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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

What is the universal serial bus?

The Universal Serial Bus (USB) is a computer bus used by a CPU and its peripherals to communicate to each other. In every USB communication, at least one USB host and one USB device exists. The former is the one that effectively directs the traffic flow to devices, while the latter is the one that simply answers all the host's requests.

Practically, the USB host periodically queries all connected USB devices in order to discover if they want to send a message to it. So, the host is smart enough to understand which kind of peripheral the user has connected in, and it can reconfigure the system in order to correctly manage it. This magic happens each time a USB device is first connected to a USB host, thanks to the enumeration process.

The enumeration starts by sending a reset signal to the USB device (at this stage, the data rate of the USB device is automatically determined), and after the reset, all the information of the USB device is read by the host and...

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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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