Intend to implement ADT7467/ADT7468 driver

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Hi Everybody,

I am currently working on an ADT746[78] driver which will be finished soon.

However, I am not sure how to react to errors. Which values do I return in case
the chip reports errors (i.e. temp=-64 is an error value for the temperature reading,
-63 is ok). Are there somewhere error values defined which can used for this? I do
not think usinf -64 is a good choice, because the chip has two modes for temperature
and an error would be reported as -128 in the other mode. Additionally, -64 could be
interpreted as a real value (at least in sibiria when it is a cold winter day).

Are there somewhere constants like SENSORS_VOLTAGE_INVALID, SENSORS_TEMP_INVALID, ...
which I missed? I think common error values would be really beneficial ...

best regards,
Bernhard

-- 
Dipl.-Ing. Bernhard Rieder           email: bernhard at vmars.tuwien.ac.at
Real-Time Systems Group              web: http://www.vmars.tuwien.ac.at/
Vienna University of Technology      voice: +43 (1) 58801-18224
A-1040 Wien, Treitlstra?e 3/182-1    fax:   +43 (1) 5869149





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