Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[West, Nathan]

On Mon, Apr 18, 2016 at 3:27 AM, Douglas Geiger <
doug.gei...@bioradiation.net> wrote:

> I know I'm a little late to this party, but I thought I'd point this out:
> the output "VOLK: Error allocating memory (posix_memalign: 22)" suggests
> you are running into this known issue:
> http://gnuradio.org/redmine/issues/692
>
> If this is indeed a rPi Rev B, then this is the known/old issue of
> volk_get_alignment() returning a value on 1 on that arch, which then breaks
> posix_memalign. I believe this has been fixed in more recent releases, so
> perhaps jessie-backports can help you there?
>

Indeed.
https://github.com/gnuradio/volk/commit/cc1abd2ea27c7f303efaa6466e97970915ed
has been in VOLK since before v1.0


>
>  Good luck,
>   Doug
>
> On Wed, Apr 13, 2016 at 4:45 AM, Rob Roschewsk  wrote:
>
>> Marcus,
>>
>> Thanks for responding.
>>
>> I'm looking to build a headless FM receiver to record and stream public
>> service communication (fire, police, etc.). We will stream as many channels
>> as possible that fall into a given passband.
>>
>> I already have a system running on a PC and now would like to port it to
>> the PI.
>>
>> I understand it maybe an "up hill" path, but the thought is to deploy
>> multiple inexpensive units around a geographic area all feeding a central
>> streaming server.
>>
>> The Pi is running Raspian Jesse  I started with the distribution
>> packages but ran into problems right out of the blocks and thought it would
>> be best to use the latest code before asking questions :)
>>
>> I understand cross compiling is the way to go.
>>
>> Since I brought it up, here was the error I saw when I tried to run the
>> script that runs on the PC but fails spectacularly on the raspberry pi with
>> the precompiled packages 
>>
>> roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml
>> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0
>> <0030070030>-unknown
>>
>> high=16250 low=16240 span=10
>> center=16245
>> gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
>> built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf
>> bladerf rfspace airspy
>> Using device #0 Realtek RTL2838UHIDIR SN: 0108
>> Found Elonics E4000 tuner
>> Exact sample rate is: 100.026491 Hz
>> Using Volk machine: generic_orc
>> VOLK: Error allocating memory (posix_memalign: 22)
>> VOLK: Error allocating memory (posix_memalign: 22)
>> VOLK: Error allocating memory (posix_memalign: 22)
>> Segmentation fault
>>
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>>
>>
>
>
> --
> Doug Geiger
> doug.gei...@bioradiation.net
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Douglas Geiger]

I know I'm a little late to this party, but I thought I'd point this out:
the output "VOLK: Error allocating memory (posix_memalign: 22)" suggests
you are running into this known issue:
http://gnuradio.org/redmine/issues/692

If this is indeed a rPi Rev B, then this is the known/old issue of
volk_get_alignment() returning a value on 1 on that arch, which then breaks
posix_memalign. I believe this has been fixed in more recent releases, so
perhaps jessie-backports can help you there?

 Good luck,
  Doug

On Wed, Apr 13, 2016 at 4:45 AM, Rob Roschewsk  wrote:

> Marcus,
>
> Thanks for responding.
>
> I'm looking to build a headless FM receiver to record and stream public
> service communication (fire, police, etc.). We will stream as many channels
> as possible that fall into a given passband.
>
> I already have a system running on a PC and now would like to port it to
> the PI.
>
> I understand it maybe an "up hill" path, but the thought is to deploy
> multiple inexpensive units around a geographic area all feeding a central
> streaming server.
>
> The Pi is running Raspian Jesse  I started with the distribution
> packages but ran into problems right out of the blocks and thought it would
> be best to use the latest code before asking questions :)
>
> I understand cross compiling is the way to go.
>
> Since I brought it up, here was the error I saw when I tried to run the
> script that runs on the PC but fails spectacularly on the raspberry pi with
> the precompiled packages 
>
> roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml
> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0 <0030070030>
> -unknown
>
> high=16250 low=16240 span=10
> center=16245
> gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
> built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf
> bladerf rfspace airspy
> Using device #0 Realtek RTL2838UHIDIR SN: 0108
> Found Elonics E4000 tuner
> Exact sample rate is: 100.026491 Hz
> Using Volk machine: generic_orc
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> Segmentation fault
>
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>
>


