On Tue, 10 Nov 2015 22:03:42 -0300
John Coppens wrote:
> I'd like to have a go at debugging this, but due to gnuradio's size I have
> no real idea how to start. Can anyone give me a pointer?
>
Investigating a little, I found that the strange directory structure seems to
come from a call to 'se
tb.stop(), then tb.wait()
On Tue, Nov 10, 2015 at 6:39 PM, Richard Bell
wrote:
> I've written a python script that instantiates a top_block.py file (no
> GUI), sets the parameters, runs until 100 block errors are detected, stops
> the simulation and starts the process over with a new instantiati
I've written a python script that instantiates a top_block.py file (no
GUI), sets the parameters, runs until 100 block errors are detected, stops
the simulation and starts the process over with a new instantiation, etc..
The problem I have is that I randomly (as far as I can tell) have a problem
w
Hello all.
I've compiled and installed the last version on my home PC and on the notebook.
Both under Linux Slackware (mostly version 14.1, some updates to -current). Both
run gcc 4.9.x, Python 2.7.10. Both are AMD64 systems.
On the PC all is well, but on the notebook I have some strange issues w
Thanks Nathan, that was a great advice.
Since I use python, it's very easy when using the 'threading' module:
def start_timer(self):
self.timer = threading.Timer(seconds, self.callback) # Setup a Timer
thread
self.timer.start()
def callback():
# Do something if timeout
def msg_handler
I did the maths a while ago, and I'm confident the numbers are OK, but
it's always possible mistakes were made. Feel free to investigate. The
test cases would be a good place to go for confirmation.
Cheers,
Martin
On 09.11.2015 18:11, w xd wrote:
> Hi,
>
> Thank you so much.
>
> I hav
You can look at the message strobe block for inspiration; it's written
in C++ but the concepts translate.
M
On 10.11.2015 14:36, West, Nathan wrote:
> Spin off a thread inside your block that counts and calls the
> appropriate function. Boost bind might help abstract away a specific
> function.
>
I think it's more of a testament to how good Intel (and modern) processors
are at branching.
An adventurous soul is welcome to try putting that table lookup in to an
avx2 protokernel with the new gather instructions. I'll reward with beer
next time I see the author. If you write a generic table lo
Spin off a thread inside your block that counts and calls the appropriate
function. Boost bind might help abstract away a specific function.
On Tuesday, November 10, 2015, Roee Bar wrote:
> Hello,
>
> I have written a OOT module (in python) that receives and send PMT
> messages according to some
Hi Johannes, Hi xd,
complex_to_arg uses GNU Radio's fast_atan2f function, which is an
approximation [1].
Between the 255 values of the lookup table, it uses linear
interpolation, hence your 0.4 error factor.
As Johannes said, that's not really surprising for a look up table-based
approach.
I do t
Hello,
I have written a OOT module (in python) that receives and send PMT
messages according to some state machine.
However, I need a timer so that the block will transmit a message after
some timeout. I.e., if nothing happens for x seconds, a function is called.
Is there any built-in mecha
On Tue, Nov 10, 2015 at 12:45 PM, Marcus Müller
wrote:
> Hi Abhinav,
>
> sorry, I might just be tired right now, but I don't understand this
> sentence:
>
> On 10.11.2015 21:18, abhinav narain wrote:
> > I have now fallen to doing PPM where I map {0,1} bits to {101,11}
> > symbols on the transmit
Hi Abhinav,
sorry, I might just be tired right now, but I don't understand this
sentence:
On 10.11.2015 21:18, abhinav narain wrote:
> I have now fallen to doing PPM where I map {0,1} bits to {101,11}
> symbols on the transmitter side, where 0 in 101 is equivalent to x 1x1
> as I don't transmit a
Hi John,
There's some python embedded in the GRC xml.
The block is a python command: 'from gnuradio import analog'
The block is another python command: 'analog.wfm_rcv(...)' that
uses the analog module that was imported from gnuradio.
That python code can come from two places: native py
Hello, everyone, and I trust most of you will indulge a GRC newbie.
After reading some of the online Gnuradio docs, I'm puzzled by what's
inside building blocks that appear in the GRC block tree panel. If I
select "WBFM Receive" from the "Modulators" tab, for example, I know
this defined by t
I forgot to answer your DTV question. At this time, there is no GNU
Radio based receiver for DVB-S2 (or DVB-T2). One issue that stands in
the way is developing a software LDPC decoder with sufficient
performance (ideally, at least 50 Mbps for DVB-T2 and even more for DVB-S2).
Therefore, all th
hello volker
thank you ,i have solve the problem with you reply.
--Ekko
2015-11-06 0:35 GMT+08:00 Volker Schroer :
> First, if you run the generated top_block.py you see
>
> Traceback (most recent call last):
> File "./top_block.py", line 99, in
> tb = top_block()
> File "./top_block.py
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi,
Could you extend a test case for this block with Python? This might
reveal issues with the implementation more easily. Also, others might
benefit from it.
For your specific problem, I guess the GR block result is as close as
it gets for a LUT-base
Hi all,
Thank you very much in advance.
I find the result of the block "complex to Arg" is same to the
result in matlab most of the time,while sometimes the results is different
from the result in matlab.
For example,
a=1.646236600879293e+03 + 8.043715071772
Hi Abhinav,
I must admit that I completely lost track of this; could you maybe
really do a sketch of what your trying to transmit something like:
x = 0-filling sample
1 = data 1
0 = data 0
xx1xx0xx0xx0xx1
or so?
Best regards,
Marcus
On 10.11.2015 07:18, abhinav narain wrote:
> Hi Marcus, othe
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