On 25/01/2023 22:25, Mike via USRP-users wrote:

All,

This is an update from a previous thread. I also found another error in the yaml file, ettus_rfnoc_graph.block.yml.  I’m running GNU Radio 3.8 and UHD 4.2.  The file is located in:

“gr-ettus/grc/ettus_rfnoc_graph.block.yml”. I found this because the commands in the “Device Args” parameter were not being processed correctly.

The line is associated with the following “if” statement (line 19):

  If dev_args_s:

     graph_args += f”,{clock_source_s}”

The “clock_source_s” should be “dev_args_s”.

I found this because I’m trying to send specific initialization commands to my N320.  As a side note, can anyone explain how to configure “subdev” from a GRC flow graph so that I can enable the RF1 side of the N320?

https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide#Subdevice_Specification_Mapping


Thanks,

Mike

*From:* Mike <mike...@verizon.net>
*Sent:* Friday, December 16, 2022 10:54 AM
*To:* 'Jim Palladino' <j...@gardettoengineering.com>; 'usrp-users@lists.ettus.com' <usrp-users@lists.ettus.com>
*Subject:* RE: [USRP-users] Re: Did anyone else need to do this?

Jim,

Thanks for taking care of this.  I’ll just fix it on my end and wait for the eventual updates in the repository.

Thanks,

Mike

*From:* Jim Palladino <j...@gardettoengineering.com>
*Sent:* Friday, December 16, 2022 10:04 AM
*To:* usrp-users@lists.ettus.com; Mike <mike...@verizon.net>
*Subject:* Re: [USRP-users] Re: Did anyone else need to do this?

Mike,

My last comment was related to gr-ettus (ettus_rfnoc_graph.block.yml), which I installed with gnuradio 3.8 / uhd 4.1. But I do see that gnuradio 3.10 has the exact same issue (as you found) in uhd_rfnoc_graph.block.yml:

https://github.com/gnuradio/gnuradio/blob/maint-3.10/gr-uhd/grc/uhd_rfnoc_graph.block.yml

<https://github.com/gnuradio/gnuradio/blob/maint-3.10/gr-uhd/grc/uhd_rfnoc_graph.block.yml>

        

gnuradio/uhd_rfnoc_graph.block.yml at maint-3.10 · gnuradio/gnuradio <https://github.com/gnuradio/gnuradio/blob/maint-3.10/gr-uhd/grc/uhd_rfnoc_graph.block.yml>

GNU Radio – the Free and Open Software Radio Ecosystem - gnuradio/uhd_rfnoc_graph.block.yml at maint-3.10 · gnuradio/gnuradio

github.com

So, it looks like we've run into the same issue in different implementations. I can post and issue on the gnuradio github page as well.

Jim

------------------------------------------------------------------------

*From:*Jim Palladino <j...@gardettoengineering.com>
*Sent:* Friday, December 16, 2022 9:38 AM
*To:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>; Mike <mike...@verizon.net>
*Subject:* [USRP-users] Re: Did anyone else need to do this?

Hi Mike,

Yes, I've run into that. I posted an issue last week here:
https://github.com/EttusResearch/gr-ettus/issues/69 <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_EttusResearch_gr-2Dettus_issues_69&d=DwMF-g&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=XUEEtUEfpaAEGxRI-WGuqHauOvsPdD2NZkfwDnwpYx0&m=8R8d8AptGNR6pvwu09qYQOqR4yaqR90_EK56v2z-xLM&s=xyYFrqtOxluB0Ad4jIxBJj7J_5ArRlIAu8Sx0l3QxaM&e=>

<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_EttusResearch_gr-2Dettus_issues_69&d=DwMF-g&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=XUEEtUEfpaAEGxRI-WGuqHauOvsPdD2NZkfwDnwpYx0&m=8R8d8AptGNR6pvwu09qYQOqR4yaqR90_EK56v2z-xLM&s=xyYFrqtOxluB0Ad4jIxBJj7J_5ArRlIAu8Sx0l3QxaM&e=>

        

syntax error in ettus_rfnoc_graph.block.yml · Issue #69 · EttusResearch/gr-ettus <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_EttusResearch_gr-2Dettus_issues_69&d=DwMF-g&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=XUEEtUEfpaAEGxRI-WGuqHauOvsPdD2NZkfwDnwpYx0&m=8R8d8AptGNR6pvwu09qYQOqR4yaqR90_EK56v2z-xLM&s=xyYFrqtOxluB0Ad4jIxBJj7J_5ArRlIAu8Sx0l3QxaM&e=>

Line 25 of ettus_rfnoc_graph.block.yml in the maint-3.8-uhd4.0 branch (and possibly others) looks like: self.rfnoc_graph = ${id} = ettus.rfnoc_graph(uhd.device_addr(&quot;${graph_args}&quot;))) You...

github.com

I ended up just modifying the yml file in source and then reinstalling gr-ettus.

Jim

------------------------------------------------------------------------

*From:*Mike via USRP-users <usrp-users@lists.ettus.com>
*Sent:* Friday, December 16, 2022 9:33 AM
*To:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>
*Subject:* [USRP-users] Did anyone else need to do this?

Hi all,

This goes in the category of “Did anyone else need to do this?”.

I’m running Ubuntu 20.04.5 LTS with GNURadio 3.8 (Maint) and UHD 4.0.  I recently upgraded UHD to 4.2.  I ran into a gnuradio issue starting a “RFNoC” flow graph with a syntax error for an unmatched ‘)’:

Self.rfnoc_graph=ettus_rfnoc_graph_0 = ettus.rfnoc_graph(uhd.device_addr(“addr=xxx,type-n3xx”)))

I was able to manually edit the generated python code to remove one of the parentheses and see the code work.

I then upgraded gnuradio to 3.10 which had the same issue.

I then compared the “uhd_rfnoc_graph.block.yml” block files between UHD4.0 and 4.2.  It’s significantly different as 4.0 uses python .join to build the argument list and UHD 4.2 uses the python module “ast” to generate the argument list. But the final line on the 4.2 version had the syntax error of the extra ‘)’:

              self.rfnoc_graph = ${id} = uhd.rfnoc_graph(uhd.device_addr(“${graph_args}”)))

I removed one ‘)’ then reinstalled gnuradio (make install) from the build directory and everything seemed to work after that.

So, it seems like it is a simple syntax error.  But normally something like this (in my experience) indicates that I might have missed some configuration step somewhere and have yet to see the other errors.

So, has anyone seen something like this?

Thanks,

Mike


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