On Fri, Mar 06, 2009 at 05:22:44PM -0800, Yong J. Chang wrote:
>
> Thank you Eric,
>
> But I still have a problem. I simply made two blocks.
>
> 1) First One
> gr_data_parser::gr_data_parser ()
> : gr_block ("gr_data_parser",
> gr_make_io_signature (1, 1, sizeof (gr_complex))
Thank you Eric,
But I still have a problem. I simply made two blocks.
1) First One
gr_data_parser::gr_data_parser ()
: gr_block ("gr_data_parser",
gr_make_io_signature (1, 1, sizeof (gr_complex)),
gr_make_io_signature (1, 2, sizeof (gr_complex)))
2) Seco
From: Tom Rondeau
To: Bill Stevenson
Cc: discuss-gnuradio@gnu.org
Sent: Friday, March 6, 2009 10:55:09 AM
Subject: Re: [Discuss-gnuradio] does the number of samples per symbol for the
dbpsk case really affect the PDR performance?
On Fri, Mar 6, 2009 at 9:3
Thanks for the tip regarding fork(). I'll use popen() instead. :)
Still need to deal with the file_sink issue, though... fork() was only an
idea for later. Will investigate this further.
~ Francesco
Eric Blossom wrote:
>
> On Thu, Mar 05, 2009 at 10:35:37PM -0800, Francesco B. wrote:
>>
>>
On Fri, Mar 06, 2009 at 11:03:28AM -0800, Yong J. Chang wrote:
>
> Hi all,
>
> Now I'm building some signaling blocks having dual output streams.
> But if I try to make dual output streams which have different data type from
> input stream, 'Segmentation fault' error is occurred. How can I make d
Hi all,
Now I'm building some signaling blocks having dual output streams.
But if I try to make dual output streams which have different data type from
input stream, 'Segmentation fault' error is occurred. How can I make dual
outputs which have different data type from input stream?
Thanks in ad
On Fri, Mar 06, 2009 at 03:09:54PM +0100, Mattias Kjellsson wrote:
> Hi list,
>
> I was browsing the c++ code in gr-usrp today, and found a strange thing
> in "flexrf_base.cc", line 337 to 349 in svn10524 (included below).
> ==
> flexrf_base_tx::gain_min()
> {
> return usrp()->pg
On Fri, Mar 06, 2009 at 11:59:13AM +, feldmaus wrote:
> Josh Blum joshknows.com> writes:
> > Simple source exists because actual usrp api is sooo crazy. The goal of
> > the simple source and simple sink is to provide the most useful options
> > to the usrp user.
>
> Thank you for your Reply
Jane Chen wrote:
Hi all,
I have several antennas.. I cannot distinguish between VERT900 and
VERT2450. There is no figure on the http://www.ettus.com/orderpage.html.
Does anyone know how I can know which antenna is VERT900 which I want to
connect to RFX1800?
Measure them with the 90 degr
On Thu, Mar 05, 2009 at 10:35:37PM -0800, Francesco B. wrote:
>
> Below is a short GNU Radio pipeline. Its purpose is to write an impulse
> response to a character device node representing an FPGA (which contains a
> 4-coefficient lowpass filter), read the FPGA's output, and store said output
> in
there seems to be a bug in the costas loop. As far as I understand, in case of
nonzero carrier offset, each incoming sample should be rotated with a linear
increasing phasor (assuming a constant offset). This is done with the
following code:
void
gr_mpsk_receiver_cc::mm_sampler(symbol) {
d_ph
On Thursday 05 March 2009 19:12:15 Eric Blossom wrote:
> On Thu, Mar 05, 2009 at 05:37:00PM +0100, Dimitris Symeonidis wrote:
> > Hi List,
> > I was reading through the dbpsk.py block in blks2impl, and found
> > something that doesn't seem to make much sense (to me).
