On Fri, Jul 3, 2009 at 1:05 PM, John Gilmore wrote:
> > gr-audio-oss and gr-audio-jack. The sound module being used is
> > snd_hda_intel.
>
> In my experience, there seem to be endless permutations of problems
> with snd_hda_intel ("HD Audio"). Even in newer Linux releases like
> Ubuntu 9.04. I
I am trying to run the audio_to_file.py example file to capture some audio
signals. I plan to feed some slowly changing voltage signals through my
mic/line in audio input and use those along with the USRP signals (after
doing the necessary fractional resampling). I tried running the example with
t
I am using a USRP1 to digitize 4 channels of data at a decimation of
32 using 2 LFRX. My computer can keep up with the digitizing for the
most part but I get a relatively small number of overruns as well. I
am using the trunk rev 10882 with default values for the fusb
parameters.
1. What is the am
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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> checking for GSL... no
> gnuradio-core requires package gsl, not found.
> Not building component gnuradio-core.
> .
> .
> .
>
> I am using fedora 6. Any guidance or comments will be appreciated.
>
> Changkyu Seol
You need the GNU scientific library "gsl" package since it is a
pre-requisite for i
On Thu, Nov 27, 2008 at 3:47 PM, Mir Ali <[EMAIL PROTECTED]> wrote:
> Hi friends,
>
> Can anyone tell me how durable the USRPs are? Can I put them ON for hours
> without worrying about damaging them in the process. I observed that the
> daughter boards heat up after a while though not to a very hig
What is the output impedance of your preamplifier? I do similar data
acquisition with the LFRX and I pass my signals through an op-amp
buffer and through a 50ohm series resistor at the output so I get a
gain of 0.5. That has always worked for me.
You could test this out by hooking up a signal gene
On Wed, Nov 19, 2008 at 6:35 PM, Anand Gudimanchi
<[EMAIL PROTECTED]> wrote:
> Hello Experts,
>
> I am a beginner just to seek answers more from basics. Worse i am new to
> Python and RF. So please can someone help me where to look for the signals
> coming and out and where to look for documentatio
On Wed, Nov 19, 2008 at 10:08 AM, Jason Uher <[EMAIL PROTECTED]> wrote:
> Hey all,
>
> I have written my own blocks in the past following the instructions
> at http://www.gnu.org/software/gnuradio/doc/howto-write-a-block.html
> and had success. However, today I am trying to implement a copy of
>
On Mon, Nov 10, 2008 at 4:04 PM, Mayank Goel <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I am confused about how to access the data that is present in the sink. I
> mean that I need to send the sink data into some other component and need to
> access all the contents.
>
> How can I do that?
>
> Thanks
>
On Fri, Nov 7, 2008 at 3:58 AM, Jorg Lotze <[EMAIL PROTECTED]> wrote:
> On Fri, 2008-11-07 at 02:06 -0800, slimchao wrote:
> > Hallo Everyone,
> >
> > I have generated some samples of a sinesoid from Matlab and want to
> convert
> > it to a binary file and use it as a source signal to the LFTX
> d
On Fri, Nov 7, 2008 at 6:21 AM, Bruhtesfa Godana <[EMAIL PROTECTED]> wrote:
> Hey slimchao,
>
> Thanks for the reply! I tried gr.file_sink().
> It writes something in a txt file, but when I open it it is not in readable
> format.
> Is there something that I can do to make it a readable .txt forma
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
On Fri, Oct 31, 2008 at 6:16 PM, Francesco B. <[EMAIL PROTECTED]> wrote:
>
> Excellent! I've now got ./bootstrap functioning properly, and have narrowed
> the error messages down to two in make, one of which seems like it may have
> been triggered by the other:
>
> randsig_source_ff.h: In function
> Thanks, that worked! For archival purposes here is the piece of code that
> worked for me. It disables the DC offset correction from all 4 ADCs
>
> self.rx_src = usrp.source_c()
> self.rx_src.set_dc_offset_cl_enable(int(0),int(15))
>
> I hooked up a 2Hz sine wave with no DC offset to the USRP and
>
> --here are few lines from the run of
> the
>
> command---
> Component usrp requires guile, which was not found.
