book

AVR Workshop

Name: AVR Workshop
Author: John Boxall
ISBN: 9781718502581

by John Boxall

October 2022

Beginner to intermediate

368 pages

10h 18m

English

No Starch Press

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Cover
Title Page
Copyright Page
Dedication
About the Author
Brief Contents
Contents in Detail
Acknowledgments
Introduction
1: Getting Started
The Possibilities Are EndlessThe Microchip AVR MicrocontrollersRequired Parts and AccessoriesElectronic ComponentsChoosing an AVR ProgrammerRequired SoftwaremacOS 10.6 or LaterUbuntu Linux 20.04 LTS or LaterWindows 7 Through 11Current, Voltage, and PowerElectronic ComponentsResistorsLight-Emitting DiodesPower DiodesCapacitorsIntegrated CircuitsSolderless BreadboardsPowering Your Projects

2: First Steps
Testing the Hardware and ToolchainBuild the CircuitConnect and Run the ProgrammerWhat If It Didn’t Work?Project 0: Blinking an LEDUploading Your First AVR CodeWhat If It Didn’t Work?Controlling Digital OutputsHardware RegistersProject 1: Experimenting with ATtiny85 Digital OutputsThe HardwareThe CodeUsing Schematic DiagramsComponents in SchematicsWires in SchematicsDissecting a SchematicProject 2: Experimenting with ATmega328P-PU Digital OutputsThe HardwareThe CodeProject 3: Bit-Shifting Digital OutputsProject 4: Experimenting with NOTProject 5: Experimenting with ANDProject 6: Experimenting with ORProject 7: Experimenting with XOR
3: Getting and Displaying Input
Digital InputsIntroducing the PushbuttonReading the Status of Digital Input PinsProject 8: Blinking an LED on CommandThe HardwareThe CodeMaking Decisions in Codeif Statementsif . . . else StatementsMaking Two or More Comparisonsswitch . . . case StatementsCreating Your Own FunctionsProject 9: A Simple Custom FunctionProject 10: Custom Functions with Internal VariablesProject 11: Custom Functions That Return ValuesSwitch BounceProtecting Your AVR from Fluctuating VoltagesPullup ResistorsPulldown ResistorsIntroducing Seven-Segment LED DisplaysProject 12: Building a Single-Digit Numerical CounterThe HardwareThe CodeAnalog InputsUsing ATtiny85 ADCsProject 13: Making a Single-Cell Battery TesterThe HardwareThe CodeUsing the ATmega328P-PU ADCsIntroducing the Variable ResistorProject 14: Experimenting with an ATmega328P-PU ADCThe HardwareThe CodeDoing Arithmetic with an AVRUsing External PowerThe TMP36 Temperature SensorProject 15: Creating a Digital ThermometerThe HardwareThe Code
4: Communicating with the Outside World using the USART
Introducing the USARTHardware and Software for USART CommunicationProject 16: Testing the USARTThe HardwareThe CodeProject 17: Sending Text with the USARTProject 18: Sending Numbers with the USARTProject 19: Creating a Temperature Data LoggerThe HardwareThe CodeProject 20: Receiving Data from Your ComputerProject 21: Building a Four-Function Calculator
5: Taking Control with Hardware Interrupts
External InterruptsSetting Up Interrupts in CodeProject 22: Experimenting with Rising Edge InterruptsThe HardwareThe CodeProject 23: Experimenting with Falling Edge InterruptsThe HardwareThe CodeProject 24: Experimenting with Two InterruptsThe HardwareThe CodePin-Change InterruptsProject 25: Experimenting with Pin-Change InterruptsThe HardwareThe CodeProject 26: Creating an Up/Down Counter Using InterruptsThe HardwareThe CodeFinal Notes on Interrupts
6: Using Hardware Timers
Introducing TimersProject 27: Experimenting with Timer Overflow and InterruptsThe HardwareThe CodeProject 28: Using a CTC Timer for Repetitive ActionsProject 29: Using CTC Timers for Repetitive Actions with Longer DelaysExamining the Accuracy of the Internal TimerAddressing Registers with Bitwise OperationsAddressing Individual Bits in a RegisterAddressing Multiple Bits in a RegisterProject 30: Experimenting with Overflow Timers Using Bitwise Operations
7: Using Pulse-Width Modulation
Pulse-Width Modulation and Duty CyclesProject 31: Demonstrating PWM with the ATtiny85The HardwareThe CodeIndividual PWM Pin Control for the ATtiny85Project 32: Experimenting with Piezo and PWMThe HardwareThe CodeIndividual PWM Pin Control for the ATmega328P-PUThe RGB LEDProject 33: Experimenting with RGB LEDs and PWMThe Hardware
