sneusse

QNX/Linux/eCos/Sciopta

What is it that you really need, more than CAN, SOME/IP and a small Web-Server/-Client ?

Sciopta can even be bought ASIL-D/SIL3 certified.

Fills your 4MB flash not even half

You might want to give eCos a try. This should be runnable on a Raspberry. I managed to port Luvit (Luas NodeJS) in a few days. Then you should have a system booting within 500ms.

https://ecos.sourceware.org/ https://github.com/luvit/luvit

Sadly there is not a really big community around both of these.

I would recommend to do that. In Germany (depending where you are located and the school ) I even could keep my job and just extend the study time to about double the regular time. I didn’t learn a lot of new stuff but I was „forced“ to repeat and relearn a lot I wasn’t using in a long time (math, proofs, low level electronics in my case). Doing that didn’t change a lot regarding my income but helped me to reflect on my daily work. It feels a little bit weird to be one of the oldest in the lecture though.

Edit: Education is pretty much free here, the only thing you’ll have to spend is your time.