-- 
Doug Geiger
doug.gei...@bioradiation.net
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[sreeraj r]

Hi Rob,

IMO the easiest way to setup GNURadio on Rpi is to use Archlinux [1]. You
could find platform specific installation instructions on the website
itself.  Rpi-1 is underpowered and make sure that you are not running any
GUIs while running a flowgraph. Create your flowgraphs on a local machine
and  run the generated python file on Pi (if you are using Pi-1).
Performance results for some simple tests on Pi-1 and 2 with RTLSDRs  are
given below (GPU FFT not enabled on both, works without any overflows).

Rpi-1 : 2MS/s, 512pt FFT with a block decimation of 16 (with UDP streaming
to local PC)
Rpi-2 : 2MS/s, 512pt FFT, bounded by USB throughput (with UDP streaming to
local PC)

[1] https://archlinuxarm.org/

Best regards
Sreeraj Rajendran

On Fri, Apr 15, 2016 at 4:21 PM, Rob Roschewsk  wrote:

> Thanks for all the good feedback folks!
>
> I think I'm going to stick to the precompiled packages in the repo for the
> short term . so I'll probably be back with more questions soon :)
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Rob Roschewsk]

Thanks for all the good feedback folks!

I think I'm going to stick to the precompiled packages in the repo for the
short term . so I'll probably be back with more questions soon :)
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Tom Rondeau]

On Wed, Apr 13, 2016 at 11:13 PM, Marcus D. Leech  wrote:

> On 04/13/2016 11:05 PM, Jean Luc wrote:
>
> I've been trying as well to use GR on RPi (model 3), the ultimate purpose
> would be radio astronomy. A smaller form factor such as RPI's makes a
> remote installation more palatable than a full PC.
>
> I wasn't able to compile it on RPi but compromised on using a more recent
> version (3.7.9-3~bpo8+1) taken from jessie-backports. The steps are below.
>
> sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys
> 8B48AD6246925553 7638D0442B90D010
>
> sudo vi /etc/apt/sources.list and  add the following line:
> deb http://ftp.debian.org/debian jessie-backports main
>
> sudo apt-get update
> sudo apt-get -t jessie-backports install gnuradio
>
>
>
> On the positive side, GR works on RPi3. However, it does keep one core to
> 100% in many cases. This was with input from an SDR with the 2Msps rate,
> though. Actually, one more problem: audio output. That part didn't work
> ("check topology failed on audio_alsa_sink"); I posted a message on the
> list the other day. I cannot say it's a GR problem, could be mine; I have
> yet to understand what the problem is.
>
> JL.
>
> I'll point out that ARCH generally has up-to-date packages for this stuff,
> including for most of the ARM-based SBCs.
>
> I run ARCH on various Odroid platforms, running radio-astronomy GR
> flow-graphs, with good success.  I run these "headless", without any
>   graphical display from the Odroid--it's just the digital radio +
> processing platform.
>


We also keep information about our support and capabilities on embedded
systems here:

http://gnuradio.org/redmine/projects/gnuradio/wiki/Embedded

Also for Android if you're running that on your embedded machine:

http://gnuradio.org/redmine/projects/gnuradio/wiki/Android


We don't have much posted on using RPis because, until recently, they were
not an exciting platform for us. The initial RPi was so woefully
underpowered as a processor that most of us trying to do actual math went
with other solutions, like the Odroid that Marcus mentioned. With the RPi2
and RPi3, they now have interesting processors where GNU Radio makes a lot
more sense.

