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Re: [Discuss-gnuradio] Correct GRC version for UHD

From: Dave NotTelling
Subject: Re: [Discuss-gnuradio] Correct GRC version for UHD
Date: Sun, 23 Sep 2018 20:35:49 -0400


     The issue you are having is that the version of the firmware on your radio does not match the version of the UHD libraries that you have on your system.  You need to either update your radios (uhd_image_loader) or change your version of UHD to match what the radio has.  The former is the better choice in my opinion.

     I think that you need to add `--init-only` to the uhd_usrp_probe command to tell if the versions line up.  I seem to recall not getting the version error without it.

     For the instructions on how to compile UHD from source: https://files.ettus.com/manual/page_build_guide.html

     Also, for GNU Radio: https://wiki.gnuradio.org/index.php/UbuntuInstall

     You likely don't need to install from source.  As far as I know gr-uhd just makes use of the system UHD install.  Perhaps you have two different locations that UHD is installed to?  You could double check that you don't have libuhd.so in /usr/local/lib and /usr/lib at the same time.  I'd suggest updating the radios to the current firmware with uhd_image_loader, power cycling them, and then trying again.

Good luck!


On Thu, Sep 20, 2018 at 5:36 PM John_w_g <address@hidden> wrote:
I am using Ubuntu 18.04 and the only listed GRC version in the ppa is version

I have an Ettus x310 and have downloaded the correct FPGA image and verified correct operation with uhd_usrp_probe.

I have GRC 3.7.11 installed and when I attempt to access the x310, I get an incompatible FPGA version.

First question is what is the correct GRC version to work with this UHD version?

Second question as a relatively new Linux user, I really don't want to compile source code. If that is necessary, where should I look for a detailed description of the correct process.

John G

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