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GPIB woth microcontroller (AVR)

B

Benny

Jan 1, 1970
0
I need to control 8 relays by GPIB, therefore I'm looking for a simple
design with a GPIB chip (9914/7210 or TNT488) using a microcontroller,
preferrable a AVR-type chip.
I searched the internet but could not find any references to such a
thing.
Is there anyone who can help me with this?
regards,

Ben
 
B

Benny

Jan 1, 1970
0
GPIB is an idiotic design (not your fault). I always try to design it
*out* of any project I do. Do you have any other options?
No, due to the nature of the system it MUST be GPIB. This has to do
with the fact that all other devices are on a fiber-link since they
must be isolated from the controller (EMC application)
 
L

Luhan Monat

Jan 1, 1970
0
Benny said:
I need to control 8 relays by GPIB, therefore I'm looking for a simple
design with a GPIB chip (9914/7210 or TNT488) using a microcontroller,
preferrable a AVR-type chip.
I searched the internet but could not find any references to such a
thing.
Is there anyone who can help me with this?
regards,

Ben

GPIB is an idiotic design (not your fault). I always try to design it
*out* of any project I do. Do you have any other options?
 
M

maxfoo

Jan 1, 1970
0
No, due to the nature of the system it MUST be GPIB. This has to do
with the fact that all other devices are on a fiber-link since they
must be isolated from the controller (EMC application)

Design your microcontroller for the very common USB interface then
purchase a usb to gpib adapter from National Instruments.

www.ni.com




Remove "HeadFromButt", before replying by email.
 
C

Clifford Heath

Jan 1, 1970
0
Benny said:
No, due to the nature of the system it MUST be GPIB.

What about embedding an ISA-bus GPIB card?
 
M

mike

Jan 1, 1970
0
Clifford said:
What about embedding an ISA-bus GPIB card?

I have a similar problem except that I want to control
the GPIB directly from the Microcontroller pins.
I only need a TINY subset of GPIB to control ONE
instrument talker/listener. uC is always controller.
No, I can't use any other interface cause that's what the Power supply has.
No, I can't use a NI card, 'cause that's what I'm replacing.

I'm too lazy to decipher the 488 spec. I need only a tiny part, but
is't hard to figure out exactly which tiny part. Would be nice to find some
already-done boiler plate code. I'd prefer PIC, cause that's what I'm
set up for.

Doing GPIB with a GPIB controller chip is a lot easier.
I wrote a VB6 class module that implements a tiny subset of GPIB
by bit-banging a 9914 chip.
Also have a class module for a TEK PS2521G Programmable power supply
that uses it.
It's horrible code, but it does work.
mike

--
Bunch of stuff For Sale and Wanted at the link below.
Toshiba & Compaq LiIon Batteries, Test Equipment
Honda CB-125S
TEK Sampling Sweep Plugin and RM564
Tek 2465 $800, ham radio, 30pS pulser
Tektronix Concept Books, spot welding head...
http://www.geocities.com/SiliconValley/Monitor/4710/
 
C

CFoley1064

Jan 1, 1970
0
I need to control 8 relays by GPIB, therefore I'm looking for a simple
design with a GPIB chip (9914/7210 or TNT488) using a microcontroller,
preferrable a AVR-type chip.
I searched the internet but could not find any references to such a
thing.
Is there anyone who can help me with this?
regards,

Ben

Hi, Ben. For controlling bitwise I/O with the GPIB, a lot of engineers will go
with the ICS electronics line of interface cards. Once you go with a "home
brew" design, with all the time and effort, it's always better to just bite the
bullet and spend a few hundred dollars more for a store-bought solution. If
you want a board with some relays, try the 4864 OEM Board, with 16 relays built
in. If all you want is digital signals, use the 4803 GPIB to Parallel Digital
Interface Board, which has 40 digital I/O siignals.

Look, everybody has a chip on their shoulder about the GPIB, and in fact, it's
a lot like democracy -- the worst conceivable system of governance except for
everything else. Its big advantage is that, once everything's going, you've
got a robust system where you can actually replace and fix things without
having to re-engineer the whole project. When you start adding home-brew
stuff, you're walking away from that advantage. For a onesie-twosie
measurement system, IMO it isn't worth it.

http://www.icselect.com/gpib_intfc_ds.html

Good luck.
Chris
 
M

Michael A. Terrell

Jan 1, 1970
0
CFoley1064 said:
Look, everybody has a chip on their shoulder about the GPIB, and in fact, it's
a lot like democracy -- the worst conceivable system of governance except for
everything else. Its big advantage is that, once everything's going, you've
got a robust system where you can actually replace and fix things without
having to re-engineer the whole project. When you start adding home-brew
stuff, you're walking away from that advantage. For a onesie-twosie
measurement system, IMO it isn't worth it.

http://www.icselect.com/gpib_intfc_ds.html

Good luck.
Chris

If you consider the age of the GPIB/HPIB/IEEE488 buss, and that it
was only intended for H-Ps own use, it has held up fairly well. There
was a project in BYTE magazine years ago to convert IEEE488 to a
parallel port to drive a centronics printer interface. It was fairly
simple, because it was an output only interface. It was probably some
time in the first two years of the first issue. I might still have it in
storage, but I have no idea which box it would be in, right now.

--
18 days!


Michael A. Terrell
Central Florida
 
M

Mike Harrison

Jan 1, 1970
0
I need to control 8 relays by GPIB, therefore I'm looking for a simple
design with a GPIB chip (9914/7210 or TNT488) using a microcontroller,
preferrable a AVR-type chip.
I searched the internet but could not find any references to such a
thing.
Is there anyone who can help me with this?
regards,

Ben
Ines do a gpib chips, and supply driver source code for them aimed at microcontroller applications
http://www.inesinc.com/
 
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