Re: Gnuradio 3.8 on a Raspberry pi 4 B?

[Glen Langston]

Thanks for your explanation.

ssh-ing in as root did work fine.

I find that the rtl_ programs do work, like rtl_fm.

I also understand your approach to embedded real-time applications.

This probably works particularly well for the PlutoSDR.   

My goal is for student use, where they are particularly graphical
user interface aware.

Best regards

Glen


> On May 29, 2020, at 1:57 AM, jean-michel.friedt@femto-st.fr wrote:
> 
> It is indeed my belief that there is no point in running a graphical user
> interface on an embedded system, much less a windowing system. If an embedded
> board is supposed to interact with a user, a Qt5 or SDL dedicated interface
> will be much lighter and efficient than a X-Window server and a window manager
> client.
> 
> This is the reason for providing the examples at the end of the tutorial
> where a Non GUI flowgraph is generated, the resulting Python script sent to 
> the embedded board and running there, possibly streaming the output (in my
> example 0-MQ) to a client. In the case of gr-acars, I just fetch periodically
> the log-file from the RPi4 to the host computer for analysis.
> 
> Nevertheless if you want to go in the windowing system direction, Buildroot
> seems to provide Xorg support: 
> 
> make menuconfig
> Target packages -> Graphic libraries and applications -> X.org X Window System
> 
> I have never used nor tested, so I have no idea how much space/how long it 
> takes
> to compile.
> 
> There is no binary package management system with buildroot: the whole point, 
> which
> makes is different from OpenEmbedded/Yocto, is to generate a custom minimal
> image with only the needed tools and not compile all possible binary packages
> (the disk size difference being about 10-fold, with about 8 GB needed for
> buildroot when my attempt at completing the OpenEmbedded system ended at about
> 80 GB and many unnecessary binary packages).
> 
> The default network configuration is to fetch the IP address from a DHCP 
> server.
> Otherwise add an etc/network/interfaces entry in the output/target directory
> of buildroot with the static IP configuration, and
> make
> to re-generate sdcard.img including this configuration file. Similarly if the
> usr/share/uhd/images binary files are needed: copy in output/target and make.
> 
> JM
> 
> --
> JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe,
> 25000 Besancon, France
> 
> May 29, 2020 3:33 AM, "Glen Langston" <glen.i.langston@gmail.com> wrote:
> 
>> Hi
>> 
>> Thanks for your help.
>> 
>> I’ve written the image to an SDCARD and the PI4 boots to
>> the command line prompt. The password is accepted and
>> I’ve looked around.
>> 
>> Gnuradio seems to be installed, but not the xwindow system.
>> 
>> How do you use gnuradio-companion etc?
>> 
>> I could not find “xstartup” or some such program.
>> 
>> Thanks
>> 
>> Glen
>> 
>>> On May 24, 2020, at 3:59 PM, jean-michel.friedt@femto-st.fr wrote:
>>> 
>>> I have uploaded http://jmfriedt.org/sdcard.img
>>> my Buildroot image generated for RPi4 that I have been
>>> using daily for the last 2 months, so pretty sure it is
>>> working. Actually it is 1.1 GB because of lapack needed
>>> for gnss-sdr but GNU Radio 3.8/Python3 will only require
>>> about 500 MB.
>>> Gwenhael Goavec-Merou ported all GNU Radio related software/libraries
>>> to Buildroot: the missing parts for gnss-sdr are found at
>>> https://github.com/oscimp/PlutoSDR in the for_next branch.
>>> 
>>> root passwd=root, no user account, USRP FPGA images to be added
>>> in usr/share/uhd/images manually if libuhd is needed. Tested with
>>> RTL-SDR DVB-T dongle, PlutoSDR (gr-iio) and B210.
>>> 
>>> JM
>>> 
>>> --
>>> JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe,
>>> 25000 Besancon, France
>>> 
>>> May 24, 2020 9:51 PM, "Glen I Langston" <glen.i.langston@gmail.com> wrote:
>>> 
>>>> Hello
>>>> 
>>>> I’ve been a great proponent of gnuradio, but I’m finding in
>>>> increasing difficult to do anything new, as installation of 3.8 is
>>>> essentially impossible for most people.
>>>> 
>>>> I’ve written and built my own python modules and C++ blocks.
>>>> 
>>>> However, despite months of trying now, I can not get 3.8 to install
>>>> on a raspberry pi.
>>>> 
>>>> Has anyone achieved 3.8 on a raspberry pi?
>>>> 
>>>> If so can you please save the entire OS, gzip compressed and put it
>>>> online somewhere. It will probably be about 3 GB compressed.
>>>> 
>>>> Thanks
>>>> 
>>>> Glen
>>>> 
>>>> Note that there are many many (too many) different guides on line
>>>> 
>>>> 1) apt-get
>>>> 
>>>> 2) pybombs
>>>> 
>>>> 3) git clone then build
>>>> 
>>>> each one fails in a different way.