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09.18.2008 at 04:57PM PDT, ID: 23744453
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7.6

Not receiving data on Comm port

Asked by djcminuz in Microsoft Excel Spreadsheet Software, VB Controls

Tags:

No data is being inputed on the worksheet. I verified that the data is coming in serially using hyperterm. How do I verify the data is coming in on MSCOMM and excel. I attached the code I have been helped with also to see if I am making errors as well. ThanksStart Free Trial 
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Option Explicit
 
Private Sub closePortBTN_Click()
mscomm1.PortOpen = False
End Sub
 
Private Sub openPortBTN_Click()
'Declarations
'Dim selPort As Integer
 
'initializations
'selPort = portCMBX.Text
 
'Setup comm port
    'If mscomm1.PortOpen Then mscomm1.PortOpen = False
    mscomm1.CommPort = 3 'Port that is being used for the connection
    mscomm1.Settings = "9600, n, 8, 1"
    mscomm1.InputLen = 0
 
    mscomm1.PortOpen = True
        If Not mscomm1.PortOpen Then GoTo pError
 
pError:
    Select Case Err.Number
 
    Case 8005:
        listBX.AddItem ("COM" & portCMBX.Value & " Unavailable")
        listBX1.Text = "COM " & portCMBX.Value & " Unavailable" & vbCrLf
        Err.Clear
        Resume Next
        
    Case 0:
        MSComm1_OnComm
        'On Error Resume Next
        
    Case Else:
        listBX.AddItem ("Error " & Err.Number & " : " & Err.Description)
        listBX1.Text = "Error " & Err.Number & " : " & Err.Description & vbCrLf
        Err.Clear
        Resume Next
    End Select
Exit Sub
 
End Sub
 
Private Sub UserForm_Initialize()
loadPorts
End Sub
 
Public Sub loadPorts()
'Variable declarations
Dim port As Integer
 
'Loop through system to find available com ports
For port = 1 To 16
    mscomm1.CommPort = port
    mscomm1.Settings = "9600,N,8,1"
    mscomm1.InputLen = 0
    On Error Resume Next 'GoTo portError 'Send to portError event it occurs
    mscomm1.PortOpen = True
    
    Select Case Err.Number
    Case 8005:
        listBX.AddItem ("COM" & port & " Unavailable")
        listBX1.Text = "COM" & port & " Unavailable" & " "
        Err.Clear
        'Resume Next
    Case 8002:
        listBX.AddItem ("COM" & port & " Does not exist")
        listBX1.Text = "COM" & port & " Does not exist" & " "
        Err.Clear
        'Resume Next
    Case 0:
        If mscomm1.PortOpen = True Then mscomm1.PortOpen = False
        portCMBX.AddItem ("COM " & port)
        'Resume Next
    Case 20:
        Err.Clear
    Case Else:
        listBX.AddItem ("Error " & Err.Number & " : " & Err.Description)
        listBX1.Text = "Error " & Err.Number & " : " & Err.Description & " "
        Err.Clear
        'Resume Next
    End Select
    
Next port
End Sub
 
Private Sub MSComm1_OnComm()
'Declarations
Dim dataBuff, p, Message As String
 
'MSComm events
Select Case mscomm1.CommEvent
 
' Errors
Case comEventBreak   ' A Break was received.
Case comEventCDTO    ' CD (RLSD) Timeout.
Case comEventCTSTO   ' CTS Timeout.
Case comEventDSRTO   ' DSR Timeout.
Case comEventFrame   ' Framing Error.
Case comEventOverrun ' Data Lost.
Case comEventRxOver  ' Receive buffer overflow.
Case comEventRxParity   ' Parity Error.
Case comEventTxFull  ' Transmit buffer full.
Case comEventDCB     ' Unexpected error retrieving DCB]
Case comEvReceive
    'Loop to gather gps data
    dataBuff = mscomm1.Input 'dataBuff & mscomm1.Input 'append Input data to our buffer
    p = InStr(dataBuff, vbCrLf)
    If p > 0 Then
        Message = Left$(dataBuff, p - 1) 'extract first full line
        ParseMessage (Message)
        dataBuff = Mid$(dataBuff, p + 2) 'remove the used data
    End If
 
    'ActiveSheet.Cells = p
 
End Select
 
End Sub
 
Sub ParseMessage(strMessage As String)
    Dim strData() As String
    Dim r As Integer
    Dim c As Integer
    
    strData = Split(strMessage, ",")
    r = 1
    Do Until ActiveSheet.Cells(r, 1) = ""
        r = r + 1
    Loop
    For c = 1 To UBound(strData) + 1
        ActiveSheet.Cells(r, c) = strData(c - 1)
    Next c
End Sub
[+][-]09.19.2008 at 02:27AM PDT, ID: 22519124

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[+][-]09.19.2008 at 02:33AM PDT, ID: 22519162

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[+][-]09.19.2008 at 02:34AM PDT, ID: 22519166

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[+][-]09.19.2008 at 03:49AM PDT, ID: 22519661

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[+][-]09.19.2008 at 06:20AM PDT, ID: 22520767

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About this solution

Zones: Microsoft Excel Spreadsheet Software, VB Controls
Tags: VBA, MSCOMM, Excel
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Solution Provided By: djcminuz
Participating Experts: 2
Solution Grade: A
 
 
[+][-]09.20.2008 at 01:34PM PDT, ID: 22531487

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[+][-]09.21.2008 at 02:18PM PDT, ID: 22536097

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[+][-]09.21.2008 at 04:10PM PDT, ID: 22536391

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