Re: [PATCH v2] lis3lv02d: Add STMicroelectronics lis331dlh digital accelerometer

[Chinmay V S]

Hmmm. Interesting. As i understand LIS331DLH provides 16bit data
irrespective of the full-scale/sensitivity configuration. Hence we
could effectively map +/-2G to +/-32768(signed 16bit 2's complement).
According to the current-patch right-shifting the register values by
4(i.e. reducing 16bit --> 12bit) will mean that we lose accuracy by
~1mG.

Clearly this will NOT affect use-case like display-orientation in
smart-phones, but surely medical and industrial applications WILL
benefit from the additional accuracy by utilising the entire 16-bit
resolution provided by LIS331DLH hardware.

I went through the LIS331DLH datasheet/application-note from
http://www.st.com/internet/analog/product/218132.jsp and i'm a bit
confused from your statement about +/-2G being 12bit data. Nowhere is
it mentioned that LIS331DLH provides +/-2G|+/-4G|+/-8G as 12|13|14 bit
data respectively. Then again i might be wrong...

-- 
regards
ChinmayVS
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