Programming the BeagleBone电子书

Programming the BeagleBone

Table of Contents

Programming the BeagleBone

Credits

About the Author

Acknowledgment

About the Reviewers

www.PacktPub.com

Support files, eBooks, discount offers, and more

Why subscribe?

Free access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

1. Cloud9 IDE

BeagleBone hardware

BeagleBone White (BBW)

BeagleBone Black (BBB)

BeagleBone Green (BBG)

Installing Debian image on SD card

Setting up BeagleBone

Direct connection to monitor and keyboard

Ethernet over USB

Troubleshooting

Ethernet port or USB Wi-Fi adapter

Troubleshooting

VNC

Troubleshooting

Serial Connection

The bone101 page

Cloud9 IDE

Hello World program

Explanation

Summary

2. Blinking Onboard LEDs

Digital I/O

Digital I/O functions - pinMode() and digitalWrite()

Program to turn onboard LED ON and OFF

Program explanation

Quick program to blink onboard LED

Program explanation

Program execution

Make our program better

Program explanation

Dancing LEDs

Program explanation

Dancing LEDs in both directions

Program explanation

Summary

3. Blinking External LEDs

What is GPIO?

BeagleBone GPIO map

Blinking external LED circuit setup

Circuit analysis

Program to blink external LED

Explanation

Troubleshooting

Dancing external LEDs circuit setup

Circuit analysis

Program to dance external LEDs in both directions

Explanation

Summary

4. Controlling LED Using a Push Button

Reading from digital components

Push button circuit setup

Circuit analysis

Program to read from push button

Explanation

Reading via interrupts

Push button LED circuit setup

Circuit analysis

Program to control LED by push button

Explanation

Summary

5. Reading from Analog Sensors

Analog I/O

Reading from analog components

TMP36 temperature sensor circuit setup

Circuit analysis

Program to print temperature

Explanation

LDR circuit setup

Circuit analysis

Program to check light intensity

Explanation

Summary

6. PWM – Writing Analog Information

What is PWM?

BeagleBone's PWM

Writing on analog components

Fading LED circuit setup

Program to fade in and fade out LED

Explanation

Micro servo motor circuit setup

Program to control a micro servo motor

Explanation

Summary

7. Internet of Things with BeagleBone

Why the Internet of Things?

What is the Internet of Things?

Program for creating new Node.js HTTP server

HTML code

JavaScript code

Explanation

Troubleshooting

Program to control an LED through web browser

HTML code

Explanation

JavaScript code

Explanation

Controlling a servo motor through LAN

HTML code

JavaScript code

Sending an e-mail on over-temperature

Explanation

Troubleshooting

What's next?

Summary

8. Physical Computing in Python

Python programming in BeagleBone

Adafruit BBIO library

Program to blink external LEDs

Explanation

Program to dance external LEDs

Explanation

Program to read from push button

Explanation

Detecting button state using interrupt

Explanation

Program to print temperature

Explanation

A Program to check light intensity

Explanation

Program to fade in and fade out LED

Explanation

Program to control micro servo motor

Explanation

Summary

9. UART, I2C, and SPI Programming

Bus and bus protocols

What is UART?

Program to read/write on UART

Explanation

Troubleshooting

I2C protocol

Program to read from ADXL345 sensor

Explanation

Troubleshooting

SPI protocol

Program to write display text on Nokia 5110 LCD

Explanation

Summary

10. Internet of Things using Python

Flask web application framework

Installation

A program to display temperature remotely

Explanation

Troubleshooting

A program to control an LED through a web browser

Explanation

A RESTful web app to control servo motor

Explanation

A program to trigger an e-mail alert on over-temperature

Explanation

Troubleshooting

Upload server data on cloud and visualize

Explanation

What's next?

Security

Summary

A. GPIO Control in Bash

Explanation

Troubleshooting

B. BeagleBone Capes

C. Pinmux and the Device Tree

What is Pinmux?

What is the device tree?

Index