Scott,

Thanks for the response.

Yes.  My company manufactures a variety of instruments that communicate
solely with serial.  We have been using NI-VISA and are happy with it,
but NI-VISA requires an installation that is often larger than the
application we supply to our customers, and there are licensing
restrictions for distribution. I was hoping to develop our own serial
functions in a much smaller package than NI-VISA.  This is why I am
interested in using the Windows API.  NI-VISA with its support for so
many kinds of instruments seems like overkill for our application.  When
the customer installs the NI-VISA driver they end up installing features
to support GPIB etc. that are not needed for our application.

Allen 

-----Original Message-----
From: Scott Hannahs [mailto:[EMAIL PROTECTED] 
Sent: Monday, March 08, 2004 6:14 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: API Serial Functions


At 4:27 PM -0800 3/8/04, C. Allen Weekley wrote:
>Has anyone written VI's to perform serial I/O using functions in 
>kernel32.dll?

Allen,
Why re-invent the wheel?  Actually the people who did this are the
people who wrote the VISA library. Any reason not to use their work?

-Scott


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