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raspberrypi / pico-sdk

BSD 3-Clause "New" or "Revised" License
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Increasing stack size #1617

Closed niansa closed 5 months ago

niansa commented 5 months ago

Hi! I have a project that operates entirely on stack (max. about 20 KB deep). However, the default stack size seems to be too low to comprehend this. How do I increase the stack size? Is this documented anywhere?

peterharperuk commented 5 months ago

We could probably do with better documentation.

Assuming you're not using an OS like freertos then you'd have to tell us if you care about core 1. If we're talking about a program using core 0 only then I believe the answer is that you can increase stack to 4KB with PICO_STACK_SIZE. But practically you can keep increasing your stack usage until you collide with your heap. If that bothers you then you should take a look at writing your own linker script.

niansa commented 5 months ago

Thanks! Since I don't use the heap (Idk if function like printf do though) it should be fine. Should I close this issue now?

Also, do you have documentation about integrating custom linker scripts, I can see this coming in handy for future projects of mine.

peterharperuk commented 5 months ago

https://github.com/raspberrypi/pico-feedback/issues/372