I got it. If the message port defined in grextras is disconnected, the
message sink or source block will not in the flowgraph.
Thanks Tom.
Best regards,
Damon
On Thu, Apr 24, 2014 at 12:01 AM, Damon qiu.guowang...@gmail.com
mailto:qiu.guowang...@gmail.com wrote:
Hi Tom,
Thanks for
Hello Marcus, i have updated the gnuradio from git and now i have this error
when make:
[ 60%] Built target _digital_swig_swig_tag
[ 60%] Building CXX object
gr-digital/swig/CMakeFiles/_digital_swig.dir/digital_swigPYTHON_wrap.cxx.o
g++: Internal error: Killed (program cc1plus)
Please submit a
On 04/25/2014 06:23 AM, julian wrote:
Hello Marcus, i have updated the gnuradio from git and now i have this error
when make:
[ 60%] Built target _digital_swig_swig_tag
[ 60%] Building CXX object
gr-digital/swig/CMakeFiles/_digital_swig.dir/digital_swigPYTHON_wrap.cxx.o
g++: Internal
On Fri, Apr 25, 2014 at 04:14:30PM +0400, Anton Komarov wrote:
Hi, you can find in attach AM demodulator grc file. Everything is
straight forward with demod but audio file generated looks weird. Only
positive values of amplitude.
The particular definition of amplitude adopted by GNU Radio
But when we have only positive values that means in fact we have 0.5 DC
offset, and that is bad. Moreover i've made test recording with GQRX -
waveform is fine! Looking into the code, nothing special, am
demod-low-pass-wav-sink.
--
public PGP key
http://pastebin.com/dqZqgyVE
On Fri, Apr 25,
On Fri, Apr 25, 2014 at 05:25:54PM +0400, Anton Komarov wrote:
But when we have only positive values that means in fact we have 0.5
DC offset, and that is bad. Moreover i've made test recording with
GQRX - waveform is fine! Looking into the code, nothing special, am
demod-low-pass-wav-sink.
It looks like this was a gnu.org mail server problem. And it appears as
though at least most of the messages were just delayed in getting out and
not actually lost.
Tom
On Thu, Apr 24, 2014 at 11:25 PM, Robert Ghilduta robert.ghild...@gmail.com
wrote:
Yea there's definitely something weird
On Thu, Apr 24, 2014 at 10:14 PM, Vanush Vaswani van...@gmail.com wrote:
Try decreasing the buffer size in gnuradio-runtime/lib/flat_flowgraph.cc
I use:
#define GR_FIXED_BUFFER_SIZE 2048
There are a number of hooks to each block to set various values to help you
control stuff, like
Thanks a lot. It does work!
--
public PGP key
http://pastebin.com/dqZqgyVE
On Fri, Apr 25, 2014 at 5:41 PM, Michael Ossmann m...@ossmann.com wrote:
On Fri, Apr 25, 2014 at 05:25:54PM +0400, Anton Komarov wrote:
But when we have only positive values that means in fact we have 0.5
DC
An AM demodulator is a squaring function. It can only *ever* produce positive values. You can remove DC offset by using a high-pass filter after it.
on Apr 25, 2014, Anton Komarov anton.koma...@gmail.com wrote:
But when we have only positive values that means in fact we have 0.5 DC offset,
The use of VERBATIM in commit dee85a7f4932c2475d9e84c5f92c2f3220aed3e6
affected the expansion of ${pyexe_native} for cross builds:
#!/usr/bin/env;python
is not the same as
#!/usr/bin/env python
Signed-off-by: Andy Walls a...@silverblocksystems.net
--
diff --git
Dear sir
What is the maximum i value in for loop in a c++ block
Neil
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Hello Philip, thanks for the help but i found another problem with this and
didn´t find any solution on the web.
i´m trying to create the swap file folowing this instrucctions i found
here(i´m not sure if they are correct):
http://elinux.org/BeagleBoardUbuntu#Creating_a_Swapfile
That would depend on the type of "i", but generally, if a single-precision "int", then 2^31.
But this is a generic programming and C/C++ question, not specifically related to Gnu Radio at all.
on Apr 25, 2014, MHMND Herath mh...@ou.ac.lk wrote:
Dear sir What is the maximum i value in for loop
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
This question is very unclear.
Please clarify.
On 25.04.2014 16:58, MHMND Herath wrote:
Dear sir What is the maximum i value in for loop in a c++ block
Neil
___ Discuss-gnuradio
mailing list
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Actually I'm a little confused - Is seeing an AGC in an AM demodulator
something you usually do?
Especially the feedforward AGC should be rather err jumpy with a scope
of but 256 samples, unless I'm missing something; f_sample seems to be
1024ksps,
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi anonymous,
although I feel your mail is kind of bold advertisement, I'm going to
comment on this:
- - Using LibUSRP is a bad choice. It's been outdated *for years*. UHD
is the way to go.
