Chapter 3
Developing Your Application
PCI-Based MXI-2 Interface for Windows
3-10
ni.com
Debugging
NI Spy and VISAIC are useful utilities for identifying the causes of
problems in an application.
NI Spy tracks the calls an application makes to National Instruments
programming interfaces, including NI-VISA, NI-VXI, and NI-488. NI Spy
highlights functions that return errors, so during development you can
quickly spot which functions failed during a program’s execution. NI Spy
can log the calls the program makes to these drivers so you can check them
for errors at your convenience, or use the NI Spy log as a reference when
discussing the problem with National Instruments technical support.
Figure 3-4 shows an example of a normal error returned from a call to
viMemAlloc
when no memory has been shared.
Figure 3-4.
NI-Spy
