avsa242 / mma8452q-spin Goto Github PK

The sensor can automatically be woken or put in a low-power sleep state by certain external events.

The sensor can be set to a mode where the output data has reduced noise (but also reduced max range; +/- 4g).

All axes don't seem to be able to quite achieve +/- 1g full-range when measuring gravity, after calibration/bias offsets. Check scaling factors used, calibration code, and try setting offsets manually.

The active state or level of asserted interrupts on INT1 or INT2 can be low or high.

The sensor has a self-test mode that shifts the x, y, z output data.

The sensor has pulse (click) detection support. Add support using the same 'Click' API in other drivers, along with a basic demo.

The chip supports high-pass filtering of the data, with several settings.
Will need consideration of current data rate and oversampling mode to determine available HPF cutoff freqs. Units in milli-Hz.
Refer to AN4071 also.

The basics for detecting landscape/portrait orientation are implemented, but no demo exists - add one.

The chip supports one alternate address.

The sensor can generate an interrupt if it is in free-fall. Add support and a simple demo.

Once most of the features mentioned in other issues have been implemented, port the driver to spin2.