[hpsdr] Potential New openHPSDR Project

[Phil Harman]

Hi Ed,

That looks like a good way to start -  read the USB data directly from Ozy 
but I'm not sure if the BeagleBoard USB port will run at 480Mbps?

An alternative.... I see the BeagleBoard can be configured to have an I2S 
interface in which case I can provide you with  I&Q data in that format, 
together with the necessary  LRCLK, BCLK and MCLK via some pins on the Atlas 
bus.  You would just need a Mercury board for this test, I can write you 
some test code for Mercury that simulates a  fixed frequency carrier at the 
antenna socket and fixes the receive frequency at say 1kHz away.  That will 
give you an I2S signal with I&Q in it that can be used to replace the ADC 
signals that the BeagleBrick can currently get from say a SoftRock.

If  you have a Janus board you could listen to the I & Q signals from 
Mercury with that  just to confirm that all is working OK.

73's Phil....VK6APH

----- Original Message ----- 
From: "Thierbach, Ed" <ethierba at umich.edu>
To: <hpsdr at lists.openhpsdr.org>
Sent: Saturday, July 10, 2010 12:18 PM
Subject: Re: [hpsdr] Potential New openHPSDR Project


> ***** High Performance Software Defined Radio Discussion List *****
>
> Sounds like the first pass, then, would be to use USB, as we would with an 
> outboard PC, and see what we can do.  Next step, or maybe in parallel, is 
> for the hardware wizards to work out ways of getting the boards talk 
> directly with Atlas.
>
> I've been eyeing the BeagleBoard for a while, so I'll get one of those. 
> Not sure if I'll wait for the xM, or get a C4 now and save my pennies for 
> an xM later.  The BeagleBrick project 
> (http://beagleboard.org/project/BeagleBrick/) has probably made some good 
> progress; that might be a nice place to start.
>
> -Ed-


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