Hi Gregor
Don't miss checking out the uTasker project for the K22: µTasker Kinetis FRDM-K22F support
This includes many features not available in the standard packages, including flexible bootloaders, and real-time processor and board simulation. With out-of-the-box operation for almost all IDEs it is also supported in German language.
It is an industrially proven project framework that allows users to reduce learning curves and greatly accelerate project developments.
Completely free for non-commercial work, but fully supported here or at its own forum.
Regards
Mark
Kinetis: µTasker Kinetis support
K22: µTasker Kinetis FRDM-K22F support / µTasker Kinetis TWR-K22F120M support
For the complete "out-of-the-box" Kinetis experience and faster time to market