[hpsdr] Beagleboard + Tin Can Tools Trainer board for SDR?

[Mike Luckham]

Jani, thank you for the very detailed explanation - there are a number of
areas that I can research, it would be great to combine DSP learning with
signal processing learning.

Thank you very much,
Mike


  
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-----Original Message-----
From: Selmeczi János [mailto:jani.ha5ft at freemail.hu] 
Sent: November 22, 2010 03:10
To: Mike Luckham; hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Beagleboard + Tin Can Tools Trainer board for SDR?

Hi Mike,

You could do some SDR development with the beagleboard. The simplest
hardware configuration is a Softrock analog down converter and the
beaglebord. In this case you use the beagleboard's audio codec for
digitizing the I/Q output of the Softrock.
Alternatice configuration could be the HPSDR hardware (Mercury + Penelope +
Ozy + Atlas) and the beagleboard. In this case you get the digitized I/Q
samples from the hpsdr hardware to the beagleboard using one of the board's
usb port.
On the software side you could develop software for the beagleboard using
TI's DVSDK 4.0 GA development kit and the CodeSourcery ARM cross compiler.
These development softwares currently run under ubuntu 10.04 (according to
TI). The kit contains everything you need to develop software for the dsp
core. Until now it was a farly complicated thing to get signal processing
blocks running on the dsp. It has involved several TI software components
(DSP/BIOS, DSP-LINK on the ARM and the DSP side,....). Right now its just a
matter to define in which care you would like to run the signal processing
routine. There is one major roadblock however. Most of the currently
available sdr algorithm are implemented using floating point arithmetic.
(all of the software related to the HPSDR hardware has been written this
way). For the beagleboard you need to develop fixed point algorithms. It is
possible to do it, but it takes time. Maybe you cab get som ideas in this
respect from the dsPIC communities. They are using processors with fixpoint
dsp capabilities.

73,

Jani, HA5FT


  Mike Luckham <sunrise at sunsys.net>, ezt írta: 
  
  ***** High Performance Software Defined Radio Discussion List *****



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      I'm new to SDR but interested in exploring - could the Beagleboard +
the Tin Can Tools Trainer board
(http://www.tincantools.com/product.php?productid=16149) be used as a means
of interfacing an antenna or preamp to the Beagleboard?  If so, how could
the Beagleboard's DSP be used for programming?  What Tapr boards would be
relevant?
 
Mike Luckham
 


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