[USRP-users] Re: OFDM Reciever chain on USRPx310

[Martin Braun]

On Thu, Mar 6, 2025 at 8:07 PM Quentin Prieels <
quentin.prie...@student.uclouvain.be> wrote:

> Hello Cédric, Hello everyone
>
> Thanks for your replies.  I will try to use or be inspired by those
> blocks.
>
> I have a slightly more specific question on this subject. Do you know how
> to integrate the codes in the fpga/usrp3/lib/blocks/rnfoc folder into a new
> OOT block/module? Do you instantiate them in the same way as the ‘mult_rc’
> IP (the one in the "HDL_IP" parameter) in the example of the gain module?
> To structure the code, is it possible to define how to move this code
> within the OOT block?
>

You can reference them in your custom Verilog simply by module name. In
your OOT module, make sure to reference them in the Makefile.srcs. You
might have to add an include line to your RFNoC block's Makefile.

--M


> Thanks for your help, I appreciate.
>
> Quentin
> On 6/03/25 16:53, Cédric Hannotier wrote:
>
> [Vous ne recevez pas souvent de courriers de cedric.hannot...@ulb.be. 
> Découvrez pourquoi ceci est important à 
> https://aka.ms/LearnAboutSenderIdentification ]
>
> On 2025-03-06 15:19 +0100, Quentin Prieels wrote:
> Hello Quentin,
>
> On 2025-03-06 15:19 +0100, Quentin Prieels wrote:
>
> As part of a research project, I'm looking to implement an OFDM receiver on
> the FPGA of a USRPx310 (and more specifically, the synchronisation stage).
> According to my research, some RFNoC blocks with this function already
> perform this function. Where can I find them?
>
> AFAIR, there are some RFNoC blocks in a branch over the old FPGA 
> repo:https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FEttusResearch%2Ffpga%2Ftree%2Frfnoc-ofdm&data=05%7C02%7Cquentin.prieels%40student.uclouvain.be%7C3ae893fb4a284ca44e9f08dd5cc714ca%7C7ab090d4fa2e4ecfbc7c4127b4d582ec%7C1%7C0%7C638768732336272267%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=daAwbNquMCdD0qG2gSu73Zv9XjU8OF03P4YAY%2BncKVw%3D&reserved=0
>  
> for 
> example:https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FEttusResearch%2Ffpga%2Fblob%2Frfnoc-ofdm%2Fusrp3%2Flib%2Frfnoc%2Fofdm_peak_detector.v&data=05%7C02%7Cquentin.prieels%40student.uclouvain.be%7C3ae893fb4a284ca44e9f08dd5cc714ca%7C7ab090d4fa2e4ecfbc7c4127b4d582ec%7C1%7C0%7C638768732336299309%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=XnKpXNpmd9RTNmyF%2FFewBEL8MpL32bbe%2B1S1aUtyr%2Bo%3D&reserved=0
>  
> 
> Apart from Schmidl&Cox, I don't see anything merged into the default branch.
>
> Never used them. Don't know how accurate they are.
> Note that they are 7-8 years old...
>
> Best
> --
>
> Cédric Hannotier
>
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[USRP-users] Re: N210 not accepting uhd commands, but I can ping it.

[Martin Braun]

You can run Wireshark on the interface and listen to ARP responses. You can
also go to safe mode:
https://kb.ettus.com/N200/N210_Device_Recovery#Safe_Mode

Your ping might be pinging something else with the same address.

--M

On Mon, Mar 10, 2025 at 4:32 AM Arnaldo Sans via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Hello Marcus,
>
> I am going off of a sheet of paper that was laminated on the lid of the
> USRP. I am thinking someone must have changed the address and the net
> mask.  BTW I did try the out-the-box address and mask... (192.168.10.2 and
> 255.255.255.0) -- unfortunately it dd not help.  Also, full disclosure I am
> trying a MIMO set-up; however, at the moment I am just working with a
> single radio.  Is there a way of interrogating the radio... to confirm the
> address and mask?
>
> Thanks again... for all your help.  I am looking forward to any additional
> suggestions.
>
> Regards,
> AJ
>
> --
> *From:* Marcus D. Leech 
> *Sent:* Tuesday, March 4, 2025 3:59 PM
> *To:* Arnaldo Sans ; usrp-users@lists.ettus.com <
> usrp-users@lists.ettus.com>
> *Subject:* Re: [USRP-users] Re: N210 not accepting uhd commands, but I
> can ping it.
>
> On 04/03/2025 15:56, Arnaldo Sans wrote:
>
> I am ping the USRP's address 192.168.10.3 with mask 255.255.255.255
>
> Regards,
> AJ
>
> That's an unusual address for a "stock" N210.  Normally, they're at
> 192.168.10.2.  Do you have a dedicated connection to
>   the USRP N210?
>
> Also, the netmask on your machine would normally be 255.255.255.0
>
>
>
> --
> *From:* Marcus D. Leech 
> 
> *Sent:* Tuesday, March 4, 2025 12:32 PM
> *To:* usrp-users@lists.ettus.com 
> 
> *Subject:* [USRP-users] Re: N210 not accepting uhd commands, but I can
> ping it.
>
>
> *Note: This message originated from outside the FIU Faculty/Staff email
> system.*
>
> On 04/03/2025 11:36, Arnaldo Sans wrote:
>
> Hello,
>
> Hope everyone is well.  I am having trouble communicating with my N210.  I
> hope some can offer some ideas.  Here are the details...
>
> USRP: N210
> OS: Ubuntu 23.04, Codename lunar
> Computer: HP FireFly,
> Connectivity:
> opt1:  Thunderbolt port + Sonnet Tech 10GSF
> opt2:  Thunderbolt port to RJ45
>
> I can ping the unit However, when I try the uhd_usrp_probe and
> uhd_find_devices commands... I get the following — not very promising...
>
>
> $ uhd_usrp_probe
> [INFO] [UHD] linux; GNU C++ version 12.3.0; Boost_107400;
> UHD_4.6.0.HEAD-0-g50fa3baa
> Error: LookupError: KeyError: No devices found for ->
> Empty Device Address
>
> $ uhd_find_devices
> [INFO] [UHD] linux; GNU C++ version 12.3.0; Boost_107400;
> UHD_4.6.0.HEAD-0-g50fa3baa
> No UHD Devices Found
>
> Thank you in advance for your help
>
> *Regards,*
>
>
> *AJ Sans*
>
> *Grad**uate Researcher*
>
> *College of Electrical & **Computing** Engineering *
>
> *Florida International University*
>
> *10555 West Flagler Street*
>
> *Room 3863B*
>
> *Miami, FL 33174*
> *Phone: 305-336-2541 | Email:* *asans...@fiu.edu *
>
>
>
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>
> What address are you pinging it at?
>
>
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