Beginning STM32: Developing with FreeRTOS, libopencm3 and GCC

© Warren Gay 2018

Warren GayBeginning STM32https://doi.org/10.1007/978-1-4842-3624-6_15

15. Clock Tree

Warren Gay¹ 

(1)

St. Catharines, Ontario, Canada

 

Until this point, there’s been an elephant in the room. We’ve configured and used various clocks without saying too much about them. Now is a good time to reveal some of the clock components that have been lurking in the shadows.

While asynchronous logic circuit designs exist, most microprocessors use one or more clocks. The STM32 series is no exception. This series is highly configurable, adding somewhat to its software complexity. But this added flexibility allows the designer to reduce power requirements by turning off peripherals and clocks that are not required.

This chapter will examine the clocks ...