Hi Pedro,
i dont know about your linux distro or the way of your gnuradio
installation.
You need the gr-osmosdr package for the RTL block in gnuradio. You have
to blacklist the dvb_usb_rtl28xxu module in your modprobe configuration.
This are the basics in a short for driving RTL sticks in gn
i use a soundcard which could sample at a sample rate of 192 kbits. if i have a look at the alsa block i could see options up to sample rate of 48k. Because i could set the sample rate in the alsa block i think that the alsa block is able to set sample rate of a soundcard. So how could i tell gnura
Hi Tom,
> I'm not sure that I understand. What "alsa block"? Are you talking about the audio source/sink blocks? And I'm assuming you mean inside GRC?
Yes, sorry, I mean the audio sink block which talks to the alsa system.
>The sample rate of this blocks is a combo box that is editable, whi
57 khz and 76khz.
regards,
Andy
Gesendet: Montag, 21. September 2015 um 22:39 Uhr
Von: "Marcus Müller"
An: discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] Soundcards / alsa block / sample rates
What device string are you using?
On 21.09.2015 22:32, Andreas Ladanyi wr
I solved the problem.
The issue was an overdriven amplifier because the output gain was to high and so there are a lot of noise and phantom signals.
Gesendet: Freitag, 25. September 2015 um 23:12 Uhr
Von: "Andreas Ladanyi"
An: "Marcus Müller"
Cc: discuss-gnuradio
Hi,
i want to create a file for example with a sine lookup table. I use a signal source und a file sink. I think about how it is possible to get sine array with a amount of 255 (8 bit) values with 8 bit for each entry.
andy
___
Discuss-gnuradio m
ector source block.
andy
M
On 20.12.2015 13:40, Andreas Ladanyi wrote:
Hi,
i want to create a file for example with a sine lookup table. I use a
signal source und a file sink. I think about how it is possible to get
sine array with a amount of 255 (8 bit) values with 8 bit for each
entry.
Hi Marcus,
Well, first:
Signal Source can't produce 8bit signed integers by itself, so you'll
have to convert whatever you configure the signal source for to char,
eg. you could set it to "float" and use the "float to char"
conversion. Make sure the result has amplitude 127. Properly configur
Hi Marcus,
My first idea is: python has to sample the 256 samples (for one
period) from lookup table in exactly one second. So i think i need a
timer which calls the next sample in the lookup table all 3,9 ms.
My first idea above was to produce the sine wave from the lookup table
(which i ha
Hi,
iam trying to compile GNURadio with the build-gnuradio script. Iam running a BananaPi (armv7 / cortex-a9) with the last raspian image for the Pi.
The building process showed me two error messages. One message was that cmake is below 2.8.10. So i compiled and installed the last cmake 3.1
I must correct a detail. The datasheet tells me that bananapi has a
Cortex-A7.
cat /proc/cpuinfo:
Processor: ARMv7 Processor rev 4 (v7l)
processor: 0
BogoMIPS: 1431.55
processor: 1
BogoMIPS: 1436.46
Features: swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
idiva
On Fri, Jan 9, 2015 at 1:37 PM, Andreas Ladanyi wrote:
I must correct a detail. The datasheet tells me that bananapi has a
Cortex-A7.
cat /proc/cpuinfo:
Processor: ARMv7 Processor rev 4 (v7l)
processor: 0
BogoMIPS: 1431.55
processor: 1
BogoMIPS: 1436.46
Features
Am 09.01.2015 um 23:29 schrieb Tech:
I think when I built it I used:
cmake -DCMAKE_CXX_FLAGS="-mcpu=cortex-a7 -mfpu=neon-vfpv4
-mtune=cortex-a7 -funsafe-math-optimizations" ../ -Wno-dev
I also had to enable swap space because the bpi doesn't have enough
memory for some of the compile stages:
With the latest LUbuntu (instead of the latest raspian like in my last
mails) version of Banana Pi the following error results when compiling
gnuradio with the gnuradio build-script:
Linking CXX executable test_all
libvolk.so.0.0.0: undefined reference to
`volk_32fc_x2_multiply_32fc_neonasm'
With the latest LUbuntu (instead of the latest raspian like in my
last mails) version of Banana Pi the following error results when
compiling gnuradio with the gnuradio build-script:
Linking CXX executable test_all
libvolk.so.0.0.0: undefined reference to
`volk_32fc_x2_
Hi,
Bananapi / LUbuntu
After building GNURadio with the build-script and compiling / installing
with success i can start gnuradio-companion or any gnuradio based py
application but i get the following error messages.