- - Recent GNU Radio (3.7 and 3.6.*) doesn't support
Marcus, w/o AGC audio sometimes is creapy. I have tested AGC2, tried to
play with attack and decay, but at last when there is a plane in the
vicinity dongle overloads and sound become very loud. Then i tested FAGC
and it fits well! 1024M/64 gives 16k and 256 samples equals - 62 ms of
signal. Works
On Fri, Apr 25, 2014 at 10:47 AM, Andy Walls a...@silverblocksystems.netwrote:
The use of VERBATIM in commit dee85a7f4932c2475d9e84c5f92c2f3220aed3e6
affected the expansion of ${pyexe_native} for cross builds:
#!/usr/bin/env;python
is not the same as
#!/usr/bin/env python
On Fri, 2014-04-25 at 11:38 -0400, Tom Rondeau wrote:
On Fri, Apr 25, 2014 at 10:47 AM, Andy Walls
Thanks, Andy. In the future, can you either open an Issue on
gnuradio.org or send us a pull request through github? That helps us
track these things and makes sure they don't get lost.
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
A shoot, I overlooked the 64 decimation rate... Sorry about that.
On 25.04.2014 17:36, Anton Komarov wrote:
Marcus, w/o AGC audio sometimes is creapy. I have tested AGC2,
tried to play with attack and decay, but at last when there is a
plane in
On Thu, Apr 24, 2014 at 11:32 AM, Ed Criscuolo
edward.l.criscu...@nasa.govwrote:
How do I find the index of the max value in a vector from GRC?
The max_xx block outputs the max value, but not its
index, despite what it's documentation says:
Data is passed in as a vector of length from
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Ed,
I'm on a train. I wanted to try out how long it takes to do it
including implementing rudimentary QA. So I just went ahead and tried:
about 205s, most spent on figuring out how to get the IO signature
straight.
Enjoy:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Ben,
this is basically hardware access that can't be abstracted to a sample
stream, so no, you can't do it with GRC out of the box.
What you can do is write a C++ class, implementing a message receiver,
communicating with the USRP, and wrap that
Actually, I've always thought that it would be useful to be able to acquire a "handle" for a block, for use in "helper functions" within GRC, you can
actually achieve a fair amount with "helper code" that is hung off of buttons or function-probes and the like.
All of the GPIO stuff in gr-uhd is
Hi,
I've been pottering around in GRC trying to get a pair of function
probe's to update the QT fosphor GUI sink's centre frequency by calling
self.set_freq(float(subprocess.check_output(['/usr/bin/rigctl', '-m',
'2', 'f']).strip()))
at 5Hz and
self.set_samp_rate(self.samp_rate)
at 20Hz.
Marcus,
Let's find out and compare USB 2.0 SDR devices running certain applications
versus your USB 3.0 SDR devices ?
No more talking please.
The ASRP1, now to be called, SDR MIMO, will be available next month as well
too to provide USRP1 applications reliable
SDR environments. I've had it
Martin,
I wanted to publicly address this kind of behavior that we've talked about
in the past because I want to make sure everyone recognizes how we try and
do business here. We really work hard on this mailing list to keep the
discussion civil and technical. Arguments are welcome, but they need
Hi.
What is the recommended gr-ais repo/branch/commit that yields a working
gr-ais with GnuRadio 3.7.x (git commit 3831dd37c8df19e25fa258db4d393ee068889dae)
and the Ettus UHD 3.7.1
GitHub shows this fork network:
https://github.com/bistromath/gr-ais/network
Right now I'm using bistromath/gr-ais
754C is correct. What hardware are you using? Are you sure you have a
line-of-sight view to ships?
On Fri, Apr 25, 2014 at 2:14 PM, Andy Walls a...@silverblocksystems.netwrote:
Hi.
What is the recommended gr-ais repo/branch/commit that yields a working
gr-ais with GnuRadio 3.7.x (git commit
Ettus X310.
No ship needed; I have a known good transponder connected through RF
cables and attenuators to the X310. :)
I can send AIS text and safety messages on demand, and the transponder
will out its own position messages every 3 minutes since it is
stationary.
Regards,
Andy
On Fri,
I have my new x300's. The NI ExpressCard-8360B is recognized by my Intel
5, Lenovo, 64 bit machine running U 14.04 LTS.
I naively assumed that given the way things had gone before, that this
would be a low impact out of the box experience. uhd_find_devices finds
nothing.
So I go and dig and
You are using ubuntu 14.4 which has a new kernel. It will take us a
little while to get our kernel module working with it. In the mean time,
going to an older kernel or distribution will fix it. This does not
affect ethernet connections.
Matt
On Apr 25, 2014 11:38 PM, Robert McGwier
Thanks for suggestions of Vanush, Marcus, and Tom. I am happy to report
that I was able to reduced the wasted samples from about 30k to about 1.5k.
Here's what I tried:
(1) #define GR_FIXED_BUFFER_SIZE 2048 in flat_flowgraph.cc. This gave me
the result reported above. The down side of this
Hi all,
Is it possible to make a GUI in GRC as we can do in MATLAB??
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
35 matches
Mail list logo
