Menu
▾
▴
linux-gpib-general
|
From: Alexander H. <ale...@xx...> - 2020-11-22 09:24:39
|
Hi My understanding is this: * linux-gpib implements drivers for many GPIB interfaces and provides a userspace API on top of that, which is great. * pyvisa depends on vendor drivers like NI-VISA or the equivalent of other vendors. Is this correct? I tried to get NI-VISA working yesterday in order to be able to use pyvisa with a NI PCI board, on a distribution that they do not want to support, on a i686 box. I gave up after some hours, the configure script they have in there was written by drunk monkeys. So, here is my question: Did anybody consider to make the linux-gpib drivers available to pyvisa? -Alex [1] https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 |
|
From: Roel J. <r.j...@sc...> - 2020-11-22 10:12:44
|
Hi Alex, You may want to have a look at pyvisa-py. That seems to work nicely for me without having to install the NI-VISA drivers. Cheers, Roel -----Original Message----- From: Alexander Huemer <ale...@xx...> To: Linux GPIB general mailinglist < lin...@li...> Subject: [Linux-gpib-general] Compatibility layer for pyvisa? Date: Sun, 22 Nov 2020 08:57:29 +0000 Hi My understanding is this: * linux-gpib implements drivers for many GPIB interfaces and provides a userspace API on top of that, which is great. * pyvisa depends on vendor drivers like NI-VISA or the equivalent of other vendors. Is this correct? I tried to get NI-VISA working yesterday in order to be able to use pyvisa with a NI PCI board, on a distribution that they do not want to support, on a i686 box. I gave up after some hours, the configure script they have in there was written by drunk monkeys. So, here is my question: Did anybody consider to make the linux-gpib drivers available to pyvisa? -Alex [1] https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 _______________________________________________ Linux-gpib-general mailing list Lin...@li... https://lists.sourceforge.net/lists/listinfo/linux-gpib-general |
|
From: Alexander H. <ale...@xx...> - 2020-11-22 11:18:32
|
Hi That looks promising. I actually already had it installed but didn't look at it yet. From the README I figure that it has linux-gpib as a dependency. I'll have to look into it. Thanks for the suggestion. -Alex On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote: > Hi Alex, > > You may want to have a look at pyvisa-py. That seems to work nicely > for me without having to install the NI-VISA drivers. > > Cheers, > Roel > > -----Original Message----- > From: Alexander Huemer <ale...@xx...> > To: Linux GPIB general mailinglist < > lin...@li...> > Subject: [Linux-gpib-general] Compatibility layer for pyvisa? > Date: Sun, 22 Nov 2020 08:57:29 +0000 > > Hi > > My understanding is this: > * linux-gpib implements drivers for many GPIB interfaces and provides > a > userspace API on top of that, which is great. > * pyvisa depends on vendor drivers like NI-VISA or the equivalent of > other vendors. > > Is this correct? > > I tried to get NI-VISA working yesterday in order to be able to use > pyvisa with a NI PCI board, on a distribution that they do not want to > support, on a i686 box. I gave up after some hours, the configure > script they have in there was written by drunk monkeys. > > So, here is my question: Did anybody consider to make the linux-gpib > drivers available to pyvisa? > > -Alex > > [1] > https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 > > > _______________________________________________ > Linux-gpib-general mailing list > Lin...@li... > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > |
|
From: W <dat...@gm...> - 2020-11-22 16:31:40
|
