Migrating from AVR to STM32

[Yansi]

The aliases are really simple and consistent. It is a PERIPHERAL_REGISTER_BIT notation. Gives the exact bit set to 1.
There are also a bit position macros (add _Pos at the end) returning the bit number (0..31) and a bit mask macros (add _Msk at the end) when applicable.

To the OP: I have explained this on the first page of the thread.