USRP with GNU radio 3.8.2 on ubuntu 20.04 not working

[Bernd Schleicher]

Hi all,

 

I struggle in running my USRP B210 on Gnu Radio.

The USRP was running fine on a Windows installation (GR3.7). I recently switched to ubuntu 20.04 to be able to use the repositories and installed GR3.8.2 from PPA (using  the nice description from Christophe; posted on 2020-09-24).  

 

‘uhd_find_devices’ reports

[INFO] [UHD] linux; GNU C++ version 9.2.1 20200304; Boost_107100;

UHD_3.15.0.0-2build5

[INFO] [B200] Loading firmware image:

/usr/share/uhd/images/usrp_b200_fw.hex...

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

-- UHD Device 0

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

Device Address:

    serial: 8000036

    name: Zhixun-wireless_B210

    product: B210

    type: b200

 

 

And ‘uhd_fft -f 100M’ loads a window showing a spectrum.

But when I try to run GNURadio and want to insert a UHD: USRP Source Block, quite immediately a Crash Report launches. Trying to build the flowgraph anyway (using a USRP source and a simple QT GUI Sink) a build error is displayed:

 

Generate Error: (NameError("'len_tag_name' is not defined"),

'uhd.usrp_source(\n    ",".join((${dev_addr}, ${dev_args})),\n

uhd.stream_args(\n        cpu_format="${type}",\n        % if otw:\n

    otw_format="${otw}",\n        % endif\n        % if stream_args:\n

      args=${stream_args},\n        % endif\n        % if

eval(stream_chans):\n        channels=${stream_chans},\n        %

else:\n 

(.. message continues, but is cut here).

 

Anybody knows, what might be the problem?

Thanks, Bernd

 

 

 

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