First of all, it is normal that the USRP is not detected anymore with the uhd
tools when it is claimed by OpenBTS. So this looks not alarming.
Are you able to verify if RF is transmitted? Is there some spectrum analyzer
available, or a receiver that can tune into the used GSM frequency, best
Hi Tom,
I have tried reducing the signal level. The signal level at the input is
now -40dBm. Still there is this ramp behaviour.
I also get this when I use the B210 in loopback mode (with a 30dB
atttenuator in the loop). Also I have observed that
the lower the master clock rate that I set, the le
Hi all,
I have recently installed OpenBTS-2.8 on a Banana-Pi (Processor: ARMv7)
board for USRP N210 functioning. All the prerequisites including GNURadio,
UHD were successfully built on the board prior to OpenBTS installation.
With all configurations done, still there is a problem in the USRP
conn
Ron, thanks, adding that line fixed the compilation error and gnuradio says
that it installed ok!
Now onto the other issues:
NEW ISSUE - no GRC??. I can't call it from the target, home or pybombs
directory and there's no recipe for it. any thoughts?
OLD ISSUE - protobuf is still the old version and
Thanks. I'm having trouble recreating the error so I think I want to take
this back. I don't see a difference anymore between buffered and
unbuffered. I had multiple instances of gr open and running when I noticed
the difference. Call it a fluke.
Rich
On Mon, Mar 23, 2015 at 5:50 PM, Marcus D. Le
On 03/23/2015 08:27 PM, Richard Bell wrote:
I noticed a large difference in errors between input and output files
when I turn unbuffered on and off.
With unbuffered on, there was no difference between my input and
output file.
With unbuffered off, there were a lot of small errors that were
I noticed a large difference in errors between input and output files when
I turn unbuffered on and off.
With unbuffered on, there was no difference between my input and output
file.
With unbuffered off, there were a lot of small errors that were introduced
to the output file.
Is this a known is
Hi Arjun,
On Fri, Mar 20, 2015 at 11:15 PM, Arjun Nadh via USRP-users
wrote:
> On observing the received samples, there is a periodic " ramp " on the
> received sample. Attaching the plot. I do not observe this effect while
> using N210. Also I do not observe this if I use the internal clock.
Ca
The first error can be repaired by adding the line:
#include
to gnuradio/gr-dtv/lib/atsc/atsc_interleaver_impl.cc
I'm not sure how this bug slipped by.
Ron
On 03/23/2015 03:01 PM, ben Gee wrote:
I've picked up some issues over the last month of trying to get a
working gnuradio pybombs insta
I appreciate the response. Before you wrote back I wanted to try a fresh
install because i wanted to confirm 100% that there were no conflicting
packages outside my pybombs environment. After i deleted my main pybombs
directory i tried to reinstall pybombs, uhd and gnuradio, but now gnuradio
won't
I've picked up some issues over the last month of trying to get a working
gnuradio pybombs install with the openlte and fosphor pybombs packages. Had
no idea it would be this difficult on a brand new system with a fresh OS
install and following all the instructions on the gnuradio site, but i
guess
You should easily be able to pass a basic_block sptr and then
dynamic-cast it in your block.
What you're trying to do is not recommended procedure, although I can
see how it's necessary at times. Can you tell us what you're trying to
do? We've been working on making the message ports more usef
Rich,
GRC has the worst ratio of people committing code (Seth is one of them)
to importance of the project. There is even an entire wiki page with a
GRC wishlist: http://gnuradio.org/redmine/projects/gnuradio/wiki/GRCroadmap
...and Sebastian (our main GRC guy) tracks even more stuff on the is
On Sun, Mar 22, 2015 at 6:29 PM, Vijay Galbaransingh wrote:
> Hi guys,
>
> Still stuck, but some relevant details have changed that may help answer my
> question. So I'm trying to implement a sink block for gnuradio-android that
> takes integers on its input (not chars as I had erroneously writte
Rich,
I have been working on a patch for the second feature you mentioned. It
is the 'ignore_blocks' branch on my github:
https://github.com/sdh11/gnuradio-wg-grc/tree/ignore_blocks
If you run GRC from that branch, pressing 'p' should treat the block as
a pass through block, and it will not
Hi all,
I'm looking into the possibility of passing the object from Python into a C++ out of tree module. In my module, I have:
controller_cc_impl::controller_cc_impl(gr::uhd::usrp_source::sptr usrp,
[...])
I get a TypeError when I instantiate the block. It seems like the object
created i
Hi all,
I wanted to pass a long two features that I wished existed.
I think it would be nice if every block in GRC came with a comment field. A
field for text that does nothing but allow users to add notes to help
others understand they're thinking when they set-up the parameters of the
block. It
All of the FOSDEM SDR talks are now online, I've updated the
presentations page:
http://gnuradio.org/redmine/projects/gnuradio/wiki/Presentations
M
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Yup, I actually deduced that using a Message Debug block to figure out
what it emits.
But not a lot of blocks currently accept async messages for handling
run-time parameters. For example, gr-osmosdr only supports
"conventional" setters.
On 2015-03-23 10:28, Tom Rondeau wrote:
> On Mon, Ma
On Mon, Mar 23, 2015 at 7:12 AM, wrote:
> Indeed, if one uses relative, rather than absolute frequencies in the Qt
> Frequency sink, everything is wonderful.
>
> But I think there are, as you observe, deeper questions about the desired
> semantics of async messages of this type.
>
> An advantage
On Mon, Mar 23, 2015 at 3:51 AM, Merry Dominic wrote:
> Sir,
>
> What do the number of taps in the CMA equalizer block represent, I hope it
> is the channel size. Should it be the number of tap coefficients given for
> the variable 'taps' in the channel model block. If I give 'taps' in the
> chan
Indeed, if one uses relative, rather than absolute frequencies in the Qt
Frequency sink, everything is wonderful.
But I think there are, as you observe, deeper questions about the
desired semantics of async messages of this type.
An advantage to the "sets a variable" implementation on the WX
Thanks, TOm.
Answer to my question.
gr::dvbt::reed_solomon d_rs(...) works.
No CMakeLists modification and other stuffs are needed.
Regards,
Jeon.
2015-03-20 22:36 GMT+09:00 Tom Rondeau :
> On Fri, Mar 20, 2015 at 4:07 AM, Jeon wrote:
>
>> In my out-of-tree module (in develop)
>>
>> I want t
Sir,
What do the number of taps in the CMA equalizer block represent, I hope it
is the channel size. Should it be the number of tap coefficients given for
the variable 'taps' in the channel model block. If I give 'taps' in the
channel model block (I am considering the basic awgn channel model bloc
Thanks Tom for your immediate response. I re-created the blocks in my module
and copied sources over from tagged_stream_to_pdu, which works not.
I cannot reproduce the described error anymore, which means the issue is solved
for me. The diff between old and new code does not show any differences
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