Re: GNU Radio on Raspberry Pi 4?

[Glen Langston]

Dear Franco,

Thanks for your efforts,  I’ll try your version ASAP.

Best regards

Glen


> On Dec 17, 2020, at 8:33 PM, Franco VENTURI <fventuri@comcast.net> wrote:
> 
> Glen,
> if you are interested in using SDRplay API version 3.X (I think the latest 
> version of their API is 3.07), and you are on GNU Radio 3.7, you may want to 
> take a look at the gr-sdrplay GNU Radio OOT module I modified to work with 
> SDRplay API version 3.X: 
> https://github.com/fventuri/gr-sdrplay/tree/API3+RSPduo (notice the 
> non-default branch name: 'API3+RSPduo').
> 
> If instead you are on GNU Radio 3.9/master, I rewrote that OOT module from 
> scratch, called it 'gr-sdrplay3', and you'll find it here: 
> https://github.com/fventuri/gr-sdrplay3
> 
> Let me know if you have problems building or running those modules (possibly 
> by creating a new issue in GitHub to avoid hijacking this thread).
> 
> Franco
> 
> 
>> On 12/17/2020 1:34 PM Glen Langston <glen.i.langston@gmail.com> wrote:
>> 
>> 
>> Concerning Full Raspberry Pi OS software installed on a single Raspberry Pi 
>> image,
>> we’re encouraging high schools to use this installation document.
>> https://docs.google.com/document/d/1hfS7cRx3emlZz0sTs583zN8o-35nKtIej6BYMKCJLXY/edit?usp=sharing
>> 
>> The document includes the links to the OS and hardware to purchase.
>> 
>> Unfortunately this is a 3.7.13.4 Gnuradio release, as we’ve not had the 
>> strength
>> to get the SDRPlay software support working for newer gnuradio Releases.
>> 
>> Best regards, 
>> 
>> Glen
>> 
>>> On Dec 17, 2020, at 12:03 PM, Kyeong Su Shin <ksshin@postech.ac.kr> wrote:
>>> 
>>> To whom it may concern:
>>> 
>>> Just a tip: If you are building GNU Radio from the source, dependencies and 
>>> build procedures for Raspberry Pi is available at the GNU Radio Wiki. It 
>>> assumes that you are doing on-board compile.
>>> 
>>> See: https://wiki.gnuradio.org/index.php/InstallingGR#From_Source
>>> 
>>> 
>>> Regards,
>>> Kyeong Su Shin
>>> 보낸 사람: Albin Stigö <albin.stigo@gmail.com> 대신 Discuss-gnuradio 
>>> <discuss-gnuradio-bounces+ksshin=postech.ac.kr@gnu.org>
>>> 보낸 날짜: 2020년 12월 18일 금요일 오전 1:13
>>> 받는 사람: Kristoff <kristoff@skypro.be>; GNURadio Discussion List 
>>> <discuss-gnuradio@gnu.org>
>>> 제목: Re: GNU Radio on Raspberry Pi 4?
>>> 
>>> There's no special configuration. Just install dependencies and build from 
>>> source. Put root on SSD or it will be very slow. Ubuntu 65bit is fine. In 
>>> general GNURadio is hell to build and get dependencies right, but in the 
>>> end it works well.
>>> 
>>> --Albin
>>> 
>>> On Thu, Dec 17, 2020, 16:37 Kristoff <kristoff@skypro.be> wrote:
>>> Albin,
>>> 
>>> 
>>> Can you share your configuration for this? Do you need to set up 
>>> something special?
>>> Can you do this on standard ubuntu 64 bit (20.04LTS or 20.10) on a pi4b 
>>> or do you need another distro for this?
>>> 
>>> 
>>> I read somewhere opengl on the pi4 has not been released yes as it has 
>>> the pi4 has a more recent GPU.
>>> Or am I completely wrong?
>>> 
>>> 
>>> 73
>>> kristoff - ON1ARF
>>> 
>>> 
>>> On 17/12/2020 1:22 p.m., Albin Stigö wrote:
>>>> I suspect a lot of the graphics could run perfectly fine if they took 
>>>> advantage of the gpu better. A lot of the current rendering in 
>>>> GNURadio (and GQRX) is very cpu bound.
>>>> 
>>>> I had a spectrum and waterfall running easily at 60fps on a pi3 by 
>>>> using opengl properly. Using vulkan on pi4 the sky is the limit.
>>>> 
>>>> --Albin
>>>> 
>>>> On Thu, Dec 17, 2020, 13:18 Marcus Müller <mueller@kit.edu 
>>>> <mailto:mueller@kit.edu>> wrote:
>>>> 
>>>>    Can't stress this enough. Running a 32 bit Linux on a RPi 4 would be
>>>>    like running Windows 98 on a modern PC and expecting top performance