Hi Alex I followed the same path as you and gave up with these NI-Visa drivers. Now I have something working with linux-gpib, pyvisa/pyvisa-py on an old PC (Pentium 4) A couple of days ago, I described my process to have this software installed. If you are interested, you can find it here <https://github.com/daturach/Documentation/wiki/GPIB:-Building-an-instrumentation-lab-with-python-libraries> Good luck Walter On 22.11.2020 12:18, Alexander Huemer wrote: > Hi > > That looks promising. I actually already had it installed but didn't > look at it yet. From the README I figure that it has linux-gpib as a > dependency. I'll have to look into it. > Thanks for the suggestion. > > -Alex > > On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote: >> Hi Alex, >> >> You may want to have a look at pyvisa-py. That seems to work nicely >> for me without having to install the NI-VISA drivers. >> >> Cheers, >> Roel >> >> -----Original Message----- >> From: Alexander Huemer <ale...@xx...> >> To: Linux GPIB general mailinglist < >> lin...@li...> >> Subject: [Linux-gpib-general] Compatibility layer for pyvisa? >> Date: Sun, 22 Nov 2020 08:57:29 +0000 >> >> Hi >> >> My understanding is this: >> * linux-gpib implements drivers for many GPIB interfaces and provides >> a >> userspace API on top of that, which is great. >> * pyvisa depends on vendor drivers like NI-VISA or the equivalent of >> other vendors. >> >> Is this correct? >> >> I tried to get NI-VISA working yesterday in order to be able to use >> pyvisa with a NI PCI board, on a distribution that they do not want to >> support, on a i686 box. I gave up after some hours, the configure >> script they have in there was written by drunk monkeys. >> >> So, here is my question: Did anybody consider to make the linux-gpib >> drivers available to pyvisa? >> >> -Alex >> >> [1] >> https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 >> >> >> _______________________________________________ >> Linux-gpib-general mailing list >> Lin...@li... >> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general >> > > _______________________________________________ > Linux-gpib-general mailing list > Lin...@li... > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general |
|
From: Alexander H. <ale...@xx...> - 2020-11-22 23:27:32
|
Things start to move here.
Your installation instructions were very useful, Walter, thank you!
I found that I had to add --enable-python-binding to ./configure and add
PYTHONPATH="/usr/local/lib/python3.7/site-packages/" to /etc/profile,
but eventually I got:
GPIB INSTR: Available via Linux GPIB (b'4.3.3')
GPIB INTFC: Available via Linux GPIB (b'4.3.3')
in `python3 -m visa info`. Yay!
I then proceeded to play with `python -m visa shell` and visa_test.py
and managed to enable and disable the output of my power supply and
write fancy text to the display.
There are situations in which i get error messages in the kernel ring
buffer like these though:
Nov 22 11:53:43 gpib kernel: tnt4882: write bus error
and
Nov 22 11:41:46 gpib kernel: tnt4882: minor 0 read timed out
Nov 22 11:41:46 gpib kernel: tnt4882: read timed out
Also, pyvisa often exits with:
pyvisa.errors.VisaIOError: VI_ERROR_SYSTEM_ERROR (-1073807360): Unknown system error (miscellaneous error).
and
pyvisa.errors.VisaIOError: VI_ERROR_TMO (-1073807339): Timeout expired before operation completed.
I haven't figured out yet why that is. Is it obvious what I am doing
wrong here?
My instruments display things like 'Rmt Addr Err' and 'REM MTA'. Not
sure yet what these mean, but 'Err' definitely doesn't sound right.
One of my goals is to be able to get screenshots off my scope.
The programming manual says:
Example:
210 CLEAR 707 ! Clear interface buffers.
220 OUTPUT 707;"PLOT" ! Starts plotter buffering.
230 SEND 7;UNT UNL ! Clears bus, set ATN line at controller true.
240 SEND 7;LISTEN 5 ! Tells plotter at address 5 to listen.
250 SEND 7;TALK 7 ! Sets 54200A/D to talk mode.
260 SEND 7;DATA ! Sets ATN line at controller to false
270 ! so data can be transferred.
280 WAIT 50 ! Wait 50 seconds for transfer to finish
290 ! Note: If programming, use the SRQ capabilities
300 ! of the 54200A/D to determine if the transfer
310 ! is complete. Attempting to program the
320 ! 54200A/D while making a hardcopy dump will
330 ! cause errors.
How would I go about receiving such a plot with pyvisa or linux-gpib
directly? Can it be done? A quick web search didn't provide insights.
