ved from so I know what it is
trying to do
but obviously I have messed up somewhere.
Thanks
- Charles
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Here is my problem, its been asked a lot on the Internet but I can't seem
to get a solution/answer.
Traceback (most recent call last):
File "/home/branislav/Documents/GnuRadio GRC/chirpGui.py", line 378, in
tb = chirpGui()
File "/home/branislav/Documents/GnuRadio GRC/chirpGui.py", line 10
setting the io_signature::make to 1,-1,sizeof(float) but
that's less than ideal and doesn't work if in GRC i set number of outputs
to 1.
Again thank you all for your time.
Cheers,
Charles
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comes down to me not
really understanding how the items/samples are produced.
Any help would be greatly appreciated, even if it's just a URL pointing me
in the right direction.
Cheers,
Charles
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I am seeing the same problem here while running some tests.
Anyone else has any thoughts?
Running gnuradio 3.7.5, installed with the build-gnuradio script on Ubuntu
14.04.
Gnuradio
On Tue, Oct 7, 2014 at 6:18 AM, Thanasis Balafoutis
wrote:
> Hi,
> In the followning basic setup:
> File Source (
ng
through the code for some of the modulation blocks, but couldn't see how
they received the phase data for something like phase modulation.
On Wed, Apr 24, 2013 at 1:37 PM, Charles Hearn wrote:
> I'm new to working on gnuradio (experience operating it with a usrp but
> not devel
I'm new to working on gnuradio (experience operating it with a usrp but not
developing for it) so hopefully someone can help me out a bit here.
I want to write a module to compare different signals, looking for
differences in a few factors by passing some signal features over time to a
python prog
aroud 0.1666 or 0.20!
Can anyone help me on this?
Thanks,
Charles
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starts before the reading, things
> get messed up.
> Try starting the transmitter reading the pipe before you start the process
> that writes to the pipes. That did the trick for me.
>
> Charles
>>
>>
>>
> See man 7 fifo on your local Linux system.
>
> Nor
efore you start the process
that writes to the pipes. That did the trick for me.
Charles
On Mon, Mar 7, 2011 at 20:34, Marcus D. Leech wrote:
> **
>
> On Mon, Mar 7, 2011 at 2:45 AM, Tom Hendrick wrote:
>
>> Thanks Tom,
>>
>> I'm a beginner still with linu
Amateurs intend releasing all the code and a
companion low cost 1.3 GHz transmitter USB dongle to go with it.
Currently the USRP2 is being used as a development platform.
- Charles
On 02/03/2011 11:32, Dinos Pastos wrote:
Hi there
Just a quick question related to GNUradio.
Is it possible to use
.
- Charles
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Hi All,
When I try running gnuradio-companion I get
File "/usr/local/bin/gnuradio-companion", line 45, in
"""%gr.version()
AttributeError: 'module' object has no attribute 'version'
Anyone know what I have done wrong?
- Charles
___
Hi Luca
Remember you have to add 0.5 to both the real and the immaginary
parts of the signal.
self.gr_add_const_vxx_0 = gr.add_const_vcc((complex(.5, .5), ))
This line did the trick for me.
Charles
On Fri, Dec 10, 2010 at 15:00, Luca Pascale wrote:
> Hi,
>
> I have exactly
/s with no dropouts.
Unfortunately everytime I reboot my system I have to run the commands
again. What is the procedure for making these settings permanent?
I am no Linux guru hence the question. I am using Fedora 12.
- Charles
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Well I am glad to say my low power problem is fixed.
In the end I had to go into my uhd directory do a git pull
followed by a make and then a make install.
I now have 60 mW on 1.3 GHz.
Thanks for the help guys, especially to Jason Abele.
- Charles
http://www.g4guo.blogspot.com
Does your code set the transmit gain on the WBX?
Eric
Yes to 25. I checked the range and set it to maximum.
- Charles
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- Original Message -
From: "Jason Abele"
To: "Charles Brain"
Cc:
Sent: Monday, June 14, 2010 7:03 PM
Subject: Re: [Discuss-gnuradio] WBX power level
Hi All,
Has anyone measure the power level coming out of their WBX board?
