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)

Controlling I2C peripheral devices

Connecting devices over GPIO has one downside. A processor has a limited and relatively small number of pins available for GPIO. When you need to work with numerous devices or devices that provide complex functionality, you can run out of pins easily.

A solution is using one of the standard serial buses to connect peripheral devices. One of them is Inter-Integrated Circuit (I2C). This is widely used to connect various low-speed devices because of its simplicity and because a device can be connected with only two wires on the host controller.

The bus is well supported both on hardware and software levels. By using I2C peripherals, developers can control them from user-space applications without writing complex device drivers.

In this recipe, we will learn how to work with an I2C device on a Raspberry Pi board. We will use a popular and inexpensive...