>>>>    from the CPU. You're not making use of the CPU you have, you're only
>>>>    making use of a legacy mode that it still supports.
>>>> 
>>>>    Best regards,
>>>>    Marcus
>>>> 
>>>>    On 17.12.20 10:53, Albin Stigö wrote:
>>>>> 64bit mode is most likely better because in addition to being
>>>>    64bit it
>>>>> enables additional cpu features (certain new instructions and
>>>>    more SIMD
>>>>> NEON registers)
>>>>> 
>>>>> On Thu, Dec 17, 2020, 10:36 jean-michel.friedt@femto-st.fr
>>>>    <mailto:jean-michel.friedt@femto-st.fr>
>>>>> <mailto:jean-michel.friedt@femto-st.fr
>>>>    <mailto:jean-michel.friedt@femto-st.fr>>
>>>>    <jean-michel.friedt@femto-st.fr
>>>>    <mailto:jean-michel.friedt@femto-st.fr>
>>>>> <mailto:jean-michel.friedt@femto-st.fr
>>>>    <mailto:jean-michel.friedt@femto-st.fr>>> wrote:
>>>>> 
>>>>>    The benchmark on volk/64 bit kernel v.s 32 bit Raspbian is at
>>>>> https://pubs.gnuradio.org/index.php/grcon/article/view/73/55
>>>>>    <https://pubs.gnuradio.org/index.php/grcon/article/view/73/55>
>>>>>    last page. I get 3 to 7-fold improvement by volk_config on a
>>>>    dedicated
>>>>>    toolchain for 64-bit CPU.
>>>>> 
>>>>>    JM
>>>>> 
>>>>>    --
>>>>>    JM Friedt, FEMTO-ST Time & Frequency, 26 rue de l'Epitaphe,
>>>>    25000
>>>>>    Besancon, France
>>>>> 
>>>>>    December 17, 2020 10:28 AM, "Kristoff" <kristoff@skypro.be
>>>>    <mailto:kristoff@skypro.be>
>>>>>    <mailto:kristoff@skypro.be <mailto:kristoff@skypro.be>>> wrote:
>>>>> 
>>>>>> HI all,
>>>>>> 
>>>>>> I also have a RPi4 (*).
>>>>>> Some follow-up question.
>>>>>> 
>>>>>> What OS would be the best for this?
>>>>>> Would running 64 bit make a difference?
>>>>>> 
>>>>>> I don't know to what degree this is related, but I did a
>>>>    test running
>>>>>> WebGL (**) on that pi, and I got about 1/3 of the frames per
>>>>>    second on
>>>>>> my RPi4 compared to my laptop (which only has a UHD
>>>>    Graphics 630
>>>>>    Mobile,
>>>>>> so not the  best or latest neither)
>>>>>> Is the GPU in the Pi4 good enough to run many GUI elements
>>>>    in GNU
>>>>>    Radio
>>>>>> at the same time?
>>>>>> 
>>>>>> Kr.
>>>>>> 
>>>>>> (*) RPi4B 8 GB, 120 SSD
>>>>>> 
>>>>>> (*) https://webglsamples.org <https://webglsamples.org>
>>>>>> 
>>>>>> On 16/12/2020 11:10 p.m., Dan Romanchik KB6NU wrote:
>>>>>> 
>>>>>>> Has anyone successfully run GNU Radio on a Pi 4? I
>>>>    recently purchased
>>>>>>> an RTL-SDR dongle and thought it would be fun to
>>>>    experiment a little
>>>>>>> with GNU Radio and learn something about SDR.
>>>>>>> 
>>>>>>> A couple of days ago, I fired up GNU Radio, and after
>>>>    having some
>>>>>>> trouble figuring out how to get the audio sink to talk to
>>>>    the Pi, I
>>>>>>> downloaded VE6EY's FM receiver flow graph. The flow graph
>>>>    runs, but
>>>>>>> the Pi 4 just doesn't seem to have enough horsepower to
>>>>    run it in
>>>>>    real
>>>>>>> time. The audio is slow and distorted.
>>>>>>> 
>>>>>>> Thinking that it might be the WX widgets slowing down the
>>>>    program, I
>>>>>>> first deleted the FFT display widgets, then converted the
>>>>    WX slider
>>>>>>> controls to QT range controls. Neither had any effect on
>>>>    how well the
>>>>>>> flow graph ran.
>>>>>>> 
>>>>>>> GQRX and CubicSDDR seem to work just fine. At least with
>>>>    both of
>>>>>    them,
>>>>>>> I'm able to receive FM broadcast and NOAA weather
>>>>    station. But, maybe
>>>>>>> the PI4 just doesn't have enough horsepower to run GNU
>>>>    Radio? If so,
>>>>>>> that's kind of disappointing.
>>>>>>> 
>>>>>>> 73! <—ham radio lingo for “best regards"
>>>>>>> 
>>>>>>> *Dan KB6NU*
>>>>>>> CW Geek, Ham Radio Instructor
>>>>>>> Author of the "No Nonsense" amateur radio license study
>>>>    guides
>>>>>>> Read my ham radio blog at http://www.kb6nu.com
>>>>    <http://www.kb6nu.com>
>>>>> 
>>>>