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Programming the Raspberry Pi with Perl

Timm Murray and Steve Bertrand

Learn how to interact with the world using Perl and the Raspberry Pi.

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About the Book

Have you ever wondered how to make your garage door open over the Internet? Or maybe do facial recognition in real time from a camera? Log the temperature of a room? It's easier than you'd think, and Perl can help you do it.

Meant for current Perl programmers who want to expand into hardware programming. The examples are kept simple, so knowledgeable programmers in any language should be able to follow along.

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Computers and ProgrammingPerlComputer HardwareRaspberry PiHome AutomationInternet of Things

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Author

About the Authors

Timm Murray

Perl programmer with many years of experience and over 30 CPAN modules. Specializes in web development and hardware. Lives in Madison, WI with a lovely wife, and plays Warhammer 40k and Killer Queen.

Steve Bertrand

I've coded in Perl since 2001. I have 40+ published CPAN distributions, and currently author berrybrew. My main focus in Perl has been writing software to help the developer; test software, code examination software, and am the author of RPi::WiringPi and several distributions for various ICs and sensors for use on the Raspberry Pi.

Contents

Table of Contents

Introduction

  1. About the Raspberry Pi
  2. About Perl

Acknowledgements

Raspberry Pi Pinout

Let’s Get Down to Basics

  1. Raspberry Pi Models
  2. Tools

Basic Setup, AKA: The Hurry Up and Wait Chapter

GPIO and PWM

  1. Pin Numbers
  2. Simple Output
  3. Taking Input
  4. Asynchronous Input
  5. Pulse Width Modulation
  6. Servo Control

I²C - Connecting Your World Together

  1. Addresses and Registers
  2. Connecting the Board
  3. Reading a Datasheet
  4. The Actual Code

Temperature Sensor Logger

Serial Peripheral Interface

  1. Driving the MAX7219

GPS with UART

Working with Arduino over Firmata

The Pi Camera and GStreamer

  1. Getting a Still Image
  2. Continuous Capture
  3. Detecing Faces

Control Over HTTP

  1. Sequences
  2. Build Project: Garage Door Opener

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