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Re: [Discuss-gnuradio] Embedded control of USRP

From: Thomas Schmid
Subject: Re: [Discuss-gnuradio] Embedded control of USRP
Date: Mon, 3 Apr 2006 10:22:01 -0700

Hi Lee,

We are also looking into similar things, though we don't have the
power constraints which will be difficult to meet. We are currently
looking at a micro-atx solution with an amd geod nx processor since
this one is compatible with the amd athlon mobile. this should make it
easy to have a running linux system.

we were first also thinking about platforms which feature a intel
xscale processor, though quickly found out that it doesn't support
floating points. GNU Radio makes heavy use of floating point
operations. Thus it is key, especially if the platform is not very
powerfull, that it supports at least hardware floating points.

Also, did you consider the power consumption of the usrp? I don't know
if someone measured it, but this might also be a problem for you,
i.e., finding a battery which supports the usrp over a longer time.



On 4/3/06, Lee Patton <address@hidden> wrote:
> Thanks for the reply, Clark.  Basically, the project we're working on
> involves putting the USRP on a small UAV ("A" as in "aerial" not
> "autonomous").  So, weight and power consumption are key.  The hydraxc
> looks very cool.  However, I think we can go larger. And, for the first
> cut at a solution, we want to go for the simplest thing that works.  It
> seems like the hydraxc might not be that. However, for a final design
> choice, it might work very nicely.  In fact, it looks like it could be
> the solution, but it will take more time to get up and running than we
> have.  I hope you will update the list as you make progress with the
> hydraxc.
> - Lee
> On Sun, 2006-04-02 at 09:36 -0400, Clark Pope wrote:
> > Lee,
> > I am very much interested in the same. Specifically, I'd like to get it on
> > embedded Linux running off a virtex-4 FPGA. This module from
> > hydraxc(http://www.hydraxc.com/) has a USB2.0 port and is the size of a
> > stick of gum.
> >
> > Seems like one should be able to connect this to a USRP with a 100 MHz PPC
> > linux to process at least a couple hundred kilohertz bandiwidth. The ehci
> > driver should already exist so I guess it's just a matter of getting python
> > to run on it and setting up a cross compiler environment for the c++ files.
> >
> > I have a USRP and I've ordered a hydraxc. Let me know if you want to pursue
> > further. I don't have much time to throw at it, but I can at least try some
> > things out to gage how much work is involved.
> >
> > Thanks,
> > Clark
> >
> >
> >
> >
> > >From: Lee Patton <address@hidden>
> > >To: address@hidden
> > >Subject: [Discuss-gnuradio] Embedded control of USRP
> > >Date: Sat, 01 Apr 2006 11:33:28 -0500
> > >
> > >I would like to control the USRP with a smaller embedded Linux computer
> > >instead of a laptop. I've don't have any experience with this sort of
> > >thing, and searching "embedded" in the mailing list archive didn't
> > >return much.  So, I was hoping some of you pros out there might be able
> > >to point me in the direction of some products you like.  I'm not sure
> > >what our requirements are exactly. However, I can say, the smaller the
> > >form factor, and the less power consumed, the better.  I don't think we
> > >need too much horsepower. Our application just doesn't call for it.  Any
> > >suggestions would be greatly appreciated.
> > >
> > >Thanks,
> > >  - Lee
> > >
> > >
> > >_______________________________________________
> > >Discuss-gnuradio mailing list
> > >address@hidden
> > >http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
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