Re: [PATCH v1] iio: gyro: mpu3050: Fix reported temperature value
From: Dmitry Osipenko
Date: Thu Apr 22 2021 - 13:43:03 EST
22.04.2021 09:46, Andy Shevchenko пишет:
> case IIO_TEMP:
> - /* The temperature scaling is (x+23000)/280
> Celsius */
> + /*
> + * The temperature scaling is (x+23000)/280
> Celsius,
> + * where 23000 includes room temperature
> offset of
> + * +35C, 280 is the precision scale and x is
> the 16-bit
> + * signed integer which corresponds to the
> temperature
> + * range of -40C..85C.
>
>
>
> Datasheet says typical -30°... also think about the other comment you
> gave, I.e. about temperature of the die itself. Are you suggesting that
> at -40° the die T is also -40°? Does it have perpetuum mobile ? ;) it
> might dissipate not to much energy, but we don’t know the linearity of
> the curve there.
My understanding that -40C is the minimum temperature which sensor may
report.
Alright, I think the comment could be improved a tad anyways. I'll
prepare v3, thanks.