[hpsdr] [OT] Embedded systems report

[Sid Boyce]

No surprises that python was chosen for HiQSDR.
Jim Ahlstrom who is the author of quisk is a renowned authority on 
python and has published books on the subject.

quisk was originally written to support Jim's ft245 transceiver design 
and latterly used to support his N2ADR transceiver published in QEX 
which formed the basis of DB1CC's HiQSDR. He later developed  qvna to 
add VNA function to his N2ADR design and HiQSDR.

When I was looking for Linux software to support Softrock, I contacted 
Jim as quisk seemed the easiest way to go. With information I provided - 
emails back and forth - and eventually a Softrock Ensemble II RXTX I 
donated allowed  him to test quisk on Softrock himself and so shortening 
the development chain.

As python is an interpreted language it is slow on embedded systems 
being very heavy on CPU resources but works well if the video processing 
is done using a GPU. On the ODROID-X without mali400 GPU support, quisk 
outputs sound and video in short blotches so that not even a short CW 
character can be read. With mali400 GPU support quisk works fine so it's 
possible to use a small embedded system with quisk. May be a Mark II 
HiQSDR incorporating a SoCFPGA would be just fine.
73 ... Sid.

On 03/06/13 17:42, Ken N9VV wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> <URL: 
> http://www.cnx-software.com/2013/05/21/2013-embedded-market-study-software-development-processors/
> >
>
> Interesting to see how C# is doing.
> Python was chosen for the HiQSDR project by N2ADR and DB1CC.
>
> read down page to see which O/S is selected for new projects.
> Maybe Windows-8 will wipe this slate clean at Christmas 2013?
>
> dit dit
> de Ken N9VV
> -- 
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-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks


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