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I have been developing a driver in C++ to interface with specific hardware controlled with the Enhanced Parallel Port. My problem is when translating the routines that control the EPP into LabVIEW under Windows 2000. Has anyone built some VIs to control the EPP under win2000? Thank you very much in advance, Rafael
you should divide your problem into two steps - first a simple output/input should work and then step two: bidirectional operation, if needed. Find attached a simple prog, that writes and reads some values to/from LPT - use a scope for test or a DMM in debug mode - file.png shows bahaviour at bit0 & bit1 (used OS - WinNT). In addition you need accesshw installed on your machine. If there are still open questions - write to: werner.hasche@web.de
I wrote some EPP-Functions in ANSI C, that can be easily translated to Labview. If you want I can send you the Functions and some VIs for controlling the parallel port in BYTE-Mode.
On Sun, 21 Apr 2002 09:26:46 -0700 (PDT), RBS wrote: > I have been developing a driver in C++ to interface with specific > hardware controlled with the Enhanced Parallel Port. My problem is > when translating the routines that control the EPP into LabVIEW under > Windows 2000. Has anyone built some VIs to control the EPP under > win2000? Thank you very much in advance, Rafael > .
You need to down load the accesshw VI's from the NI website to allow acces to the port from LabVIEW - search on accesshw
