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Embedded Software Blog

Posts tagged with 'Linux'

10 Aug, 2012

Anil Khanna With apologies to Shakespeare, let me start off by clarifying that we are referring to Free/Libre Open Source Software; about how it is changing the embedded landscape and more importantly the ideas on efficient ways to benefit from this constant stream of innovation. Very few fields in technology have felt such an impact from open source movement as has embedded software design. The proliferation of … Read More

GNU, Linux, Yocto, OSS

30 Jul, 2012

Colin Walls From time to time I am pleased to receive submissions from colleagues, who can give different perspectives on embedded software. This week, Carlos O’Donell is talking about software standards and why we should all care about them … My name is Carlos O’Donell and I work for Mentor Embedded as part of the Sourcery CodeBench team, in addition to that I volunteer my time as a GNU C Library … Read More

Linux, CodeBench

16 Apr, 2012

Colin Walls I have historically been somewhat skeptical about open source software [OSS]. I am always wary of anything that is “free” and subscribe to the TANSTAAFL ["there ain't no such thing as a free lunch"] principle. It has taken me quite a few years to understand that open software is not free – it is just a different business model from the usual “we make it, you buy it” approach. I … Read More

Linux, Nucleus

26 Mar, 2012

ESC imminent

Posted by Colin Walls

Colin Walls Well, tomorrow is the big day. ESC San Jose 2012 [now part of DESIGN West] runs for 3 days and looks set to be an excellent show for anyone interested in embedded systems software or hardware. I recently outlined our plans for the Mentor Embedded booth, but we now have more details … Our booth is set to be a hive of activity, with a continuous program of technical briefings in the theater and … Read More

Nucleus, Embedded Systems Conference, DESIGN West, Linux, Yocto

19 Mar, 2012

Not the Embedded Systems Conference

Posted by Colin Walls

Colin Walls Next week, the Embedded Systems Conference will take place in San Jose, California. Except that it has a new name: ESC is now part of DESIGN West, which is an aggregate of a number of conferences. Personally, I do not care for the new name, as the word “design” has a very broad meaning way beyond electronic systems. But I guess I will get used to it. The event will be interesting from many … Read More

Embedded Systems Conference, DESIGN West, Linux

21 Nov, 2011

What is the plural of Linux?

Posted by Colin Walls

Colin Walls Somebody asked me: “What is the plural of Linux?” Maybe it is Linuxes. That sounds a bit messy, which seems rather appropriate really… If we think about the desktop world and buying application software, you might have a Windows PC or a Mac or perhaps you run Linux. It is typical for the spec for an application to discuss hardware and OS compatibility. There will normally be ridiculously … Read More

Linux, Nucleus, RTOS

24 Oct, 2011

Dennis Ritchie and C for embedded

Posted by Colin Walls

Colin Walls I was, of course, saddened to hear the recent news of the death of Steve Jobs. Since then, the Internet has been buzzing with stories, anecdotes and speculation about him. As a result, the news of the death of another key figure in the computing world barely got a mention: Dennis Ritchie died on 12 October 2011. Although not so much of a household name as Jobs, there are many [including myself] who … Read More

Dennis Ritchie, Steve Jobs, Linux

19 Sep, 2011

C libraries

Posted by Colin Walls

Colin Walls For a software developer, the idea of a library is quite simple: It is a file containing a [typically large] number of functions/procedures/subroutines in a special format. At link time, the linker looks in the library [or there may well be more than one, in which case it checks each in turn] to resolve any references to functions not satisfied by the supplied object modules. This means that the programmer … Read More

Development Tools, libraries, Linux

23 Aug, 2011

Web seminar

Posted by Colin Walls

Colin Walls Just a quick “heads up”. If you are interested in the selection of an operating system for embedded applications [a topic I discussed briefly here] you might like to attend a Web seminar that I am presenting later this week. The session will be less than one hour, including live Q&A. The live session will be on Thursday at 9:00 Pacific and an archive recording will be available after … Read More

Linux, multi-core, RTOS, Multi-OS, Nucleus

15 Aug, 2011

Monolithic or not

Posted by Colin Walls

Colin Walls

All my working life, I have had a challenge with explaining to people what I actually do. It all starts with defining what is an embedded system. As I have discussed before, this is by no means easy. I thought that this might become simpler over time, as embedded systems become even more ubiquitous, but the reverse is true. The definition is getting even fuzzier. It has reached a point where software

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RTOS, Linux

20 Jun, 2011

On the move

Posted by Colin Walls

Colin Walls I recently talked about the process that might be applied to the selection of an embedded operating system and I hope that these guidelines are useful. I am currently working on a Web seminar on this topic, so I would welcome any input. However, developers tend to stick with a particular OS [or, at least, with a particular OS vendor] – recent research suggested that only about 20% of developers … Read More

Linux, API, RTOS, Nucleus

18 Apr, 2011

Colin Walls I was recently approached for help by a Mentor Graphics customer, who was planning a new project and needed to select an operating system. They wanted guidance with that choice. Of course, one is tempted to say that it does not matter which of our products they chose [as, between them, Nucleus RTOS and Mentor Embedded Linux do cover most possibilities], but I felt they needed something more objective. There … Read More

Windows CE, Source Code, Linux, Low Power, RTOS, Networking, Nucleus

30 Mar, 2011

Introducing OpenMCAPI

Posted by Hollis Blanchard

Hollis Blanchard

Mentor recently shared OpenMCAPI, our MCAPI implementation, with the world under an open source license (BSD). We’re proud of it because it was especially designed for portability, and while it’s sophisticated enough to offer advanced features like asynchronous communication, it’s simple enough that it can be easily understood and deployed on low-resource embedded systems. So what

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Multi-OS, MCAPI, Multicore, AMP, Linux

6 Dec, 2010

More uses for an MMU

Posted by Colin Walls

Colin Walls Some time ago, I wrote about the use of a memory management unit (MMU) for embedded applications and covered the basics of what such a device can do. Recent comment on that posting inspired me to think more about how an MMU may be used more creatively. The basic function of an MMU is to control a relationship between the addresses that a CPU uses to access specific memory areas and their actual physical … Read More

Linux, memory management unit, RTOS, MMU, Nucleus

6 Sep, 2010

The one line RTOS

Posted by Colin Walls

Colin Walls I like simple things. Excessive complexity tends to annoy me. When I first started working with computers, I thought that mainframes were overly complicated, so I was pleased to discover minicomputers, where I could really understand exactly what was going on. Embedded software was a natural progression, as, again, I could grasp the entire functionality of the software. But that began to change, as … Read More

Linux, Android, Nucleus, RTOS

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