Tom



> On Wed, Apr 13, 2016 at 7:45 AM, Rob Roschewsk  wrote:
>
>> Marcus,
>>
>> Thanks for responding.
>>
>> I'm looking to build a headless FM receiver to record and stream public
>> service communication (fire, police, etc.). We will stream as many channels
>> as possible that fall into a given passband.
>>
>> I already have a system running on a PC and now would like to port it to
>> the PI.
>>
>> I understand it maybe an "up hill" path, but the thought is to deploy
>> multiple inexpensive units around a geographic area all feeding a central
>> streaming server.
>>
>> The Pi is running Raspian Jesse  I started with the distribution
>> packages but ran into problems right out of the blocks and thought it would
>> be best to use the latest code before asking questions :)
>>
>> I understand cross compiling is the way to go.
>>
>> Since I brought it up, here was the error I saw when I tried to run the
>> script that runs on the PC but fails spectacularly on the raspberry pi with
>> the precompiled packages 
>>
>> roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml
>> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0
>> <0030070030>-unknown
>>
>> high=16250 low=16240 span=10
>> center=16245
>> gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
>> built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf
>> bladerf rfspace airspy
>> Using device #0 Realtek RTL2838UHIDIR SN: 0108
>> Found Elonics E4000 tuner
>> Exact sample rate is: 100.026491 Hz
>> Using Volk machine: generic_orc
>> VOLK: Error allocating memory (posix_memalign: 22)
>> VOLK: Error allocating memory (posix_memalign: 22)
>> VOLK: Error allocating memory (posix_memalign: 22)
>> Segmentation fault
>>
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Marcus Müller]

Hi Rob,

first feeling: make sure you've actually got enough RAM on your Pi; the
"VOLK: Error allocating memory" errors are kind of unusual.

Best regards,
Marcus

On 13.04.2016 13:45, Rob Roschewsk wrote:
>
> Marcus,
>
> Thanks for responding.
>
> I'm looking to build a headless FM receiver to record and stream
> public service communication (fire, police, etc.). We will stream as
> many channels as possible that fall into a given passband.
>
> I already have a system running on a PC and now would like to port it
> to the PI.
>
> I understand it maybe an "up hill" path, but the thought is to deploy
> multiple inexpensive units around a geographic area all feeding a
> central streaming server.
>
> The Pi is running Raspian Jesse  I started with the distribution
> packages but ran into problems right out of the blocks and thought it
> would be best to use the latest code before asking questions :)
>
> I understand cross compiling is the way to go.
>
> Since I brought it up, here was the error I saw when I tried to run
> the script that runs on the PC but fails spectacularly on the
> raspberry pi with the precompiled packages 
>
> roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py
>  -s 49 noaa.xml
> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0
> -unknown
>
> high=16250 low=16240 span=10
> center=16245
> gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
> built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf
> bladerf rfspace airspy
> Using device #0 Realtek RTL2838UHIDIR SN: 0108
> Found Elonics E4000 tuner
> Exact sample rate is: 100 .026491 Hz
> Using Volk machine: generic_orc
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> Segmentation fault
>
>
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Anon Lister]

Have you seen [1]? it looks like he hit all the same issues I did when
building on a pi3(raspberrian, not Debian but you might run into some of
the same). The newer 3, as long as you give it some swap space can get the
compile done in only a few hours with a make -j 3 or 4.

http://lukeberndt.com/2016/compiling-gnuradio-on-a-raspberry-pi/
On Apr 12, 2016 10:25 PM, "Rob Roschewsk"  wrote:

> Hi all,
>
> I'd like to compile GR from source for a raspberry pi (arm) ... I know
> there are some flags that need to be passed to cmake but I can't find a
> complete list ... or at least a consistent list
>
> Is there a reference I could use???
>
> Thanks!
>
> --> Rob, KA2PBT
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Marcus D. Leech]

On 04/13/2016 11:05 PM, Jean Luc wrote:
I've been trying as well to use GR on RPi (model 3), the ultimate 
purpose would be radio astronomy. A smaller form factor such as RPI's 
makes a remote installation more palatable than a full PC.


