Book Image

Raspberry Pi Computer Architecture Essentials

By : Andrew K. Dennis, Teemu O Pohjanlehto
Book Image

Raspberry Pi Computer Architecture Essentials

By: Andrew K. Dennis, Teemu O Pohjanlehto

Overview of this book

With the release of the Raspberry Pi 2, a new series of the popular compact computer is available for you to build cheap, exciting projects and learn about programming. In this book, we explore Raspberry Pi 2’s hardware through a number of projects in a variety of programming languages. We will start by exploring the various hardware components in detail, which will provide a base for the programming projects and guide you through setting up the tools for Assembler, C/C++, and Python. We will then learn how to write multi-threaded applications and Raspberry Pi 2’s multi-core processor. Moving on, you’ll get hands on by expanding the storage options of the Raspberry Pi beyond the SD card and interacting with the graphics hardware. Furthermore, you will be introduced to the basics of sound programming while expanding upon your knowledge of Python to build a web server. Finally, you will learn to interact with the third-party microcontrollers. From writing your first Assembly Language application to programming graphics, this title guides you through the essentials.
Table of Contents (18 chapters)
Raspberry Pi Computer Architecture Essentials
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Introduction to GPIO pins


The GPIO pins can be divided into a number of categories. These are:

  • Standard GPIO

  • I2C

  • Serial Rx and Tx

  • SPI

  • PWN and PPM

Let's begin by looking at the standard GPIO pins and understanding what they do. A diagram with a breakdown of the pins can be downloaded from https://www.raspberrypi.org/documentation/usage/gpio-plus-and-raspi2/images/physical-pin-numbers.png.

A general overview of the GPIO pins can also be found at the Raspberry Pi website at https://www.raspberrypi.org/documentation/hardware/raspberrypi/gpio/README.md.

Standard GPIO

The standard GPIO pins on your Raspberry Pi 2 provide an interface for other electronic devices you may wish to either control or read data from.

These pins can be configured as output or inputs. As you will in see in the Python and C programs we will write, it is possible to programmatically switch between the two.

One important thing to note is the numbering format. There are two different ways in which we can refer to the pins, via the GPIO...