[hpsdr] Janus/Ozy with Linux?

[Rob Frohne]

Hi Ramakrishnan,

The GUI is really not hard to do; it just takes some time.  I've done a
lot of work on Edson's QT SDR-Shell in the last couple of weeks, and now
it integrates nicely through Hamlib with my TS-850SAT using the softrock
455 KHz IF down converter.   I have PCB's for Janus, Ozy, and Atlas, but
I haven't ordered parts and assembled them yet.  In my application, I
don't think having a fantastic audio board is as important, as the
TS-850SAT is the front end.  I was quite disgusted though to find out my
laptop (Dell D600) has mono input instead of stereo, even though the
jack and chip both support stereo.

How hard would it be to integrate Janus/Ozy/Atlas into ALSA?  I note you
didn't mention that option.  I suspect that is the hardest way, but also
perhaps has some benefits for the labor.

It seems to me that the GUI and interfacing Janus/Ozy/Atlas to Linux are
kind of two separate issues.  Am I missing something?

73,

Rob, KL7NA



On Fri, 2007-08-24 at 14:30 +0530, Ramakrishnan Muthukrishnan wrote:
> On 8/24/07, Rob Frohne <frohro at wallawalla.edu> wrote:
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> > Hi Everyone,
> >
> > Is there software to use Janus/Ozy with Linux?
> 
> Not yet, I guess. It is on my list of things to do after I complete my
> softrock rxtx v6.2 build and test.
> 
> There are two approaches one can use.
> 
> 1. Port PowerSDR to use mono. I started this process a couple of weeks
> ago, but it got stalled because of my other commitments. I hope to
> work on it again. But I am a bit skeptical on the GUI. Mono can do
> windows forms, but it is very very sluggish and I feel it will be
> close to unusable state at this point. A good idea will be to port the
> GUI part to use Cairo/GTK. (Any good references/code to do 2D plotting
> using GTK will be very much appreciated).
> 
> 2. Do a fresh implementation of the code using dttsp DSP core and use GTK or QT.
> 
> 3. Write an hpsdr Ozy GNU Radio component. I plan to take this
> approach as I am familiar with GNU Radio code a bit.
> 
>  - loading FX2 and fpga from GNU/Linux is not a problem.
>  - Parsing the data stream (control info mux'ed with data in the USB
> stream) will be the main problem, but not too hard to attack.
> 
> In fact similar thought processes are running in my head too as I too
> have a home GNU/Linux machine running entirely Free Software. I was
> searching for a good/fast way to plot in GTK. There is a library
> called gtkextras which has a gtkplot widget. I am not a GUI
> programmer, so it will be a bit too hard and time consuming for me to
> come up with a good GUI app for SDR on GNU/Linux.
> 
> 73
> Ramakrishnan, VU3RDD
-- 
Rob Frohne, Ph.D., P.E., Professor
E.F. Cross School of Engineering
Walla Walla College
100 SW 4th St.
College Place, WA 99324
(509) 527-2075
http://www.wwc.edu/~frohro/


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