Using uhd_fft with USRP N210

GNU Radio
1

Hi,

I’m trying to run uhd_fft with usrp N210, my machine run ubuntu desktop
12.04.4 LTS.

When I try to run uhd_fft which is located in
/usr/local/src/gnuradio-3.7.2.1/gr-uhd/apps directory, i’ve got the
following message:
root@openlab:/usr/local/src/gnuradio-3.7.2.1/gr-uhd/apps# ./uhd_fft
Traceback (most recent call last):
File “./uhd_fft”, line 23, in
from gnuradio import gr, gru
ImportError: No module named gnuradio

This is the message i’ve got when installing gnuradio with command:
cmake
-DENABLE_VOLK=FALSE …/
######################################################
– # Gnuradio enabled components
– ######################################################
– * python-support
– * testing-support

– ######################################################
– # Gnuradio disabled components
– ######################################################
– * volk
– * doxygen
– * sphinx
– * gnuradio-runtime
– * gr-ctrlport
– * gr-blocks
– * gnuradio-companion
– * gr-fec
– * gr-fft
– * gr-filter
– * gr-analog
– * gr-digital
– * gr-atsc
– * gr-audio
– * gr-comedi
– * gr-channels
– * gr-noaa
– * gr-pager
– * gr-qtgui
– * gr-trellis
– * gr-uhd
– * gr-utils
– * gr-video-sdl
– * gr-vocoder
– * gr-fcd
– * gr-wavelet
– * gr-wxgui

– Using install prefix: /usr/local
– Building for version: 3.7.2.1 / 3.7.2.1
– Configuring done
– Generating done
– Build files have been written to:
/usr/local/src/gnuradio-3.7.2.1/build

Can anyone help to solve this issue

Thanks,
sammy

2

Hi Sammy,
when building, basically everything was not built, so you don’t really
have GNU Radio installed.
This is usually due to missing a crucial dependency of GNU Radio.
How did you install?
I recommend using pyBOMBs, if you didn’t, because that should take care
of installing dependencies:
http://gnuradio.org/redmine/projects/pybombs/wiki/QuickStart

Greetings,
Marcus

3

Ah, missed that. You should not disable VOLK - almost all of GNU Radio
uses that by now.