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The Definitive Guide to the ARM Cortex-M3, 2nd Edition by Joseph Yiu

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CHAPTER 14

Other Cortex-M3 Features

Publisher Summary

This chapter discusses the other features of Cortex-M3 processor. It elaborates on the SYSTICK register which is a 24-bit down counter and explains how it can be written in assembly language. There are two different clock sources for the SYSTICK counter. When the SYSTICK timer changes from 1 to 0, it will set the COUNTFLAG bit in the SYSTICK Control and Status register. The first one is the core free-running clock and the second one is an external reference clock. It also introduces the readers to the different power management feature of the Cortex-M3 processor. Event Communication Connection in a Two-Processor System is also discussed. The chapter further elaborates on the multiprocessor communication ...

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