8: Controlling Motors with Mosfets
The MOSFETProject 34: DC Motor Control with PWM and MOSFETThe HardwareThe CodeProject 35: Temperature-Controlled FanThe HardwareThe CodeThe L293D Motor Driver ICProject 36: DC Motor Control with L293DThe HardwareThe CodeProject 37: Controlling a Two-Wheel-Drive Robot VehicleThe HardwareThe Code
9: Using the Internal EEPROM
Storing Bytes in EEPROMProject 38: Experimenting with the ATtiny85’s EEPROMStoring WordsProject 39: A Simple EEPROM DataloggerThe HardwareThe CodeStoring Floating-Point VariablesProject 40: Temperature Logger with EEPROMThe Hardware
10: Writing Your Own AVR Libraries
Creating Your First LibraryAnatomy of a LibraryInstalling the LibraryProject 41: Your First LibraryCreating a Library That Accepts Values to Perform a FunctionProject 42: Using the blinko2.c LibraryCreating a Library That Processes Data and Returns ValuesProject 43: Creating a Digital Thermometer with the thermometer.c Library
11: AVR and the SPI Bus
How Buses WorkPin Connections and VoltagesImplementing the SPI BusSending DataProject 44: Using the 74HC595 Shift RegisterThe HardwareThe CodeProject 45: Using Two 74HC595 Shift RegistersThe HardwareThe CodeProject 46: Using the MAX7219 LED Driver ICThe HardwareThe CodeProject 47: Adding a Reset ButtonMultiple SPI Devices on the Same BusReceiving Data from the SPI BusProject 48: Using the MCP3008 ADC ICThe HardwareThe Code
12: AVR and the I2C Bus
Increasing AVR SpeedIntroducing the I2C BusPin Connections and VoltagesWriting to I2C DevicesProject 49: Using the MCP23017 16-Bit I/O ExpanderThe HardwareThe CodeReading Data from I2C DevicesProject 50: Using an External IC EEPROMThe HardwareThe CodeProject 51: Using the DS3231 Real-Time ClockThe HardwareThe Code
13: AVR and Character Liquid Crystal Displays
Introducing LCDsSend Commands to the LCDInitialize the LCD for UseClear the LCDSet the CursorPrint to the LCDProject 52: Using a Character LCD with Your AVRThe HardwareThe CodeProject 53: Building an AVR-Based LCD Digital ClockThe HardwareThe CodeDisplaying Floating-Point Numbers on the LCDProject 54: LCD Digital Thermometer with Min/Max DisplayThe HardwareThe CodeDisplaying Custom Characters on the LCDWrite Data to CGRAMSend Custom Character Data to LCDDisplay Custom Characters on LCDProject 55: Displaying Custom LCD Characters
14: Controlling Servos
Setting Up Your ServoConnecting a ServoControlling a ServoProject 56: Experimenting with ServosThe HardwareThe CodeProject 57: Creating an Analog ThermometerThe HardwareThe CodeProject 58: Controlling Two ServosThe HardwareThe CodeProject 59: Building an Analog Clock with Servo HandsThe HardwareThe Code
Epilogue
Index

Overview

AVR Workshop is a comprehensive introduction to working with the Microchip AVR 8-bit family of microcontrollers – made famous through their use in Arduino and other compatible boards. Whether you’re an absolute beginner or longtime electronics enthusiast, this book gives you the latest coding and hardware knowledge required to build 60 projects.

Rather than relying on libraries that hide operations under the hood, AVR Workshop teaches the basic C programming skills you need to work directly with ATmega328P-PU and ATtiny85 microcontrollers. You’ll get your operation up and running, then go from blinking LEDs and handling various types of user input to creating real-time clocks and digital thermometers, and even controlling small motorized devices. Once you understand the basic properties of electricity and electronic components, you’ll learn how to:

•Detect input signals from external devices and put them to work
•Work with popular parts like LCDs, motors, servos, and interfacing chips
•Implement the SPI and I²C buses with AVR microcontrollers
•Send serial data between AVR and a computer with USART
•Use hardware interrupts, AVR timers, Pulse-Width Modulation, and EEPROM
•Write your own AVR libraries

Whether your aim is hobbyist tinkering or full product development, AVR Workshop will give you the skills to harness a wide variety of devices, sensors, motors, displays, and more with your AVR microcontroller and bring your own ideas to life.

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