AVR Workshop: A Hands-On Introduction with 60 Projects

548 Pages·2022·51.099 MB·English

by  John Boxall

AVR WORKSHOP
AVR WORKSHOP
A Hands-on Introduction with 60 Projects
by John Boxall
San Francisco
AVR WORKSHOP. Copyright © 2023 by John Boxall.
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photocopying, recording, or by any information storage
or retrieval system, without the prior written permission of the copyright owner and the publisher.
First printing
26 25 24 23 22 1 2 3 4 5
ISBN-13: 978-1-7185-0258-1 (print)
ISBN-13: 978-1-7185-0259-8 (ebook)
Publisher: William Pollock
Managing Editor: Jill Franklin
Production Manager: Rachel Monaghan
Developmental Editor: Abigail Schott-Rosenfield
Production Editor: Rachel Monaghan
Cover and Interior Design: Octopod Studios
Technical Reviewer: Xander Soldaat
Copyeditor: Rachel Head
Production Services: Scribe Inc.
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Starch Press, Inc. directly at [email protected] or:
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The information in this book is distributed on an “As Is” basis, without warranty. While every
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alleged to be caused directly or indirectly by the information contained in it.
To Cyril, John, David, and all the people who enjoy making something out
of nothing.
About the Author
John Boxall has been an electronics enthusiast for over 30 years, spending
much of that time in the electronics retail, wholesale, and consulting fields.
He also spent several years writing Arduino tutorials, projects, and reviews
of kits and accessories at https://tronixstuff.com. Arduino Workshop (No
Starch Press, 2013) was his first book.
About the Technical Reviewer
Xander Soldaat is a former Mindstorms Community Partner for LEGO®
MINDSTORMS. He has a deep background in IT infrastructure
architecture, as well as embedded systems, compiler, and STEM curriculum
development. He is currently an OpenShift Cloud Success Architect at Red
Hat. In his spare time he likes to tinker with robots, electronics, retro
computers, and table-top games.
BRIEF CONTENTS
Acknowledgments
Introduction
Chapter 1: Getting Started
Chapter 2: First Steps
Chapter 3: Getting and Displaying Input
Chapter 4: Communicating with the Outside World using the USART
Chapter 5: Taking Control with Hardware Interrupts
Chapter 6: Using Hardware Timers
Chapter 7: Using Pulse-Width Modulation
Chapter 8: Controlling Motors with Mosfets
Chapter 9: Using the Internal EEPROM
Chapter 10: Writing Your Own AVR Libraries
Chapter 11: AVR and the SPI Bus
Chapter 12: AVR and the I2C Bus
Chapter 13: AVR and Character Liquid Crystal Displays
Chapter 14: Controlling Servos
Epilogue
Index
CONTENTS IN DETAIL
Acknowledgments
Introduction
1: Getting Started
The Possibilities Are Endless
The Microchip AVR Microcontrollers
Required Parts and Accessories
Electronic Components
Choosing an AVR Programmer
Required Software
macOS 10.6 or Later
Ubuntu Linux 20.04 LTS or Later
Windows 7 Through 11
Current, Voltage, and Power
Electronic Components
Resistors
Light-Emitting Diodes
Power Diodes
Capacitors
Integrated Circuits
Solderless Breadboards
Powering Your Projects
2: First Steps
Testing the Hardware and Toolchain
Build the Circuit
Connect and Run the Programmer
What If It Didn’t Work?
Project 0: Blinking an LED
Uploading Your First AVR Code
What If It Didn’t Work?
Controlling Digital Outputs
Hardware Registers
Project 1: Experimenting with ATtiny85 Digital Outputs
The Hardware
The Code
Using Schematic Diagrams
Components in Schematics
Wires in Schematics
Dissecting a Schematic
Project 2: Experimenting with ATmega328P-PU Digital Outputs
The Hardware
The Code
Project 3: Bit-Shifting Digital Outputs
Project 4: Experimenting with NOT
Project 5: Experimenting with AND
Project 6: Experimenting with OR
Project 7: Experimenting with XOR
3: Getting and Displaying Input
Digital Inputs
Introducing the Pushbutton
Reading the Status of Digital Input Pins
Project 8: Blinking an LED on Command
The Hardware
The Code
Making Decisions in Code
if Statements
if . . . else Statements
Making Two or More Comparisons
switch . . . case Statements
Creating Your Own Functions
Project 9: A Simple Custom Function
Project 10: Custom Functions with Internal Variables
Project 11: Custom Functions That Return Values
Switch Bounce
Protecting Your AVR from Fluctuating Voltages
Pullup Resistors
Pulldown Resistors