Re: usrp_probe fails with AttributeError: 'Param' object has no attribute 'get_input'

GNU Radio
1

can you post the warnings? and what version of gnuradio?

Sorry - I meant to include that. I’m using Version 3.3.1
(v3.3.1git-30-g278b6db3).

There are many multiples of these; this is a sample of the last five. I
get the exact same warning with grc, but that runs fine.

Warning: Block with key “wxgui_histosink2” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/wxgui_histosink2.xml
Warning: Block with key “wxgui_numbersink2” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/wxgui_numbersink2.xml
Warning: Block with key “wxgui_scopesink2” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/wxgui_scopesink2.xml
Warning: Block with key “wxgui_waterfallsink2” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/wxgui_waterfallsink2.xml
Warning: Block with key “xmlrpc_client” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/xmlrpc_client.xml
Warning: Block with key “xmlrpc_server” already exists.
Ignoring: /usr/share/gnuradio/grc/blocks/xmlrpc_server.xml

2

It looks like you have a case of multiple gnuradio installs. Not sure
what else would cause this. And that would also explain the issue you
have, possibly a version mismatch between the installed script and the
library code.

I would clean all traces of gnuradio from /usr and /usr/local, uninstall
any deb packages for gnuradio you might have installed. Then install
exactly the version you want.

-Josh

3

Hi Josh,

On calling 'usrp2_probe’I am getting the exact same error as Jacinda. I
am
working with the USRP2 kit for the first time . On calling usrp2_fft.py
a GUI is
opened but nothing is displayed in it . Also , in the terminal window an
error
message is displayed saying
usrp2: channel 0 not recieving
usrp2:: rx_samples() failed
I have installed only 1 version of gnuradio (gnuradio3.3.0) from their
FTP .
Kindly help.

Himanshu