Hello everyone,

I found the following document on the implementation of eCompass:

http://cache.freescale.com/files/sensors/doc/app_note/AN4248.pdf

The described algorithm allows to find ways of movement of the three corners.

But how do I figure out which cardinal point is addressed?

Is there a document that explains it?

Thanks for any help

I'm not sure I 100% understand your question, but let me take a stab at it...

You ask "which cardinal point"... I believe the answer is "ALL of them". Whatever your device is, we assume it is a rigid body, and all axes rotate together.

Also, if you haven't already, I strongly suggest you download the sensor fusion library from nxp.com/sensorfusion. For eCompass to work properly, you really want access to our full magnetic calibration library. Both are included as in the fusion library.

Regards,

Mike