We do not have any drivers for the MPU9225, but I understand that it consists of a couple of sensors inside the same chip. You can check out the libraries that are found in the SDK for Thingy, and see if you find anything useful there. Unfortunately, we don't have any drivers made especially for the MPU9225. If there is no help inside the Thingy-SDK, I suggest that you go public with this case. That is either convert it to public, or create a new public case and ask there. There might be other people in the DevZone community who has already implemented this for the 52DK.
