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MMA8652FC motion detection interrupt

Question asked by Daniel Berenguer on Aug 5, 2014
Latest reply on Aug 5, 2014 by Daniel Berenguer

I've been able to configure a MMA8652FC 3-Axis accelerometer to generate interrupts on free-fall events by playing with both FF_MT_CFG and FF_MT_THS registers. After this experience, I'd like the sensor to generate an interrupt when motion is detected. I'm thinking in detecting usual movements like taking an object from a table "in a natural way", but even when setting FF_MT_THS (detection threshold) to a minimum value the interrupt is only generated with fast movements. This is maybe why this functionality is called free-fall/motion detection...

 

Can I really use the MMA8652FC to detect slower movements in an interrupt-generation basis?

 

Thanks again.

 

Daniel.

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