May 2020
Intermediate to advanced
524 pages
13h 35m
English
Content preview from ARM-Based Microcontroller Multitasking ProjectsBecome 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 7
Introduction to multitasking
Abstract
Most complex real-time systems require a number of tasks (or programs) to be processed at the same time. For example, consider an extremely simple real-time system that is required to flash an LED at required intervals, and at the same time look for a key input from a keyboard. One solution would be to scan the keyboard in a loop at regular intervals while flashing the LED at the same time. Although this approach may work for a simple example, in most complex real-time systems a multitasking approach should be implemented. The term multitasking means that several tasks are processed in parallel on the same CPU. In a multitasking system, several tasks to run on a single CPU at the same time. Therefore, ...
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