Hi all:
I know a packet in the example tx_ofdm.grc include a preamble,a
header,the payload and crc value.Recently I have used the UHD API to send
packet.And I want to know whether the tx_ofdm.grc add start_of_burst and
end_of_burst automatically.Namely,need I add start_of_burst at the b
Hello,
I was able to create a flowgraph in GRC to demodulate a signal
(low-frequency battery telegram of wireless microphones). Now I started
to port the generated code from Python to C++.
I had to realize that some blocks are Python-only, like the FM
Demodulator. I was able to rebuild the FM Demod
Hello Everyone
I am a new to gnuradio. I would like to do simulation of spectrum sensing
(Simple energy detector with single band only).
Normally I have seen "usrp_spectrum_sense.py". However, that is written for
USRP (and not easy to understand and modify it). Actually I have a difficulty
in
Good afternoon,
Disclaimer: New to everything related to GnuRadio.
Summary:
Receiving the following error: "fusb::_submit_urb: Cannot allocate memory"
Using GnuRadio with gnss-sdr source block and a WX GUI FFT Sink block (just
as a test to try to get hardware working). This is my first GnuRadio
There are rather a lot of ways to choke this particular cat, writing a
block is just one of them.
I do "control external device" things from within GRC without custom
blocks, using "helper code" and a polling function at a low rate
that drives a simple state machine. I use this for controll
http://gnuradio.org/doc/doxygen/page_python_blocks.html
$ git grep self.set_msg_handler **/*.py[19:20:26]
gr-blocks/python/blocks/qa_python_message_passing.py
M
On 07/29/2014 05:02 PM, Daniele Nicolodi wrote:
> On 29/07/2014 16:57, Martin Braun wrote:
>> Daniele,
>>
>> there's loads of blocks th
Aaron,
I recommend you read the FPGA sources. Also, the usrp-users mailing list
might be more useful for this kind of problem.
Cheers,
Martin
On 07/29/2014 05:56 PM, Aaron Henderson wrote:
> Marcus,
>
>
>
> Is there a link available where I can access this information, because,
> I will need
Max -
Thanks a bunch for the new P25-2 code.
I have been trying to figure out how to compile and use your new .py
modules to play audio, but I just don't know enuff Linux to get it done.
I did use the rtl_sdr app to do the capture and that worked. I have 180
MB of data.
But I need some gu
Marcus,
Is there a link available where I can access this information, because, I
will need this to extract the channels I need from the FPGA to further
filter the signal in GNU Radio.
Aaron
From: discuss-gnuradio-bounces+aaron.henderson=cosmicaes@gnu.org
[mailto:discuss-gnuradio-bounc
On 29/07/2014 16:57, Martin Braun wrote:
> Daniele,
>
> there's loads of blocks that use messages, as well as manual pages for
> that. And I would recommend you use them for this case. Create a block
> that talks to the serial port, and give it a message port.
Hello Martin,
thank for your answer
Daniele,
there's loads of blocks that use messages, as well as manual pages for
that. And I would recommend you use them for this case. Create a block
that talks to the serial port, and give it a message port.
M
On 07/29/2014 02:55 PM, Daniele Nicolodi wrote:
> Hello,
>
> I need to control a RF
I have a rational resampler which takes a lot of resources, but this worked so
far with realtime scheduling.
So No I didn’t change anything like this between the restarts. The only thing I
changed was the RF Frequency of the N210. I also switched back to the frequency
I had before which was work
Was the flow-graph changed between restarts?
One mistake new users of Gnu Radio make is to create filters that have
an impossibly-high number of taps, which become choke points
where they consume a lot of CPU, make hardly any progress, and all the
downstream blocks starve for samples.
On
On Tue, Jul 29, 2014 at 9:13 AM, Sabathy Mischa wrote:
> Dear All,
>
>
>
> I am running GNU Radio 3.7.3 on a Debian Wheezy System with XFCE Desktop.
>
> In the setup I have, a USRP N210 with a SBX daughterboard is used. The
> USRP samples at 25 MSPS and pretty big processing chain in GNU Radio t
On Tue, Jul 29, 2014 at 1:12 AM, Activecat wrote:
> On Sun, Jul 27, 2014 at 10:58 PM, Tom Rondeau wrote:
>
>> On Sun, Jul 27, 2014 at 10:36 AM, Activecat wrote:
>>
>>> Dear Sir,
>>>
>>> The new WX GUI Scope Sink behaves slightly differently from the previous
>>> one.
>>> How come it only plots
Dear All,
I am running GNU Radio 3.7.3 on a Debian Wheezy System with XFCE Desktop.
In the setup I have, a USRP N210 with a SBX daughterboard is used. The USRP
samples at 25 MSPS and pretty big processing chain in GNU Radio takes place,
which uses about 40 percent of every of the total 8 CPUS.
T
Hello,
I need to control a RF synthesizer from within a GNURadio flowchart
updating some parameters on the base of some measurements obtained from
processing data collected by an USRP.
The synthesizer is connected through a RS232 serial port, thus is quite
slow, but the bandwidth of the control i
Hi Aaron,
that page is based on libursrp which is horribly outdated :(
Greetings,
Marcus
On 28.07.2014 22:41, Aaron Henderson wrote:
>
>
> Hello All,
>
>
>
> I am going through the process of decimating a signal in my FPGA code.
>
>
>
> In the Verilog code I will make use of the add_routing
On 07/29/2014 04:08 AM, Hoang Ngo-Khac wrote:
> Dear all,
>
> I want to transmit an image over wireless link, so I need two blocks:
> + one for reading grayscale image and giving out a bit stream
I guess if you save the image in a non-compressed, grayscale format this
should come for free.
> +
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