You have to install gr-ettus which contains what's needed for compiling OOT
blocks and also installs rfnock blocks

Dario Pennisi

Il Lun 12 Feb 2024, 19:05 gaytanc4@gmail.com ha scritto:

On Mon, Feb 12, 2024 at 2:15 PM Dario Pennisi dario@iptronix.com wrote:

My recommendation is to not start here and to start with newer software.
Use the latest UHD and the latest GNU radio.

You're starting at a dead-end path if you continue with the versions you
currently have and require gr-ettus.

Brian

Thank you all very much. I am updating my work environment now!

On Mon, Feb 12, 2024, 11:21 AM Brian Padalino bpadalino@gmail.com wrote:

Do you recommend updating my Ubuntu to 22.04?

On Mon, Feb 12, 2024, 11:21 AM Brian Padalino bpadalino@gmail.com wrote:

On Mon, Feb 12, 2024 at 2:30 PM Chris gaytanc4@gmail.com wrote:

I use Ubuntu 22.04 and compile GNU Radio and UHD from source.  I typically
install it to a non-system directory (i.e. /opt or ~/opt) and add the PATH,
LD_LIBRARY_PATH, and PYTHONPATH in my environment.  This way I can have
different copies that never interfere with each other and I can easily
remove them without causing chaos.

Brian

Hi Brian,
The issue with not using gr-ettus is the lack of rfnocmodtool which is very
handy. Also, it is my understanding that unless you move to gnuradio 3.10
even with uhd4.6 you still need gr-ettus. Am I wrong?

Dario Pennisi

Il Lun 12 Feb 2024, 20:21 Brian Padalino bpadalino@gmail.com ha scritto:

On Mon, Feb 12, 2024 at 4:13 PM Dario Pennisi dario@iptronix.com wrote:

You're right that the rfnocmodtool is not available with the current
software, but you are mistaken that you need gr-ettus.  The RFNoC blocks
have been pulled into gr-uhd in GNU Radio:

https://github.com/gnuradio/gnuradio/tree/fe048a9874d2604d48d396d2b39925a0cf2c3c70/gr-uhd/grc

The alternative to the rfnocmodtool is to use this verilog generator code
which is described here:

https://kb.ettus.com/Getting_Started_with_RFNoC_in_UHD_4.0#Creating_Your_Own_RFNoC_Block

Specifically, you write the yml file which describes your block then you
invoke:

 $ python3 <repo>/host/utils/rfnoc_blocktool/rfnoc_create_verilog.py -c

~/rfnoc-demo/blocks/demo.yml -d ~/rfnoc-demo/fpga/rfnoc_block_demo

This sets up the shell and other interfaces as per their definition in the
block yml file.

Hope this helps.

Brian

Hi Brian,
thanks for the clarification, however, if i'm not mistaken, the commit you
mention is on main and that should be in gnuradio 3.10, whereas if you
stick with 3.8 that will still require gr-ettus, as also stated in
here: gr-ettus/README.md
at maint-3.8-uhd4.0 · EttusResearch/gr-ettus (github.com)
https://github.com/EttusResearch/gr-ettus/blob/maint-3.8-uhd4.0/README.md
also, the python script you mention is good but doesn't address completely
the OOT development flow as it still lacks all the block driver counterpart
(python/C) and the OOT tree skeleton which is quite conveniently created
with rfnocmodtool.
of course you could just copy the example tree and start modifying it
however to be honest i've spent some time trying to use gnuradio 3.10/UHD
4.x without gr-ettus and several things were not obvious especially due to
lack of updated documentation and btw i asked a few times what was the
expected way of handling this and have been told that rfnocmodtool was
going to be revamped and included in future versions:

[USRP-users] Re: rfnocmodtool (mail-archive.com)
https://www.mail-archive.com/usrp-users@lists.ettus.com/msg16935.html

rfnocmodtool - NI Community
https://forums.ni.com/t5/USRP-Software-Radio/rfnocmodtool/td-p/4349614

thanks,

Dario Pennisi

On Mon, Feb 12, 2024 at 10:22 PM Brian Padalino bpadalino@gmail.com wrote: