Controls

0  - toggle between auto level and rate controllers
1  - deactivate altitude hold
2  - activate altitude hold
3  - not used
4/6  - not used
7  - increase altitude by 0.5m (only works when altitude hold is engaged)
5  - decrease altitude by 0.5m (only works when altitude hold is engaged)
8  - issue flight log save operation
9  - reset!
10 - throttle (up/down); yaw (left/right);
11 - pitch (up/down); roll (left/right);
12 - not used