Embedded Prep

Tag: Linux Kernel Programming

  • Linux Character Driver from Scratch (Beginner to Pro)

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    Raj Kumar
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    Learn how to build a Linux Character Driver from scratch with this beginner-friendly guide. Step-by-step tutorial covering kernel modules, file operations, device files, and real-world driver examples. If you’ve ever wanted to understand how Linux actually talks to hardware, learning a Linux Character Driver is one of the best places to start. This guide is…

  • Master How to Write Platform Devices and Drivers (2026)

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    Raj Kumar
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    Learn how to write Platform Devices and Drivers from scratch using Device Tree, I2C, interrupts, and testing, explained clearly for beginners. If you are stepping into Linux device driver development, sooner or later you will hear one phrase again and again: Platform Devices and Drivers.They sound complex at first, but once you understand the flow,…

  • Master PCI Drivers in Linux (2026)

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    Raj Kumar
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    Learn PCI Drivers in Linux , including PCIe architecture, BARs, device probing, interrupts, and kernel driver development. If you’re curious about how Linux talks to hardware on the PCI bus, you’re in the right place. Today we’re going to unpack PCI drivers in Linux, explain how they work, and give you hands‑on insights into writing,…

  • Master USB Drivers in Linux (2026)

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    Raj Kumar
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    USB Drivers in Linux explained for beginners earn USB architecture, driver registration, device detection, and real-world examples. If you’ve ever plugged a USB device into your Linux system and wondered how it magically works, you’ve experienced the power of USB drivers in Linux. From keyboards and mice to storage devices and cameras, Linux relies on…

  • Master Drivers in Linux | Ultimate Guide to I2C, SPI, and GPIO (2026)

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    Raj Kumar
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    Learn Drivers in Linux with a beginner-friendly guide covering device driver types, kernel interaction, hardware access, and real-world examples. If you’ve ever wondered how Linux communicates with the hardware inside your computer or embedded system, the answer lies in drivers in Linux. Drivers are the bridge between the operating system and the hardware, allowing your…

  • Master Interrupt Handling in Linux (2026)

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    Raj Kumar
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    Master Interrupt Handling in Linux (2026) with a clear, beginner-friendly guide covering IRQ flow, ISR, softirqs, tasklets, and real-world examples. If you’re new to embedded systems, Linux device drivers, or real‑time programming, the term Interrupt handling probably sounds important and it is. But what is it really? And why do engineers talk about Linux interrupt…

  • Master Hardware Access in Linux (2026)

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    Raj Kumar
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    Learn hardware access from basics to advanced, including MMIO, port mapped I/O, device addresses, and user space access in Linux. Hardware access is the foundation of how software communicates with real physical devices inside a computer or embedded system. Whether it is reading data from a sensor, sending audio to a speaker, or controlling a…

  • Master Block Driver Model in Linux (2026)

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    Raj Kumar
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    Learn the Block Driver Model in Linux with a clear, beginner-friendly explanation covering architecture, request flow, kernel components, and real-world use cases. If you’re diving into Linux kernel development or embedded systems, one of the crucial areas you’ll encounter is block device drivers. Whether it’s a hard disk, SSD, or flash memory, understanding the Block…

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

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    Raj Kumar
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    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)

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    Raj Kumar
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    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…