===
linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.001
Hi,
Bananapi / LUbuntu
After building GNURadio with the build-script and compiling / installing with success i can start gnuradio-companion or any gnuradio based py application but i get the following error messages.
===
linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.001
Hi Marcus & Tom,
yes, iam using the buil-gnuradio script. The process was interrupt when the gnuradio build process was working. I had to start cmake manualy like described on the gnuradio website for "native compiling" and it was ok.
I know uninstalled the gr-osmso via make uninstall and t
Hi,
iam testing an UKW Radio Receiver GRC project (gr-rds) on bananapi. The
application starts. The tuned radio station sounds clicking. Changing
any parameter in the GUI is very difficult/slow.
top tells me a memory usage about 20 %. CPU usage is nearly 200 %
(bananapi has 2 CPUs). At any w
Hi Marcus,
Yes, i tested this project with the same RTL stick on an "old" dual-core (actually i dont know the exact CPU parameters) notebook and it works perfectly. If i start the project from the console via "python2.7 file.py" i get no warnings.
Andreas
Hello Andreas,
you never need a
device to small ?
And yes the python process is about CPU 180 % in top, i could remember. The other processes had a small mem and cpu usage.
Cheers,
Andreas
Gesendet: Freitag, 16. Januar 2015 um 09:43 Uhr
Von: "Marcus Müller"
An: "Andreas Ladanyi"
Cc: disc
Hi,
iam testing gnuradio-companion editor on the Bananapi LUbuntu. When i am
editing a block or drawing a block i recognize in top that the python
process has a 100% CPU (i have 2 CPUs) load. The gnuradio-companion
editor reacts very slow.
Is it possible to tell the editor or python to use 2
Hi Marcus,
Hi Andreas,
GRC is already as multithreaded as GTK applications can generally be --
I think the bottleneck here is really your Bananapi's CPU, its RAM and
its graphics card driver.
If i stop the drawing of all the graphs in the compiled GNU Radio
application, i could change parameter
Hi chris,
i installed the GRC 3.7 via the build-script
(http://www.sbrac.org/files/build-gnuradio) from GNURadio. With the
build script a lot of blocks will be installed. The RTL-SDR source will
be installed and works. I think the result of the build-script is a good
and working GNURadio base
Hi,
i want to run an gnuradio .py application from the command line and want
to choose parameters (like the frequency or sound level) on the command
line. So i think about if it is possible to set block parameters /
variables without graphical sliders or graphical textboxes from the
command l
ameter block ?
Am 03.04.2015 um 09:56 schrieb Chris Kuethe:
You want a "Parameter" block, from the Variables section.
On Fri, Apr 3, 2015 at 12:51 AM, Andreas Ladanyi
wrote:
Hi,
i want to run an gnuradio .py application from the command line and want to
choose parameters (like th
Hi Chris,
That's it. Thank you very much :-)
Andy
Am 03.04.2015 um 19:50 schrieb Chris Kuethe:
here's an example. "python parameter_demo.py --help"
maybe run your script with --help to see what options it will accept...
On Fri, Apr 3, 2015 at 10:20 AM, Andreas Ladanyi
Hi,
i have two grc applications. One TCP server application and one TCP
client application. I want to change a parameter with a WX GUI slider on
the client side and transport it to the server side. My first idea was
to connect a variable / parameter block with a TCP/UDP block and set a
specif
i want to correct myself. I dont want to transfer the parameter/variable
itself. I want to transfer the content of it.
Am 05.04.2015 um 19:57 schrieb Andreas Ladanyi:
Hi,
i have two grc applications. One TCP server application and one TCP
client application. I want to change a parameter with
Hi,
iam trying to setup a grc project with 2 TCP sinks server blocks each with own TCP port but both TCP blocks with the same IP. So i want to open 2 different TCP Ports at the same host and same IP. At the other grc project iam trying to setup 2 TCP source client blocks which connect to the
Hi,
when i want to start a grc project i get the error message: libGL error: failed to load driver: i965
Iam working on odroid (MALI 400 GPU) 3 with Ubuntu 14 and i start the grc via ssh and X-Forwarding on my PC.
