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How to receive 43 bytes of data from a Microcontroller using MSCOMM in VB 6 and display them onto a vb form ?

Posted on 2004-11-15
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Last Modified: 2013-12-25
I am using VB6 and MSCOMM to create a link between my PC and Microcontroller.

I am sending 43 bytes of data to my Microrcontroller from an array of 43 bytes and writing it to the EPROM of my microcontroller. I wan to be able to read that data later on and display it on a form.

I can successfully receive a byte when a Comm RX event is triggered.

but not sure how to receive all 43 bytes and display them onto a vb form (form text, combo etc controls)

I am sending a query command to microcontroller then it sends me all these byte. I am able to see this data
coming on scope but not able to receive it. Please help ?
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Question by:adnansami
  • 2
4 Comments
 
LVL 6

Expert Comment

by:mmusante
ID: 12582424
Try this ...

Private Sub Command1_Click()
   Dim InString As String
   MSComm1.InputLen = 43

   If MSComm1.InBufferCount >= 43 Then
         InString = MSComm1.Input
   End If
End Sub

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Author Comment

by:adnansami
ID: 12594337
Thanks for the post
I tired it and it did not work ?
What about RThreshold property ? I want to receive all this on a comm event.
How do I parse it and display it onto the controlls
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LVL 6

Expert Comment

by:mmusante
ID: 12594491
You can try something like this ...

Dim InString As String

private sub Form_Load()
' ....
  MSComm1.InputLen = 43
  MSComm1.RThreshold = 43
' ....
end sub

Private Sub MSComm1_OnComm ()
   Select Case MSComm1.CommEvent
        Case comEvReceive      
               InString = MSComm1.Input
   End Select
End Sub

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