Measured on a Gigatronics 8541 m
- Original Message -
From: "Philip Balister"
To: "Charles Brain"
Cc:
Sent: Saturday, June 12, 2010 4:54 PM
Subject: Re: [Discuss-gnuradio] WBX power level
Is your flowgraph delivering the maximum amplitude to the USRP?
Philip
I am not using gnuradio I am
30 - 70mW > 1.2 GHz
I know measuring power is notoriously inaccurate
but I was wondering what others have found.
Setup USRP2 WBX UHD
- Charles
http://www.g4guo.blogspot.com/
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I am associating a particular DC offset error with a corrected
transmitted block?
I can see the carrier going up and down on the Analyser but my
routine comes up with some silly values. I think it is because I have
the routine out of sync.
Sorry for the dumb questions :-)
- Charles
setu
do with the complex mixer in the FPGA. I have not ruled out my
own code yet but it seems unlikely.
- Charles
http://www.g4guo.blogspot.com/
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will try some other offset values.
In my last post I should have said OFDM not ODFM.
- Charles
- Original Message -
From: "Johnathan Corgan"
I haven't had the opportunity to try recent versions of UHD; I'll get
to that this week. But you should be able to move the L
with DVB-T and I can see it in the middle
of the ODFM waveform swamping the pilot tones.
I think some form of calibration routine is going to be necessary.
I guess I will just have to be patient and wait.
- Charles
- Original Message -
From: "Johnathan Corgan"
Hi,
Is there any way of calibrating out or mitigating the
carrier at the WBX tx frequency? I am sending
a wideband signal and the carrier (which I assume is
due to dc coupling in the WBX) is at a significant level
compared to my signal.
- Charles
Kit USRP2 - WBX - UHD
http
, what is their purpose? Any good documents to look
at relating to this? Thanks.
Charles
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hings happen. The output becomes distorted and the
Ethernet activity drops. When I go back to the original tx_rate
most times it recovers.
Are there any known problems with the UHD concerning rate
changes while sending?
- Charles
http://www.g4guo.blogspo
comfort zone at the moment.
- Charles
http://www.g4guo.blogspot.com/
- Original Message -
From: "Josh Blum"
To:
Sent: Sunday, May 09, 2010 4:52 PM
Subject: Re: [Discuss-gnuradio] Which version of UHD firmware should I beusing?
I should have added some notes when I put up th
Thanks Tim,
I wanted to make sure I was backing the right horse.
I have flashed the UHD UDP version and can ping it from my host.
Next I have to figure out how to build all the UHD utils. I will have a
look back at past emails to see if I can figure it out.
- Charles
http
Hello,
I am a bit confused, there seems to be two versions of the UHD firmware
a "Raw Ethernet version" and a "UDP version". I am about to try and move my
USRP2 application to UHD and I was wondering which version I should be
using? I have a USRP2 and a WBX board
This is what I use
http://www-users.cs.york.ac.uk/~fisher/mkfilter/racos.html
- Charles
- Original Message -
From: "Yan Nie"
To:
Sent: Monday, April 26, 2010 10:55 PM
Subject: [Discuss-gnuradio] how to decide the number of taps of RRC filter
Dear all,
I'm tryin
.
Cheers :)
Charles
On Mon, Apr 26, 2010 at 4:27 PM, Johnathan Corgan
wrote:
> On Mon, Apr 26, 2010 at 12:16, Charles Herdt wrote:
>
>> Do we have any details on licensing of the UHD?
>> You mentioned full FSF only for libusrp. Will UHD be closed source?
>
> I'll an
Johnathan or Matt
Do we have any details on licensing of the UHD?
You mentioned full FSF only for libusrp. Will UHD be closed source?
Charles
On Mon, Apr 26, 2010 at 2:17 PM, Johnathan Corgan
wrote:
> As Ettus Research has announced the UHD software support for USRP1 and
> US
linux issue was because of this document, or a separate source.
I'm only asking because the document is 10 years old and is using
RedHat 5 and Pentium 2s. I would assume the linux kernel support for
GigE has improved since then.
Charles
___
s the scheduler the main issue in the way it handles i/o between blocks
Charles
On Sun, Mar 14, 2010 at 5:52 PM, George Nychis wrote:
> Think of it this way...
>
> MAC *development* is severely limited by GNU Radio... it lacks the
> much-needed functionality to make information passing bet
r of
output items is determined or why my module is saying it needs 8162 I
would appreciate it.
