beaglebone

Writing a Linux Kernel Module — Part 3: Buttons and LEDs

Introduction
In this series of articles I describe how you can write a Linux loadable kernel module (LKM) for an embedded Linux device. This is the third article in the series — please read:

Writing a Linux Kernel Module — Part 1: Introduction, and
Writing a Linux Kernel Module — Part 2: A Character Device,

before moving on to this article, as those articles […]

By |April 26th, 2015|Beaglebone, Blog, Linux|40 Comments

Writing a Linux Kernel Module — Part 2: A Character Device

Introduction
In this series of articles I describe how you can write a Linux loadable kernel module (LKM) for an embedded Linux device. This is the second article in the series — please read “Writing a Linux Kernel Module — Part 1: Introduction” before moving on to this article, as it explains how to build, load and unload loadable kernel modules […]

By |April 18th, 2015|Beaglebone, Blog, Linux|20 Comments

Writing a Linux Kernel Module — Part 1: Introduction

Introduction
In this series of articles I describe how you can write a Linux kernel module for an embedded Linux device. I begin with a straightforward “Hello World!” loadable kernel module (LKM) and work towards developing a module that can control GPIOs on an embedded Linux device (such as the BeagleBone) through the use of IRQs. I will add further follow-up […]

By |April 14th, 2015|Beaglebone, Blog, Linux|28 Comments

Introduction to CMake by Example

Introduction
This article provides a straightforward set of “Hello World!” introductions to using CMake for building C++ projects. All steps are performed using Linux on the BeagleBone platform, but the instructions are relevant to most Linux platforms.
The make utility and Makefiles provide a build system that can be used to manage the compilation and re-compilation of programs that are written in any programming […]

By |April 1st, 2015|Beaglebone, General, Linux|26 Comments

CGI using C++ on the BeagleBone (Ggicc)

Introduction
In Chapter 10 of my book (pg. 388-393), Exploring BeagleBone, I describe how you can build web-based CGI applications that can interface with electronics hardware that is attached to the BeagleBone using Bash scripts that call C/C++ programs. The solution works well for very straightforward applications, but this discussion investigates more advanced solutions for applications where there are more complex interactions — for example, […]

By |March 27th, 2015|Beaglebone, Embedded Systems, Linux, Raspberry PI|3 Comments

Exploring BeagleBone: Tools and Techniques for Building with Embedded Linux

This is what is keeping me busy at the moment… (very, very busy!). I have presently drafted 9 of the 14 chapters. This book on the BeagleBone is due for publication in Dec. 2014. A provisional description is available at: http://www.amazon.com/Exploring-BeagleBone-Techniques-Building-Embedded/dp/1118935128/
There is a website to support this book at: www.exploringbeaglebone.com
Derek.

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[This is a draft description, please see the website for the final description […]

By |June 18th, 2014|Beaglebone, Blog, General, Main Blog|60 Comments

Beaglebone: Controlling the on-board LEDs using Java

I have posted on how to do this exact thing using C++, so the first half is cut-and-pasted from Beaglebone: Controlling the on-board LEDs using C++
Introduction
One of the first things you would like to do when you connect to the Beaglebone Black is see that you are having an impact on the hardware. In this short post I am going […]

By |December 9th, 2013|Beaglebone, Blog|8 Comments

Running Java Applications on the Beaglebone Black

Before you start:
First check if the distribution has changed to have a package installation of open java – Perform:

And see the output after you search for java

There are libraries and javascript tools, but no core java distribution. Unfortunately, this means a manual install!
Here are the steps for installing the JRE:
Step 1. Download the Embedded JRE to your desktop PC:  Go to […]

By |October 26th, 2013|Beaglebone, Blog, Uncategorized|26 Comments

UDP Unicast and Multicast Streaming Video using the Beaglebone Black

Introduction
In a previous post, I described how you could set up the Beaglebone Black to capture video and process video using OpenCV with the Logitech C920 camera. In this post I am going to look at how you can begin streaming data using the camera and code that I had adapted previously. The previous post is here and the final instructional […]

By |July 12th, 2013|Beaglebone, Blog|32 Comments

Streaming Video using RTP on the Beaglebone Black

Introduction
In a previous post, I described how you could set up the Beaglebone Black to capture video and process video using OpenCV with the Logitech C920 camera. In this post I am going to look at how you can begin streaming data using the camera and code that I had adapted previously. The previous post is here and the final instructional page is […]

By |July 12th, 2013|Beaglebone, Blog|41 Comments