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  • Book Overview & Buying Beaglebone Essentials
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Beaglebone Essentials

Beaglebone Essentials

By : Rodolfo Giometti
5 (2)
Buy this Book
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Beaglebone Essentials

Beaglebone Essentials

5 (2)
By: Rodolfo Giometti
Buy this Book

Overview of this book

If you are a developer with some hardware or electrical engineering experience who wants to learn how to use embedded machine-learning capabilities and get access to a GNU/Linux device driver to collect data from a peripheral or to control a device, this is the book for you.
Table of Contents (13 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Installing the Developing System
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1. Installing the Developing System
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Embedded world terms
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A system overview
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Checking out the preloaded tools
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Setting up a developing system
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(Re)Installing Debian
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Summary
2
2. Managing the System Console
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2. Managing the System Console
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Getting access to the serial console
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Basic system management
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A quick tour of the bootloader
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Summary
3
3. Compiling versus Cross-compiling
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3. Compiling versus Cross-compiling
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Native compilation versus cross-compilation
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Compiling a user-space software package
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Compiling the kernel
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Summary
4
4. Quick Programming with Scripts
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4. Quick Programming with Scripts
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The GPIO subsystem
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Managing an LED in PHP
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Managing an LED in Python
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Managing an LED in Bash
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Summary
5
5. Device Drivers
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5. Device Drivers
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What is a device driver?
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The modutils
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Writing our own device driver
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Summary
6
6. Serial Ports and TTY Devices
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6. Serial Ports and TTY Devices
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What is a serial port?
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Implementation of serial ports
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The serial ports in Linux
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The communication parameters
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A simple serial echo
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Managing a real device
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Summary
7
7. Universal Serial Bus – USB
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7. Universal Serial Bus – USB
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What is the Universal Serial Bus?
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The electrical lines
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The USB bus in Linux
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Accessing the raw bus
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Summary
8
8. Inter-integrated Circuit – I2C
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8. Inter-integrated Circuit – I2C
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What is the I2C bus?
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The electrical lines
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The I2C bus in Linux
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Getting access to I2C devices
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Accessing the bus directly
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Summary
9
9. Serial Peripheral Interface – SPI
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9. Serial Peripheral Interface – SPI
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What is the SPI bus?
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The electrical lines
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Getting access to the SPI devices
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Accessing the raw bus
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Summary
10
10. 1-Wire Bus – W1
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10. 1-Wire Bus – W1
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What is the 1-Wire bus?
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The electrical lines
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The 1-Wire bus in Linux
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Getting access to 1-Wire devices
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Summary
11
11. Useful System Daemons
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11. Useful System Daemons
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What is a daemon?
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Useful and ready-to-use daemons
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Writing a custom daemon
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Summary
12
Index
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Index

Writing a custom daemon

As seen earlier, our BeagleBone Black has a lot of ready-to-use software, and a lot of readily available daemons that are useful for a lot of different tasks. However, we are developers, and if we have to develop some controlling or monitoring systems, it's quite normal that we should need a custom daemon to do our custom job.

In this last section, we'll see how to write our own daemon in several programming languages using a daemon skeleton that can be used to develop really complex daemons. Due to a lack of space, I cannot add all the possible features a daemon has, but the presented skeletons will have whatever you need to know about the daemon's creation.

All the example codes will implement a daemon with the following command line usage:

usage: mydaemon [-h] [-d] [-f] [-l]
    -h    - show this message
    -d    - enable debugging messages
    -f    - do not daemonize
    -l    - log on stderr

The -h option argument will show the help message, while...

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Programming languages
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Beaglebone Essentials
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