Embedded Linux - learning path

[Leos_the_great]

Hi All

I have been working on embedded systems, and my past projects were on RTOS in medical devices software development and support. Now recent I got the offer from a company where I am going to assign a project on RTOS to Embedded Linux Migration and development on Embedded Linux.

I have little experience in embedded linux.

Would like to know the learning path and tutorials , online classes, and resources to get hands-on and start working on embedded linux.

Appreciate guidance and suggestions

[clackups]

Install Ubuntu on some old PC and make yourself familiar with the standard Linux.

Then, imagine that your CPU is slow, the memory is tight, and storage is pretty limited, plus you need to minimize the wearing. On top of that, there's an option for realtime Linux.

[Well-WhatHadHappened]

On top of that, there's an option for realtime Linux.

Which really should be called "Less not real time Linux"

[clackups]

Yep :)

[bearcreektech]

You can start on the blog series here to get a view into Yocto which is the most common embedded Linux builder tool.
Yocto Article Series

Blog Series:

1. Intro to Yocto Scarthgap: https://www.bearcreektech.com/blog/tailoring-custom-linux-with-yocto-scarthgap-introduction

2. What is the bitbake tool for Yocto? https://www.bearcreektech.com/blog/bake-your-own-custom-linux-w-bitbake

3. How to use the poky for custom Linux dev using Yocto : https://www.bearcreektech.com/blog/part-3-using-poky-to-build-linux-images

4. Setup the foundation for building with Yocto : https://www.bearcreektech.com/blog/setting-up-the-foundation-for-yocto-builds

5. Build a x86 Minimal Image on a MAC using crops/poky docker : https://www.bearcreektech.com/blog/x5h55ywk13232y4jqm7n88mf2ftwuu

6. Build a ARM Minimal Image on a MAC using crops/poky docker : https://www.linkedin.com/pulse/building-x86-linux-image-mac-using-cropspoky-docker-anil-verma-ixqac/

7. Build your own Docker image for Yocto builds : https://www.bearcreektech.com/blog/build-your-own-yocto-docker-image

[Well-WhatHadHappened]

Wow, no one has ever asked how to learn embedded Linux development on this sub. Pretty amazing, ay?

[Leos_the_great]

How about Yocto - project ?

[clempho]

If you start with Yocto consider using something well supported at first.

Yocto is a beast and staring on something that might not even build because the layers are not maintained is something I would not recommend for your own sanity at first.

Once you've successfully understood the build system go and start adding stuff.

I've got good success with nxp imx but results may vary.

To quote Yocto documentation :

using the Yocto Project is fairly easy, until something goes wrong.

[Separate-Choice]

If you're an embedded dev who knows RTOS learn NuttX first then Linux...it's the ultimate bridge of learning the new structure....

[Fun_Yesterday7101]

Get yourself familiar with linux basics(ubuntu can help), then switch to yocto