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open source GPIB adapter

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dazz1:

--- Quote from: tautech on June 11, 2023, 05:32:19 am ---...
Or is it  :horse: ?

--- End quote ---

Yes it is  :horse: and  |O

dazz1:
Hi
I have been reading into the code.  The code to drive the LED doesn't match the documentation that well. 

So if I am reading the code correctly (I am a C virgin) then:
if the USB is connected, the LED stays on
Code then goes into a loop.  The LED is switched off if no GPIB device is connected.
if no GPIB device is connected and off, the LED flashes at 2Hz until.
a GPIB device is connected and on, then the LED flashes at 5Hz.

It also flashes 250ms pulses when USB data is transferred.

So the LED indicates activity, but the LED is shared between GPIB and USB.


I am looking at changing the code to show USB status/power on the RED led, and GPIB status/data transfer on the GREEN LED.
So:
RED ON = USB power on
RED Flashing Slow = USB enabled
RED Flashing Fast = USB active

GREEN OFF = no GPIB device connected.
GREEN ON = GPIB device connected and off
GREEN Flashing Slow = GPIB device connected, on and enabled.
GREEN Flashing Fast = GPIB device active.

Thoughts?  Does this make sense??

rssenior:
Do you have a bill of materials for your version dazz1? I thought I saw one once, but I'm not seeing it now.

dazz1:

--- Quote from: rssenior on June 24, 2023, 05:29:56 am ---Do you have a bill of materials for your version dazz1? I thought I saw one once, but I'm not seeing it now.

--- End quote ---

I added a BOM for the Xyphro version in issues on his Git page.

Attached is a BOM for my version with part numbers from element14. 
I now have the parts and the PCBs, but not enough time to assemble yet.

intabits:

--- Quote from: dazz1 on June 24, 2023, 06:36:29 am ---I now have the parts and the PCBs, but not enough time to assemble yet.

--- End quote ---

Have you assembled and tried one yet?

I'm currently designing an adapter PCB for this same connector, and as far as I can tell, your connector is arse-about.
You would need to mount it to the bottom of the PCB shown in reply #61.

Or is it me that has it wrong?

I'm looking at these connector diagrams:-
https://www.hp9845.net/9845/tutorials/hpib/  (bottom of page)
http://www.hit.bme.hu/~papay/edu/GPIB/tutor.htm
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000kIoVSAU
https://www.tmatlantic.com/encyclopedia/index.php?ELEMENT_ID=14204

All these have DIO1 at top-left when looking into the connector with the wide side at the left. And that would also go to the top-left pad on your PCB, but your DIO1 is at the bottom-left!?

I was just about to send my design to JCLPCB after a final check, but now I'm confused....

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