Hi All, i have problem with USRP2 & Gnuradio.
i'm creating a adaptive filtering gnu radio block which receives a number of
samples ( 2channel , usally 400,000 ) and process them in order to removing
static clutters from the sampled signals.
the problem is here, the block is very slow, it take
On 07/24/2013 12:46 PM, Nemanja Savic wrote:
> After some time I maybe realized how this thing works, but I don't know jow
> to call correctly methods from dboard_iface:
>
> def get_pin_ctrl(self, *args, **kwargs):
> """get_pin_ctrl(self, unit_t unit) -> boost::uint16_t"""
> retu
Hi,
thank you Josh. Yesterday late I figured out almost everything. I suppose
everything would be faster with a little bit more documentation.
So, I have USRP1 with wbx, lftx and lfrx.
There is one doubt now. When I set USRP source to wbx and after that read
register for setting direction of the p
On 07/24/2013 08:25 PM, yeran wrote:
> Hi all,
> I am trying to study STBC using USRP2 and have some questions about how to
> use mimo cable.
>
> I followed the instruction on ettus but i dont understand 'Configuring the
> slave' part
> http://files.ettus.com/uhd_docs/manual/html/usrp2.html#u
Hi,
I got the source code of gras using git,and I followed the instruction
to install gras.But I got errors while making.
/home/zg/Desktop/Codes/gras/gras/Theron/Include/External/boost/atomic/detail/gcc-x86.hpp:
In function ‘void boost::atomic_thread_fence(boost::memory_order)’:
/home/zg/Deskt
On 07/25/2013 04:51 AM, Gong Zhang wrote:
> Hi,
> I got the source code of gras using git,and I followed the instruction
> to install gras.But I got errors while making.
>
> /home/zg/Desktop/Codes/gras/gras/Theron/Include/External/boost/atomic/detail/gcc-x86.hpp:
> In function ‘void boost::atomi
Hello, I am pretty new to gnu radio, trying to learn it asap and start
developing apps. I am very interested in it.
When i try to execute the usrp wfm receive python file i get the following
error.
Traceback (most recent call last):
File "./usrp_wfm_rcv.py", line 25, in
from gnuradio.wxgui
Greetings,
Yesterday, I started playing with pybombs and fixed a few recipes
related to gr-osmosdr. During this process I made gr-osmosdr depend on
uhd, rtl-sdr, osmo-sdr, hackrf and gr-iqbal. I did this to ensure that
all supported input devices are made available to users. It should be
noted tha
Hello everyone,
On the the GNU scope sink, I have a signal peak of 0.3 counts, to how many
volts does this correspond? I have read that it corresponds to 1 full scale ADC
but wasn't successful in finding the latter.
Any help with this please?
Thanks.
Dear all,
I have tested the file souce and file sink in grc:
file source-- throttle--- file sink
The source file is a mp3 file withe the size 3.615.346 bytes
The sink file is smaller (unbuffered off): 3.612.672 bytes
The sink file (unbuffered on ) is also smaller 3.615.344 bytes.
The files should
Hi guys,
Thanks in advance.
Since freq. offset is time related, like exp(2pi * fΔ * t), how can I
generate freq. offset in gnuradio?
Normally, freq. offset exists due to mismatched oscillators between
transmitter and receiver.
Is that possible get the same freq. offset effect mentioned above, mer
>>So far, I have install jack, changed my audio_module to jack and created
a sine wave flowing to an audio_sink.
When I execute the flow graph, nothing happens. (Is this expected?)
How can I capture this audio using VLC?
U can use GR UDP/TCP sink to send the audio samples from GNU Radio to VLC
o
Kay,
Freq offset can be added by multiplying the baseband data with
complex-exponential. In GR this can be done by any of the following ways
1. Sine Source and Multiply block or
2. Freq Translating FIR Filter
3. Channel Model
-Adeel
On Thu, Jul 25, 2013 at 8:26 PM, Yingjie Chen wrote:
> Hi
for index = 1:PacketLength
PacketWithFreqOffset(index) =
Packet(index)*exp(i*2*pi*fΔ*SampleRate*index);
end
So is above implementation in matlab similar to that in Gnuradio?