>
You need this dependency, "
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
I am trying to use the LFRX daughterboard to record very low frequency
signals in the range of ~DC to about 10Hz. To test this I hooked up a
function generator to the USRP with an output impedance of 50 ohm. Since I
wanted to get 4 channels simultaneously I loaded the "std_4rx_0tx.rbf" image
and lo
I am working on am imaging application where I get 3 inputs. A
raw_signal which I need to image, an X signal and a Y signal. The X
and Y signals tell me where I need to plot the signal that I receive.
They correspond to voltages of a raster scanning system. The
raw_signal goes into my block and bec
On Fri, Oct 17, 2008 at 9:07 PM, ML <[EMAIL PROTECTED]> wrote:
> Hi there...
>
>
>
> I have this error appear when I try to run any examples:
>
>
>
> Traceback (most recent call last):
>
> File "./dial_tone.py", line 23, in
>
> from gnuradio import g
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 these files but can not link the lib in C++.
>
On Tue, Oct 7, 2008 at 3:01 PM, Kyle Pearson
<[EMAIL PROTECTED]> wrote:
> I downloaded rev. 9728 from the svn today and after installing it when
> I tried to run find_usrps I got the following error:
>
> find_usrps: error while loading shared libraries: libusrp2.so.0:
> cannot open shared object fi
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
This is probably more of a swig question. While writing my own block,
I have a couple of typedefs which I store in a separate .h file and
include in the code for my block. What should I do to be able to
access these types from within python? I have tried including the .h
files in the swig .i files
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:
>
> configure: error: cannot find usab
I installed gnuradio from the trunk for using grc which is now bundled
with gnuradio. I am trying to add my own block to the list of blocks
that are available in grc. I saw a list of templates in
gnuradio/grc/data/platforms/python/blocks/ . There are a whole bunch
of block-templates there and I thi
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(gain_2)
> .
> .
>
> #Gain Control Slider
Suppose I have myblock = gr.multiply_const_ff(var_value) sitting
somewhere in my flowgraph. I want the user to be able to change the
value of var_value by using a slider. I know how to make a slider, but
I am not able to find information on how to dynamically change the
block at runtime. One option
Hi All,
I am trying to write a block which operates only if the number of
input samples is a multiple of some fixed number "M". In general_work
I have a statement
int k = (int) ninput_items[0]/M //number of samples in input stream
if (k<1) return 0;
When I do "return 0", I am assuming that this
On Thu, Apr 24, 2008 at 9:04 AM, George Nychis <[EMAIL PROTECTED]> wrote:
>
>
> Diana Iosifescu wrote:
>
> >
> fftsink.fft_sink_c(panel,title="ChRXB-A",fft_size=fftsize_N,sample_rate=rx_rate/sw_decim)
> > TypeError: __init__() takes at least 3 non-keyword arguments (2 given)
> > Exception exceptio
On Wed, Apr 23, 2008 at 5:38 AM, Diana Iosifescu <[EMAIL PROTECTED]> wrote:
> Hello,
> I am a student at the University of Aveiro, Portugal and I have just
> started working at a project with GNU Radio and the USRP board.
> I have a question regarding the sample acquisition.
> I need to read th
On Mon, Mar 17, 2008 at 9:07 PM, Eric Blossom <[EMAIL PROTECTED]> wrote:
> On Mon, Mar 17, 2008 at 08:59:54PM -0700, Bill Stevenson wrote:
> > Hello, everyone
> >
> > I dug up the wfm_rcv_gui.py example file in order to penetrate the
> > principle of GNURadio. But I have 2 questions about it:
> >
Hi,
I am trying to use the USRP and gnuradio as a data acquisition system for
feedback control of my physics experiments on atomic force microscopy (AFM).
I am using the LFRX and LFTX daughterboards for my system. The bandwidth
that I am interested is DC ~ 1-2 MHz. I'll be getting in 4 analog inp
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 which tells you how you
can look at 4
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
Hi,
I compiled gnuradio from source in Ubuntu 7.10 and I was having the same
problems as you until I realized that you need to install the development
packages for almost all the dependencies. There are some where you don't
need the -dev packages, but it doesn't hurt to install them. So go ahead a
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