Raspberry Pi Computer Architecture Essentials by Dennis, Andrew K. -- Read -- Imperial Library of Trantor

Index

Raspberry Pi Computer Architecture Essentials

Table of Contents Raspberry Pi Computer Architecture Essentials Credits About the Author About the Reviewer www.PacktPub.com

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Preface

What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support

Downloading the example code Errata Piracy Questions

1. Introduction to the Raspberry Pi's Architecture and Setup

History and background of the Raspberry Pi

Raspberry Pi hardware specifications Dimensions System on Chip CPU GPU SDRAM 4 USB 2.0 ports and 1 SoC on-board USB MicroSD card port Ethernet port Audio GPIO pins Video – analog TV out Video – HDMI port

Basic hardware needed The microSD card – the main storage and boot device of the Raspberry Pi 2

Preinstalled microSD card versus creating your own The NOOBS operating system installation manager Downloading the latest version of Raspbian Setting up your microSD card and installing the Raspbian operating system Raspbian installation wrap-up Check SSH is running

RSA key generation for SSH

Linux and Mac RSA key generation Windows RSA key generation

Assign a static IP to your Raspberry Pi 2

Installing Screen and Vim

Vim – an optional handy text editor

Running tests on the OS and configuration changes

Diagnostic tests Over and underclocking the Raspberry Pi Going further – testing the GPIO pins

Some handy Linux commands Troubleshooting Summary

2. Programming on Raspbian

Which programming languages? Assembly language

Assembling and linking

The C and C++ languages

C – a brief introduction A quick look at C++ Our first C program

Geany – a handy text editor and development environment Creating a new C program

C libraries – a trove of reusable code The C (and C++) compiler Compiling and running our application

The Python language

A simple Python program Running a Python program from a file

Summary

3. Low-Level Development with Assembly Language

Back to basics

Multiline comments Directives Single line comments Registers Branching The assembler The linker Makefiles

Memory and addresses

The .data directive

The .balign directive Words Labels

The memory The addresses LDR and SUB Running our program

Adding power to our program – control structures

If else statements Iteration Testing our control structures

Summary

4. Multithreaded Applications with C/C++

What are threads?

Thread types

User level threads Kernel level threads Hybrid threads

POSIX threads Steps involved in implementing threads

Creation and termination Synchronization Scheduling

An example in C Trying out our program

A C++ equivalent

The g++ command

Going further – mutexes and joins

Compile and test

Summary

5. Expanding on Storage Options

Booting up Setting up the external HDD

Getting the disk name Setting up the HDD Modifying cmdline.txt

Network-attached storage (NAS)

Installing Samba Testing the NAS

Mac Linux Windows

Summary

6. Low-Level Graphics Programming

VideoCore IV GPU

Sample programs

Accessing the frame buffer

Check the display settings Testing our C code

Filling the screen with a color

A C program to turn the screen red Compile and run the C program

Drawing a line

Plotting pixels and drawing lines Compile and run Next steps – polygons

Summary

7. Exploring the Raspberry Pi's GPIO Pins

Introduction to GPIO pins

Standard GPIO I2C Serial Rx and Tx SPI PWM and PPM GPIO power voltages

Hardware choices

Prototyping shields and boards Cooking Hacks Arduino bridge shield Connecting directly to the GPIO pins

Switching an LED on and off

Setting up the hardware C blinking LED program Python blinking LED program Reading data from the GPIO pins in Python

Summary

8. Exploring Sound with the Raspberry Pi 2

Introduction to the Raspberry Pi's sound

Configuring the audio output Setting the audio output

Interacting with audio through GPIO

Installing the audio drivers Hardware setup Loading drivers Getting some drum tracks Python drum machine Audio shields for the Raspberry Pi

C and ALSA

ALSA examples

Introducing Sonic Pi

Setup Experimenting with Sonic Pi

Summary

9. Building a Web Server

Introduction to web servers

HTTP requests HTML

Popular web servers available on the Raspberry Pi

Apache NGINX

Building a Python web server

Python web server code Adding an index page and a favicon

Adding database support

SQLite SQL – a quick overview Python program with SQLite support Flask – displaying database data via Python Next steps

Summary

10. Integrating with Third-Party Microcontrollers

Genuino/Arduino microcontroller Setting up the Arduino software

Installing the IDE on your Raspberry Pi 2 A quick guide to the Arduino IDE

Integration with Arduino

Serial communication over USB Communication between the Arduino and Raspberry Pi via GPIO Communication over I2C Communication over the Web

Summary

11. Final Project

Choose your storage mechanism Building a Flask-based website

Adding a database A basic website Web forms

Add Edit

Adding in an LED

Building the circuit – a recap Integrating with our Python app

Extending the project further

Replace the LED with a screen E-mail support Playing a sound

Summary

Index

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