Is it possible to run lk on STM32F401CCU6 ?

[zinahe]

Hi,

Sorry if this question has been already been addressed before. I would like to tinker with lk and I'm wondering if I can run it on a board with STM32F401CCU6 (256K Flash/64K RAM).

Thanks,

Zinahe A.

[swetland]

Looks like it mostly has been used with 32F407/417 previously (0f the F4xx sub-family) so you'll probably need to tinker with things slightly for 401 (based on a quick peek at https://github.com/littlekernel/lk/blob/master/platform/stm32f4xx/rules.mk), but it certainly should be doable.

[travisg]

Indeed, as swetland points out it should be runnable. It's been a while since I looked at the 400 family, but I think the 401 and 407 are fairly close. It may require an update of the STM software drop that is in the tree but those are usually quite configurable.

[zinahe]

Great! Thanks for the quick reply. I bought these dirt-cheap STM32F401 boards from AliExpress for less than $5 to play with. I'll report my findings here. Just in case anybody is interested, here is the shchematic

[travisg]

Oh that's a nice board. I should grab one too.

[zinahe]

@travisg,
It took a little while but I was finally able to run lk on the tiny STM32F401 board. Most of my time was actually spent on trying to understand the internals of the build system; which I have to say is very well organized. I'd be happy submit a pull-request if there is any interest.
Cheers,

[travisg]

Sure, I'll roll in the commit. Thanks!

[zinahe]

Thanks. Pull request is submitted. Let me know if there is any issue.