Let's code a Linux Driver - 1: Hello World Linux Kernel Module

Let's leave userspace and head towards Kernelspace!

In this series of videos I will show you how to write your own Linux Driver. In this video, I will create a simple Hello World Linux Kernel Module Enjoy!

Here is the link to my git-repo:

Here are some of my sources:
Jürgen Platte. Linux Hardware Hackz. Carl Hanser Verlag, 2007.
Martin Züger Usr Graf, Andreas Kalberer. Einführung in die Linux Treiberentwicklung. FHO Hochschule Ostschweiz, 2015.

[linux_with_anakin]

For anyone struggling to get this working on a raspberry pi 4. I struggled to get mine compiling because there wasn't a build folder in /lib/module/$(shell uname -r). The solution, I switched from a headless 32bit OS to a headless 64bit OS.

Thank you Johannes for the awesome playlist and channel!

[creataKulkarni]

Finally started with driver development, thanks Johannes, you make concepts easily understandable!

[chainer]

read a few documentations and still no clue how do i start. found your video and managed to get to a basic start! thank you!

[minarady]

You are awesome, you make it look so easy and simple. Thank you so much!!

Super - exactly what I was looking for! I tried it on Jetson AGX Xavier and x86 PC - both Ubuntu 20.04. Works like a charm.

[samjohnson]

Thank you very much for this. I look forward to going through the entire playlist.

[timothypulliam]

Thank you for this excellent video. The whole world should see it!

[Components-quzs]

Hi Johannes, thanks for sharing these videos. They're very informative and great to follow along.

[Dmv-]

Thank you for your contribution.
Your video helped me a lot in starting my journey in this domain.👍

[king_james_official]

hi man! (or whatever you prefer to be called) i really appreciate the series. it was really hard for me to get into making my own driver, but now i feel a little bit more confident. thanks again :)

[pradeepatchgal]

I really liked your video, very informative and would love to see more from you :)

[bdon]

Fantastic video. I've seen so many different ways to do this, so it would be a nice addition if you added how to build the module when not on the target machine. Use if depmod and other tool, etc.

[ABHISHEKSINGH-nvse]

Very Informative Videos. I am going to see and work along side of your videos.

[zetaconvex]

Many thank. I really appreciate this tutorial.

[techtheguy]

You are a very inspiring person. Thanks

[c.n.crowther]

Thanks, steep learning curve for me but I just want to get my keyboard backlight to work

[pcever]

Thank You For Your Great Effort 💗
Please 🙏 Can You Make Preif Introduction On How To Contribute To The Linux Kernel And And Make Customisation From It ?!

[OthmanAlikhan]

Thanks for the video, awesome tutorial =)

[Nik__._.]

Thank you this was really useful to get a starting grasp! :)

[tzgardner]

9:16 What exactly are you pointing to when you have the following path -C /lib/modules/$(shell uname -r)/build? I'm getting a "no such file or directory"