linux-kernel - Re: [PATCH v1] iio: gyro: mpu3050: Fix reported temperature value

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Message-ID: <f4a52b38-733a-f800-52f5-0b98acf360d9@gmail.com>
Date:   Thu, 22 Apr 2021 04:20:52 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Svyatoslav Ryhel <clamor95@...il.com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] iio: gyro: mpu3050: Fix reported temperature value

22.04.2021 03:34, Andy Shevchenko пишет:
>     -                       /* 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 signed
>     +                        * 16bit integer which corresponds to the
>     temperature
> 
> 
> “...16-bit signed integer...”
>  
> 
>     +                        * range of -40C..85C.
> 
> 
> 
> Datasheet says -30°C..+85°C.

Datasheet says this for the "Best fit straight line", while the min
value is -40C.