Book Image

Programming the BeagleBone

By : Yogesh Chavan, Amit Pandurang Karpe
Book Image

Programming the BeagleBone

By: Yogesh Chavan, Amit Pandurang Karpe

Overview of this book

The whole world is moving from desktop computers to smartphones and embedded systems. We are moving towards utilizing Internet of Things (IoT). An exponential rise in the demand for embedded systems and programming in the last few years is driving programmers to use embedded development boards such as Beaglebone. BeagleBone is an ultra-small, cost-effective computer that comes with a powerful hardware. It runs a full-fledged Debian Linux OS and provides numerous electronics solutions. BeagleBone is open source and comes with an Ethernet port, which allows you to deploy IoT projects without any additions to the board. It provides plenty of GPIO, Anlaog pins, and UART, I2C, SPI pins which makes it the right choice to perform electronics projects. This gives you all the benefits of Linux kernel such as multitasking, multiusers, and extensive device driver support. This allows you to do programming in many languages including high-level languages such as JavaScript and Python. This book aims to exploit the hardware and software capabilities of BeagleBone to create real-life electronics and IoT applications quickly. It is divided into two parts. The first part covers JavaScript programs. The second part provides electronics projects and IoT applications in Python. First, you will learn to use BeagleBone as tool to write useful applications on embedded systems. Starting with the basics needed to set up BeagleBone and the Cloud9 IDE, this book covers interfacing with various electronics components via simple programs. The electronics theory related to these components is then explained in depth before you use them in a program. Finally, the book helps you create some real-life IoT applications.
Table of Contents (21 chapters)
Programming the BeagleBone
Credits
About the Author
Acknowledgment
About the Reviewers
www.PacktPub.com
Preface
BeagleBone Capes
Index

Push button circuit setup


For this exercise, we will need:

  • 4-pin push button: A push button is an electronic component that is attached to two points in a circuit. It is also called a tact switch. When it is pressed, it joins these two points and the circuit is completed. The circuit is disconnected when the button is not pressed.

  • Male-to-male jumper wires: We need jumper wires to connect BeagleBone and components through a breadboard.

  • Half-size breadboard: A breadboard is needed to create a solderless circuit.

Power off the board and attach the components to BeagleBone as shown in the preceding diagram.

Circuit analysis

Let's see the analysis step by step:

  1. The 4-pin push button is divided into two sides. Within the first side, pole 1 and pole 2 are already connected. Another side has pole 3 and pole 4 connected. But these both sides are not connected to each other. When the button is pressed, the pole 1 and pole 2 side gets connected to the pole 3 and pole 4 side.

  2. Pin P9_3 and P9_4 are not regular...