Programming Category - Page 25 of 43 - CNX Software

January 17, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Yocto Project Overview and Update – ELCE 2012

Last post about ELCE 2012 videos… David Stewart, manager of the Yocto Project team within the Open Source Technology Center at Intel, gives an introduction to the Yocto Project, as well as a status update at ELCE 2012. Abstract: The Yocto Project is a joint project to unify the world’s efforts around embedded Linux and to make Linux the best choice for embedded designs. The Yocto Project is an open source starting point for embedded Linux development which contains tools, templates, methods and actual working code to get started with an embedded device project. In addition, the Yocto Project includes Eclipse plug-ins to assist the developer. This talk gives a walk-through of the key parts of the Yocto Project for developing embedded Linux projects. In addition, features will be described from the latest release of the Yocto Project, v1.3. The talk will include demos of some of the key new […]

January 16, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Qt on Embedded Systems – ELCE 2012

Lars Knoll, chief maintainer for the Qt Project, gives a presentation about Qt on embedded systems, including a demo with the Raspberry Pi at the Embedded Linux Conference Europe 2012 in Barcelona, Spain. Abstract: For well over 10 years, Qt has been used in many types of embedded devices, ranging from high-end medical systems, through mobile phones and smartphones, all the way to simple devices like coffee makers. This presentation will show some of the work that has been put in Qt throughout the years to support embedded devices, some of the challenges that the development team faced in order to bring a fully-featured desktop toolkit to resource-limited devices, along with solutions they came up with. Time permitting, the presenter will also show Qt demos running on an embedded device. This session is intended for embedded application developers looking to make use of the capabilities of recent hardware, as well […]

January 16, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

BoFs: Developer Tools and Methods: Tips & Tricks – ELCE 2012

Tim Bird, senior staff software engineer at Sony Network Entertainment, hosts a BoF session about tools & methods for embedded Linux developers at ELCE 2012. Abstract: In this Birds-of-a-Feather-session, Tim will share some of his favorite tips for developing embedded Linux software. This will include tips for using ‘git’, how he does multi-platform development, and tips for other tools that other developers might find useful. Prior to the event, Tim will do a survey and solicit ideas from other developers as well. Please come to this BoF prepared to share your own productivity tips for embedded Linux development. Tim talks is divided into the following key points: Git tips – How to finds info about commits (git log, git show), use aliases (e.g. for colored output), find a commit that caused problem (git bisect), and more Patch management – quilt patch managing tool, diffinfo, and splitpatch (to break patches apart) […]

January 16, 2013November 23, 2014 by Jean-Luc Aufranc (CNXSoft) - No Comments

Understanding PREEMPT_RT (The Real-Time Patch) – ELCE 2012

Steven Rostedt, working at Red Hat, talks about Real-Time Linux at the Embedded Linux Conference Europe, in Spain on November 6, 2012. Abstract: The real-time patch (which provides CONFIG_PREEMPT_RT), has been around since 2005. Started by Ingo Molnar and maintained by Thomas Gleixner and several others, it has grown from a hobby RTOS into a very serious contender. Several distributions (Red Hat, SuSE, Debian, Ubuntu) supply a kernel version that includes this patch. The embedded world has started adding the -rt patch to their own devices that they ship. But do the embedded developers understand what the -rt patch supplies? Programming for real time, and especially when writing kernel code requires special knowledge to avoid real time traps. This talk will explain what the real time patch provides and special programming tips that will ensure embedded developers will get the best from their devices. He goes through the following key […]

January 16, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Your New ARM SoC Linux Support Check-List – ELCE 2012

Thomas Petazzoni, embedded Linux engineer and trainer at Free Electrons, describes the steps he followed to add a new Marvell SoC to the mainline kernel at ELCE 2012. Abstract: Since Linus Torvalds raised warnings about the state of the ARM architecture support in the Linux kernel, a huge amount of effort and reorganization has happened in the way Linux supports ARM SoCs. From the addition of the device tree to the pinctrl subsystem, from the new clock framework to the new rules in code organization and design, the changes have been significant over the last one and half year in the Arm Linux kernel world. Based on the speaker’s experience on getting the support for the new Marvell Armada 370 and Armada XP SoC support in the mainline Linux kernel, we will give an overview of those changes and summarize the new rules for ARM Linux support. We aim at […]

January 15, 2013January 15, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Porting Android 4.0 to a Custom Industrial Board Based on TI OMAP 3 – ELCE 2012

Matthias Brugger, embedded engineer at ISEE, describes the steps the company had to follow (referred to as a “war story”) to port Android 4.0 to a custom industrial board at ELCE 2012, Barcelona, on November 5, 2012. Abstract: This talk will explain the lessons learned by giving a step-by-step introduction of porting Android to a custom board which was designed for an industrial environment. This includes an introduction to the Android build environment, first board bring-up and peripheral integration. The talk will cover bootloader integration, power management. It will focus on the peculiarities configuring Ethernet and Wi-Fi in Android. Also button and display integration, as well as integration of third-party accelerator support will be explained. Android devices are getting popular not only in the mobile market but although in the industrial environment. Porting Android to a custom board can be challenging, especially as little information about Android internals are available. […]

January 15, 2013January 15, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Device Tree and its Stumbling Blocks – ELCE 2012

Wolfram Sang, kernel developer for embedded systems at Pengutronix, talks about Device trees and conflicts and pitfalls he experienced as a kernel developer and I2C subsystem maintainer. This is one of several talks about Device trees at ELCE 2012. Abstract: Since ARM started to use device trees, their impact on various subsystems in the kernel has been increasing significantly. Because they became the de-facto standard, everybody wants them soon. Because they need a ton of conversions and adaptions, a lot of questions are still unresolved. This carries potential for conflicts.Wolfram has dealt with device trees already on PowerPC and still does on ARM. Additionally, he co-maintains the I2C subsystem which is affected by device tree conversions, too. Knowing both sides, as developer and as maintainer, he will talk about stumbling blocks experienced so far, e.g. typical pitfalls when inventing bindings or the high pace. A number of examples will be […]

January 15, 2013January 15, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Embedded Linux Boot Time Optimizations – ELCE 2012

Alexandre Belloni, embedded Linux engineer and trainer at Adeneo Embedded, gives a presentation about different techniques to optimize boot time for Embedded Linux at ELCE 2012. He also explains how they’ve measured the boot time. Abstract: A common problem faced when embedding Linux is the long boot time before the system is functional. There are many ways to improve boot up time. For a particular project, we had to answer a CAN message from Linux userspace in less than 420 ms from going out of CPU reset. We will describe our methodology and the techniques we finally chose to implement in that particular use case. We will also detail how we measured the boot time efficiently. A live demo will show the results of our work. More specifically, Alexandre discusses two projects at Adeneo where boot time was critical: An automotive platform based on Freescale i.mx53 needs to reply to […]