I wasn't able to compile it on RPi but compromised on using a more 
recent version (3.7.9-3~bpo8+1) taken from jessie-backports. The steps 
are below.


sudo apt-key adv --keyserver keyserver.ubuntu.com
 --recv-keys 8B48AD6246925553
7638D0442B90D010

sudo vi /etc/apt/sources.list and  add the following line:
deb http://ftp.debian.org/debian jessie-backports main

sudo apt-get update
sudo apt-get -t jessie-backports install gnuradio



On the positive side, GR works on RPi3. However, it does keep one core 
to 100% in many cases. This was with input from an SDR with the 2Msps 
rate, though. Actually, one more problem: audio output. That part 
didn't work ("check topology failed on audio_alsa_sink"); I posted a 
message on the list the other day. I cannot say it's a GR problem, 
could be mine; I have yet to understand what the problem is.


JL.
I'll point out that ARCH generally has up-to-date packages for this 
stuff, including for most of the ARM-based SBCs.


I run ARCH on various Odroid platforms, running radio-astronomy GR 
flow-graphs, with good success.  I run these "headless", without any
  graphical display from the Odroid--it's just the digital radio + 
processing platform.





On Wed, Apr 13, 2016 at 7:45 AM, Rob Roschewsk > wrote:


Marcus,

Thanks for responding.

I'm looking to build a headless FM receiver to record and stream
public service communication (fire, police, etc.). We will stream
as many channels as possible that fall into a given passband.

I already have a system running on a PC and now would like to port
it to the PI.

I understand it maybe an "up hill" path, but the thought is to
deploy multiple inexpensive units around a geographic area all
feeding a central streaming server.

The Pi is running Raspian Jesse  I started with the
distribution packages but ran into problems right out of the
blocks and thought it would be best to use the latest code before
asking questions :)

I understand cross compiling is the way to go.

Since I brought it up, here was the error I saw when I tried to
run the script that runs on the PC but fails spectacularly on the
raspberry pi with the precompiled packages 

roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py
 -s 49 noaa.xml
linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0
-unknown

high=16250 low=16240 span=10
center=16245
gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri
hackrf bladerf rfspace airspy
Using device #0 Realtek RTL2838UHIDIR SN: 0108
Found Elonics E4000 tuner
Exact sample rate is: 100 .026491 Hz
Using Volk machine: generic_orc
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault



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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Jean Luc]

I've been trying as well to use GR on RPi (model 3), the ultimate purpose
would be radio astronomy. A smaller form factor such as RPI's makes a
remote installation more palatable than a full PC.

I wasn't able to compile it on RPi but compromised on using a more recent
version (3.7.9-3~bpo8+1) taken from jessie-backports. The steps are below.

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys
8B48AD6246925553 7638D0442B90D010

sudo vi /etc/apt/sources.list and  add the following line:
deb http://ftp.debian.org/debian jessie-backports main

sudo apt-get update
sudo apt-get -t jessie-backports install gnuradio



On the positive side, GR works on RPi3. However, it does keep one core to
100% in many cases. This was with input from an SDR with the 2Msps rate,
though. Actually, one more problem: audio output. That part didn't work
("check topology failed on audio_alsa_sink"); I posted a message on the
list the other day. I cannot say it's a GR problem, could be mine; I have
yet to understand what the problem is.

JL.