No. GNURadio implementation resembles Simulink instead of Matlab. Just
think how can u add freq-offset in Simulink and
Hi Adeel,
Thanks for your prompt reply!
I don't quite understand your last email. If I want to test the performance of
transmission under different power allocation. What should I do? Can you please
be more specific about this?
Currently, what I'm doing is keep the tx-amplitude 0.2, and change
Hi
Thanks for the suggestion.
I could burn the images finally after renaming the file to
u2plus_usrp_n200_r4_fpga.bin and using ./usrp_n2xx_net_burner_gui.py
--dont-check-rev
(It was showing error even with u2plus_r4.bin or u2plus_n200_r4.bin)
Amy
On 07/24/2013 12:48 PM, Amy Kumar wrote:
Hi,
I've been trying out pybombs for building the latest gnuradio. I had a
successful build at home last week, but I am having repeated failures in a
test environment VM (virtualbox, ubuntu 12.04 x64).
I am running the build like this: sudo ./pybombs install gnuradio
Here's the relevant part of
It appears that your error is not with pybombs but with building gnuradio.
Can you post a bit more of the compile log?
Tim
On Thu, Jul 25, 2013 at 12:36 PM, Dan CaJacob wrote:
> Hi,
>
> I've been trying out pybombs for building the latest gnuradio. I had a
> successful build at home last wee
Dear all,
I checked your latest submission of "usrp_spectrum_sense.py" and I don't
understand why there is a division of the value of each bin by the sampling
rate. Also I don't understand why there is a subtraction of the noise
floor from the power db value to calculate an actual db value.
Kind
Hi,
I would like to use the N210 LFTX daughterboard to transmit bi-phase
modulated signal. The phase switching need to be done accurately in a
real-time sense, that is, the switching times has to be as accurate as
possible, which means it should be controlled by the master clock of the
N210.
Dear gnuradio-enthousiasts:
I get the folowing error-message from gnuradio when I use the WX GUI Scope from
the WX Gui Widgets:
°?X?\lonneke\AppData\Roaming\.gnuradio\prefs\gr_vmcircbuf_default_factoryC:\Program
Files (x86)\gnuradio\lib\site-packages\gnuradio\grc\gui\Dialogs.py:36:
GtkWarning:
Hi,
I am doing testing with UHD source block set to a frequency at the center of
my band of interest. Previous testing with LO set to DC works very well. The
spectrum at the band of interest looks nice and flat. The new configuration
with the new LO and a lower sampling rate (just to cover the
>>Currently, what I'm doing is keep the tx-amplitude 0.2, and change the
gain from 35 to 65. You mean in this range, the power is not liner to gain
change, right? If so, is there any way to control or influence the power
change?
I was mentioning about the that total Tx-Power. U can control Tx-power
>>Thanks again. I am not familiar with simulink. U mean we can visually
program in GR using signal Block or widget instead of writing all code
directly?
Yes
On Thu, Jul 25, 2013 at 9:04 PM, Yingjie Chen wrote:
> Thanks again. I am not familiar with simulink. U mean we can visually
> program in
Sorry for the incomplete information. I'm using Ubuntu 10.04 and the
boost version is 1.40
2013/7/25 Josh Blum :
>
>
> On 07/25/2013 04:51 AM, Gong Zhang wrote:
>> Hi,
>> I got the source code of gras using git,and I followed the instruction
>> to install gras.But I got errors while making.
>>
>>
On 07/25/2013 10:03 PM, Gong Zhang wrote:
> Sorry for the incomplete information. I'm using Ubuntu 10.04 and the
> boost version is 1.40
>
So heres the deal. Boost 1.40 does not support the property tree.
Property tree was introduced in 1.41: http://www.boost.org/doc/libs/1_41_0/
Anyway, what
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