1Initialized()) Then
bRet = m_USBcanInst1.ResetCan(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH1)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
Me.StatusBarPanelText.Text = "Successfully reset CAN channel 1"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' delete all messages in list
CanMsgListView.Items.Clear()
Else
Me.StatusBarPanelText.Text = "Error while reseting CAN channel 1"
Me.StatusBarPanelCode.Text = bRet.ToString("X2")
End If
End If
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemHwInfo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemHwInfo.Click
' Show Hardware Info Dialog
If m_fIsInst1Initialized = True Then
Dim hwInfoForm As HwInfoForm = New HwInfoForm
Me.StatusBarPanelText.Text = "Hardware Info"
hwInfoForm.SetUSBcan(m_USBcanInst1)
hwInfoForm.ShowDialog(Me)
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemShutdown_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemShutdown.Click
Me.StatusBarPanelText.Text = "USB-CANmodul is being shut down"
' tidy up all resources
DeleteAllResources()
If (Me.m_fIsInst1Initialized = True) Then
Me.MenuItemTxEchoMode.Enabled = True
Me.StatusBarPanelText.Text = "Not Connected"
End If
MenuItemConnect.Enabled = True
MenuItemShutdown.Enabled = False
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub MenuItemTxEchoMode_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItemTxEchoMode.Click
' toggle menu item
If (Me.MenuItemTxEchoMode.Checked() = True) Then
Me.MenuItemTxEchoMode.Checked = False
Else
Me.MenuItemTxEchoMode.Checked = True
End If
End Sub
#End Region
#Region " USBCAN events ################################################################### "
' NOTE:
' Do not call any API functions within an USBCAN event handler to prevent dead locks
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub USBcan_CanMsgReceived(ByVal bDeviceNr_p As Byte, ByVal bChannel_p As Byte) Handles m_USBcanInst1.CanMsgReceivedEvent
If (Me.m_DeviceNrInst1 = bDeviceNr_p) Then
' signal event for received CAN message(s)
Dim are As AutoResetEvent = CType(Me.m_RxWaitHandles(1), AutoResetEvent)
are.Set()
End If
End Sub
' NOTE:
' Do not call any API functions within an USBCAN event handler to prevent dead locks
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
'Private Sub USBcan_CanMsgReceived(ByVal bChannel_p As Byte) Handles m_USBcanInst1.CanMsgReceivedEvent
'
' ' at least one message can be read
' Dim canMsgStruct(4) As UcanDotNET.USBcanServer.tCanMsgStruct
' Dim dwCount As Integer = 0
' Dim bRet As Byte = 0
' Dim iIndexCanMsgStruct As Integer = 0
' Dim bOldChannel As Integer = bChannel_p
'
' Do ' loop until there are no more messages in queue
'
' bChannel_p = bOldChannel
'
' ' read message from queue
' bRet = Me.m_USBcanInst1.ReadCanMsg(bChannel_p, canMsgStruct, dwCount)
' If (bRet = UcanDotNET.USBcanServer.USBCAN_SUCCESSFUL) Then
'
' Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' Me.StatusBarPanelText.Text = dwCount.ToString() + " new CAN message received"
'
' SyncLock (Me.m_USBcanInst1)
' ' add messages to list
' For iIndexCanMsgStruct = 0 To dwCount - 1
' addCanMessage(canMsgStruct(iIndexCanMsgStruct), bChannel_p)
' Next
' End SyncLock
'
' ElseIf (bRet = UcanDotNET.USBcanServer.USBCAN_WARN_NODATA) Then
' ' Ok, but message queue is empty
' Else ' error
' Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' Me.StatusBarPanelText.Text = "Error while reading CAN message"
' End If
'
' Loop While (bRet = UcanDotNET.USBcanServer.USBCAN_SUCCESSFUL)
'
' ' ensure visibility of last message in list
' If (CanMsgListView.Items.Count() > 0) Then
' CanMsgListView.EnsureVisible(CanMsgListView.Items.Count() - 1)
' End If
'
'End Sub
' NOTE:
' Do not call any API functions within an USBCAN event handler to prevent dead locks
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub USBcan_FatalDisconnect(ByVal bDeviceNr_p As Byte) Handles m_USBcanInst1.FatalDisconnectEvent
' USB-CANmodul was disconnected
Me.EditStatusBar(0, "USB-CANmodul (Device No. " + bDeviceNr_p.ToString() + ") was manually disconnected!")
