ucos ii英文教程,My first book, “μC/OS, The Real-Time Kernel” is now 6 years old and the publisher has sold well
over 15,000 copies around the world. When I was asked to do a second edition, I thought it would
be a fairly straightforward task; a few corrections here and there, clarify a few concepts, add a
function or two to the kernel, etc. If you have a copy of the first edition, you will notice that
“μC/OS-II, The Real-Time Kernel” is in fact a major revision. For some strange reason, I wasn’t
satisfied with minor corrections. Also, when my publisher told me that this time, the book would
be a ‘hard cover’, I really wanted to give you your moneys worth. In all, I added more than 200
new pages, and re-wrote the majority of the pages I did keep. I added a porting guide to help you
port μC/OS-II to the processor of your choice. Also, I added a chapter that will guide you through
upgrading a μC/OS port to μC/OS-II.
The code for μC/OS-II is basically the same as that of μC/OS except that it contains a number of
new and useful features, is much better commented, and should be easier to port to processor
architectures. μC/OS-II offers all the features provided in μC/OS as well as the following new
features:
· A fixed-sized block memory manager,
· A service to allow a task to suspend its execution for a certain amount of time
(specified in hours, minutes, seconds and milliseconds),
· User definable ‘callout’ functions that are invoked when:
a task is created,
a task is deleted,
a context switch is performed,
a clock tick occurs.
· A new task create function that provides additional features,
· Stack checking,
· A function returning the version of μC/OS-II,
· And more.
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