Odroid,
i've been searching through the source for the BMA150 (digital g force sensor from Bosch) source code and can't find any reference to it except for,

{ "/dev/bma150", 0640, AID_COMPASS, AID_SYSTEM, 0 },
in devices.c

Any hints where i might find it??

Thanks
AusDroid

The BMA150 and Yamaha's e-compass chips are closely tied.
And Yamaha said to us we can't open the source code.
We can't release the source code due to NDA issue.

But, you can refer the source code of original Odroid.
The original ODROID doesn't have the e-compass and it has only a BMA-150.
So, we could open the full source code of BMA150.
http://dev.odroid.com/projects/android/download