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

The interrupt controller

Real-time systems have improved their accuracy thanks to the rapid evolution of modern embedded systems, in particular from the research on interrupt controllers. Assigning different priorities to interrupt lines guarantees a lower interrupt latency for higher-priority interrupt sources and makes the system react faster to prioritized events. Interrupts may, however, occur at any time while the system is running, including during the execution of another interrupt service routine. In this case, the interrupt controller provides a way to chain the interrupt handlers, and the order of execution depends on the priority levels assigned to the interrupt source.

One of the reasons for the popularity of the Cortex-M family of microprocessors among real-time and low-power embedded applications is perhaps the design of its programmable real-time controller—namely, the Nested Vector Interrupt Controller, or NVIC for short. The NVIC supports up to 240 interrupt...