How I can create a driver for a simulation's card that I created ?

[Guiome]

I am testing an evalution software of LabWindows/CVI.
I want to develop a little program wich analyse the electronical signal of a card that I realised.
For this, I need a driver which etablish the interface between this component and my program, how I can realise it ?

[JuanCarlos]

Hi,

If I understand correctly, you developed some plug in hardware and you want to access it with CVI. Usually there would a be a driver created for the device that would be encapsulated as a DLL that you can call directly.

Another thing to take into account is that Windows NT/2000/XP will not allow direct memory or port acces without going into kernel mode, which is not easy. CVI has a set of functions that can help you access memory locations or ports.

The functions that you would use are under the "Utility library>> Port IO and Physical Memory access" CVI provides a driver that will allow this functions to work even in new Windows systems.

I hope that helps,

Juan Carlos
N.i.