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Re: [Discuss-gnuradio] Standalone USRP1 Operation

From: Philip Balister
Subject: Re: [Discuss-gnuradio] Standalone USRP1 Operation
Date: Fri, 24 Apr 2009 14:50:52 -0400
User-agent: Thunderbird (X11/20080501)

Robert Cicconetti wrote:
On Fri, Apr 24, 2009 at 1:39 PM, Eric Blossom <address@hidden> wrote:
On Thu, Apr 23, 2009 at 11:43:19PM -0700, Firas A. wrote:
My question is, has anyone tried to load USRP FPGA image without a PC? For
example using a micro-controller (Like Microchip PIC 18F4550 which has USB
2.0  port) with SD memory holding the image?
This might work.  The control end point works in both USB 2.0 and USB
1.1 mode.  As long as you were only using that, you could probably get
the FX2 image and the FPGA image loaded.

It's worth a try.

Atmel has a similar part (AT90USB1287) and has a devkit, AT90USBKEY,
that might save you some work. It's a USB OTG 2.0 device, $30, has the
right dongle, and has a pair of 64Mbit flash chips on board. The power
supply is spec'd to 8-15V, but might be coaxed to run off something
lower. Digikey/Mouser/Arrow stocks 'em.

You might find a lower cost solution, but by the time you get it working, you may have been better off using the over. I have downloaded firmware from the Overo to the USRP via USB. The bonus is you can run gnuradio on the Overo if needed.


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