hum.... with ds2480 how reset_errors is incremented? maybe it occur with a
serial break command?
2012/2/4 Michael Markstaller <m...@elabnet.de>
> Am 04.02.2012 16:42, schrieb Michael Markstaller:
> > Short conclusion: If my assumptions are right, reading a DS18B20
> > (parasite OR powered doesnt matter) switches the DS2490 from flexible to
> > regular-speed and disables Strong pullup..
>
> While doing further tests: I *think* I narrowed it down further: the
> (unwanted) switch from flexible to regular-speed happens when a
> reset_error occurs.
>
> With 2.8p2 I don't see that much reset_errors, so less problems.
> With 2.8p14 reset_errors occur pretty quick after 1-5 conversions and
> then the problems start..
>
> So the root-cause might be the reset_error which also happens on very
> short and clean bus with 2.8p14 which is likely also related to the
> other problems I have..
>
>
> Michael
>
>
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Roberto Spadim
Spadim Technology / SPAEmpresarial
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