Book Image

Embedded Programming with Modern C++ Cookbook

By : Igor Viarheichyk
Book Image

Embedded Programming with Modern C++ Cookbook

By: Igor Viarheichyk

Overview of this book

Developing applications for embedded systems may seem like a daunting task as developers face challenges related to limited memory, high power consumption, and maintaining real-time responses. This book is a collection of practical examples to explain how to develop applications for embedded boards and overcome the challenges that you may encounter while developing. The book will start with an introduction to embedded systems and how to set up the development environment. By teaching you to build your first embedded application, the book will help you progress from the basics to more complex concepts, such as debugging, logging, and profiling. Moving ahead, you will learn how to use specialized memory and custom allocators. From here, you will delve into recipes that will teach you how to work with the C++ memory model, atomic variables, and synchronization. The book will then take you through recipes on inter-process communication, data serialization, and timers. Finally, you will cover topics such as error handling and guidelines for real-time systems and safety-critical systems. By the end of this book, you will have become proficient in building robust and secure embedded applications with C++.
Table of Contents (17 chapters)

Using specialized memory

Embedded systems often provide access to their peripheral devices over specific ranges of memory addresses. When a program accesses an address in such a region, it does not read or write a value in memory. Instead, data is sent to a device or read from a device mapped to this address.

This technique is commonly named MMIO (short for memory-mapped input/output). In this recipe, we will learn how to access peripheral devices of the Raspberry PI using MMIO from userspace Linux applications.

How to do it...

The Raspberry PI has a number of peripheral devices that are accessible over MMIO. To demonstrate how MMIO works, our application will access the system timer:

  1. In your working ~/test directory...