Private Sub vbMain()
Dim stat
Dim dfltRM
Dim sesn
Dim eType
Dim eData
Dim statID | As ViStatus
As ViSession
As ViSession
As ViEventType
As ViEvent
As Integer |
Rem Begin by initializing the system
stat = viOpenDefaultRM(dfltRM)
If (stat < VI_SUCCESS) Then
Rem Error initializing VISA...exiting
Exit Sub
End If
Rem Open communication with VXI Device at Logical Address 16
Rem NOTE: For simplicity, we will not show error checking
stat = viOpen(dfltRM, "VXI0::16::INSTR", VI_NULL, VI_NULL, sesn)
Rem Enable the driver to detect the interrupts
stat = viEnableEvent(sesn, VI_EVENT_VXI_SIGP, VI_QUEUE, VI_NULL)
Rem Send the commands to the oscilloscope to capture the
Rem waveform and interrupt when done
stat = viWaitOnEvent(sesn, VI_EVENT_VXI_SIGP, 5000, eType, eData)
If (stat < VI_SUCCESS) Then
Rem No interrupts received after 5000 ms timeout
stat = viClose (dfltRM)
Exit Sub
End If
Rem Obtain the information about the event and then destroy the
Rem event. In this case, we want the status ID from the interrupt.
stat = viGetAttribute(eData, VI_ATTR_SIGP_STATUS_ID, statID)
stat = viClose(eData)
Rem Your code should read data from the instrument and process it.
Rem Stop listening to events
stat = viDisableEvent(sesn, VI_EVENT_VXI_SIGP, VI_QUEUE)
Rem Close down the system
stat = viClose(sesn)
stat = viClose(dfltRM)
End Sub |