Charles
On Sat, Apr 3, 2010 at 12:15 PM, Charles Irick wrote:
> Hi,
> I'm trying to write a module that works almost identical to the
> usrp2_source_16sc module, but I'm having trouble wi
led 142 samples
poll for more samples forever..
Any ideas or a description on how the receive system works would be
much appreciated.
version 3.2.2
Ubuntu 9.04
Thanks,
Charles
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Umair
It seems to me you are using the USRP block when you should be using the USRP2.
If not... which version of Gnuradio are you using?
Charles
On Wed, Mar 31, 2010 at 11:19 AM, Umair Naeem wrote:
> Hi,
>
> I have a problem concerning USRP2. I am using GRC to make flow graphs but
something that divides into 100M
would be really useful. I have tried the fractional interpolator and it
just sucks too many CPU cycles.
- Charles
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Hi,
I'm also having issues with the use of this block if I try the same
concept. I'm not concerned with the noise generation and just want to
modulate and then demodulate data. I am using the vector creation and
packing as stated above. The results I'm getting are deterministic,
just incorrect. Her
rs or web links related to USRP2 protocol level
development? Thanks.
Charles
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The problem has now been solved. I had assumed the USRP2's
DAC sample rate of 400 MS/s was the rate I had to interpolate to.
Not so, it should be 100/s MS/s.
Thanks all
- Charles
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Hello again Brian,
Well here is the screen shot.
http://www.chbrain.dircon.co.uk/usrp2_signal.jpg
The sample rate was set to 20 M, the frequency to 5 MHz
and the interpolation to 20. The WBX carrier was set to 1 GHz
I am sure I have done something wrong
- Charles
- Original Message
not supported. The documentation is fairly sparse and even more
so on the USRP2. The USRP2 sinks don't have the same naming format
as those for the USRP1 i.e sink_32fc vs sink_c which confuses me.
- Charles
- Original Message -
From: "Brian Padalino"
To: "Ch
I doing wrong ?
- Charles
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rmats are
different.
What I need to do is set the tx frequency to 1249 MHz
select the correct antenna output then pipe samples from
the input file to the usrp2 sink.
Any pointers would be most useful.
Be gentle
- Charles
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come on
as expected but the USRP2 can't be seen on one of them.
Oh well.
- Charles
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I assume it will be in /releases/usrp2-bin/trunk
- Charles
We haven't posted the USRP2 firmware which supports the WBX yet. Look
for it later today.
Matt
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tenna input but I can't figure out how to do it.
usrp_fft.py will take an antenna selection but usrp2_fft.py does not.
Can someone tell me what to do next, I have searched the email archive
and can't find an answer to this obvious question.
- Charl
I
should be using something like tx_fc32, but the data doesn't matter to
me right now) ?
Also, what are the reasons for using the vector i/o in this instance?
OS: Ubuntu 9.04
Using dev code from git
Charles
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quipment since I have a couple of Mac mini's laying around and am
not a developer.
Will you be doing any testing? I would be glad to lend assistance if
I can.
Charles Brown, KD6IMT
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underflowing, or are perfectly in sync.
Only overflow with pause frames to control makes sense to me. If this
is not the case an explanation would be very much appreciated.
Charles
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processing power
if compared to the 32 bit kernel on the same machine.
Good luck!
Charles
On Wed, Jan 13, 2010 at 12:09 PM, Michael Dickens wrote:
> I'm wondering if anyone has successfully installed GR on CentOS 5 x86_64,
> and if so any advice would be appreciated. Thanks in advance. -
d for the first time.
Charles
On Wed, Jan 6, 2010 at 4:42 PM, Eric Blossom wrote:
> On Wed, Jan 06, 2010 at 04:32:21PM -0500, Charles Irick wrote:
>> My apologies,
>> Distro: Ubuntu 9.04
>> Kernel: 2.6.28-17-generic
>> GNU Radio version: I'm pretty sure it's 3.
can read up on this
real-time scheduling because I will definitely need to solve some
similar issues in the future.
