I am trying to use a repeat block to increase the number of samples per bit of
a data source. It only runs once if the repeat number is anything but 1. I have
a attached a simple example of my code.Thanks...Tom
repeatNumberTest.grc
Description: Binary data
n change the
generated name of the embedded block by editing the block ID field when you
create the embedded block in GNURadio companion.
Hope this helps
On Feb 1, 2024, at 14:38, tom sutherland wrote:
I am running a VirtualBox Ubuntu 22.043 with Radioconda/gnuradio-companion. I
have a pyt
I am running a VirtualBox Ubuntu 22.043 with Radioconda/gnuradio-companion. I
have a python block that I want to use but when I try to open it, I get the
error /usr/bin/env: ‘/tmp/epy_block_0_nlgw0hml.py’: Permission denied. Its a
directory/file that I don't have access to.
1) How do I fix this
Has anyone downloaded and installed gr-lora from
https://github.com/BastilleResearch/gr-lora/ ? I follow the instructions but
get this error when I run cmake ../
"CMake error at CMakeLists.txt:128 (message): GNURadio Runtime required to
compile lora"
I am using Ubuntu 22.04.3 LTS and GNURadio
ct line so it is more specific
than "Re: Contents of Discuss-gnuradio digest..."
Today's Topics:
1. Some GRC files run with no errors but don't plot (tom sutherland)
2. Re: Some GRC files run with no errors but d
eam" is what you're processing
here.
Cheers,
Marcus
On 20.08.23 05:03, SHAKTHIVEL S 2021 Batch,PES University wrote:
Hi, You may check in the docs folder in the GitHub page under usage-manual,
Handling flowgraphs.txt and types of blocks.txt files until someone who is
exper
nt… but that would require that the delay block "waits" for a new
message for
every sample it processes. It doesn't (and it can't).
I think in your situation, learning how to write a Python (or C++, if that's
easier for
you) block to do in one place what you want to h
I want to use the output value of a signal generator as the delay value of a
delay block. Is there a way to pass the output of a signal generator(saw tooth)
to the delay block? I have attached an initial grc file and a picture of what I
want to do. Any help would be appreciated.Thanks...TomPS Do
Is there a tutorial, example or guide to creating feedback loop (PLL, Costas,
etc...) using Companion/python?
Thanks...Tom
How do I keep up with how many values in a file or streamed value (from RTL
device) that have been read into my flow graph? Normally in C/C++, Matlab
etc... I would just have a counter of some variety.
___
Discuss-gnuradio mailing list
Discuss-gnuradio@
How do you determine the index of the maximum value of the output of a FFT?
e.g. I have a FFT and then a "ComplexToMag^2" block and I want to know the max
value and its corresponding index (i.e. for a 4096 point FFT the index occured
at 63).Thanks...Tom
_
Is there a way to take the output from ablock and make it appear as though that
signal is a variable? e.g. take theoutput from a “signal source” block and sink
it into a block that creates a“variable” named ‘myfreqvar”. Then use
“myfreqvar” as a parameter in otherblocks.
Tom
_
I am using a Costas loop for carrier recovery with QAM16 data. The carrier is
only 2khz. The I/Q output of the Costas loop seems to track (the original
sin/cos of the modulating carrier's Frequency & Phase) steadily for a long
period (minutes) and then the Phase moves off, normally in +/- 45 or
I notice for some reason the scope display goes dim and seems to continue to
display signals but you can not change any sliders or change scope tabs and if
you try to stop it from the scope display(pressing the X in the upper left
corner) it says " The window, "My Scope" is not responding. Forci
I am trying to make a simple PLL using a VCO but I get an error
"RuntimeError:flow graph has loops!". Anyway around that?
Thanks...Tom___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
I wanted to use the Constellation Receiver Block for QAM16 but the Class
Reference only shows 8PSK, BPSK, DPSK PSK, and QPSK. Can this be used for 16QAM?
Thanks...Tom___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman
I have gotten the "Constellation Receiver" block so it seems to run without
errors but I don't see much out. I assume I am suppose to be feeding it a
complex baseband I/Q signal. What do the output "OUT, SYMBOL, Error, Phase
Freq" represent? I am getting signals out of the Error/phase/freq outpu
I am trying to use the Constellation Receiver Block and one of the Parameters
is "Constellation Object". Is this a pointer to an object and how/what creates
this object? I have looked at the qam.py file but don't follow how this relates
to placing a block down in gnuradio companion.
Thanks...Tom
I have in stalled pybombs. I looked at all the projects in the recipe directory
and have run "./pybombs install gr-ham" and a few others but can't figure out
what it is installing and WHERE did it put it. I thought it was installing some
examples but I can't find anything.
Thanks...Tom
_
I have simple 16QAM Modulator block and am plotting the constellation with and
without the a polyphase clock block . The constellation directly out of the
modulator is not 16 "points" or even blobs but "random" looking points. I put
it into a QAM Demod block and it demodulates it correctly. The
I have project with a sine wave signal source, mixers, QAM de/modulators, etc.
and have a couple of scope with multiple channels and a couple of WX GUI FFT
sinks. I have a throttle on a scope input close to the front end of the signal
chain. Everything seems to run for a 20-30 seconds, and then
I don't know how to post the answer to the discussion group correctly so I just
sent this to you. I got the same errors. I can write a wav file, I can play the
wav file using any other audio player but GNUradio "wav source" block gives me
the same " no samples.." error. I got around this by usin
I want to QAM16 encode a band limited (0-3khz) signal on one computer. I want
to connect this computer to another computer running a QAM16 Decoder program.
The QAM16 encoded signal needs to be able to be sent over the audio
channel(single channel) of the computer. How can take the complex output
I have audio block feeding a 16QAM modulator block and that directly connected
to a 16QAM demodulator block. This connection is "complex" where I am assuming
the I-Q is being passed as a complex number. I want to feed the output of the
16QAM modulator back out an audio output block then pass it
I have a simple 16QAM project. I want to do audio but for right now I
have a signal source "constant" input to the QAM module. I am trying to
display the constellation diagram but it's not displaying what I think
it should. I have a few questions
1) I would think that inputing a constant va
lly
(delay+keep1inN combination) as in attached FG
-Adeel
>____
> From: Adeel Anwar
>To: tom sutherland ; discuss-gnuradio@gnu.org
>Sent: Friday, July 5, 2013 10:25 PM
>Subject: Re: [Discuss-gnuradio] Simple QAM project
>
>
>
>
>Ca
Attached grc file
>
> From: Adeel Anwar
>To: tom sutherland ; discuss-gnuradio@gnu.org
>Sent: Friday, July 5, 2013 10:25 PM
>Subject: Re: [Discuss-gnuradio] Simple QAM project
>
>
>
>
>Can u attach ur GRC file?
>
>-Adeel
I am trying to get data through a QAM-16 Modulator and just display the data
stream on a Constellation Sink. I have 8khz sampled 8-bit data(char) going into
the QAM Mod block. I have the output of the QAMmod block going directly into
the Const Sink. I am not seeing anything on the Constellation
28 matches
Mail list logo
