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Re: Watchdogs and safety (was Thinking...)
Michael Pont - Jun 7 2002
Oliver,
> Did your experiments include tests for the probability
> of corruption of different registers?
In a word: no.
I agree that this is an interes... 
Re: Watchdogs and safety (was Thinking...)
Oliver Betz - Jun 6 2002
"Michael Pont" <> wrote:
[...]
> not necessarily the best or only solution. In this case, one impact of EMI
> can be corruption of the program counter, whic... Re: Watchdogs and safety (was Thinking...)
Michael Pont - Jun 6 2002
Lots of interesting ideas in this (by now fairly general) discussion.
Some thoughts.
Watchdogs are not the only form of 'fail safe' mechanism available. Fo... Re: Watchdogs and safety (was Thinking...)
Michael Pont - Jun 7 2002
Oliver,
We've done some work on this, but none of it is specific to HC11.
You'll find a copy of one of our papers:
Ong, H.L.R, Pont, M.J. and Peasgood, W... Re: Watchdogs and safety (was Thinking...)
Roberto G Berner - Jun 6 2002
Michael:
There are many ways to write "almost failsafe" software. Filling unused
program memory with NOP instructions could be one of them. Of course, after
th... RE: Watchdogs and safety (was Thinking...)
- Jun 6 2002
I've seen lots of great SW & HW 'bulletproofing' ideas bouncing around
here.. maybe we can summarize the major ones in a couple of sentences,
and the forum can ad... Re: Watchdogs and safety (was Thinking...)
Oliver Betz - Jun 7 2002
"Michael Pont" <> wrote:
[you mentioned PC/IP corruption by EMI]
> We've done some work on this, but none of it is specific to HC11.
>
> You'll find a co... Re: External watchdog (was: Thinking...)
Kerry Berland - Jun 5 2002
Have seen external watchdogs used fairly frequently
on automotive and industrial circuits where you
want to be sure that power devices are shut down
if the MCU is...