On Wed, Jan 6, 2010 at 4:10 PM, Eric Blossom wrote:
> On Wed, Jan 06, 2010 at 03:44:26PM -0500, Charles Irick wrote:
>> Hello,
>> I hooked my usrp2 up to a spec
Hello,
I hooked my usrp2 up to a spectrum analyzer and tried using the signal
generator in gr-utils to see what I could get. The carrier signal
seems to be turning on and off and I'm getting a lot of peaks at
various frequencies probably from the carrier turning back on. Is this
a code issue, norma
wondering if there are any utilities the USRP2 provides for
designing radios where the sampling rate and bitrate are not
multiples, such as a DDS, given that the sampling rate is locked to
100MS/s. Thanks in advance.
Charles
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Thank you for the fast reply. It looks like I need the SATA fanout
connectors to be the host in this case because pin 2-3 are TX for the
SATA port. Would there be any issue having the mini-SAS as the target?
(part: iSAS-7P88-U)
Charles
On Mon, Dec 7, 2009 at 2:29 PM, Matt Ettus wrote:
> On
because the mimo cable is a crossover? Thanks
in advance for any help.
Charles
On Tue, Dec 1, 2009 at 4:30 PM, Matt Ettus wrote:
> On 12/01/2009 12:58 PM, Charles Irick wrote:
>>
>> Hello,
>> I'm most likely having a clock issue because I cannot get any data
>> trans
acity to import the raw samples for easy visualization.
I'd be curious to know of other solutions for this.
Charles
On Thu, Dec 3, 2009 at 2:49 PM, Jason Uher wrote:
> All,
>
> I was wondering if there was a simple method that allows someone to
> step through a gnuradio flow gra
ly,
it's supposed to derive it from the data).
- My only clocking options on the GTP's are 150 or 75MHz. I'm not sure
if I should clock the USRP2's FPGA or the reference differently to
match this.
Any help with the clocking scheme would be much appreciated. Thank you.
Charles
ISE for the vanilla microblaze as I
didn't want to mess up the toolchain for standard development.
Charles
On Tue, Nov 24, 2009 at 6:10 PM, Charles Irick wrote:
> Hello,
> I'm looking to use the MIMO port to send serial data to a Virtex5
> board and am trying to get an idea of
g the MIMO port.
Charles
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Just in case someone else has the same problem:
if you need to force Jack audio:
from gnuradio import audio_jack
and on the source/sink linles, use audio_jack.source or
audio_jack.sink instead of audio.source and audio.sink.
Thanks to Oswald Berthold for the help.
Best regards,
Charles
audio compiled in gnurario 3.2.2.
Any suggestions?
Thank you in advance,
Charles A. Herdt
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The current implementation:
I am trying to send various commands to a UAV. The system uses a file
source, packet encoder, dpsk modulator, throttle, multiply by constant,
and USRP sink using RFX400 daughter boards. The flow graph
(connections) happen in the order stated.
If the flow graph
I'm trying to run the usrp_wfm_rcv.py example and I get the errors
below. The gui interface comes up but appears to lock up immediately.
I have tried to look in the file gr-wxgui/src/python/forms/forms.py
under the radio_buttons class but I see no index parameter. This is
probably a simple error bu
Just getting started with GNU radio and I'm trying to compile the source
code with the instructions on the wiki for Ubuntu (8.10 Intrepid). I got the
code from the SVN and bootstrap runs fine, configure will not build the
following (which I assume is ok ) gcell, gr-gcell, gr-audio-jack,
gr-audio-os
Hello All,
My name is Charles and I'm a senior at California State University
Northridge. The team I am with is currently working on implementing a
digital communications scheme between a flying object and a ground based
station.
I am having issues with the Demodulation block of the DPS
ter.
If I am missing something that could solve this more easily, let me know.
Charles
-Original Message-
From: Matt Ettus [mailto:m...@ettus.com]
Sent: Friday, February 13, 2009 2:52 PM
To: Suprin, Charles E.
Cc: Douglas Geiger; discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio
need to wait for a newer FPGA/VHDL firmware release for that to happen.
Charles
-Original Message-
From: discuss-gnuradio-bounces+csuprin=mitre@gnu.org
[mailto:discuss-gnuradio-bounces+csuprin=mitre@gnu.org] On Behalf Of
Douglas Geiger
Sent: Friday, February 13, 2009 2:02 PM
To
Eric and Doug,
I like Doug am basing things off the rx_streaming_samples.cc. It seemed
easier to work with to get access to timestamps.
