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Re: gEDA-user: OT: OpenOCD?
On Saturday 01 November 2008 08:58:13 pm John Doty wrote:
> Anybody using OpenOCD? I looking at an Atmel AT91SAM7X-EK board for
> prototyping a data acquisition device, with the eventual intention of
> designing a custom board around the AT91SAM7X256 processor with gEDA.
> I need to program it somehow, and Windoze is alien to both the end
> users and me.
>
> I'd be interested in any experiences.
I was evaluating several ARM parts for a project. While doing
due-diligence testing with one of the Atmel AT91SAM7 USB parts.
I found that Atmel's code worked just fine if you had a Intel
Host Controller on your PC mother board. If you had a NEC Host
Controller then the Atmel code locked up.
Tell me how to explain that problem to my end customer???
"Oh sorry you have the wrong chip on your motherboard."
Would not cut it if I was a customer.
I passed this info up the support chain via my FAE.
The answer that came back from Atmel France, home of the
Atmel ARM at the time, was in effect "You are to stupid to
understand our USB code".
It has never been clear to me how my mental capacity
was required to move the USB connector from one USB
port to an other, on the same PC, to have the code work, or not work?
More directly to your JTAG question:
http://www.k9spud.com/jtag/schematic-1.0.php
http://www.k9spud.com/jtag/
If your set on ARM, don't overlook the Actel parts that you can
get free ARM cores for:
http://www.actel.com/products/software/coreconsole/
http://www.actel.com/download/default.aspx
http://www.actel.com/products/mpu/
Unless you get into the really high gate counts 1M+/3M+, depending on the
family, the tools for both Windows and Linux are free. They do keep moving
the links around to them tho. :-(
Many of the Actel parts claim to be rated for "Space Operation" or "Rad Hard",
but I don't know if those families do ARM.
You can get a $99 Igloo Icicle board, or they are coming out with something
newer for $49, to play with.
While off topic anyone ever use a LEON3 processor?
It is one of the cores listed by Actel,
"for system critical applications".
--
http://www.wearablesmartsensors.com/
http://www.softwaresafety.net/ http://www.designer-iii.com/
http://www.unusualresearch.com/
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