' tidy up all resources
DeleteAllResources()
MenuItemConnect.Enabled = True
MenuItemShutdown.Enabled = False
End Sub
' NOTE:
' Do not call any API functions within an USBCAN event handler to prevent dead locks
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub USBcan_Status(ByVal bDeviceNr_p As Byte, ByVal bChannel_p As Byte) Handles m_USBcanInst1.StatusEvent
' signal event for status changed
Dim are As AutoResetEvent = CType(Me.m_RxWaitHandles(2), AutoResetEvent)
are.Set()
End Sub
' NOTE:
' Do not call any API functions within an USBCAN event handler to prevent dead locks
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
'Private Sub USBcan_Status(ByVal bChannel_p As Byte) Handles m_USBcanInst1.StatusEvent
'
' ' status of USB-CANmodul changed
' Dim status As UcanDotNET.USBcanServer.tStatusStruct
' Dim bRet As Byte = 0
'
' Console.WriteLine("Status channel: " + bChannel_p.ToString())
' bRet = m_USBcanInst1.GetStatus(bChannel_p, status)
' If (bRet = UcanDotNET.USBcanServer.USBCAN_SUCCESSFUL) Then
' Me.StatusBarPanelText.Text = "CAN status of channel " + bChannel_p.ToString() + ": " + status.m_wCanStatus.ToString("X4")
' Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' Else
' Me.StatusBarPanelText.Text = "Error while reading status"
' Me.StatusBarPanelCode.Text = bRet.ToString("X2")
' End If
'
'End Sub
#End Region
#Region " Receiver thread ################################################################# "
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Public Sub ThreadProcReceive()
Dim fDoExit As Boolean = False
Do
' wait for receiving messages or exiting this thread
Dim index As Integer = WaitHandle.WaitAny(Me.m_RxWaitHandles)
If (index = 0) Then
' exit this thread
fDoExit = True
ElseIf (index = 1) Then
' receive all messages
ReceiveAllCanMessages()
ElseIf (index = 2) Then
' exit this thread
ReceiveStatus(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH0)
ReceiveStatus(UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_CH1)
End If
Loop While (fDoExit = False)
End Sub
#End Region
#Region " Subroutines and functions ####################################################### "
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub ReceiveAllCanMessages()
' at least one message can be read
Dim canMsgStruct(4) As UcanDotNET.USBcanServer.tCanMsgStruct
Dim dwCount As Integer = 0
Dim bRet As Byte = 0
Dim iIndexCanMsgStruct As Integer = 0
Dim bChannel As Byte
Do ' loop until there are no more messages in queue
' read message from queue
bChannel = UcanDotNET.USBcanServer.eUcanChannel.USBCAN_CHANNEL_ANY
bRet = Me.m_USBcanInst1.ReadCanMsg(bChannel, canMsgStruct, dwCount)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
'Me.StatusBarPanelCode.Text = bRet.ToString("X2")
'Me.StatusBarPanelText.Text = dwCount.ToString() + " new CAN message received"
Me.EditStatusBar(bRet, dwCount.ToString() + " new CAN message received")
' add messages to list
For iIndexCanMsgStruct = 0 To dwCount - 1
addCanMessage(canMsgStruct(iIndexCanMsgStruct), bChannel)
Next
ElseIf (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_WARN_NODATA) Then
' Ok, but message queue is empty
Else ' error
'Me.StatusBarPanelCode.Text = bRet.ToString("X2")
'Me.StatusBarPanelText.Text = "Error while reading CAN message"
Me.EditStatusBar(bRet, "Error while reading CAN message")
End If
Loop While (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL)
' ensure visibility of last message in list
CanMsgListView.Invoke(New MethodInvoker(AddressOf EnsureVisibleListViewItem))
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Protected Sub addCanMessage(ByRef canMsgStruct_p As UcanDotNET.USBcanServer.tCanMsgStruct, ByVal bChannel_p As Byte, Optional ByVal fRecvd As Boolean = True)
' add the supplied CAN message to the list
Dim astrItems(4) As String
Dim iIndex As Integer
Dim aListViewItem As ListViewItem() ' array
' column 0: Channel
astrItems(0) = bChannel_p.ToString()
' column 1: MsgID
If ((canMsgStruct_p.m_bFF And CType(UcanDotNET.USBcanServer.eUcanMsgFrameFormat.USBCAN_MSG_FF_EXT, Byte)) <> 0) Then
