National Instruments NI-VXI - Manual (Page 40)

Chapter 3 Software Overview
NI-VXI User Manual 3-2 © National Instruments Corporation
CloseVXIlibrary ()
CloseVXIlibrary is the application termination routine, which
must be included at the end (or abort) of any application.
CloseVXIlibrary disables interrupts and frees dynamic memory
allocated for the internal RM table and other structures. You must
include a call to
CloseVXIlibrary at the termination of your
application (for whatever reason) to free all data structures allocated
by
InitVXIlibrary and disable interrupts. Failure to call
CloseVXIlibrary when terminating your application can cause
unpredictable and undesirable results. If your application can be
aborted from some operating system abort routine (such as a break key
or a process kill signal), be certain to install an abort/close routine to
call
CloseVXIlibrary .
CreateDevInfo (la)
CreateDevInfo creates a new entry in the dynamic NI-VXI RM table
for the specified logical address. It installs default NULL values into the
entry. You must use one of the SetDevInfo functions after this point
to change any of the device information as needed. This operation is
not needed for VME devices since it is recommended that you use the
Non-VXI Device Editor in the
VXIedit or VXItedit NI-VXI
resource editor utility. At the startup of your application,
InitVXIlibrary completely initializes the RM table to how the RM
configured the VXI system. No initial changes/creations are necessary
for VXI devices. You can use
CreateDevInfo to add non-VXI
devices or pseudo-devices (future expansion).
FindDevLA (namepat, manid, modelcode, devclass, slot,
mainframe, cmdrla, la)
FindDevLA scans the RM table information for a device with the
specified attributes and returns its VXI logical address. You can use
any combination of attributes to specify a device. A -1 (negative one)
or
"" specifies to ignore the corresponding field in the attribute
comparison. After finding the VXI logical address, you can use one of
the
GetDevInfo functions to get any information about the specified
device.