SCOUG-Programming Mailing List Archives

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Date:	Wed, 19 May 1999 22:24:30 PDT
From:	"Benedict G Archer" <bgarcher@beckman.com >
Reply-To:	scoug-programming@scoug.com
To:	scoug-programming@scoug.com
Subject:	SCOUG-Programming: #5

Content Type: text/plain

In <37426643.79A6@peterskye.com>, on 05/19/99
at 12:19 AM, Peter Skye said:

>>> The drivers I'd wondered about trying to develop
>>> are for simple ISA data acquisition or timing
>>> cards, e.g., cards with a small number of ADC's
>>> and programmable clocks, gates, counters etc.

>>Do you have spec sheets for the cards you want to use? If they're
>>essentially the same as a "parallel port" card, it should be "easy".

>The A/D, D/A and counters should be easy. Really not that much different
>that writing the driver in DOS once you have the PDD wrapper. The timers

But Steven, I've never written a driver in DOS,
I've assembled a number of experimental systems consisting of a PC with
plug-in ADC and digital IO cards to sample and collect data (analog or
video line) and contorl devices (e.g., shutters, flash lamps, pulsed
lasers, galvo-scanners, array sensors such as a linear diode array or ccd).
The cards have been various, all with DOS drivers and usually with a
library of functions (supplied with the card) linked into a C program (all
command line interface, but with a little graphics for simple real time
data display). Until recently most of the post acquisition data analysis
has been in OS/2, octave, Matlab in Win-OS2, even a little APL/2, and C
programs for initial data reduction. The cards have programmable timer
chips which enable one-shots, programmable gates etc. The thought I've
entertained for some time was to look for or build the drivers that would
let me use OS/2 for the data acquisition phase as well as post analysis.
I'd also have to code the library functions that I'd need. My naivete must
be obvious, but I'm anticipating Peter's tutorial as a start towards
understanding what the task I'm contemplating entails. More and more of
the available cards are PCI rather than ISA--something else to learn about.
(If only I had more time.)
Ben Archer

>-----------------------------------------------------------
>Steven Levine MR2/ICE #10183
>-----------------------------------------------------------

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