Book Image

Embedded Systems Architecture - Second Edition

By : Daniele Lacamera
5 (1)
Book Image

Embedded Systems Architecture - Second Edition

5 (1)
By: Daniele Lacamera

Overview of this book

Embedded Systems Architecture begins with a bird’s-eye view of embedded development and how it differs from the other systems that you may be familiar with. This book will help you get the hang of the internal working of various components in real-world systems. You’ll start by setting up a development environment and then move on to the core system architectural concepts, exploring system designs, boot-up mechanisms, and memory management. As you progress through the topics, you’ll explore the programming interface and device drivers to establish communication via TCP/IP and take measures to increase the security of IoT solutions. Finally, you’ll be introduced to multithreaded operating systems through the development of a scheduler and the use of hardware-assisted trusted execution mechanisms. With the help of this book, you will gain the confidence to work with embedded systems at an architectural level and become familiar with various aspects of embedded software development on microcontrollers—such as memory management, multithreading, and RTOS—an approach oriented to memory isolation.
Table of Contents (18 chapters)
1
Part 1 – Introduction to Embedded Systems Development
4
Part 2 – Core System Architecture
8
Part 3 – Device Drivers and Communication Interfaces
13
Part 4 – Multithreading

Summary

In this chapter, we explored the typical components of an embedded operating system by implementing one from scratch, with the only purpose of studying the internals of the system, how the various mechanisms can be integrated into the scheduler, and how blocking calls, driver APIs, and synchronization mechanisms can be provided to tasks.

We then analyzed the components of two of the many very popular open-source, real-time operating systems for embedded microcontrollers, namely FreeRTOS and Riot OS, to highlight the differences in the design choices, implementation, and APIs provided for the applications to work with threads and memory management.

At this point, we can select the most appropriate OS for our architecture, and even write one ourselves when needed, by implementing our favorite scheduling, priority mechanisms, privilege separation between tasks and the kernel itself, and memory segmentation.

In the next chapter, we will take a closer look at Trusted Execution...