MSCOMM/Serial Communications

[Leighton21]

Hi All,

Just a Question?

I have opened a hyperterminal session and then created a vb app with a MSCOMM control.
What I was trying to do was to send data to the hyperterminal session through the VB app.

I have tried the following code (on a button click)

Private Sub Command1_Click()
With MSComm1
If .PortOpen = True Then
'send the data (including a tailing carriage return as often needed)
.Output = "TEST" & vbCr
End With
End Sub

But it says that the port is already open.

Therefore is it possible to have a COM port open with an APP such as hyperterminal and then simulate the transmission of data through a VB app?

Cheers

 

[HyperEngineer]

This will not work. You can not have two applications open the same comm port at the same time. I don't know if there is a way to open an instance of hyperterminal from VB, then pass the required strings. Maybe someone can help us there.


HyperEngineer
If it ain't broke, it probably needs improvement.