With a proper understanding of what it does and when it does it, the choi=
ce of=20
calling it a default or an error or whatever is up to the specific usage/=
app. =20
But I think we can all agree that it was a silly choice on their part.

Cheers,
-Neil.


On Wednesday 13 July 2005 12:53 am, Ruben J=F6nsson scribbled:
> There is nothing in the data read from the sensor that tells if the 85 =
deg
> C is an error or a real temperature. Sure, you might know that this is =
out
> of the temperature range for your application but generally speaking yo=
u
> can't rely on this.
>
> In all the 1-wire documents (app notes on 1-wire and DS18x20 and
> datasheets) from Dallas/Maxim I have read I have never seen that the 85=
 deg
> C is an error message. True - it is what you get when the power is lost
> during conversion or when the converaion is aborted (not sure about thi=
s
> one, it could be that the old value is still left in the scratchpad ram=
)
> but it is still not an error message. The data sheet doesn't even state
> this as a fact so you can't trust it to be true always.
>
> Let's just agree that we disagree on this one :-)
>
> Ruben


--=20
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