Hi,
my company is currently evaluating usage of the IIS2DULPX accelerometer in one of the products we are developing. Our use case requires that a wake-up interrupt is generated whenever acceleration sample exceeds a set threshold value. However, we would like to generate this interrupt with a threshold that takes into account either:
- an absolute value of a data sample, or a difference between a sample and zero-g offset (interrupt generated when sample > threshold - zero-g offset)
- a difference between a data sample and a configured, constant reference value (interrupt generated when acceleration sample > threshold +/- constant reference value).
We would like to do so while keeping the ODR at 400-800 Hz and the ability to configure threshold as a value in a full +/- 16g range.
From the data sheet it seems that the wake-up feature is fed by an internal slope filter, making it impossible to use wake-up feature as I have specified above. Therefore, is it possible to either disable the slope filter or achieve the aforementioned functionality with use of one of the advanced features, such as finite state machine or machine learning core modules?
Kind regards,
Robert