Thanks,
-Alex
On Sun, Nov 22, 2020 at 05:19:58PM +0100, W wrote:
> Hi Alex
>
> I followed the same path as you and gave up with these NI-Visa drivers. Now
> I have something working with linux-gpib, pyvisa/pyvisa-py on an old PC
> (Pentium 4)
>
> A couple of days ago, I described my process to have this software
> installed. If you are interested, you can find it here <https://github.com/daturach/Documentation/wiki/GPIB:-Building-an-instrumentation-lab-with-python-libraries>
>
> Good luck
>
> Walter
>
> On 22.11.2020 12:18, Alexander Huemer wrote:
> > Hi
> >
> > That looks promising. I actually already had it installed but didn't
> > look at it yet. From the README I figure that it has linux-gpib as a
> > dependency. I'll have to look into it.
> > Thanks for the suggestion.
> >
> > -Alex
> >
> > On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote:
> > > Hi Alex,
> > >
> > > You may want to have a look at pyvisa-py. That seems to work nicely
> > > for me without having to install the NI-VISA drivers.
> > >
> > > Cheers,
> > > Roel
> > >
> > > -----Original Message-----
> > > From: Alexander Huemer <ale...@xx...>
> > > To: Linux GPIB general mailinglist <
> > > lin...@li...>
> > > Subject: [Linux-gpib-general] Compatibility layer for pyvisa?
> > > Date: Sun, 22 Nov 2020 08:57:29 +0000
> > >
> > > Hi
> > >
> > > My understanding is this:
> > > * linux-gpib implements drivers for many GPIB interfaces and provides
> > > a
> > > userspace API on top of that, which is great.
> > > * pyvisa depends on vendor drivers like NI-VISA or the equivalent of
> > > other vendors.
> > >
> > > Is this correct?
> > >
> > > I tried to get NI-VISA working yesterday in order to be able to use
> > > pyvisa with a NI PCI board, on a distribution that they do not want to
> > > support, on a i686 box. I gave up after some hours, the configure
> > > script they have in there was written by drunk monkeys.
> > >
> > > So, here is my question: Did anybody consider to make the linux-gpib
> > > drivers available to pyvisa?
> > >
> > > -Alex
> > >
> > > [1]
> > > https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223
> > >
> > >
> > > _______________________________________________
> > > Linux-gpib-general mailing list
> > > Lin...@li...
> > > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general
> > >
> >
> > _______________________________________________
> > Linux-gpib-general mailing list
> > Lin...@li...
> > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general
> _______________________________________________
> Linux-gpib-general mailing list
> Lin...@li...
> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general
|
|
From: W <dat...@gm...> - 2020-11-23 09:18:58
|
Hello Alex I am glad you find it useful. I guess you have a HP 54200. Did you manage to get the response of an ID command? The small script you sent supposed that your instrument is set to address 7. If you have visa timeout errors, that means your instrument did not respond to a query or didn't have the time to do it. You can increase that timeout. (https://pyvisa.readthedocs.io/en/1.8/resources.html) Try something like that for a first test: import pyvisa as visa rm = visa.ResourceManager('@py') instr = rm.open_resource('GPIB0::7::INSTR') instr.read_termination = '\n' instr.write_termination = '\n' instr.write('ID?') print(instr.read_raw()) instr.close() Check your ID command in your manual. It may be different. Check as well your terminations characters. Walter On 23.11.2020 00:26, Alexander Huemer wrote: > Things start to move here. > Your installation instructions were very useful, Walter, thank you! > I found that I had to add --enable-python-binding to ./configure and add > PYTHONPATH="/usr/local/lib/python3.7/site-packages/" to /etc/profile, > but eventually I got: > > GPIB INSTR: Available via Linux GPIB (b'4.3.3') > GPIB INTFC: Available via Linux GPIB (b'4.3.3') > > in `python3 -m visa info`. Yay! > > I then proceeded to play with `python -m visa shell` and visa_test.py > and managed to enable and disable the output of my power supply and > write fancy text to the