Hi Daniel, On 2020-01-15 19:15:11 +0100, Daniel Lezcano wrote: > On 15/01/2020 14:45, Niklas Söderlund wrote: > > Hi Daniel, > > > > Thanks for your feedback. > > > > On 2020-01-15 14:24:30 +0100, Daniel Lezcano wrote: > >> On 14/01/2020 23:29, Niklas Söderlund wrote: > >>> The hardware manual states that the operation of the sensor is not > >>> guaranteed outside the range of -40°C to 125°C, not that the readings > >>> are invalid. Remove the bound check and try to deliver temperature > >>> readings even if we are outside the guaranteed operation range. > >> > >> And what if the sensor is returning crap in this out-of-range operation? > > > > I'm not sure what is worse, reporting an untrue (but still outside the > > guaranteed operation range) extreme temperature or failing with -EIO. > > The view of the hardware guys is that it's better to report what the > > sensor indicates then to return -EIO. > > I don't get the point. > > What happens if we read the sensor while it is above or below the limits? The manual describes the read outs as being +/- 2°C from the true temperature for the guaranteed operating range. Outside this range the difference between the true temperature and the read out temperature might be larger than 2°C. > > > [ ... ] > > > > -- > <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs > > Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | > <http://twitter.com/#!/linaroorg> Twitter | > <http://www.linaro.org/linaro-blog/> Blog > -- Regards, Niklas Söderlund