Charles
-Original Message-
From: discuss-gnuradio-bounces+csuprin=mitre@gnu.org
[mailto:discuss-gnuradio-bounces+csuprin=mitre@gnu.org
Hello,
I have hooked up the USRP2 to a PPS and a GPSDO 10MHz reference.
Is there a way I can tell if the FPGA is seeing these signals and locking onto
them?
Charles
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Martin Braun wrote:
On Sun, Jul 20, 2008 at 10:07:00AM -0700, Charles N Wyble wrote:
Has anyone ever implemented ADSL using GNU Radio. It should be
possible rite?
H. Not sure why it would be possible. GNU Radio as far as I can tell
is focused on radio. :)
Hm, DSL is
up and in fact I am looking forward
to it.
Charles Wyble
--Original Message--
From: Rudy Moore
Sender: [EMAIL PROTECTED]
To: discuss-gnuradio@gnu.org
Sent: Jul 20, 2008 12:51 PM
Subject: Re: [Discuss-gnuradio] Using USRP/GNURADIO Commercially
Matt-John wrote:
> Hello All,
>
&
ply purchase a DSL modem PCI card from many online
retailers. There are several that work in Linux for example.
--
Charles N Wyble (818) 280-7059
http://charlesnw.blogspot.com
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On Thu, 2008-07-17 at 07:55 -0700, Eric Blossom wrote:
> I've checked in an SMP-aware scheduler and would love folks to start
> testing with it. I'm seeing good scaling performance when running it
mp-sched cross compiles to the ps3 ok. You have to build boost 1.35 on
the ps3 (does not take long)
Someone posted to the list asking about GSM/gnuradio. Came across a
project when researching some other stuff (related to FPGA).
This might be of interest.
http://wiki.thc.org/gsm
--
Charles N Wyble (818) 280-7059
http://charlesnw.blogspot.com
On Wed, 2008-07-09 at 14:26 -0700, Eric Blossom wrote:
> On Wed, Jul 09, 2008 at 04:38:20PM -0400, Charles Swiger wrote:
> > Here is a patch to add windowing to
> > gcell/src/lib/wrapper/spu/gcs_fft_1d_r2.c , seems quick and snappy:
> No need for all this shuffling...
>
On Wed, 2008-07-09 at 16:38 -0400, Charles Swiger wrote:
> Here is a patch to add windowing to
> It will also break gr-gcell/src/qa_fft.py
>
Actually it will not, window not used there.
--Chuck
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Here is a patch to add windowing to
gcell/src/lib/wrapper/spu/gcs_fft_1d_r2.c , seems quick and snappy:
24a25
> #include
50a52
>
52,53c54,69
< // FIXME pointwise multiply in *= window
< assert(0);
---
> /* pointwise multiply: in *= window
> *
> * shuffle pattern to make
On Tue, 2008-07-01 at 20:08 -0400, Charles Swiger wrote:
> On Tue, 2008-07-01 at 20:00 -0400, Charles Swiger wrote:
> > Ok - I've redone this several times with variations; this last time was
> > very carefuly 'by the book' and I run into this after a fresh fc8,
On Tue, 2008-07-01 at 20:00 -0400, Charles Swiger wrote:
> Ok - I've redone this several times with variations; this last time was
> very carefuly 'by the book' and I run into this after a fresh fc8,
> updates, sdk3.0, Devel Tools, kernel 2.6.25.6-27.fc
On Tue, 2008-07-01 at 15:22 -0700, Eric Blossom wrote:
> On Tue, Jul 01, 2008 at 06:05:28PM -0400, Charles Swiger wrote:
> > Just need a clearification: the gnuradio FC8 installation procedure
> >
> > http://gnuradio.utah.edu/trac/wiki/PS3FC8Install
> >
> Yes. Tha
Just need a clearification: the gnuradio FC8 installation procedure
http://gnuradio.utah.edu/trac/wiki/PS3FC8Install
says to put
exclude=blas blas-devel oprofile-debuginfo oprofile numactl nuactl-devel
in /etc/yum.conf, but the SDK3.0 installation guide, on p.35 at the
bottom states to remove a
Playing with gr-gcell/src/qa_fft.py and seeing if it can be made to
handle more than one size=32 fft. If I simply double the input data so
it gets 2 chunks, I get a segmentation fault. Might this be the same
thing as the 'make check' on Fedora7 issue?