display. > > There are situations in which i get error messages in the kernel ring > buffer like these though: > > Nov 22 11:53:43 gpib kernel: tnt4882: write bus error > > and > > Nov 22 11:41:46 gpib kernel: tnt4882: minor 0 read timed out > Nov 22 11:41:46 gpib kernel: tnt4882: read timed out > > Also, pyvisa often exits with: > > pyvisa.errors.VisaIOError: VI_ERROR_SYSTEM_ERROR (-1073807360): Unknown system error (miscellaneous error). > > and > > pyvisa.errors.VisaIOError: VI_ERROR_TMO (-1073807339): Timeout expired before operation completed. > > I haven't figured out yet why that is. Is it obvious what I am doing > wrong here? > > My instruments display things like 'Rmt Addr Err' and 'REM MTA'. Not > sure yet what these mean, but 'Err' definitely doesn't sound right. > > One of my goals is to be able to get screenshots off my scope. > The programming manual says: > > Example: > > 210 CLEAR 707 ! Clear interface buffers. > 220 OUTPUT 707;"PLOT" ! Starts plotter buffering. > 230 SEND 7;UNT UNL ! Clears bus, set ATN line at controller true. > 240 SEND 7;LISTEN 5 ! Tells plotter at address 5 to listen. > 250 SEND 7;TALK 7 ! Sets 54200A/D to talk mode. > 260 SEND 7;DATA ! Sets ATN line at controller to false > 270 ! so data can be transferred. > 280 WAIT 50 ! Wait 50 seconds for transfer to finish > 290 ! Note: If programming, use the SRQ capabilities > 300 ! of the 54200A/D to determine if the transfer > 310 ! is complete. Attempting to program the > 320 ! 54200A/D while making a hardcopy dump will > 330 ! cause errors. > > How would I go about receiving such a plot with pyvisa or linux-gpib > directly? Can it be done? A quick web search didn't provide insights. > > Thanks, > -Alex > > On Sun, Nov 22, 2020 at 05:19:58PM +0100, W wrote: >> Hi Alex >> >> I followed the same path as you and gave up with these NI-Visa drivers. Now >> I have something working with linux-gpib, pyvisa/pyvisa-py on an old PC >> (Pentium 4) >> >> A couple of days ago, I described my process to have this software >> installed. If you are interested, you can find it here <https://github.com/daturach/Documentation/wiki/GPIB:-Building-an-instrumentation-lab-with-python-libraries> >> >> Good luck >> >> Walter >> >> On 22.11.2020 12:18, Alexander Huemer wrote: >>> Hi >>> >>> That looks promising. I actually already had it installed but didn't >>> look at it yet. From the README I figure that it has linux-gpib as a >>> dependency. I'll have to look into it. >>> Thanks for the suggestion. >>> >>> -Alex >>> >>> On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote: >>>> Hi Alex, >>>> >>>> You may want to have a look at pyvisa-py. That seems to work nicely >>>> for me without having to install the NI-VISA drivers. >>>> >>>> Cheers, >>>> Roel >>>> >>>> -----Original Message----- >>>> From: Alexander Huemer <ale...@xx...> >>>> To: Linux GPIB general mailinglist < >>>> lin...@li...> >>>> Subject: [Linux-gpib-general] Compatibility layer for pyvisa? >>>> Date: Sun, 22 Nov 2020 08:57:29 +0000 >>>> >>>> Hi >>>> >>>> My understanding is this: >>>> * linux-gpib implements drivers for many GPIB interfaces and provides >>>> a >>>> userspace API on top of that, which is great. >>>> * pyvisa depends on vendor drivers like NI-VISA or the equivalent of >>>> other vendors. >>>> >>>> Is this correct? >>>> >>>> I tried to get NI-VISA working yesterday in order to be able to use >>>> pyvisa with a NI PCI board, on a distribution that they do not want to >>>> support, on a i686 box. I gave up after some hours, the configure >>>> script they have in there was written by drunk monkeys. >>>> >>>> So, here is my question: Did anybody consider to make the linux-gpib >>>> drivers available to pyvisa? >>>> >>>> -Alex >>>> >>>> [1] >>>> https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 >>>> >>>> >>>> _______________________________________________ >>>> Linux-gpib-general mailing list >>>> Lin...@li... >>>> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general >>>> >>> _______________________________________________ >>> Linux-gpib-general mailing list >>> Lin...@li... >>> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > >> _______________________________________________ >> Linux-gpib-general mailing list >> Lin...@li... >> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > > > _______________________________________________ > Linux-gpib-general mailing list > Lin...@li... > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general |
