You're reading from Mastering Embedded Linux Programming Create fast and reliable embedded solutions with Linux 5.4 and the Yocto Project 3.1 (Dunfell)

Product type Paperback

Published in May 2021

Publisher Packt

ISBN-13 9781789530384

Length 758 pages

Edition 3rd Edition

Languages

C++

Tools

Linux

Concepts

Embedded Systems

Authors (2):

Frank Vasquez

Mr. Chris Simmonds

View More author details

Table of Contents (27) Chapters

Preface

1. Section 1: Elements of Embedded Linux

2. Chapter 1: Starting Out FREE CHAPTER

3. Chapter 2: Learning about Toolchains

4. Chapter 3: All about Bootloaders

5. Chapter 4: Configuring and Building the Kernel

6. Chapter 5: Building a Root Filesystem

7. Chapter 6: Selecting a Build System

8. Chapter 7: Developing with Yocto

9. Chapter 8: Yocto Under the Hood

10. Section 2: System Architecture and Design Decisions

11. Chapter 9: Creating a Storage Strategy

12. Chapter 10: Updating Software in the Field

13. Chapter 11: Interfacing with Device Drivers

14. Chapter 12: Prototyping with Breakout Boards

15. Chapter 13: Starting Up – The init Program

16. Chapter 14: Starting with BusyBox runit

17. Chapter 15: Managing Power

18. Section 3: Writing Embedded Applications

19. Chapter 16: Packaging Python

20. Chapter 17: Learning about Processes and Threads

21. Chapter 18: Managing Memory

22. Section 4: Debugging and Optimizing Performance

23. Chapter 19: Debugging with GDB

24. Chapter 20: Profiling and Tracing

25. Chapter 21: Real-Time Programming

26. Other Books You May Enjoy

Chapter 12: Prototyping with Breakout Boards

Custom board bring-up is what embedded Linux engineers are called on to do time and time again. A consumer electronics manufacturer wants to build a new device and, more often than not, that device needs to run Linux. The process of assembling the Linux image typically starts before the hardware is ready, and is done using prototypes that are wired together from development and breakout boards. Peripheral I/O pins need to be muxed into device tree bindings for working communications. Only then can the task of coding middleware for an application begin.

Our goal in this chapter is to add a u-blox GPS module to the BeagleBone Black. This requires reading schematics and data sheets so that necessary modifications to the device tree source can be generated using Texas Instruments' SysConfig tool. Next, we will wire up a SparkFun GPS Breakout board to the BeagleBone Black and probe the connected SPI pins with a logic analyzer. Lastly...