Thank you for your fast response. If I only use USRP( not USRP2), this
should not be a problem, right? Since USRP has nothing to do with
eth0:socket
On Tue, Jan 26, 2010 at 11:32 AM, Johnathan Corgan <
jcor...@corganenterprises.com> wrote:
> On Tue, Jan 26, 2010 at 11:20, Milo Wo
Hey folks,
I followed the installation instructions on wiki page, however, I still met
"Operation not permitted" problem shown below even though I added the USRP
group and obtained the permission to access USRP. So far, benchmark_tx.py
works correctly, but I was wondering if this message is a crit
Hi all,
I use "sudo make install" to setup the gnuradio in ubuntu9.10. The problem
is that I have to use "sudo" every time to run an
application(./benchmark_tx.py). Without running as a super user, I will
receive the error msg like could not load the firmware to FPGA through USB,
permission denie
Hi all,
If I have two input streams at different sample rate(e.g. 44.1KS/s and
2MS/s) , what about the output rate if I multiply those input streams by
gr.multiply_ff() ? I know this question is kind of silly, but I really
need a little help from you guys.
Thank you,
Milo
__
Oh, There was a typo in my previous description: The sub-carrier freq I
set in SW is 4MHz not 2MHz
(i.e. 4MHz sub-carrier set in SW results in a 50KHz sub-carrier on
FFT.). Please let me know if you have any comments. Thank you.
Milo
Milo Wong wrote:
Hi folks,
I wrote a amplitude
Eric Blossom wrote:
On Wed, Sep 16, 2009 at 11:34:38AM -0700, Milo Wong wrote:
Hi folks,
I have implemented a multi sub-carriers AM transmitter and here I still
have a strange problem: I plotted the FFT of the modulated signal at
baseband (as attached) and the number of the bins (spikes
Hi All,
Here I have a couple of questions during my project:
1, I am receiving "uU"(usrp underrun) when I am transmitting, it seems
that the data rate I feed to DAC is less than 128MS/s? I've already set
the maximum interpolation rate at 512. What's the problem might be? I
guess the input dat
Hi all,
I was thinking about the ways of scaling the modulated complex(with
imag. part equals to 0) symbol to the range +/- 32767 which is accepted
by USRP. My idea is to find the output range (Min, Max) and first scale
to range(0, 65535) and then subtract by 32767 to drop in the range
(-3276
Hi all,
I was wondering why most of the gnuradio blocks don't have destructor
even though they have constructor defined in C++ source(e.g.
gr_ofdm_mapper_bcv.cc)? Is that due to the features of smart pointer,
boost::shared_ptr ?
Another question is : What is the difference between using
"cl
Hi Johnathan,
I solved it. What I mean is installing a new block I wrote by myself to
PYTHONPATH. Just "sudo make install" at top directory. Thank you :-)
Milo
On Wed, Sep 2, 2009 at 11:57 AM, Johnathan Corgan <
jcor...@corganenterprises.com> wrote:
> On Wed, Sep 2, 2009
Hi all,
My block finally works! But still I got a question about installing:
I found the following scripts in Makefile.am (in the same directory with .cc
.h .i files)
# Install so that they end up available as:
# import gnuradio.lpi
# This ends up at:
# ${prefix}/lib/python${python_version}
Hi All,
I was writing a new block and the "make" process of source files(.cc .h .i,
etc) was successful. However, when I "make check" to test the block, there's
an error message "Segmentation fault" coming out. I searched the previous
discussions but there were not too much useful information. I k
Hi all,
I am working on writing a new block(class). This block generates 4 streams
of sinusoid at different frequencies and each sinusoid is multiplied with
the 4 streams of float input respectively. The sinusoid are generated by
defining two struct type variables and do something with these two
Yu Gu,
Try to install from binary source for Unbuntu:
http://gnuradio.org/trac/wiki/DebianPackages
Thanks,
Milo
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Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Hi Colby,
Based on what you said, is that means, at Tx side, the encoded data stream
from encoder should also be loaded into gr.msg_queue() and applies
delete_head() funtion?
Thank you,
Milo
On Tue, Aug 25, 2009 at 8:08 PM, Colby Boyer wrote:
> Within the BBN RX side, all the processing block
Hi all,
If I have .cc .h .i and Makefile.am all ready, could I go back to the top
directory containing "configure" and make again(make from the top) instead
of using automake at src/lib directory in order to generate the make file?
Thank you,
Milo
On Fri, Aug 21, 2009 at 9:15 AM, Douglas Geig
oder.delete_head()
Thank you,
Milo
On Mon, Aug 24, 2009 at 11:33 AM, Johnathan Corgan <
jcor...@corganenterprises.com> wrote:
> Did you ever get this figured out?
>
> On Thu, Aug 20, 2009 at 11:00, Milo Wong wrote:
> > Hi all,
> >
> > I am worki
Hi all,
I am working on tx_voice.py and I got something I don't quite understand:
As I know that audio_rx samples from audio source and applies GSM encoding
with 33bit packages outputs, but there's no connection between txpath and
audio_rx. How could 33bits packages be sent to the transmit path? W
I see that. Thank you, Eric!
