Application versions for BMI270

[Ethan]

Hi,

I am trying out with BMI270 shutter board. From the description:
https://www.bosch-sensortec.com/news/bosch-launches-smart-ultra-low-power-imu-bmi270.html
There are two application-specific versions: gesture and context/activity.
For our usage, I think the geture version will help more.

The data sheet seems very straight forward to set up.
But after I enabled activity and gesture, seems I can only get activity works.
Tried disable activity and enable gesture/wake up only, still no output for the gesture feature.

So I am wondering, what the meaning of two application specific versions?
Are they both implemented and coexisted in same chip?
Any specific register operation to enable the gesture version?

Thanks

[Vincent · Accepted solution]

Yes, BMI270 have two different feature set according to gesture and context / ativity. 

Both two are based on different configuration string.

Suppose you are using the API from our Github.  In that package, you can see bmi270.c and bmi270_context.c. 

So if you want to use context feature,  you should using the bmi270_context_config_file instead of bmi270_config_file during initialize the sensor. 

[Ethan]

Thanks Vincent,

Before, I used the zephyr project with BMI270 driver from your company's forked branch.
Seems that driver initialized BMI270 without gesture feature.
Maybe worth to add a property for zephyr BMI270 device to set feature, etc.

After changed to the API and referred to wrist_gesture example.
It works now. Got valid gesture output.