The grc project i want to start and run on the odroid works great and the
radio.org/doc/doxygen/classgr_1_1blocks_1_1file__descriptor__sink.html
[2] https://github.com/gnuradio/gnuradio/blob/master/grc/grc_gnuradio/blks2/tcp.py#L70
[3] https://github.com/marcusmueller/gr-tcp/blob/master/python/tcp_sink.py really, just wrote this in a hurry. didn't even care to syntax chec
Hi together,
i am using grc 3.7.6.1. The system is odroid with ubuntu 14. I tested
the alsa system with aplay and the sound works.
When i start my project on odroid i get the following error message. On
my desktop pc with grc 3.7.2.1 / ubuntu 14 the grc alsa works.
INFO: Audio sink arch:
with the mali driver could be
load instead of the armsoc driver. The reaction of all windows /
textboxes / sliders are better. This problem was not only with the
gnuradio guis instead it was a general problem.
The libgl error is always present.
Am 18.05.2015 um 15:06 schrieb Andreas Ladanyi
Hi,
i try to install gnuradio and some apps with pybombs and app_store.
When i want install and build gr-osmosdr i get the following error message:
[ 2%] Building CXX object
lib/CMakeFiles/gnuradio-osmosdr.dir/airspy/airspy_source_c.cc.o
/home/odroid/pybombs/src/gr-osmosdr/lib/airspy/airspy_s
Hi rich,
on which hardware platform are you working ? Is this a PC or embedded
device ?
cheers,
Andy
Am 27.05.2015 um 01:09 schrieb Richard Bell:
GNU Radio 3.7.8, Ubuntu 14.04
I have an admittedly large number of blocks in my current flow graph
because I'm in the middle of some hardcore de
Hi Murray,
thats an interesting fact.
My project has a lot (i didnt count them) of blocks. I have the same
delay problem on my PC and on my embedded device. On the embedded
device its slower than on my pc :-)
If i use only a few blocks than the delay is short.
So i think your theory and su
Hi,
i read some tutorials about creating new blocks.
Iam asking my self a simple question and i think i couldnt find the answer:
How is it possible to fill a python grc variable block with data from
another block C++ variable.
I know between C++ and python is the SWIG Framework. What to prog
Hi Marcus,
Dear Andreas,
How is it possible to fill a python grc variable block with data from
another block C++ variable.
not really. GRC variables are a concept that doesn't exist in the flow
graph or, really, in the python file that GRC generates. They just are
python variables used when se
Hi Marcus,
is it possible to remove GNURadio from 12.04 with apt-get and install
the GNURadio 3.7 branch with pybombs without switching to Ubuntu 14 ? I
dont know if the dependencies are ok for 3.7 in 12.04.
regards,
Andy
Am 03.07.2015 um 18:36 schrieb Marcus Müller:
Hi Anamay Kane,
that s
Hi Ron,
have a look at https://gnuradio.org/redmine/projects/gnuradio/wiki/Embedded
You have to native compile:
cmake -DCMAKE_C_FLAGS="-march=armv7 -mthumb-interwork -mfloat-abi=hard -mfpu=neon
-mtune=cortex-a7" -DCMAKE_ASM_FLAGS="-march=armv7 -mthumb-interwork -mfloat-abi=hard
-mfpu=neon"
Hi,
i want to use an external usb sound device. It works without any
problems when playing back music. I dont know how the audio sink block
or gnuradio works with this extern sound device. Howto tell gnuradio to
read all possible sample rate values and use this device ?
Andy
___
Hi Marcus,
Hi Andy,
assuming a modern linux.
Ubuntu 14, yes i think this is a modern linux.
In the Audio sink/source, you can enter the device name; potential names
can be found by running
aplay -L
GNU Radio doesn't know anything about the supported rates of sound
cards; you will need to try
Hi Marcus
My soundcard support sample rates up to 192khz. So iam asking me how
this sample rate could be set manual or the automatic selected
samplerate could be veryfied. In the audio sink block max. 48khz could
be set.
What device name are you using? If you happen to use "" or "default",
it's
Hi Michael,
i read your mail and i could remember i had a similar problem with a lot
of lost sync and bad block messages.
My solution was to use a different RTL USB stick and to play with
antenna type / antenna position and the gain of the RTL stick.
I used a "classical" lamda / 2 dipol UKW
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