Milo
On Fri, Aug 14, 2009 at 10:57 AM, Eric Blossom wrote:
> On Thu, Aug 13, 2009 at 01:24:04PM -0700, Milo Wong wrote:
> > Hi,
> >
> > I have read Eric's "howto-write-a-signal-processing-block", but I still
> got
> >
Hi,
I have read Eric's "howto-write-a-signal-processing-block", but I still got
a question. Is there anyway I could find the python description of gr.*
modules(or functions). I browsed both "gnuradio-core/src/python/gnuradio/gr"
and "python2.6/dist-packages/gnuradio/gr", but I found nothing but se
Thank you so much for the detail reasoning which helped me a lot for
understanding. Thank you all!
Sincerely,
Milo
On Wed, Aug 12, 2009 at 11:27 AM, Johnathan Corgan <
jcor...@corganenterprises.com> wrote:
> On Wed, 2009-08-12 at 10:00 -0700, Milo Wong wrote:
>
> > I was
Thank you all! I've fixed this problem.
On Wed, Aug 12, 2009 at 12:13 AM, Jeff Brower wrote:
> Milo-
>
> > I found sine waves will be terribly distorted when they are generated at
> > relatively high frequency(above 5khz) from signal source in GRC. I set
> the
> > sampl_rate of scope sink to 2Ghz
Hi all,
I was wondering if there is anyway to obtain the binary output from audio
source in GRC. I need this bits information as modulating signal for ASK.
Since sound card digitized our analog voice signal to binary information in
16bits (suppose the sound card is 16bits), so I think it should be
ssage: 20
Date: Fri, 07 Aug 2009 18:19:12 -0500
From: Colin Stagner
Subject: Re: [Discuss-gnuradio] Questions about data type conversion
in GRC. (ADC, encoder)
To: discuss-gnuradio@gnu.org
Message-ID: <4a7cb670.3060...@gmail.com>
Content-Type: text/plain; charset=UTF-8
Milo Wong wrote:
Hi all,
Hope you guys had a great weekend. I have a question about the data type
between gnuradio blocks.
1)I used "stream to streams" block in GRC to de-multiplex the output of
audio source which type is float and drops in the range of (-1,+1), I was
wondering what is the type of data after "strea
for the help!
Milo
On Sat, Aug 8, 2009 at 5:41 PM, Umair Nasir wrote:
> Hi,
> without changing the whole usrp for recieving, try changing the usb cable
> only. I had this strange problem with the usb cable that it would transmit
> but not recieve.
>
>
> On Wed, Aug 5, 20
o ADC or encoder in
GRC which could properly convert float: -1~+1 to Byte: 00~FF. Is there any
way to achieve that?
Thank you,
Milo
On Thu, Aug 6, 2009 at 1:41 PM, Eric Blossom wrote:
> On Thu, Aug 06, 2009 at 12:39:15PM -0700, Milo Wong wrote:
> > Hi,
> >
> > I was brow
Hi,
I was browsing the GNU radio C++ API. Here I have a couple of questions
about the class reference of gr_sig_source_f. (Signal generator)
1) For the type of public member function waveform(), i.e. gr_waveform_t
waveform () const. Where can I refer to the definition of "gr_waveform_t"?
Is there
Hi All,
I got problems in running gnuradio-examples when I tested the USRP boards:
(Ubuntu9.04/gnuradio-3.2.2)
Example 1) OFDM_Tx&Rx
(../gnuradio-examples/python/ofd
Dear all,
I am reading over the manual of how-to-write-a-block. For the given example:
howto_square_ff. I followed the instructions to run the test driven program,
but after I input "$ make check" under directory
~/gr-howto-write-a-block/src/python, it said:
"make: *** No rule to make target `che
Hi all,
I am new to GNU radio. I know that GNU Radio applications are primarily
written in Python, while performance-critical signal processing path is
implemented in C++. Here I am a little bit confused. If I am going to create
a sinewave generating and processing block, Which language should I u
tx/rx roles, I need to power on/off to get them restart. What's the problems
might be?
Thanks,
Yuan
On Wed, Jul 29, 2009 at 1:46 PM, Tom Rondeau wrote:
> Milo Wong wrote:
>
>> Hi,
>>
>> I was doing a test using benchmark_ofdm_tx and rx to achieve the ofdm
>&
Hi,
I was doing a test using benchmark_ofdm_tx and rx to achieve the ofdm
communication between two USRPs. At first, both USRPs could transmit and
receive correctly. However, after swithing tx/rx part for a few times, one
USRP suddenly failed in receiving (still can transmit), no matter which host
Hi all,
I have a question about one of the examples in GNUradio 3.2.2 under
Ubuntu9.04. I tried to run usrp_nbfm_rcv.py to test the usrp board. However,
I met the following errors:
---
Using RX d'board A: Flex 2400 Rx MIMO B
len(rx_chan_c
Hi All,
I am new to GNU radio. Here I have an update problem when I was binary
installing GNU Radio packages. After I added those two lines in the
sources.list file, an error message came out when I use "sudo apt-get
update":
Failed to fetch http://gnuradio.org/ubuntu/dists/stable/main/source/Sou
Hi all,
I was trying to install GNU radio 3.2 in Ubuntu9.04. I followed the binary
installation instructions :http://gnuradio.org/trac/wiki/DebianPackages
I did update the source list which includes these two sources:
# deb http://gnuradio.org/ubuntu stable main
# deb-src http://gnuradio.org/ubuntu
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