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Mastering Embedded Linux Programming, by Chris Simmonds
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Key Features
- Create efficient and secure embedded devices using Linux
- Minimize project costs by using open source tools and programs
- Explore each component technology in depth, using sample implementations as a guide
Book Description
Mastering Embedded Linux Programming takes you through the product cycle and gives you an in-depth description of the components and options that are available at each stage. You will begin by learning about toolchains, bootloaders, the Linux kernel, and how to configure a root filesystem to create a basic working device. You will then learn how to use the two most commonly used build systems, Buildroot and Yocto, to speed up and simplify the development process. Building on this solid base, the next section considers how to make best use of raw NAND/NOR flash memory and managed flash eMMC chips, including mechanisms for increasing the lifetime of the devices and to perform reliable in-field updates. Next, you need to consider what techniques are best suited to writing applications for your device. We will then see how functions are split between processes and the usage of POSIX threads, which have a big impact on the responsiveness and performance of the final device The closing sections look at the techniques available to developers for profiling and tracing applications and kernel code using perf and ftrace.
What you will learn
- Understand the role of the Linux kernel and select an appropriate role for your application
- Use Buildroot and Yocto to create embedded Linux systems quickly and efficiently
- Create customized bootloaders using U-Boot
- Employ perf and ftrace to identify performance bottlenecks
- Understand device trees and make changes to accommodate new hardware on your device
- Write applications that interact with Linux device drivers
- Design and write multi-threaded applications using POSIX threads
- Measure real-time latencies and tune the Linux kernel to minimize them
About the Author
Chris Simmonds is a software consultant and trainer who lives in southern England. He has been using Linux in embedded systems since the late 1990s, during which he has worked on many interesting projects, including a stereoscopic camera, intelligent weighing scales, various set-top boxes and home routers, and even a large walking robot.
He is a frequent presenter at open source and embedded conferences, including the Embedded Linux Conference, Embedded World, and the Android Builders' Summit. He has been conducting training courses and workshops in embedded Linux since 2002 and in embedded Android since 2010. He has delivered hundreds of sessions to many well-known companies. You can see some of his work on the "Inner Penguin" blog at www.2net.co.uk.
Table of Contents
Starting OutLearning About ToolchainsAll About BootloadersPorting and Configuring the KernelBuilding a Root FilesystemSelecting a Build SystemCreating a Storage StrategyIntroducing Device DriversStarting up - the init ProgramLearning About Processes and ThreadsManaging MemoryDebugging with GDBProfiling and TracingReal-time Programming - Sales Rank: #299024 in eBooks
- Published on: 2015-12-29
- Released on: 2015-12-29
- Format: Kindle eBook
About the Author
Chris Simmonds
Chris Simmonds is a software consultant and trainer who lives in southern England. He has been using Linux in embedded systems since the late 1990s, during which he has worked on many interesting projects, including a stereoscopic camera, intelligent weighing scales, various set-top boxes and home routers, and even a large walking robot. He is a frequent presenter at open source and embedded conferences, including the Embedded Linux Conference, Embedded World, and the Android Builders' Summit. He has been conducting training courses and workshops in embedded Linux since 2002 and in embedded Android since 2010. He has delivered hundreds of sessions to many well-known companies. You can see some of his work on the "Inner Penguin" blog at www.2net.co.uk.
Most helpful customer reviews
5 of 5 people found the following review helpful.
Coherent recipes for real world embedded Linux software construction
By Jim Fathman
Considering how widely embedded Linux is used, we might expect more books on the subject. In fact, there are precious few, and it seems fewer are published now than ten years ago. Why is that? There is no shortage of books on other popular programming topics. It may be that writing competently about embedded Linux requires broader knowledge and greater skill.
This new book Mastering Embedded Linux Programming is a surprisingly good book. The author clearly has deep experience and it shows in the selection, organization, and presentation of embedded Linux topics which include building cross toolchains, U-Boot, the Linux kernel, and Buildroot to generate the root filesystem. You need a platform to run these things and the author wisely offers examples on Beaglebone Black for actual hardware and QEMU for software platform emulation.
I have experience with these technologies and platforms, but had to scrape up and adapt information as best I could at the time, so I can readily recognize coherent recipes that bring it all together. This book does that exceedingly well and should prove most useful to any experienced or aspiring embedded Linux developer.
I am not just reading the book. I am working through the examples, trying the build examples on an inexpensive $5/month cloud server. (Tip - If you have limited memory on the build server, such as 512 MB on a cloud server, configure 2 GB Linux swap space since that is needed by the Linux build tools.) I have found the examples to be entirely accurate so far, which is uncommon for embedded Linux guides and speaks well of the care taken by the author and technical reviewers.
This book is professionally written, accurate, and highly recommended.
With the popularity of embedded Debian Linux on Raspberry Pi, Beaglebone, and many other embedded Linux platforms, we could use an embedded Linux book with Debian concentration, particularly with regard to the intricacies of the Debian package build system and deployment to IoT devices. I would love to see this author take on such a project.
1 of 1 people found the following review helpful.
Master the art of programming your toaster the hardcore way
By adnan baloch
The world of today is brimming with billions of devices (printers, webcams, home appliances etc.) running a form of the Linux OS called Embedded Linux. This particular flavor of Linux is customized for running in less than 16 megs of RAM and paltry amount of flash storage totalling a dozen megs or so. This might come as a rude surprise to anyone accustomed to gigs of RAM and terabytes of hard drive storage. Consequently, programming Embedded Linux requires throwing away old habits and learning how to make the most of available scarce resources. If you find yourself mulling a career in this challenging space, you just found the perfect book to take on your journey. The author starts from the basics and provides a concise overview of the norms in this field, from the CPU architectures to the major players manufacturing the chips. Though these architectures can be programmed for through using an emulator called QEMU, the author recommends getting the BeagleBone Black platform to get a hands-on experience to feel the real thing. Thankfully, this will be the only expense required since the software used throughout the book is open source. The author deals with the four facets of Embedded Linux: the toolchain (compilers, linkers etc.), the bootloader, the kernel and the root filesystem. Even though the reader will be trained on these aspects throughout the book, the author realises that doing this on a regular basis will be cumbersome for all but the most patient of people. Therefore, Buildroot and YoctoProject are explored showing how to automate the whole process. As long as low level systems programming in the C language is right up your alley, this book is your ticket to sailing all the way from development to debugging Embedded Linux solutions on any kind of supported hardware. The final chapter touches on real time programming, thus sweetening the pot even more.
2 of 2 people found the following review helpful.
Embedded Linux programming? You probably need this.
By Richard J. Wagner
This book contains a lot of great information for 'embedded' programmers. From toolchain selection to real-time programming, the author takes the reader through a list of relevant topics and offers sound advice. It's clear the author has mastered the topic, he shares the knowledge freely.
A lot of the material is expert level, but there is plenty here for b-flat Linux programmers with an interest in embedded programming. Topics include kernel issues, threading and processes, use of GDB, and more.
If you want to program for embedded Linux devices, this book should have a spot on your bookshelf.
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