I've got a question for you Hal. We can take it offline if it's more than a response or two. I opened two sockets to the adapter in one program and found the same socket id. OK, that tells me that I have to address each device before sending commands to it, rather than having a separate socket id. And it makes sense. But how does it work when I have multiple programs wanting to access different devices? Am I doing to need to put some lock code in so that the adapter is globally locked to one program while it sending or receiving to/from a device to prevent the two programs stepping on each other? For example, I've got 2 counters and a voltmeter. It's no stretch to think of two different tests, or even three using those instruments separately.
Bob >________________________________ > From: Hal Murray <[email protected]> >To: Discussion of precise time and frequency measurement <[email protected]> >Sent: Monday, November 11, 2013 11:08 PM >Subject: Re: [time-nuts] linux-gpib working on a RasPI > > > >> With the Prologix unit, I had a homebrew client library (in "C") up and >> running well enough to make me happy the day it arrived. I do not use >> NI-VISA, and trying to figure out that mares nest just left me completely >> mystified. I'm a good enough C programmer to do the things I need once I >> have connectivity and a simple interface. No connection to Prologix, etc, >> etc, etc. > >Another thumbs up on the Prologix unit. > >I'm not sure I had it running the day it arrived, but it was close to that. >(I may have been busy with something else.) My only stumbling was getting >the flow control turned on. > >YMMV etc. I prefer working with low level bits rather than fancy GUI stuff. > >I have one connected to a HP 5334B. It's been collecting data for several >years. > >My demo/starter code is out on the web. I'll dig up the URL if anybody has >problems finding it. > > > >-- >These are my opinions. I hate spam. > > > >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. > > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