astrItems(1) = "0x" + canMsgStruct_p.m_dwID.ToString("X8")
Else
astrItems(1) = "0x" + canMsgStruct_p.m_dwID.ToString("X3")
End If
' column 2: Length
astrItems(2) = canMsgStruct_p.m_bDLC
' column 3: Data
If (canMsgStruct_p.m_bFF And UcanDotNET.USBcanServer.eUcanMsgFrameFormat.USBCAN_MSG_FF_RTR) <> 0 Then
astrItems(3) = "Remote Request"
Else
astrItems(3) = ""
For iIndex = 0 To canMsgStruct_p.m_bDLC - 1
astrItems(3) = astrItems(3) + canMsgStruct_p.m_bData(iIndex).ToString("X2") + " "
Next
End If
' column 4: Time
If ((canMsgStruct_p.m_bFF And UcanDotNET.USBcanServer.eUcanMsgFrameFormat.USBCAN_MSG_FF_ECHO) <> 0) Then
astrItems(4) = "Ex " + canMsgStruct_p.m_dwTime.ToString()
ElseIf fRecvd = True Then
astrItems(4) = "Rx " + canMsgStruct_p.m_dwTime.ToString()
Else
astrItems(4) = "Tx"
End If
' add new item to list
''''CanMsgListView.Invoke(New DelegateListViewItem(AddressOf AddListViewItem), New ListViewItem(astrItems))
aListViewItem = New ListViewItem() {} ' r.d.: this way is needed because VS2003 results in error "error BC30311" when using the line before
aListViewItem.SetValue(New ListViewItem(astrItems), 0)
CanMsgListView.Invoke(New DelegateListViewItem(AddressOf AddListViewItem), aListViewItem)
End Sub
Private Sub AddListViewItem(ByRef item As ListViewItem)
CanMsgListView.Items.Add(item)
End Sub
Private Sub EnsureVisibleListViewItem()
If (Me.CanMsgListView.Items.Count() > 0) Then
Me.CanMsgListView.EnsureVisible(CanMsgListView.Items.Count() - 1)
End If
End Sub
'--------------------------------------------------------------------------------------------
'
'--------------------------------------------------------------------------------------------
Private Sub ReceiveStatus(ByVal bChannel_p As Integer)
' status of USB-CANmodul changed
Dim status As UcanDotNET.USBcanServer.tStatusStruct
Dim bRet As Byte = 0
'Console.WriteLine("Status channel: " + bChannel_p.ToString())
bRet = Me.m_USBcanInst1.GetStatus(bChannel_p, status)
If (bRet = UcanDotNET.USBcanServer.eUcanReturn.USBCAN_SUCCESSFUL) Then
'Me.StatusBarPanelText.Text = "CAN status of channel " + bChannel_p.ToString() + ": " + status.m_wCanStatus.ToString("X4")
'Me.StatusBarPanelCode.Text = bRet.ToString("X2")
Me.EditStatusBar(bRet, "CAN status of channel " + bChannel_p.ToString() + ": " + status.m_wCanStatus.ToString("X4"))
' debug output to test the conversion funtion
Debug.WriteLine("CAN status: " + UcanDotNET.USBcanServer.GetCanStatusMessage(status.m_wCanStatus))
Else
'Me.StatusBarPanelText.Text = "Error while reading status"
'Me.StatusBarPanelCode.Text = bRet.ToString("X2")
Me.EditStatusBar(bRet, "Error while reading status")
End If
End Sub
Private Sub DeleteAllResources()
' tidy up all resources
If (Me.m_fIsInst1Initialized = True) Then
' abort the receiver thread
Dim are As AutoResetEvent = CType(Me.m_RxWaitHandles(0), AutoResetEvent)
For i As Integer = 1 To 5
are.Set()
'Me.m_RxThread.Abort()
If (m_RxThread.Join(500) = True) Then
Exit For
End If
Next i
Me.m_RxThread = Nothing
' shut down the complete USBCAN interface (means all CAN channels and hardware)
Me.m_USBcanInst1.Shutdown()
Me.m_fIsInst1Initialized = False
Thread.Sleep(500) ' sleep some time to prevent that some other threads are using some form recources
Me.m_USBcanInst1 = Nothing
End If
End Sub
Private m_bErrorCode As Byte
Private m_strStatusText As String
Private Sub ThreadSafeEditStatusBar()
Me.StatusBarPanelCode.Text = m_bErrorCode.ToString("X2")
Me.StatusBarPanelText.Text = m_strStatusText
End Sub
Public Sub EditStatusBar(ByVal bErrorCode_p As Byte, ByVal strStatus_p As String)
SyncLock Me
Me.m_bErrorCode = bErrorCode_p
Me.m_strStatusText = strStatus_p
Me.Invoke(New MethodInvoker(AddressOf ThreadSafeEditStatusBar))
End SyncLock
End Sub
#End Region
Private Sub StatusBar_PanelClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.StatusBarPanelClickEventArgs) Handles StatusBar.PanelClick
End Sub
End Class |
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