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[MMA8451Q] sensor toolbox question

Question asked by Robin Kim on Nov 5, 2014
Latest reply on Jan 29, 2015 by troydaniel

Hi, I am testing functions of MMA8451Q following user's guide and facing day1 problems...

1) Enabling Latch

the sensor does not work appropriately when the latch is enabled and Transient Interrupt is selected. My understanding is in the indicator light in the main screen shouldn't flip or stay red if the Transient detection tap is read.


figure1: Transient interrupt is sold red/flipping green (occassionally) as I shake the sensor (Threshold was set very low 0.6g).


2) Also, Directional Tap Low-Power with FIFO application never work. I set the values and ran active mode, tapped sensor, but nothing happens.. (Although tap is detected in Full System Evaluation application) .



figure2: Active mode and nothing appears (using MMA8451Q).





Can someone help me?


Thanks in advance for your time and help.