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Beaglebone Essentials

By : Rodolfo Giometti
Book Image

Beaglebone Essentials

By: Rodolfo Giometti

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Beaglebone Essentials
Rodolfo Giometti
May, 2015 | 240 pages
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Table of Contents (18 chapters)
BeagleBone Essentials
BeagleBone Essentials
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Installing the Developing System
Installing the Developing System
Embedded world terms
A system overview
Checking out the preloaded tools
Setting up a developing system
(Re)Installing Debian
Summary
2
Managing the System Console
Managing the System Console
Getting access to the serial console
Basic system management
A quick tour of the bootloader
Summary
3
Compiling versus Cross-compiling
Compiling versus Cross-compiling
Native compilation versus cross-compilation
Compiling a user-space software package
Compiling the kernel
Summary
4
Quick Programming with Scripts
Quick Programming with Scripts
The GPIO subsystem
Managing an LED in PHP
Managing an LED in Python
Managing an LED in Bash
Summary
5
Device Drivers
Device Drivers
What is a device driver?
The modutils
Writing our own device driver
Summary
6
Serial Ports and TTY Devices
Serial Ports and TTY Devices
What is a serial port?
Implementation of serial ports
The serial ports in Linux
The communication parameters
A simple serial echo
Managing a real device
Summary
7
Universal Serial Bus – USB
Universal Serial Bus – USB
What is the Universal Serial Bus?
The electrical lines
The USB bus in Linux
Accessing the raw bus
Summary
8
Inter-integrated Circuit – IC
Inter-integrated Circuit – IC
What is the IC bus?
The electrical lines
The IC bus in Linux
Getting access to IC devices
Accessing the bus directly
Summary
9
Serial Peripheral Interface – SPI
Serial Peripheral Interface – SPI
What is the SPI bus?
The electrical lines
Getting access to the SPI devices
Accessing the raw bus
Summary
10
1-Wire Bus – W1
1-Wire Bus – W1
What is the 1-Wire bus?
The electrical lines
The 1-Wire bus in Linux
Getting access to 1-Wire devices
Summary
11
Useful System Daemons
Useful System Daemons
What is a daemon?
Useful and ready-to-use daemons
Writing a custom daemon
Summary
Index
Index

Chapter 4. Quick Programming with Scripts

In the previous chapter, we dealt with native compilation and cross-compilation, but sometimes, it is better to use a script to quickly solve a problem.

In this chapter, we will see how to install and use some common scripting languages in our new BeagleBone Black board, and then see how to solve a real problem by writing the solution in different languages (we'll present PHP, Python, and Bash) in order to show you the differences between them.

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