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GNU/Linux Rapid Embedded Programming

You're reading from GNU/Linux Rapid Embedded Programming

Product type Book

Published in Mar 2017

Publisher Packt

ISBN-13 9781786461803

Pages 732 pages

Edition 1st Edition

Languages

Concepts

System Programming

Author (1):

Rodolfo Giometti

Table of Contents (26) Chapters

GNU/Linux Rapid Embedded Programming

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Preface

Installing the Developing System

Managing the System Console

C Compiler, Device Drivers, and Useful Developing Techniques

Quick Programming with Scripts and System Daemons

Setting Up an Embedded OS

General Purposes Input Output signals – GPIO

Serial Ports and TTY Devices - TTY

Universal Serial Bus - USB

Inter-Integrated Circuits - I2C

Serial Peripheral Interface - SPI

1-Wire - W1

Ethernet Network Device - ETH

Wireless Network Device - WLAN

Controller Area Network - CAN

Sound Devices - SND

Video devices - V4L

Analog-to-Digital Converters - ADC

Pulse-Width Modulation - PWM

Miscellaneous Devices

Sound in Linux

The sound support in Linux bears with the Open Sound System (OSS), which is also available for several UNIX-like systems. However, around 1998, this system lacked some important functionalities for a good sound system, such as MIDI hardware support, multiple audio channel mixing, and full duplex operations. That's why, a new API was born trying to solve these issues: the Advanced Linux Sound Architecture (ALSA).

Starting from kernel release 2.6, the ALSA replaced the OSS architecture even if, during that time, several improvements were into the OSS implemented too.

The ALSA architecture has hardware MIDI support, multiple audio channel mixing, and full duplex operations, and it's designed to work well on multiprocessor systems since it's thread safe. The ALSA's API is really complex (especially compared with the OSS one), but it allows developers to do incredible things with it, especially using the related user-space library named alsa-lib and ALSA plugins (a simple example...

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Authors (1)

Rodolfo Giometti

Rodolfo Giometti is an engineer, IT specialist, GNU/Linux expert and software libre evangelist. He is the author of the books BeagleBone Essentials, BeagleBone Home Automation Blueprints and GNU/Linux Rapid Embedded Programming by Packt Publishing and maintainer of the LinuxPPS projects. He still actively contributes to the Linux source code with several patches and new device drivers for industrial applications devices. During his 20+ years of experience, he has worked on the x86, ARM, MIPS, and PowerPC-based platforms. Now, he is the co-chief at HCE Engineering S.r.l., where he designs new hardware and software systems for the quick prototyping in industry environment, control automation, and remote monitoring.

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