This works fine:
---
ph
Just poking around - since atsci_equalizer_lms::filter1 is at the top of
the oprofile report, I tried setting NTAPS to 64 instead of 256 and that
certainly made it faster, and decoding still turns in zero errors on an
excellent signal.
NTAPS 256:
samples %app name
On Sat, 2008-06-21 at 11:07 -0700, Eric Blossom wrote:
> On Sat, Jun 21, 2008 at 11:01:22AM -0400, Charles Swiger wrote:
> > the bit_timing_loop for 16MHz? I'll check in what I have
>
> Please do this on a branch.
>
Ok.
> > static const double BANDWIDT
On Fri, 2008-06-20 at 13:45 -0700, Eric Blossom wrote:
> considerably more up-to-date than that in 3.1.1. Chuck Swiger has
> been working on it.
>
> Eric
Ah, I still need to check in the complex pll stuff that gets rid of
> gr_freq_xlating_fir_filter_ccf 2.68%
and allows the pll to run at 16M
the issue.
Is anyone else having this issue?
Charles
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l be no ambiguity.
Matt
---New Comments---
Matt,
Your comments above confused me.
Looking at <http://www.gnuradio.org/trac/wiki/USRPClockingNotes>, it
claims that the cards use their own crystal oscillators. Wouldn't the
above change require hardware changes on the F
On Sat, 2008-05-31 at 13:45 -0400, Charles Swiger wrote:
> 'make check' fails with a segfault in 'gcell/src/apps/test_all'.
played around with gdb and finally found this while stepping:
Breakpoint 17, ~worker_ctx (this=0xf7e0071c) at
gc_job_manager_impl.cc:1241
1241 i
Here's what I found on the ps3 system so far:
Current system software is 2.35 and had to use a later
'CELL-Linux-CL-20080201-ADDON.iso' otherwise got a blank screen on
'start other os'. 20071023 is the version in the wiki, I'll try to
update things at some time.
Kernel 2.6.21 works fine but has t
On Sat, 2008-05-24 at 21:13 -0400, Achilleas Anastasopoulos wrote:
> Chuck, Eric,
>
> I think there is a way to perform the cPLL at 8 complex Msps and
> upsample to 16Msps only at the very end when you want to get the Real
> signal out for further processing. I believe this works (i didn't see
On Thu, 2008-05-22 at 22:53 -0400, Achilleas Anastasopoulos wrote:
> Chuck,
>
> I have a question regarding the comment you made in an earlier email on
> the subject:
>
> You said:
> -
> Now my question: Is it possible to tune the usrp so the carrier is at
> +.31 Mhz ? (band center a
On Tue, 2008-05-20 at 21:55 -0400, Brian Padalino wrote:
> On Tue, May 20, 2008 at 9:38 PM, Charles Swiger <[EMAIL PROTECTED]> wrote:
> > The issue turned out to be jiggering the numbers that say "I strongly
> > suggest that you not mess with these..." * by .
On Tue, 2008-05-20 at 21:00 -0400, Brian Padalino wrote:
> On Tue, May 20, 2008 at 8:52 PM, Charles Swiger <[EMAIL PROTECTED]> wrote:
> >
> > gr_complex IQ = input * gr_complex(a_cos,-a_sin);
> >
> > which would be necessary to handle negative frequencies I thin
After converting atsc_fpll to handle complex input (to eliminate one
upconverter) it almost works, only the video out has problems.
The problem starts when this:
float I = input.real() * a_sin;
float Q = input.real() * a_cos;
is changed to this:
gr_complex IQ = input * gr_complex(a_cos,-a
Is gr.pll_carriertracking_cc a suitable replacement for atsc_fpll? The
atsc one appears to have a loop filter that the carriertracking one does
not:
atsc_fpll:
float input = agc.scale (in[k]);
nco.step ();// increment phase
nco.sincos (&a_sin, &a_cos); // compute cos
On 17.11.2006 19:45 Eric Blossom wrote:
> Re: PS3/Cell BE platform
>
>
> Sounds like fun.
>
> And yes, I think we could get the HDTV receiver running in real time ;)
>
> Eric
>
>
In light of the experience gained since then, is that still a reasonably
attainable goal?
The only thing stop
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