> > Lines 272-273 read:
> >
On Fri, Mar 6, 2009 at 5:07 AM, Bishal Thapa wrote:
> Dear all,
> Please help me understand this output from usrp_rx_cfile.py. I have
> attached the plot as the jpeg at the end:
>
> 1. I send a file with 1500 bytes of spaces (Space = 0x20 = 0010 in
> binary)
> 2. I use usrp_rx_cfile.py to c
On Fri, Mar 6, 2009 at 9:38 AM, Bill Stevenson
wrote:
>
>
>
> From: Tom Rondeau
> To: Bill Stevenson
> Cc: discuss-gnuradio@gnu.org
> Sent: Thursday, March 5, 2009 11:30:33 PM
> Subject: Re: [Discuss-gnuradio] does the number of samples per symbol for
> the dbpsk
On Fri, Mar 6, 2009 at 9:38 AM, Bill Stevenson
wrote:
>
>
>
> From: Tom Rondeau
> To: Bill Stevenson
> Cc: discuss-gnuradio@gnu.org
> Sent: Thursday, March 5, 2009 11:30:33 PM
> Subject: Re: [Discuss-gnuradio] does the number of samples per symbol for
> the dbpsk
I am not sure about this but a similar problem is posted in this link.
http://www.mail-archive.com/bug-gu...@gnu.org/msg04660.html
I hope this works for you.
Ali
On Fri, Mar 6, 2009 at 9:06 AM, Paulo Benatto wrote:
> Hi list,
>
> I would like to install (compile) gnuradio in centos, but i hav
Hi list,
I would like to install (compile) gnuradio in centos, but i have a lite
problem, always i have the same error.
./configure --enable-all-components --disable-gr-audio-osx
--disable-gr-audio-windows --disable-gr-audio-oss --disable-gcell
--with-boost-libdir=/home/paulo.benatto/boost-1.36/
From: Tom Rondeau
To: Bill Stevenson
Cc: discuss-gnuradio@gnu.org
Sent: Thursday, March 5, 2009 11:30:33 PM
Subject: Re: [Discuss-gnuradio] does the number of samples per symbol for the
dbpsk case really affect the PDR performance?
Bill Stevenson wrote:
> H
Hi list,
I was browsing the c++ code in gr-usrp today, and found a strange thing
in "flexrf_base.cc", line 337 to 349 in svn10524 (included below).
==
flexrf_base_tx::gain_min()
{
return usrp()->pga_max();
}
float
flexrf_base_tx::gain_max()
{
return usrp()->pga_max();
}
Ashwin Raut ruby-forum.com> writes:
> ImportError: /usr/local/lib/python2.5/site-packages/gnuradio/_usrp1.so:
> undefined symbol: _ZN10usrp_basic22_write_fpga_reg_maskedEiii
Maybe the script doesn't work for you. There are some scripts which
are not really good programmed. Or you need some specia
Josh Blum joshknows.com> writes:
> Simple source exists because actual usrp api is sooo crazy. The goal of
> the simple source and simple sink is to provide the most useful options
> to the usrp user.
Thank you for your Reply.
Is it possible to make an offset so that i get the
right dB not dBF
Dear all,
Please help me understand this output from usrp_rx_cfile.py. I have
attached the plot as the jpeg at the end:
1. I send a file with 1500 bytes of spaces (Space = 0x20 = 0010 in
binary)
2. I use usrp_rx_cfile.py to capture the samples, and focus in on roughly
24600 samples (because
hi,
I want to use Rfx 400 and Rfx 2400 daughterboards on a usrp simultaneously
to receive data from another usrp which has the same daughterboards. The
transmit way use 2 daughterboard simultaneously is ok.
but in receiving path i got nothing but gr.fr_fir_ff:using sse. it does not
call the rx_ca
Hi all,
I have several antennas. I cannot distinguish between VERT900 and VERT2450.
There is no figure on the http://www.ettus.com/orderpage.html. Does anyone know
how I can know which antenna is VERT900 which I want to connect to RFX1800?
Thank you,
Jane
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