Raspberry Pi 3 platform board (Derek Molloy, 2016). The Raspberry Pi
Beaglebone: GPIO Programming on ARM Embedded Linux
Raspberry PI: XBMC Home Media Player - Building the OpenELEC Linux Distribution
Beaglebone: Example Qt Embedded Linux Application
Exploring Raspberry Pi – Companion Site for the book Exploring Raspberry Pi
Exploring Raspberry Pi: Interfacing to the Real World with Embedded Linux
Writing a Linux Kernel Module — Part 1: Introduction
Chapter 6: Interfacing to the Raspberry Pi Input/Outputs – Exploring Raspberry Pi
Chapter 9: Enhancing the Input/Output Interfaces on the RPi – Exploring Raspberry Pi