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)
Part 1 – Introduction to Embedded Systems Development
Part 2 – Core System Architecture
Part 3 – Device Drivers and Communication Interfaces
Part 4 – Multithreading

System configuration

A system that includes power consumption constraints in its specifications must be designed to meet the requirements in all its aspects, including hardware, software, and mechanical design. The selection of components and peripherals must take into account their energy profiles. External peripherals are often the most power-demanding components, and thus their power source must be interrupted by the microcontroller when they are not being used.

This section will describe the best practices concerning peripheral configuration, system clock settings, and voltage control, and their impact on power consumption.

Hardware design

In low-power embedded systems, the hardware design must include the possibility to power peripherals on or off using a GPIO pin. This is better done using a line that is normally low so that it can be pulled down using passive components when the GPIO is not driven by the microcontroller. MOSFETs are often used to control the power supplied...