Getting Started with QNX Neutrino - QNX Software Systems

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About Rob Krten © 2009, QNX Software Systems GmbH & Co. KG. if that happens, this section will help you avoid common pitfalls and show you how to write code that’s portable to both operating systems. Calling 911 Glossary Index Where you can turn to when you get stuck, find a bug, or need help with your design. Contains definitions of the terms used throughout this book. You can probably guess what this is for. . . Other references About Rob Krten Acknowledgments In addition to the custom kernel interface, QNX Neutrino implements a wide range of industry standards. This lets you support your favorite publishers when looking for information about standard functions from ANSI, POSIX, TCP/IP, etc. Rob Krten has been doing embedded systems work, mostly on contract, since 1986 and systems-level programming since 1981. During his three year contract at QSS, he designed and presented QSS’s courses on “Realtime Programming under the Neutrino Kernel” and “Writing a Resource Manager.” He also wrote the prototype version of QSS’s QNX Neutrino Native Networking Manager (Qnet) software, as well as a significant portion of QSS’s Building Embedded Systems book. Both this book and his previous book, Getting Started with QNX 4 — A Guide for Realtime Programmers, have received a Society for Technical Communications (STC; http://www.stc.org/) Award of Merit. Rob maintains a website at http://www.krten.com. This book would not have been possible without the help and support I received from the following people, who contributed numerous suggestions and comments: Dave Athersych, Luc Bazinet, James Chang, Dan Dodge, Dave Donohoe, Steven Dufresne, Thomas Fletcher, David Gibbs, Marie Godfrey, Bob Hubbard, Mike Hunter, Pradeep Kathail, Steve Marsh, Danny N. Prairie, and Andrew Vernon. (Apologies in advance if I’ve missed anyone.) I’d like to particularly thank Brian Stecher, who patiently reviewed at least three complete drafts of this book in detail, and Peter van der Veen, who spent many nights at my place (granted, I did bribe him with beer and pizza), giving me insight into the detailed operations of QNX Neutrino’s resource managers. Thanks to Kim Fraser for once again providing the cover artwork. 10 Preface to the First Edition by Rob Krten April 30, 2009
© 2009, QNX Software Systems GmbH & Co. KG. Acknowledgments Additionally, my thanks goes out to John Ostrander for his excellent grammatical suggestions and detailed proof-reading of of the book :-) And of course, a special thank-you goes to my editor, Chris Herborth, for finding the time to edit this book, help out with the sometimes obscure SGML/LaTeX tools, etc., all while doing dozens of other things at the same time! [I told you to remind me not to do that again! – chrish] I’d also like to gratefully acknowledge the patience and understanding of my wife, Christine, for putting up with me while I crawled off into the basement and ignored her for hours on end! April 30, 2009 Preface to the First Edition by Rob Krten 11
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Page 3 and 4: Contents About This Guide xi What y
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Chapter 2 Message Passing In this c
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Message passing and client/server
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Chapter 3 Clocks, Timers, and Getti
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Using timers © 2009, QNX Software
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Chapter 4 Interrupts In this chapte
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Writing interrupt handlers © 2009,
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TIME TIME Writing interrupt handler
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Summary © 2009, QNX Software Syste
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Appendix B Calling 911 In this appe
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Seeking professional help © 2009,
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Seeking professional help © 2009,
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Appendix C Sample Programs In this
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Index ! /dev/null resource manager
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