50:fa brd ff:ff:ff:ff:ff:ff
Karthik
On Wed, Oct 23, 2019 at 7:20 PM Marcus D. Leech
wrote:
> On 10/23/2019 04:56 PM, Karthik Vasudeva wrote:
> > Hi All,
> >
> > We are planning to set up USRP N310 for streaming in host mode using
> > SFP0 port. Currently we are n
: n3xx
Please help and let us know if anything is missing.
Karthik
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> Traceback (most recent call last):
> File "/home/kurt/gnuradio/grc/wav_file_to_speaker.py", line 17, in
>
> import howto
> ImportError: No module named howto
>
> *
> Where I need help is that I don't know how to set up python and/or
ke. I have loaded
variables from .mat files (filter taps etc) previously, but never used them
as sources so that part is something you will have test.
from gnuradio import gr
from scipy.io import loadmat
variablelist = loadmat('/path/matfile.mat')
var1 = variablelist['var1name'
.
Hope that helps.
Regards,
Karthik
On Tue, Mar 9, 2010 at 10:33 PM, dan s wrote:
> Hi all,
>
> I am looking to simultaneously record two real signals (not with IQ) using
> a single LFRX daughtercard.
>
> How can I do this with GNURadio companion? I have spent a while loo
2. Increasing fusb_nblocks and fusb_block_size. fusb_nblocks = 4096 and
fusb_block_size=4096 seemed to work for me.
3. Remounting my etx3 harddisk as ext2.
Hope this helps.
Karthik
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The wiki index is a useful resource http://gnuradio.org/trac/wiki/TitleIndex
Karthik
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tio)". I always thought for a block named interpolator a
value of interpolation_ratio > 1 would be understood as increasing the
sampling rate by that factor. Is this not correct?
Karthik
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http
or a bit. When using
gnuradio I also added audio_module = audio_jack to the gnuradio config.conf
file.
Karthik
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, line 49, in __init__
src = audio.source (sample_rate, options.audio_input)
File "/usr/local/lib/python2.5/site-packages/gnuradio/audio_oss.py", line
299, in source
return _audio_oss.source(*args, **kwargs)
RuntimeError: audio_oss_source
he filter design toolbox in matlab to design one. Here is an
example from Matlab
http://www.mathworks.com/products/filterdesign/demos.html?file=/products/demos/shipping/filterdesign/ddcfilterchaindemo.html
Hope that helps.
Karthik
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into a new complex stream (similarly for channel
>> 2 and 3 etc) to get 4 complex streams?
>>
>
> does the usrp_s/c answer clear this up for you?
>
> -Josh
>
Thanks Josh,
That clears things up for me.
Regards,
Karthik
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On Wed, May 27, 2009 at 11:35 PM, Karthik wrote:
> On Wed, May 27, 2009 at 9:18 PM, Firas Abbas wrote:
>>
>> Hi,
>>
>>> On Wed, 5/27/09, Karthik wrote:
>>>
>>> If you use usrp_c() source, then the real part of the complex values are
>>>
On Wed, May 27, 2009 at 9:18 PM, Firas Abbas wrote:
>
> Hi,
>
>> On Wed, 5/27/09, Karthik wrote:
>>
>> If you use usrp_c() source, then the real part of the complex values are the
>> I values and the imaginary parts are Q values. They are each 16 bits.
>>
Q0,I0,Q0 or
> a sum: (I + Q)?
> If these are in the form of I0,Q0 ... then how do we keep a track that which
> one is an I and which one is a Q?
If you use usrp_c() source, then the real part of the complex values
are the I values and the imaginary parts are Q val
amount of data lost per overrun?
2. Is there any way to know where exactly each of the overruns occurred?
Thanks
Karthik
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Hi,
I think the gr_delay.xml should use gr.skiphead(int delay). Right now
it uses gr.head(int delay) which just copies "delay" samples and
signals done.
Regards,
Karthik
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http://lis
7;
> to ensure the system locations are devoid of any GNU Radio
> libraries/header files, the start from scratch with the bootstrap
> step?
>
> Johnathan
>
Thanks, that worked!
Karthik
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On Fri, Apr 17, 2009 at 7:25 PM, Eric Blossom wrote:
> On Fri, Apr 17, 2009 at 07:04:25PM -0700, Karthik wrote:
>> On Tue, Apr 14, 2009 at 3:23 PM, Johnathan Corgan
>> wrote:
>> > GNU Radio 3.2 release candidate 2 is now available for download and
>> > testi
ailable and the
daughterboard ID since I didn't have the BASIC_RX. Here is the major
change that I found.
The value of len(self.subdev) = 4 in 3.1.3 and =6 in 3.2rc2.
Shouldn't this be 4 as it was previously?
