GSOC 2020

2020-01-11 Thread Samesh Lakhotia
Hello everyone,
I am Samesh Lakhotia, a second year Electronics and Communication
undergraduate from BITS Pilani, India.

I started using GRC and it felt like a great tool. I would like to
contribute to the GRC project. I looked into some features which could be
implemented in GRC with the help of the GSOC  2019 ideas list here
https://wiki.gnuradio.org/index.php/GSoCIdeas.

I saw some ideas which have not yet been completed and I would love to work
on them on GRC.
The ideas include "GRC: Bus-Ports reimplementation", "GRC: View-Only Mode
(Secure)" and GRC: Build-in sub flowgraphs".

I wanted to know the current status of these ideas and would like to start
contributing to them ASAP. Could you all please tell me if one of these
ideas has a higher priority than the other so I could start working on the
appropriate idea.

Thank you,
Samesh Lakhotia


Re: GSOC 2020

2020-01-11 Thread Sebastian Koslowski
Hey Samesh,

Welcome to the GNU Radio community. I am especially happy that your
interested in improving and extending GRC.

>From the project ideas you listed, only the bus ports have been
implemented. The other two have good chances to be list for GSoC 2020. I
personally would prioritize the sub-flowgraphs. Please note though, that
its quite a while until GSoC starts (orgs application hasn't even started
yet).

Currently there is an effort to move a away from the GTK bases GUI to a qt
based one. Maybe you'd like to contribute in porting stuff over.

Sebastian


(von unterwegs gesendet)

On Sat, Jan 11, 2020, 14:21 Samesh Lakhotia 
wrote:

> Hello everyone,
> I am Samesh Lakhotia, a second year Electronics and Communication
> undergraduate from BITS Pilani, India.
>
> I started using GRC and it felt like a great tool. I would like to
> contribute to the GRC project. I looked into some features which could be
> implemented in GRC with the help of the GSOC  2019 ideas list here
> https://wiki.gnuradio.org/index.php/GSoCIdeas.
>
> I saw some ideas which have not yet been completed and I would love to
> work on them on GRC.
> The ideas include "GRC: Bus-Ports reimplementation", "GRC: View-Only Mode
> (Secure)" and GRC: Build-in sub flowgraphs".
>
> I wanted to know the current status of these ideas and would like to start
> contributing to them ASAP. Could you all please tell me if one of these
> ideas has a higher priority than the other so I could start working on the
> appropriate idea.
>
> Thank you,
> Samesh Lakhotia
>


Re: FSK and Timing Recovery Questions

2020-01-11 Thread Barry Duggan

Hi Alex,

You might be interested in:
https://wiki.gnuradio.org/index.php/Sample_Rate_Tutorial#Source_hardware_example

It's a little different approach, but works very well. Contact me if you 
have any questions.


Happy New Year to you too.
--
Barry Duggan KV4FV

On Wed, 8 Jan 2020 13:57:09 -0600, Alex Roberts wrote:

Hello Mailing List,

Happy New Year!

I've been playing around with this (
http://aaronscher.com/GNU_Radio_Companion_Collection/Audio_Modem_loop_back_test_FSK.html)
FSK audio modem and have a few issues/questions.

1) Is the PFB block the way to go for FSK timing recovery? I have issues
where if I start the receiver before the transmitter, the system doesn't
work. And if I start the transmitter before the receiver, it will
eventually lose sync and never recover. I added a message strobe to send
dummy data once a second (like a keep alive/heartbeat) and this helps it
from losing sync in between time of when I send meaningful data.

1a) Reading docs on both PFB and M&M blocks, do I need a moving avg. 
filter

after quad demod to round out the square pulses to allow PFB and M&M to
better find peaks or is the moving avg filter implemented within the 
block?


2) Is the pre-amble being muxed doing anything more than just padding my
data to help the PFB lock in before actual data arrives?

3) Would the Correlation Estimator help since it can send "time_est" 
tags
downstream to the PFB and if so, where would be the ideal place to put 
it?


Cheers,
Alex



Windows Installers 3.8.0.0 BETA starting problems

2020-01-11 Thread vempati Sarma
Hi,
This could be a trivial issue, but I am reporting out of curiosity.
I am using gnuradio 3.8.0.0 on Windows 10. Whenever, I start GRC I am
receiving following warning, on terminal output:
WARNING:gnurado.grc.core.platform:slow YAML loading(libyaml not available).
Some times it does take some time more than earlier versions.

-- 
Best Regards,
vsrk sarma