|
From: W <dat...@gm...> - 2020-11-23 14:10:37
|
Maybe you can use this tool (http://www.ke5fx.com/gpib/7470.htm) to make a screenshot of your display On 23.11.2020 00:26, Alexander Huemer wrote: > Things start to move here. > Your installation instructions were very useful, Walter, thank you! > I found that I had to add --enable-python-binding to ./configure and add > PYTHONPATH="/usr/local/lib/python3.7/site-packages/" to /etc/profile, > but eventually I got: > > GPIB INSTR: Available via Linux GPIB (b'4.3.3') > GPIB INTFC: Available via Linux GPIB (b'4.3.3') > > in `python3 -m visa info`. Yay! > > I then proceeded to play with `python -m visa shell` and visa_test.py > and managed to enable and disable the output of my power supply and > write fancy text to the display. > > There are situations in which i get error messages in the kernel ring > buffer like these though: > > Nov 22 11:53:43 gpib kernel: tnt4882: write bus error > > and > > Nov 22 11:41:46 gpib kernel: tnt4882: minor 0 read timed out > Nov 22 11:41:46 gpib kernel: tnt4882: read timed out > > Also, pyvisa often exits with: > > pyvisa.errors.VisaIOError: VI_ERROR_SYSTEM_ERROR (-1073807360): Unknown system error (miscellaneous error). > > and > > pyvisa.errors.VisaIOError: VI_ERROR_TMO (-1073807339): Timeout expired before operation completed. > > I haven't figured out yet why that is. Is it obvious what I am doing > wrong here? > > My instruments display things like 'Rmt Addr Err' and 'REM MTA'. Not > sure yet what these mean, but 'Err' definitely doesn't sound right. > > One of my goals is to be able to get screenshots off my scope. > The programming manual says: > > Example: > > 210 CLEAR 707 ! Clear interface buffers. > 220 OUTPUT 707;"PLOT" ! Starts plotter buffering. > 230 SEND 7;UNT UNL ! Clears bus, set ATN line at controller true. > 240 SEND 7;LISTEN 5 ! Tells plotter at address 5 to listen. > 250 SEND 7;TALK 7 ! Sets 54200A/D to talk mode. > 260 SEND 7;DATA ! Sets ATN line at controller to false > 270 ! so data can be transferred. > 280 WAIT 50 ! Wait 50 seconds for transfer to finish > 290 ! Note: If programming, use the SRQ capabilities > 300 ! of the 54200A/D to determine if the transfer > 310 ! is complete. Attempting to program the > 320 ! 54200A/D while making a hardcopy dump will > 330 ! cause errors. > > How would I go about receiving such a plot with pyvisa or linux-gpib > directly? Can it be done? A quick web search didn't provide insights. > > Thanks, > -Alex > > On Sun, Nov 22, 2020 at 05:19:58PM +0100, W wrote: >> Hi Alex >> >> I followed the same path as you and gave up with these NI-Visa drivers. Now >> I have something working with linux-gpib, pyvisa/pyvisa-py on an old PC >> (Pentium 4) >> >> A couple of days ago, I described my process to have this software >> installed. If you are interested, you can find it here <https://github.com/daturach/Documentation/wiki/GPIB:-Building-an-instrumentation-lab-with-python-libraries> >> >> Good luck >> >> Walter >> >> On 22.11.2020 12:18, Alexander Huemer wrote: >>> Hi >>> >>> That looks promising. I actually already had it installed but didn't >>> look at it yet. From the README I figure that it has linux-gpib as a >>> dependency. I'll have to look into it. >>> Thanks for the suggestion. >>> >>> -Alex >>> >>> On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote: >>>> Hi Alex, >>>> >>>> You may want to have a look at pyvisa-py. That seems to work nicely >>>> for me without having to install the NI-VISA drivers. >>>> >>>> Cheers, >>>> Roel >>>> >>>> -----Original Message----- >>>> From: Alexander Huemer <ale...@xx...> >>>> To: Linux GPIB general mailinglist < >>>> lin...@li...