Hi Damindra,
> 1-Is "packet_length_tag" propagate from the USRP sink to
> USRP_source(that is from the transmitter to receiver)?
No. There's no such thing as tagging electromagnetic waves :)
That's why you need things like preambles to mark your packets for a
receiver!
Best regards,
Marcus
Hi,
I added the ~/.gnuradio/config.conf file (previously not existing), with
following lines
[grc]
local_blocks_path=/home/vrege/rfnoc/share/gnuradio/grc/blocks/:/home/vrege/rfnoc/share/uhd/rfnoc/blocks/
The only difference is I can see is a new [RFNoC] option under [UHD] menu,
but there are no b
Hi,
I am trying to understand the tag propagation in GNURadio flow graphs. I
appreciate if you could help me. Here are the questions I have.
1-Is "packet_length_tag" propagate from the USRP sink to USRP_source(that
is from the transmitter to receiver)?
2-If not how can the receiver end knows abo
Martin Braun,
I got it to work thanks to your example. For some reason I couldn't get
the other links to work but the example provided in the first link proved
very useful.
For reference: I wrote the code to create iosig in the ::make and returned
it along with the other arguments. I also need
We'll have to discuss what you mean with "channels" – do you mean
separate OFDM *signals*, or do you mean multiple *streams of data*?
Best regards,
Marcus
On 12/12/2016 08:09 PM, Damindra Bandara wrote:
> Dear Tom and Marcus,
>
> Thank you very much for pointing me to OFDM example. I was able t
Dear Tom and Marcus,
Thank you very much for pointing me to OFDM example. I was able to use that
example and accurately transmit and receive files using X310 USRPS. I have
a follow-up question.
How can I modify these flow graphs to transmit multiple channels(that is
transmitter talking to multipl
Hi Paul,
Thanks for the quick response. The RPi 3 had enough processing power to
receive a message using gr-ieee802.15.4 from a ZigBee chip in real-time. I
believe I'm running the Wifi also in real-time, is there a way to do it in
non-real time instead?
Thanks,
Eric Yates
On Mon, Dec 12, 2016 a
I would be shocked if the Raspberry Pi 3 has the processing power to run
gr-ieee80211. Are you attempting to do this real-time?
PWG
On Dec 12, 2016, at 10:31 AM, Eric Yates
mailto:e...@lexistartup.com>> wrote:
Hello,
I'm running gr-ieee802.11 on a Raspberry Pi 3 running Raspbian. I'm connected
Hi Rich,
you've got that right – PMT pretty much enforces a paradigm of returning
new objects when you need a modified version of something.
>
> Is there a right way to do this that doesn't require a left-hand side
> assignment?
No, your understanding is right, the documentation is wrong :)
Be
GRC
> Message-ID:
>
>
> <mailto:calq8fdjjffmym-eseernvoelkylozclrs0p53hqciw3cbah...@mail.gmail.com>>
> Content-Type: text/plain; charset="utf-8"
>
> Hi,
>
> I'm unable to view RFNoC blocks in gnuradio-companion
Hi Martin,
Thanks for your response. Are benchmark_tx and benchmark_rx both deprecated
? And is there any example flowgraph which uses the ofdm_transmitter which
I can use to send the data. I have a CS background and I do not know much
about the signal processing at PHY layer in great detail.
Bes
Nikita,
this utility stores data in raw, native format. For example, if you
selected 'float' as the CPU type, the file will have 32 bit floating
point I, 32 bit floating point Q, etc.
You can read it with pretty much any tool. See e.g. here:
http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#
djjffmym-eseernvoelkylozclrs0p53hqciw3cbah...@mail.gmail.com>>
> Content-Type: text/plain; charset="utf-8"
>
> Hi,
>
> I'm unable to view RFNoC blocks in gnuradio-companion (in the block
> list on
> the right side). Sometimes I can vi
Hello,
Something that has tripped me up a couple times when messing around with
PMTs is I forget that there's a left-hand argument to pmt::dict_add
(especially since the first argument is the pmt dictionary I want to
update). Being a little new to this still, it took me a little while to
figure ou
ate: Sun, 11 Dec 2016 23:16:39 -0800
> From: Vishwesh Rege
> To: discuss-gnuradio@gnu.org
> Subject: [Discuss-gnuradio] RFNoC blocks in GRC
> Message-ID:
> bah...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi,
>
> I'
Hello,
I'm running gr-ieee802.11 on a Raspberry Pi 3 running Raspbian. I'm
connected to a bladeRF and running GRC 3.7.10. At this point, I want to
sniff WiFi packets to demonstrate the bladeRF working with receiving WiFi
from say a router or laptop (no transmission yet). I'm using the 2.4GHz
band
Hi Vishwesh,
you **must** make sure that the GNU Radio that is used to build
gr-ettus, to build your OOT and to run GRC are the same.
Otherwise, a lot of conflicts will arise, which will be specific to your
PC, and we can't do anything about that; so please make sure you've only
got one copy of G
Vishwesh,
Sorry for my late response. Luckily you can create/modify the configuration
file to tell grc where the blocks are. Please take a look at [1] where the
process is explained, PyBOMBS sets up environmental variables, which are
the method 3, but does it automatically.
Please let us know if
Hi,
Sorry but I don't know what you mean by "reconfigure your grc to look for
the path where your blocks are, or reconfigure your block installation path
to install at the location where gnuradio is looking for them. Or use the
grc that you installed with that recipe"... as in the steps to do that
Hello Vishwesh,
that recipe installs gnuradio in your path too. I believe that if you run
grc from from that prefix, your blocks will be picked up. The gnuradio from
the prefix has the env_var GRC_BLOCKS_DIR setup so that it is included
within the PyBOMBS prefix.
On the other hand, when you open
Hi,
I understand but sourcing the setup_env.sh file isn't working for me
unfortunately at this time. Previously on a different machine this was what
seemed to have solved the issue.
I did use PyBOMBS for installation, this is the exact sequence of commands:
sudo pip install PyBOMBS
pybombs recipes
Hello Vishwesh,
I believe that in this case it is only a matter of where the blocks are
installed, and where grc is looking for them. When you install OOT modules
(gr-ettus is itself an OOT module for RFNoC) it also has an installation
path, where GRC is going to be looking for the blocks that are
Hello everyone!
I am tryning to capure the IQ samples over the air to determine the noise
floor at the given frequency.
However, I have not been able to read the files uhd_rx_cfile creates. Is
there a special utility/program in gnuradio or otherwise that I could use
to read this data and separate
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