Namely: - I never added rtc to the makefile, so it wasn't getting compiled - I missed 2 includes that are needed once it's actually compiling
These should also work with the f2
Add the register definitions and some of the most basic helper functions for the new style BCD RTC module found on the F2, F4, L1, F3 and F0. This tries to keep as close to HACKING_COMMON_DOC as possible, while maintaining sane names.