Hands-On RTOS with Microcontrollers

Peripheral similarity

Most MCUs, within a given family, will inherit the same peripheral IP. Silicon vendors don't necessarily redesign peripherals from scratch every time they create a new MCU family, so there is often a significant amount of overlap in the register maps and behavior for peripherals belonging to a given vendor. Often, if your applications only use a subset of the most basic peripheral functions, to begin with, you might be lucky enough to use largely the same driver, even if the vendor decides to drastically change their API between MCU families. Ironically, sometimes, the raw hardware proves to be more consistent over time than the abstraction layers above it.