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

Switching an LED on and off


Our first project is going to be to attach an LED and resistor to the GPIO pins and switch the LED on and off.

We will look at how we can do this using both C and Python. Let's get started setting up the hardware.

Setting up the hardware

In order to build this project you will need the following components:

  • LED

  • 270 Ohm Resistor

  • Breadboard

  • Wires

We will setup the circuit as follows; you can refer back to this diagram as needed:

Start by powering down your Raspberry Pi. Next, you will need to attach the wires from the GPIO pins to the breadboard. You will need one from a ground pin and one from a regular GPIO pin, such as number 4.

Next, we need to add the LED and resistor to the breadboard. The resistor is used to prevent the LED from burning out.

These should be configured as per the diagram, so that the GPIO pin wire attaches to the resistor, the resistor is connected to the LED, and finally the LED is connected to the ground pin wire.

Once we have this setup, we are ready...