AnsweredAssumed Answered

IIS2DH Reading FIFO

Question asked by Pennell.Andrew on Apr 13, 2017
Latest reply on Apr 13, 2017 by Pennell.Andrew

With a 2g scale sampling @25Hz the FIFO fills with data and I am reading the contents up to the watermark. HR and LPen are disabled.

 

With the Z-Axis pointing toward earth I get the following data for the X-Axis using the H and L bytes:

 

DATX=128

DATX=128

DATX=128

DATX=-64

DATX=192

DATX=-128

DATX=-64

DATX=0

...

 

First, why are the values multiples of 32? Second, why the variability when the chip is still and not moving? I have been using the LIS3DSH for a couple years now so this IIS2DH is a real downgrade for sure, but I must be missing something. I have read over the manual several times now and can't find my issue. 

 

-AP

 

Outcomes