August 2011
Intermediate to advanced
560 pages
9h 9m
English
Content preview from Advanced PIC Microcontroller Projects in CBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 10. Multi-Tasking and Real-Time Operating Systems
Nearly all microcontroller-based systems perform more than one activity. For example, a temperature monitoring system is made up of three tasks that normally repeat after a short delay, namely:
Task 1 Reads the temperature
Task 2 Formats the temperature
Task 3 Displays the temperature
More complex systems may have many complex tasks. In a multi-tasking system, numerous tasks require CPU time, and since there is only one CPU, some form of organization and coordination is needed so each task has the CPU time it needs. In practice, each task takes a very brief amount of time, so it seems as if all the tasks are executing in parallel and simultaneously.
Almost all microcontroller-based systems work ...
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