> >>>> Subject: [Linux-gpib-general] Compatibility layer for pyvisa? >>>> Date: Sun, 22 Nov 2020 08:57:29 +0000 >>>> >>>> Hi >>>> >>>> My understanding is this: >>>> * linux-gpib implements drivers for many GPIB interfaces and provides >>>> a >>>> userspace API on top of that, which is great. >>>> * pyvisa depends on vendor drivers like NI-VISA or the equivalent of >>>> other vendors. >>>> >>>> Is this correct? >>>> >>>> I tried to get NI-VISA working yesterday in order to be able to use >>>> pyvisa with a NI PCI board, on a distribution that they do not want to >>>> support, on a i686 box. I gave up after some hours, the configure >>>> script they have in there was written by drunk monkeys. >>>> >>>> So, here is my question: Did anybody consider to make the linux-gpib >>>> drivers available to pyvisa? >>>> >>>> -Alex >>>> >>>> [1] >>>> https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 >>>> >>>> >>>> _______________________________________________ >>>> Linux-gpib-general mailing list >>>> Lin...@li... >>>> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general >>>> >>> _______________________________________________ >>> Linux-gpib-general mailing list >>> Lin...@li... >>> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > >> _______________________________________________ >> Linux-gpib-general mailing list >> Lin...@li... >> https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > > > _______________________________________________ > Linux-gpib-general mailing list > Lin...@li... > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general |
|
From: Alexander H. <ale...@xx...> - 2020-11-24 14:00:34
|
Yes, I found that during research a few days ago too. I'd prefer something for Linux, ideally open source, but hey, it's better than nothing. I wonder how difficult it would be to write a plotter emulator from scratch in something like python. I think it would have to understand the commands with it's coordinates and paint that on a canvas of some sort. But that's a task for another day, when the basics are working. i reached out to the pyvisa-py developers for advise, they say the 'bus error' I see in the kernel ring buffer is an indication for a low level problem. Is there anything I can do with linux-gpib directly to debug this? -Alex On Mon, Nov 23, 2020 at 03:10:24PM +0100, W wrote: > Maybe you can use this tool (http://www.ke5fx.com/gpib/7470.htm) to make a > screenshot of your display > > On 23.11.2020 00:26, Alexander Huemer wrote: > > Things start to move here. > > Your installation instructions were very useful, Walter, thank you! > > I found that I had to add --enable-python-binding to ./configure and add > > PYTHONPATH="/usr/local/lib/python3.7/site-packages/" to /etc/profile, > > but eventually I got: > > > > GPIB INSTR: Available via Linux GPIB (b'4.3.3') > > GPIB INTFC: Available via Linux GPIB (b'4.3.3') > > > > in `python3 -m visa info`. Yay! > > > > I then proceeded to play with `python -m visa shell` and visa_test.py > > and managed to enable and disable the output of my power supply and > > write fancy text to the display. > > > > There are situations in which i get error messages in the kernel ring > > buffer like these though: > > > > Nov 22 11:53:43 gpib kernel: tnt4882: write bus error > > > > and > > > > Nov 22 11:41:46 gpib kernel: tnt4882: minor 0 read timed out > > Nov 22 11:41:46 gpib kernel: tnt4882: read timed out > > > > Also, pyvisa often exits with: > > > > pyvisa.errors.VisaIOError: VI_ERROR_SYSTEM_ERROR (-1073807360): Unknown system error (miscellaneous error). > > > > and > > > > pyvisa.errors.VisaIOError: VI_ERROR_TMO (-1073807339): Timeout expired before operation completed. > > > > I haven't figured out yet why that is. Is it obvious what I am doing > > wrong here? > > > > My instruments display things like 'Rmt Addr Err' and 'REM MTA'. Not > > sure yet what these mean, but 'Err' definitely doesn't sound right. > > > > One of my goals is to be able to get screenshots off my scope. > > The programming manual says: > > > > Example: > > > > 210 CLEAR 707 ! Clear interface buffers. > > 220 OUTPUT 707;"PLOT" ! Starts plotter buffering. > > 230 SEND 7;UNT UNL ! Clears bus, set ATN line at controller true. > > 240 SEND 7;LISTEN 5 ! Tells plotter at address 5 to listen. > > 250 SEND 7;TALK 7 ! Sets 54200A/D to talk mode. > > 260 SEND 7;DATA ! Sets ATN line at controller to false > > 270 ! so data can be transferred. > > 280 WAIT 50 ! Wait 50 seconds for transfer to finish > > 290 ! Note: If programming, use the SRQ capabilities > > 300 ! of the 54200A/D to determine if the transfer > > 310 ! is complete. Attempting to program the > > 320 ! 