Subject:
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Re: ARM Assembly Language Programming on NXT?
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Newsgroups:
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lugnet.robotics.nxt.nxthacking
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Date:
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Sun, 14 Oct 2007 12:16:57 GMT
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Viewed:
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20748 times
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Hi T.C.,
"TC Wan" <tcwan99@gmail.com> writes:
>
> You're right, I've come across several ARM-based SBC and
> SDK boards previously. I haven't found any SDK solutions
> that I'm fully satisfied with at the moment, due to the
> provided development environment (most are Windows based)
> and limited bundled interfacing options.
I have an AT91SAM7S-EK here, it has 4 LEDs and 4 touch buttons.
It should also be fairly easy to write a driver for one of the
serial ports (polling would suffice for a start).
On the NXT the only I/O that is easy to use with the standard parts
is the LED on the light sensor (it is on a GPIO port of the ARM).
The motor encoders are also directly accessible, but it wouldn't
be easy to control them, since they would switch quite rapidly
when the motor is turned. You could try some counting,
e.g. toggling the LED for every n degrees.
> For a teaching environment, I'd prefer a Linux based platform.
You mentioned in your previous post that you found GNU assembler
difficult to use, can you elaborate on what exactly is the problem?
In my experience the assembler itself is quite easy to use,
but setting up the linking and loading was difficult.
Jürgen
--
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
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