linux device driver tutorial

Linux Watchdog Driver: The Complete Beginner’s Guide (2024)

May 3, 2026

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Learn how the Linux watchdog driver works, how to write one, configure /dev/watchdog, use ioctl commands, and set up the watchdog daemon. Code included. 1. What Is a Watchdog Driver in Linux? Imagine you have a robot that is supposed to check in with you every 30 seconds. If it stops checking in, you assume…

Master Char Driver Model in Linux (2026): Architecture, Flow & Real Examples

Jan 4, 2026

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by

Raj Kumar

in Embedded Linux

Learn the Char Driver Model in Linux with a clear, beginner-friendly explanation. Understand structure, flow, key APIs, and real interview-focused concepts step by step. The Char Driver Model is one of the most important building blocks in Linux device driver development. It defines how hardware devices that transfer data as a stream of bytes are…

Master Linux Driver Architecture (2026)

Jan 4, 2026

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by

Raj Kumar

in Embedded Linux

Linux Driver Architecture explained in a simple, beginner-friendly way. Learn how device drivers work in Linux, understand the Linux driver model, types of Linux drivers, and real-world driver stacks with clear examples. If you have ever wondered how Linux talks to hardware, this article is for you. Not in a dry textbook way. Not in…

Exporting Module Symbols in Linux: 5 Powerful Steps to Master It Easily

Oct 4, 2025

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by

Raj Kumar

in Modules programming basics

Learn Exporting Module Symbols in Linux through a real-time driver example. Master EXPORT_SYMBOL in 5 easy, beginner-friendly steps. Ever wondered how one Linux kernel module can use a function or variable from another module? . Imagine this — you’re working as an embedded Linux engineer, and your team is developing a new audio driver for…

Tag: linux device driver tutorial

Linux Watchdog Driver: The Complete Beginner’s Guide (2024)

Master Char Driver Model in Linux (2026): Architecture, Flow & Real Examples

Master Linux Driver Architecture (2026)

Exporting Module Symbols in Linux: 5 Powerful Steps to Master It Easily