May 2020
Intermediate to advanced
524 pages
13h 35m
English
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Chapter 13
Software timers
Abstract
Software timers are important parts of any real-time operating system. The timers are used in tasks to schedule the execution of a function at a time in the future, or periodically with a fixed frequency. Software timers under FreeRTOS do not require any hardware and are not related to hardware timers as they are implemented in software. When a timer expires the program can be configured to call a function called the timer’s callback function. A timer must be created before it can be used. Timers must be started, stopped, or reset manually by the user programs. Software timer API functions send commands from the calling task to the daemon task on a queue called the “timer command queue.” This chapter is about ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.