Posts tagged with 'Linux'
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
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
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
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
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
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
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
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
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 … Read More
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
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
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 … Read More
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
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
I have pondered before the appropriateness of Linux for embedded applications. My initial stance was clear enough: I could see very little sense in it. Why use a desktop operating system in such a completely different context? Over the years, the popularity of embedded Linux has increased, the technology of embedded systems has moved on and I have reappraised my views accordingly. With Mentor Embedded … Read More