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Mastering Embedded Linux Programming

Mastering Embedded Linux Programming

By : Frank Vasquez, Chris Simmonds
4.6 (24)
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Mastering Embedded Linux Programming

Mastering Embedded Linux Programming

4.6 (24)
By: Frank Vasquez, Chris Simmonds

Overview of this book

If you’re looking for a book that will demystify embedded Linux, then you’ve come to the right place. Mastering Embedded Linux Programming is a fully comprehensive guide that can serve both as means to learn new things or as a handy reference. The first few chapters of this book will break down the fundamental elements that underpin all embedded Linux projects: the toolchain, the bootloader, the kernel, and the root filesystem. After that, you will learn how to create each of these elements from scratch and automate the process using Buildroot and the Yocto Project. As you progress, the book will show you how to implement an effective storage strategy for flash memory chips and install updates to a device remotely once it’s deployed. You’ll also learn about the key aspects of writing code for embedded Linux, such as how to access hardware from apps, the implications of writing multi-threaded code, and techniques to manage memory in an efficient way. The final chapters demonstrate how to debug your code, whether it resides in apps or in the Linux kernel itself. You’ll also cover the different tracers and profilers that are available for Linux so that you can quickly pinpoint any performance bottlenecks in your system. By the end of this Linux book, you’ll be able to create efficient and secure embedded devices using Linux.
Table of Contents (27 chapters)
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1
Section 1: Elements of Embedded Linux
10
Section 2: System Architecture and Design Decisions
18
Section 3: Writing Embedded Applications
22
Section 4: Debugging and Optimizing Performance

Summary

Embedded hardware will continue to get more complex, following the trajectory set by Moore's Law. Linux has the power and the flexibility to make use of hardware in an efficient way. Together we will learn how to harness that power so we can build robust products that delight our users. This book will take you through the five phases of the embedded project's life cycle, beginning with the four elements of embedded Linux.

The sheer variety of embedded platforms and the fast pace of development lead to isolated pools of software. In many cases, you will become dependent on this software, especially the Linux kernel that is provided by your SoC or board vendor, and, to a lesser extent, the toolchain. Some SoC manufacturers are getting better at pushing their changes upstream and the maintenance of these changes is getting easier. Despite these improvements, selecting the right hardware for your embedded Linux project is still an exercise fraught with peril. Open source license compliance is another topic you need to be aware when building products atop the embedded Linux ecosystem.

In this chapter, you were introduced to the hardware and some of the software you will use throughout this book (namely QEMU). Later on, we will examine some powerful tools that can help you create and maintain the software for your device. We cover Buildroot and dig deep into the Yocto Project. Before I describe these build tools, I will describe the four elements of embedded Linux, which you can apply to all embedded Linux projects, however they are created.

The next chapter is all about the first of these, the toolchain, which you need in order to compile code for your target platform.

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