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 devices connected via GPIO

General Purpose Input-Output (GPIO) is the simplest way of connecting peripheral devices to the CPU. Every processor usually has some number of pins reserved for general purposes. These pins can be electrically connected directly to the pins of a peripheral device. An embedded application can control the device by changing the signal level of the pins configured for output or by reading the signal level of the input pins.

The interpretation of the signal levels does not follow any protocol and is determined by the peripheral device. Developers need to consult the device datasheet to be able to program the communication properly.  

This type of communication is usually done on the kernel side using a dedicated device driver. This is, however, not always a requirement. In this recipe, we will learn how to...