Regards,
Karthik
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>
>
> On Sat, Mar 28, 2009 at 9:27 AM, Karthik wrote:
>
>> 2009/3/27 Mikhail Tadjikov
>>
>> Hello,
>>>
>>> I'm trying to build several signal processing blocks for a project that
>>> I'm doing using USRP2. I was going through t
s_make_weighted_avg_ff(unsigned int)’
> cores.cc:4326: error: at this point in file
> make[4]: *** [cores.lo] Error 1
>
> Any help would be greatly appreciated.
With gr_sync_block you only need to write work() and not general_work(). The
example at the end of this tutorial will be hel
SRP2
as well, most likely it does. This thread has the discussion and how it was
solved.
http://lists.gnu.org/archive/html/discuss-gnuradio/2008-10/msg00465.html
Karthik
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ar, so the same
rules for safety apply. I have used 2V pk-pk voltages as input from a signal
with a source impedance of 50 ohms without any problems. If your source
doesn't have a 50 ohm source impedance, the DC voltage will be incorrect by
about 106mV (there are some threa
self.rx_src.set_mux(gru.hexint(0xf3f2f1f0)) #Sets all Q to zero
deinterleaver_usrp = gr.deinterleave(gr.sizeof_gr_complex)
self.connect(self.rx_src,skip_head_0,deinterleaver_usrp)
Real [(deinterleaver_usrp,0)] --> SideAA
Real [(deinterleaver_usrp,1)] --> SideAB
Real [(deinterleaver_usrp,2)] -
ments. The actual
period of the waveform coming out of the USRP will depend on the length of
the sequence and what your interpolation setting is. However, that is
something that you can work out.
Karthik
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uld attach a file sink and look at the output in matlab or octave. The
codes for opening them are gnuradio-core/src/utils directory.
Karthik
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Try the following:
usrp_wfm_rcv.py -f 104.5 -O plughw:0,0
Karthik
On Wed, Jan 28, 2009 at 3:16 PM, Bari Bari wrote:
> Thanks for ur guadiance I ahave already installed GNUradio on ubuntu 8.1
> from Synaptic packages manager but I am not sure either any module or
> library is missi
http://gnuradio.org/trac/wiki/Tutorials/WritePythonApplications
On Wed, Jan 14, 2009 at 1:24 PM, bari wrote:
>
> I have installed gnuradio on ubuntu 8.04. I have to connect usrp with it.
> can
> any body tell me about how i test in simple way that it is working.I am new
> one to gnuradio and lin
package since it is a
pre-requisite for installing gnuradio,
http://www.gnu.org/software/gsl/
Karthik
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though not to a very high temperature.
> I feel unplugging them frequently is a little unpleasant to me and hence
> this strange question.
>
> Your thoughts.
>
> Thanks
> Ali
Don't know about others, but I have my usrp on 24x7 for the past 3-4
months and I am
generator with a 50ohm
output impedance directly to the LFRX or through the opamp buffer and
sending in a known voltage.
Karthik
On Thu, Nov 20, 2008 at 6:17 PM, dan s <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I'm trying to figure out an impedance problem with my USRP/LFRX system. I
rg/trac/wiki/Octave
You can use the same files and modify a little bit to use with matlab
as well
Karthik
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ass ju_mpsk_receiver_cc : public gr_block
> {
> private:
> ju_mpsk_receiver_cc ();
> };
>
>
> What can I do to get gnuradio to recognize ju.mpsk_receiver_cc in
> addition to ju?
>
> Thanks
> Jason
>
Based on other blocks that I have seen shouldn't t
binary file which
contains raw data from the input without any header, so you can use a
function like fopen() and fread() to read the contents of the file.
Karthik
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source. Choose 32bit
> floats for real data, write real,imag,real,imag,... for complex data.
> The MATLAB manual is your friend. ;)
>
or you can use one of the programs in
gnuradio-core/src/utils/write_float_binary.m etc
Karthik
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om matlab or octave where you can resave them in a format that
you want.
Karthik
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ff ();" to "randsig_source_ff_sptr
> randsig_make_source_ff (double sampling_freq);", and "randsig_source_ff
> ();"
> to "randsig_source_ff (double sampling_freq);"
>
> The same error messages are present.
>
>
>
> Karthik Vijayraghavan wr
need to
include your .h file in Makefile.am if I am not mistaken.
In randsig.i you need to have something like
#include "randsig_source_ff.h"
GR_SWIG_BLOCK_MAGIC(randsig,source_ff);
randsig_source_ff_sptr randsig_make_source_ff(double sampling_freq);
cuit voltage of 106mV between the inputs of all the
> ADCs. Is this variable offset due to some registers not getting cleared when
> a program finishes running?
>
> Thanks,
> Karthik
After measure the signal offset I adjusted the adc offset from python till
need this dependency, "guile". If you are using Ubuntu then you can
install it from Synaptic.
