I've always wondered about the design difference between the E100 and the work you did with Chris Anderson's board ... now I know. BTW where do you have your driver code posted for the E100 and any documentation, if it exists yet :) ? I found slides that you presented on April 13th.
I want to get acquainted with what you did in hopes that I can get hold of an E100 this summer.
al fayez
-----Original Message-----
From: Philip Balister <address@hidden>
To: GNURadio Discussion List <address@hidden>
Sent: Fri, Apr 22, 2011 6:29 pm
Subject: Re: [Discuss-gnuradio] User experience with E1x0 boards
On 04/22/2011 06:00 PM, Almohanad Fayez wrote:
>
> I haven't worked with the E100 per se but I've worked with the Beagleboard +
USRP1 which is the same thing except the E100 uses SPI to communicate with the
processor versus USB. So I've done work on integrating the OMAP3530 DSP with
the GPP within GNU Radio. I feel that the use of the DSP is a MUST to make the
most out of the E100 and with my Beagleboard + USRP setup I was able to run some
FM flowgraphs but one of my bottlenecks was the USB USRP interface which the
E100 would definitely fix.
Al points are good, except the E100 uses the GPMC bus to communicate
with the FPGA. 16 bit wide data bus instead of 1 :)
Philip
>
> Basically with the E100 I feel that you need to get your hands "dirty" where
you might need to rewrite some GNU Radio components to make use of the NEOS
coprocessor, which Philip Balister has done some good work in that respect, and
you would also need to make use of the C64x+ DSP which I can point you to the
source code I've developed.
>
> The E100 has a lot of untapped potential at the moment and I hope to see more
momentum in working with the NEOS and DSP which is what I'm focusing on and
willing to help people to get started on.
>
>
> al fayez
>
>
> -----Original Message-----
> From: Colby Boyer<address@hidden>
> To: GNU Radio Discussion<address@hidden>
> Sent: Fri, Apr 22, 2011 5:43 pm
> Subject: [Discuss-gnuradio] User experience with E1x0 boards
>
>
> Hi All,
> My lab is interested in purchasing some USRPs. It is pretty settled
> hat some of the boards will be the N2x0 series, but I am interested
> o hear from people who have used the E1x0 boards. From what I can
> ell, the E1x0 board should have better latency performance than the
> 2x0 and should have a better interface with the FPGA (GPIO pins);
> lso, it has an onboard DSP. It seems that the latency would be the
> ain motivation for the product, from an experimental point of view.
> Has anyone tried integrating processing on the FPGA and DSP to get
> etter latency results? Your thoughts on the board versus the N2x0?
> If you want to take the discussion off list, feel free to.
> Thanks,
> olby
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