This example shows you how to develope a digital scope using NI PCI 5112 and VC++ 7.0. There is a SCOPE Soft Front Panel comes with NI PCI 5112, but it's 25M in size. I was surprised when I saw it. Using VC++ and drivers come with the PCI 5112 you can develope powerful digital scope which is faster and smaller in size. I fixed signal displaying bug on November 15th 2006, so it won't draw out of the scope screen.
I posted all the source code in a zip file. anyone can use it if you have any question , don not hesitate to contact me.
This program may not meet your requirement, but it shows you how to combine C++ and C, and a how to invoke NI functions in PCI 5112 libraries.
All the parameters related to NI 5112 is in ScopeParam.h and ScopeParam.cpp. I set all of them as global variables.
There are 4 important functions in this program:
ConfigScope() , you can change parameters in this function to meet your requirement.
DoDigitalization() is function to initialize an acquisition and fetch data then display. I use a timer to call it repeatedly
OnCbnSelchangeComboMtb() is the function adjust Time base division (in microsecond) by reseting sample rate
OnHscroll() is time delay which adjust trigger delay.
Complie notes: I have to select not use the precompiled header function in project 's properties setup. I also include ivi.lib and niscope.lib in my project. If you need to recompile it you need to change the path of these 2 files accoding to you installation of NI5112.
Test Note: Connect Channel 0 of PCI 5112 to a sine wave (-2.5~ +2.5 ) , you can test it.
NOTE: We don't need Measurement Studio Visual C++ Support 1.0 to develop this program. I have to select an application software to post this article. You just need Visual C++.net 2003 (I call it VC ++ 7.0 ) and drivers comes with NI PCI 5112 .
Other requirements:
Visual studio c++.net 2003