Regards,
Karthik
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On Wed, Oct 29, 2008 at 3:55 AM, Eric Blossom <[EMAIL PROTECTED]> wrote:
> On Wed, Oct 29, 2008 at 03:41:19AM -0700, Karthik Vijayraghavan wrote:
> > I am trying to use the LFRX daughterboard to record very low frequency
> > signals in the range of ~DC to about 10Hz. To te
for my problem. Any hints/directions would be greatly
appreciated. I have spent quite a bit of time on this can't figure out the
problem.
Karthik
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and then
"watch" the outputs' sample by sample and do this ? Alternatively a
faster way is to can I create a 2D array in python and pass it by
reference to my block, so that the job of updating the 2D array is
left to my block.
Karthik
__
er with Linux, but still need
> 'baby step' instructions.
>
>
>
> Matt
check for the file /sbin/ldconfig. You need to run it as root or
administrator. It is possible that OpenSUSE doesn't install the sudo
package by default which may be why you are getting the command not
found error.
Karthik
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after doing "make install" try a sudo /sbin/ldconfig
Karthik
On Mon, Oct 13, 2008 at 12:00 PM, Eric Blossom <[EMAIL PROTECTED]> wrote:
> On Mon, Oct 13, 2008 at 11:45:43AM -0700, brandie wrote:
>>
>> I have the same problem in 3.1.3.
>> I can see all thes
not appear to be any errors with the
> installations of gnuradio or boost. All tests passed when I ran make
> check.
>
> Does anyone have any suggestions?
>
> Thank you,
> Kyle
try "sudo /sbin/ldconfig"
Karthik
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Explicitly adding the typedef definition to the .i file solved the problem.
Karthik
On Sun, Oct 5, 2008 at 1:39 AM, Karthik Vijayraghavan
<[EMAIL PROTECTED]> wrote:
> This is probably more of a swig question. While writing my own block,
> I have a couple of typedefs which I store i
Thanks ... that worked!
Karthik
On Fri, Oct 3, 2008 at 10:25 PM, Josh Blum <[EMAIL PROTECTED]> wrote:
> #1st attempt at a guide to this
>
> http://gnuradio.org/trac/wiki/GNURadioCompanion#AddingCustomBlocks
>
> Karthik Vijayraghavan wrote:
>>
>> I installed gnur
like
%{
#include "myblock.h"
#include "mytypedefs.h"
%}
But this doesn't seem to help. Any pointer?
Karthik
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You need to have the "dev" packages for the dependencies. Do you have them?
Karthik
On Thu, Oct 2, 2008 at 6:54 PM, Prasant Misra
<[EMAIL PROTECTED]> wrote:
>
> I downloaded the tarball gnuradio-3.1.3.
>
> When I run the ./configure, I get the error message:
>
?
Thanks,
Karthik
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On Sun, Sep 28, 2008 at 11:22 AM, Richard Jaeger
<[EMAIL PROTECTED]> wrote:
> Karthik:
>
> Here are some code segments that I borrowed and put together from
> several of the gnu-radio examples.
>
> #Complex Multiply Block
>
> self.mc_2 = gr.multiply_const_cc(gai
have to somehow "destroy" or "clear" the existing block
before defining another block with the same name?
Karthik
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ay to detect end of a
stream of samples from within the block, so that I can terminate my
block when I get that condition.
Thanks,
Karthik
--
www.stanford.edu/~karthikv
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rly for the other channel. make sure you have "import fftsink2"
at the top as well. Here is a link to the file that works for me
http://www.stanford.edu/~karthikv/multichannel.py
Karthik
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re using RXA then you might want to replace
the mux value by something like 0xf3f2f1f0.
Regards,
Karthik
--
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by usrp.sink*/source
>
> Eric
This might help you better understand the connections between various
components. http://www.nd.edu/~jnl/sdr/docs/
Karthik
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ta or is the data written to disk
through the USB every time?
Thanks!
Karthik
<http://www.stanford.edu/%7Ekarthikv>
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load a special FPGA image file, the details of which are
shown in the example. However for getting only 2 signals the standard
FGPA config is good enough (there is an earlier post on this somewhere
in the archive). Maybe others can correct me if I am wrong.
Karthik
On Feb 11, 2008 9:05 PM, Jason
Ah this is exactly what I have been grappling with as well. Basically
you need to set the MUX _such that_ you can access the two setting
simultaneously. If you have the gnuradio source you, look at the file
gnuradio-examples/multi-antenna/multi_scope.py
For more than one signal, you can no longer
o go ahead and
install the "-dev" packages for all the dependencies using synaptic. In your
case it will be "python-numpy-dev" and "libboost-dev".
Hope that helps.
Karthik
> Message: 1
> Date: Sat, 2 Feb 2008 01:26:34 +0800
> From: "JackyYang" <
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