AnsweredAssumed Answered

FIFO timing Error

Question asked by dsouza.hansen on Dec 20, 2011
Latest reply on Jan 17, 2012 by beffumo.fabio
I am facing timing issue with lis3dh accelerometer in FIFO mode.Currently my ODR=25 Hz and I am reading FIFO on watermark threshold=30.As soon as I get watermark interrupt I read 196 (32*3*2)samples at 5 Mhz.Hence I clear the entire FIFO before the next ODR sample time=0.04seconds(1/25).


However after two minutes I am at an positive offset of one second.Is this due to inaccuracies in the accelerometer timing ?


Our application requires that all the FIFO data to be available at precisely 2 minutes.

 

Can you please tell us what can we do to achieve correct timed data.

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