On Wed, Apr 13, 2016 at 7:45 AM, Rob Roschewsk  wrote:

> Marcus,
>
> Thanks for responding.
>
> I'm looking to build a headless FM receiver to record and stream public
> service communication (fire, police, etc.). We will stream as many channels
> as possible that fall into a given passband.
>
> I already have a system running on a PC and now would like to port it to
> the PI.
>
> I understand it maybe an "up hill" path, but the thought is to deploy
> multiple inexpensive units around a geographic area all feeding a central
> streaming server.
>
> The Pi is running Raspian Jesse  I started with the distribution
> packages but ran into problems right out of the blocks and thought it would
> be best to use the latest code before asking questions :)
>
> I understand cross compiling is the way to go.
>
> Since I brought it up, here was the error I saw when I tried to run the
> script that runs on the PC but fails spectacularly on the raspberry pi with
> the precompiled packages 
>
> roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml
> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0 <0030070030>
> -unknown
>
> high=16250 low=16240 span=10
> center=16245
> gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
> built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf
> bladerf rfspace airspy
> Using device #0 Realtek RTL2838UHIDIR SN: 0108
> Found Elonics E4000 tuner
> Exact sample rate is: 100.026491 Hz
> Using Volk machine: generic_orc
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> VOLK: Error allocating memory (posix_memalign: 22)
> Segmentation fault
>
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Rob Roschewsk]

Marcus,

Thanks for responding.

I'm looking to build a headless FM receiver to record and stream public
service communication (fire, police, etc.). We will stream as many channels
as possible that fall into a given passband.

I already have a system running on a PC and now would like to port it to
the PI.

I understand it maybe an "up hill" path, but the thought is to deploy
multiple inexpensive units around a geographic area all feeding a central
streaming server.

The Pi is running Raspian Jesse  I started with the distribution
packages but ran into problems right out of the blocks and thought it would
be best to use the latest code before asking questions :)

I understand cross compiling is the way to go.

Since I brought it up, here was the error I saw when I tried to run the
script that runs on the PC but fails spectacularly on the raspberry pi with
the precompiled packages 

roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml
linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0 <0030070030>
-unknown

high=16250 low=16240 span=10
center=16245
gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf
rfspace airspy
Using device #0 Realtek RTL2838UHIDIR SN: 0108
Found Elonics E4000 tuner
Exact sample rate is: 100.026491 Hz
Using Volk machine: generic_orc
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
VOLK: Error allocating memory (posix_memalign: 22)
Segmentation fault
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Re: [Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Marcus Müller]

Hi Rob,

so, first of all: I recommend doing the compilation on a PC
(cross-compiling). In all experiences I've known of, compiling on
something as weak and RAM-sparse as the Pi takes nights, and needs a lot
of swap memory, making it impractical. Also note that setting up the
cross-compilation environment shouldn't take longer than compiling on
the Pi iself.

So, first of all, what kind of OS are you using on the Pi? Is it
something like debian (in which I'd plainly recommend installing GR from
debian packages, those being relatively up to date, or using debian's
build systems with updated/modified sources), or is it more something
like a classical embeddded OS like an image generated by OpenEmbedded?

Then: GNU Radio comes with an ARMv7/cortex-a8 compatible toolchain file,
which you can use for cross-compilation to such a target; not being an
expert in RPis, I think only the Pi B+ is an ARMv7. Which one are you using?

Then, and that's mostly out of curiosity: Maybe it's easier to help you
find a good way if you tell us what you're planning to do with the
Raspberry Pi and GNU Radio – usually, the Pi is not really the go-to
choice for digital signal processing, so the complexity of SDR you can
do with it is limited, but it might well suit you!

Best regards,
Marcus

On 13.04.2016 04:25, Rob Roschewsk wrote:
>
> Hi all,
>
> I'd like to compile GR from source for a raspberry pi (arm) ... I know
> there are some flags that need to be passed to cmake but I can't find
> a complete list ... or at least a consistent list
>
> Is there a reference I could use???
>
> Thanks!
>
> --> Rob, KA2PBT
>
>
>
> ___
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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[Discuss-gnuradio] raspi FAQ/HOWTO/recipe ??????

[Rob Roschewsk]

Hi all,

I'd like to compile GR from source for a raspberry pi (arm) ... I know
there are some flags that need to be passed to cmake but I can't find a
complete list ... or at least a consistent list

Is there a reference I could use???

Thanks!

--> Rob, KA2PBT
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