AVR-Chat

Another question is did this ever work?  If so, what has changed since then?
Hardware, software, environment, even things that "don't matter"

David's comment about how debugging is not taught gives me an idea.
Wouldn't it be fun to teach a class where you'd have a lecture/discussion
followed by a set up buggy problem for hands on skill building.  I took
something like this taught internally when I was at Apple and learned some
good techniques.  Doing it in the embedded world where you add the twist of
broken hardware would be a kick.

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of subscriptions@aeolusdevelopment.com
Sent: Tuesday, February 05, 2008 9:50 AM
To: avr-chat@yahoogroups.com
Subject: Re: [AVR-Chat] serial communication

Dennis Clark Wrote
>  And then there is what I have taught my students and preach a bit about
>on the 'net.  It comes in part from Sherlock Holmes and part from my own
>experience:
>
>Data Watson!  Data!  You cannot make bricks without straw.
>
>and
>
>If the data does not make any sense, examine your assumptions, at least
>one of them is incorrect.

And reflect on whether what you think you are measuring and what you are
actually measuring are the same thing. And maybe whether you should be
measuring something else instead.  There's not much utility in measuring
how long something takes when what is important is how quickly it starts
(or vice versa), and if you actually need both only measuring half the
information may be of limited usefulness.

Record everything you do, it's very easy to forget previous informations or
worse remember it incorrectly.

Stop changing things, gather all of your symptoms together along with how
they changed as you modified things (see record everything), and just sit
down and think about what is happening.  You may need multiple attempts
starting from the original source each time to get enough information to
start making sense of the problem.

If it stops failing and you don't know why be worried.

Robert


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