By J Labrosse Jean, Kovalski Fabiano

This two-part publication places the highlight on how a real-time kernel works utilizing Micrium's μC/OS-III kernel as a reference. half I contains an summary of the operation of real-time kernels, and walks via a variety of facets of μC/OS-III implementation and utilization. half II presents program examples (using the flexible Renesas YRDKRX62N evaluate Board, to be had individually) that let readers to speedily increase their very own prototypes. This booklet is written for severe embedded platforms programmers, specialists, hobbyists, and scholars drawn to realizing the internal workings of a real-time kernel. μC/OS-III isn't just a very good studying platform, but additionally an entire commercial-grade software program package deal, able to be a part of quite a lot of items. μC/OS-III is a hugely moveable, ROMable, scalable, preemptive real-time, multitasking kernel designed in particular to deal with the not easy specifications of today’s embedded structures. μC/OS-III is the successor to the hugely renowned μC/OS-II real-time kernel yet can use such a lot of μC/OS-II’s ports with minor transformations. a few of the good points of μC/OS-III are: Preemptive multitasking with round-robin scheduling of initiatives on the comparable precedence helps and limitless variety of projects and different kernel gadgets wealthy set of companies: semaphores, mutual exclusion semaphores with complete precedence inheritance, occasion flags, message queues, timers, fixed-size reminiscence block administration, and extra. integrated functionality measurements

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The “<” and “>” are not part of the actual name. \ This is the name of the evaluation board. A board from Micriμm will typically be called uC-Eval-xxxx where “xxxx” represents the CPU or MCU used on the board. The “<” and “>” are not part of the actual name. \ This is the name of the compiler or compiler manufacturer used to build the code for the evaluation board. The “<” and “>” are not part of the actual name. 44 Directories and Files 2 \ The name of the project that will be demonstrated.

C contains the C code for the port specific hook functions and code to initialize the stack frame for a task when the task is created. 2-6 μC/CPU, CPU SPECIFIC SOURCE CODE μC/CPU consists of files that encapsulate common CPU-specific functionality and CPU and compiler-specific data types. See Chapter 18, “Porting μC/OS-III” on page 343. C \Micrium Contains all software components and projects provided by Micriμm. \Software This sub-directory contains all software components and projects. 52 Directories and Files 2 \uC-CPU This is the main μC/CPU directory.

Chapter 18, Porting μC/OS-III. This chapter explains, in generic terms, how to port μC/OS-III to any CPU architecture. Chapter 19, Run-Time Statistics. μC/OS-III provides a wealth of information about the run-time environment, such as number of context switches, CPU usage (as a percentage), stack usage on a per-task basis, μC/OS-III RAM usage, maximum interrupt disable time, maximum scheduler lock time, and more. Appendix A, μC/OS-III API Reference Manual. This appendix provides a alphabetical reference for all user-available services provided by μC/OS-III.

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