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Re: [Discuss-gnuradio] Questions about E100

From: Almohanad Fayez
Subject: Re: [Discuss-gnuradio] Questions about E100
Date: Thu, 28 Apr 2011 15:03:36 -0400 (EDT)

If you're interested modifying the base image beyond what's provided you'll need to get familiar with OpenEmbedded.  It's essentially a complete embedded framework for cross compilation, filesystem generation, and whatever embedded coolness you're interested in.  The E100 has a Gumstix Overo board which contains a TI OMAP3530 which contains an Armv7 GPP and a C64x+ Texas instrument fixed point DSP ... basically no x86.  you would need to get familiar with how to use OpenEmbedded to target the gumstix overo which is fairly well supported.
I know Philip is providing images which also allow you to download installation packages using opkg so people won't have to mess with OpenEmbedded ... I'll leave further commenting to Philip.

al fayez

-----Original Message-----
From: Marcus D. Leech <address@hidden>
To: discuss-gnuradio <address@hidden>
Sent: Thu, Apr 28, 2011 2:40 pm
Subject: Re: [Discuss-gnuradio] Questions about E100

On 28/04/2011 2:26 PM, Stefan Gofferje wrote:
> Hash: SHA1
> Hi,
> as far as I understand, the E100 is a complete standalone system. I'm
> just a bit irritated by the descriptions "Console (USB)" and USB
> on-the-go. I assume, console USB is a serial console via some getty to
> ttyUSBx? How am I supposed to use it? Adaptor USB->Mini-USB and a
> USB-Serial adaptor?
> What is USB on-the-go?
USB on-the-go (OTG) is a USB standard that allows a USB port to adopt 
either "host" or "device"
   personality, depending on application.  It's fairly common on 
embedded-system platforms to
   supply this.

It's also *very* common for such embedded systems to provide a virtual 
serial-port via USB, by virtue of
   "looking" exactly like a USB serial port.  Such devices work with 
existing Linux serial-port
   software, and as you observe will "manifest" as /dev/ttyUSBx or 
sometimes, /dev/ttyACMx.

> How about the software? Is the box x86 compatible or do I have to wait
> for Ettus to create some kind of software image if there is an update of
> gnuradio?
The E100 is based on an TI OMAP  platform.  Phil Ballister could fill in 
the details, but it ships with
   a Linux image pre-installed, and you can do either a cross-build or 
native build of Gnu Radio yourself,
   and most E100 users do so.  It's completely end-user configurable, 
programmable, as you would expect
   any Linux platform to be.  But it's not X86.

> And finally - how about the performance? Does the box run X? Is it
> powerful enough to run grc-created WX-stuff?
It's not a desktop-class platform by any stretch of the imagination.

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