54200A/D while making a hardcopy dump will > > 330 ! cause errors. > > > > How would I go about receiving such a plot with pyvisa or linux-gpib > > directly? Can it be done? A quick web search didn't provide insights. > > > > Thanks, > > -Alex > > > > On Sun, Nov 22, 2020 at 05:19:58PM +0100, W wrote: > > > Hi Alex > > > > > > I followed the same path as you and gave up with these NI-Visa drivers. Now > > > I have something working with linux-gpib, pyvisa/pyvisa-py on an old PC > > > (Pentium 4) > > > > > > A couple of days ago, I described my process to have this software > > > installed. If you are interested, you can find it here <https://github.com/daturach/Documentation/wiki/GPIB:-Building-an-instrumentation-lab-with-python-libraries> > > > > > > Good luck > > > > > > Walter > > > > > > On 22.11.2020 12:18, Alexander Huemer wrote: > > > > Hi > > > > > > > > That looks promising. I actually already had it installed but didn't > > > > look at it yet. From the README I figure that it has linux-gpib as a > > > > dependency. I'll have to look into it. > > > > Thanks for the suggestion. > > > > > > > > -Alex > > > > > > > > On Sun, Nov 22, 2020 at 10:58:44AM +0100, Roel Jordans wrote: > > > > > Hi Alex, > > > > > > > > > > You may want to have a look at pyvisa-py. That seems to work nicely > > > > > for me without having to install the NI-VISA drivers. > > > > > > > > > > Cheers, > > > > > Roel > > > > > > > > > > -----Original Message----- > > > > > From: Alexander Huemer <ale...@xx...> > > > > > To: Linux GPIB general mailinglist < > > > > > lin...@li...> > > > > > Subject: [Linux-gpib-general] Compatibility layer for pyvisa? > > > > > Date: Sun, 22 Nov 2020 08:57:29 +0000 > > > > > > > > > > Hi > > > > > > > > > > My understanding is this: > > > > > * linux-gpib implements drivers for many GPIB interfaces and provides > > > > > a > > > > > userspace API on top of that, which is great. > > > > > * pyvisa depends on vendor drivers like NI-VISA or the equivalent of > > > > > other vendors. > > > > > > > > > > Is this correct? > > > > > > > > > > I tried to get NI-VISA working yesterday in order to be able to use > > > > > pyvisa with a NI PCI board, on a distribution that they do not want to > > > > > support, on a i686 box. I gave up after some hours, the configure > > > > > script they have in there was written by drunk monkeys. > > > > > > > > > > So, here is my question: Did anybody consider to make the linux-gpib > > > > > drivers available to pyvisa? > > > > > > > > > > -Alex > > > > > > > > > > [1] > > > > > https://www.ni.com/de-at/support/downloads/drivers/download.ni-kal.html#334223 > > > > > > > > > > > > > > > _______________________________________________ > > > > > Linux-gpib-general mailing list > > > > > Lin...@li... > > > > > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > > > > > > > > > _______________________________________________ > > > > Linux-gpib-general mailing list > > > > Lin...@li... > > > > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > > > > > _______________________________________________ > > > Linux-gpib-general mailing list > > > Lin...@li... > > > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > > > > > > _______________________________________________ > > Linux-gpib-general mailing list > > Lin...@li... > > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general > _______________________________________________ > Linux-gpib-general mailing list > Lin...@li... > https://lists.sourceforge.net/lists/listinfo/linux-gpib-general |
×
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.
Thanks for helping keep SourceForge clean.
X