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)

Generating a 5 kHz square signal using 8-bit auto-reload mode

In the preceding recipe, we learned how to create a simple ISR that only does a counter increment. Let's make the interrupt routine do something more useful. In this recipe, we will learn how to program the 8051 microcontroller so that it generates a signal with a given frequency.

The 8051 microcontroller has two timers  Timer 0 and Timer 1 – both of which are configured using two special function registers: Timer Mode (TMOD) and Timer Control (TCON). The timer's values are stored in the TH0 and TL0 timer registers for Timer 0 and the TH1 and TL1 timer registers for Timer 1. 

The TMOD and TCON bits have special meanings. The bits of the TMOD registers are defined as follows:

Bit Timer Name Purpose
0 0 M0 Timer mode selector – lower bit.
1 0 M1 Timer mode selector...