IoT & Hardware
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You're reading from  Linux Device Driver Development Cookbook

Product typeBook
Published inMay 2019
Reading LevelIntermediate
PublisherPackt
ISBN-139781838558802
Edition1st Edition
Languages
C
Tools
Linux
Concepts
Embedded Systems
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Author (1)
Rodolfo Giometti
Rodolfo Giometti
author image
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.
Read more about Rodolfo Giometti

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Getting access to I/O memory

In this recipe, we will see how to get access to the internal peripherals of a CPU or to any other memory mapped device that is connected to the CPU.

Getting ready

This time, we'll present an example using an already existing piece of code in the kernel sources, so now there is nothing to compile, but we can go directly to the root directory of ESPRESSObin's kernel sources.

How to do it...

  1. A good and really simple example about how to do a memory remap is reported in the linux/drivers/reset/reset-sunxi.c file in the sunxi_reset_init...
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Linux Device Driver Development Cookbook
Published in: May 2019Publisher: PacktISBN-13: 9781838558802
© 2019 Packt Publishing Limited All Rights Reserved

Author (1)

author image
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.
Read more about Rodolfo Giometti

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