Re: [Linux-gpib-general] Strange errors with NI GPIB-USB-HS

[dave p. <dpe...@gm...>]

Hi Jakub,
One way to check is to look at: the output of the syslog lines with "gpib"
in them and the output of "lsusb -d 3923:",  with the adapter plugged in.
cheers,
-dave

On Mon, 1 Aug 2022 at 15:02, Ladman Jakub <la...@vo...> wrote:

> Hello
> I am new to this maling-list and with only limited experience with GPIB
> in general.
> I have NI GPIB-USB-HS hardware, which I want to use with linux-gpib.
> I have tried several versions of the linux-gpib (both kernel and user
> part) including 4.3.4 and 4.3.5. with my computer with kernel:
>
> $ uname -r
>
> 5.15.0-43-generic (ubuntu 22.04)
> Also my friends computer with kernel 3.16.0-4 (some old debian) and
> linux-gpib-3.2.21, which he is using regularly with another piece of
> GPIB-USB-HS interface.
> The behavior was the same, with the exception that the error messages
> were slightly different.
> The kernel module ni_gpib_b.ko is successfuly loaded, the rights are
> set, user is in the gpib group, the /dev/gpib0 is created among others.
>
> findlisteners lists my two devices (HP 3478A multimeter and AMREL
> PPS-1002 power supply) at pads 22 and 12.
> When trying to communicate with the devices from ibtest, ibterm or from
> python script I've got something similar to this:
>
> ibterm>MODEL?
> ibterm error: Unable to write to device at pad 12
>
> or
> :m
> gpib status is:
> ibsta = 0x8100 < ERR CMPL >
> iberr= 0
> EDVR 0: OS error
>
> ibcnt = 5
> But everytime I tried this, the controlled devices were signalizing
> "RMT" "TALK" or so on (from top of my head, because I am at different
> place now)
>
> I was convinced, that the hardware is half dead until I checked it from
> windows with NI software.
>
> I have installed whole bundle of software and then opened NI MAX.
>
>  From there i was completely able to scan and detect the devices and to
> communicate with those in the first place without any configuration.
>
> I have also tried the NI software for linux with ni488k.ko kernel
> module  (among others; instaled from official .deb package), but then
> the kernel module seems to completely ignore the hardware device. The
> userspace applications don't see any gpib interfaces.
>
> I dont know whether my device is a fake one or not, I bought it with
> huge discount from china, but everyting seems legit.
>
> The packaging was nice and clean, there was safety sticker on the bubble
> bag inside the box.
>
> The case is made of quality plastics, the color is as usual, the sticker
> on it is looking ok, the CD-ROM or DVD-ROM included is looking good, the
> booklet is good. There is "Made in Hungary" noted on everything which is
> also legit because they have manufacturing plant in Hungary.
>
> Both the windows software from the 2016 CD/DVD and the lastest form
> ni.com is functioning perfectly.
>
> Only the linux versions, both opensource and the ni provided are non
> functional.
>
> Is there a posibility to check the firmware version and compare it to a
> known to work interface piece?
>
> Any other tip?
>
> Thank you very much
> Jakub Ladman
>
>
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