Am 08.10.20 um 15:07 schrieb Mick Sulley:
>
> But owwrite /simultaneous/temperature 1 should trigger a conversion? and
> reading latesttemp should then be correct. Here is another. Latesttemp
> returns 85 even after owwrite /simultaneous/temperature 1, but read
> temperature12 and it works again. I don't understand why!
>
Most likely it's a problem with power. Do you power each chip
separately, or do they all pull, from the same +5V line?
>
> I have a few more in this state at the moment, I am sure I could fix
> them all with a single temperature12 read to each and they would then be
> fine, but I would really like to understand what the problem is
>
You could try to find out if the simultaneous command is not going
through to all chips (chips never read 85°C on latesttemp) or if you
still get those spurious resets.
But it's only a debugging tool. In a production setup, it would only
ever mask the underlying problem and return a wrong ages-old temperature
instead.
Kind regards
Jan
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