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Firmware Update
- December 14, 2009
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In this issue:
-- Mutexes and Semaphores Demystified
-- Embedded Programmers Earn Failing Grade in C
-- Dates Set for Embedded Software Boot Camps in Early 2010
-- Industry News and Useful Links -- Jobs! Jobs! Jobs! -- Please Forward This Newsletter
Firmware Update is a free newsletter by embedded software expert Michael Barr. It is Copyright 2009 by Netrino, LLC, but may be reprinted for non-commercial purposes. Please forward it to colleagues who may benefit from the information. |
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Mutexes and Semaphores Demystified ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
What's the difference between a mutex, a
binary semaphore, and a counting
semaphore? Even very experienced
embedded programmers fail to fully
appreciate the importance of using the correct
semaphore for the job. And,
unfortunately, misuse of any type of
semaphore may lead to unintended failures in
embedded systems, with severe
consequences in safety-critical medical
devices, avionics and transportation
equipment.
It's true that all types of semaphores have similarities in their implementation. However, each type should be used differently. Join me for a 1- hour TechOnline webinar on January 13 and I will show you how to use mutexes and semaphores safely and effectively and why it is important to always do so. |
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Embedded Programmers Earn Failing Grade in C ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In industry surveys, over 80% of embedded
software developers report using C or C++ as
their primary programming language. Yet as a
group, these programmers earned a failing
grade on a multiple-choice quiz testing
firmware-related C programming skills. A
scary result, considering that embedded
software inside medical devices, industrial
controls, anti-lock brakes, and cockpits place
human lives at risk every day.
Programmers in the United States scored slightly above average. But they still earned a failing grade of 61.8%. Programmers in India scored slightly below the worldwide average, at 58.9%. The rest of the world didn't do much better. |
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Dates Set for Embedded Software Boot Camps in Early 2010 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Register now for one of 4 upcoming sessions in Orlando, Florida (February 22-26); San Jose, California (March 15-19); Columbia, Maryland (April 12-16); or Chicago, Illinois (May 3-7). You will receive:
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Industry News and Useful Links ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The Lawyers are Coming! Could the quality of
your source code land you in court?
Embedded.com: http://bit.ly/5ZkaVN
Jack Ganssle presents some of the best programming-related quips and quotes. Fun! http://bit.ly/5JUrVn TechOnline just launched a Fundamentals of the x86 Architecture online course. Take it: http://bit.ly/5eOI3k Looking for up-to-date news & articles on RTOSes? Check out the RTOS Channel: http://bit.ly/4KzlEA The U.S. Navy aims to develop collision- avoidance system to enable unmanned aircraft to operate in civil airspace. Scary stuff! http://bit.ly/4hCp5M Did 'cosmic rays' cause Qantas A330 jet's injurious plunge? http://bit.ly/5u5YSS (I doubt it.) Did you know that the Nios II /e embedded processor core is now free? No license required! http://ow.ly/FqNf It seems engineering productivity is more influenced by employee happiness than by development methodology. Study: http://bit.ly/5oUA9h Are you an embedded C++ programmer? Test your skills in a quick free online quiz. Good luck: http://bit.ly/2ngIEh There's a useful article on RTOS features that can save (battery) power here: http://bit.ly/6xzkoc Looks like the semiconductor industry is a leader in the nascent economic recovery. http://bit.ly/8sEpqj China's engineers are remarkably unhappy with their career choice. http://bit.ly/6LgdAX Dream jobs: NASA seeks engineering students to help design new technologies for a manned lunar base! Apply: http://bit.ly/5EJjln LOL! Forget carbon offsets. Programmers, buy bad code offsets. http://codeoffsets.com/ Does ARM's powerful yet cheapo 32-bit Cortex-M0 spell the end for 8- and 16-bit microcontrollers? http://bit.ly/5MMmK6 "The Future of Healthcare is Robots!" --IEEE http://bit.ly/8bkr2P FDA reform could pose a danger to the 510(k) process. http://bit.ly/8kpYsy Everything you always wanted to know about embedded virtualization. Webcast: http://bit.ly/59da5A Curious what's inside Samsung's dual-display camera and what went into the design? Wonder no more: http://bit.ly/5RQuA1 Embedded Systems Conference Call for Abstracts. Chicago (June 2010): http://bit.ly/7O3wma and Bangalore (July 2010): http://bit.ly/5sQaFv |
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Jobs! Jobs! Jobs! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Things seem to be looking up in the job
market.
Medtronic (http://www.medtronic.com) is looking to hire a Principal Embedded Software Engineer to design, develop, and verify embedded real-time high reliability software systems for medical applications in a regulated environment. At least 7 years of experience in real-time embedded software design and verification is required as are a relevant degree and a willingness to relocate to Minneapolis. Job #70010. Apply: http://bit.ly/5bRwo4 Eurotech (http://www.eurotech-inc.com) is looking for a technical Product Manager to spearhead product improvements and new product development efforts, from concept to launch, including pricing and competitive analysis, marketing materials, and sales training. The ideal candidate has a BSEE and an MBA. They've also got openings for a Windows CE Software Engineer, a Senior Electronics Technician, and a Product Tester. See http://bit.ly/7OKNWi for all job details. The Johns Hopkins Applied Physics Laboratory (http://www.jhuapl.edu), a national leader in scientific research and development, located midway between Baltimore and Washington, DC is seeking a electrical engineer to design embedded systems with an emphasis on RF, analog, and digital circuit design. Find listing at: http://bit.ly/6H25PO (job #101540). |
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Please Forward This Newsletter ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I started the Firmware Update newsletter to
spread the word
about best practices for embedded software
architecture and
process. I hope you find it
informative as well as a fun and easy read. If
you do find it valuable, would you please take
just a moment of your time to tell your friends
and colleagues about Firmware Update?
Please use the "Forward e-mail" link near the bottom, or hit forward in your mail reader. I am grateful to you for reading and for your help in spreading the word.
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Quick Links ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Contact Us... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
email:
mbarr@netrino.com
phone:
866.78.EMBED
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