zephyr: Make it clearer that gpio irqs can be hard or soft.#17095
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projectgus wants to merge 1 commit into
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zephyr: Make it clearer that gpio irqs can be hard or soft.#17095projectgus wants to merge 1 commit into
projectgus wants to merge 1 commit into
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This is just a comment change. Signed-off-by: Angus Gratton <[email protected]>
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@danicampora Is that clearer? |
dpgeorge
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Apr 9, 2025
| #if MICROPY_STACK_CHECK | ||
| // This callback executes in an ISR context so the stack-limit check must be changed to | ||
| // use the ISR stack for the duration of this function (so that hard IRQ callbacks work). | ||
| // For irqs with hard=True, the callback executes in an ISR context so the |
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Technically gpio_callback_handler executes in an ISR context which is what I think I intended this comment to mean (and in the parenthesis the comment here mentions that it's so hard IRQ callbacks work).
I think it's worth keeping the statement that this C function executes in an ISR context and we want hard Python callbacks to behave correctly.
See #6146 for reference.
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Ah right I missed that "this callback" refers to the enclosing function and is not referring to the Python callback.
It's probably fine to leave it how it is.
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Summary
Quick follow-up to #16916 - the comment in the IRQ handler makes it sound like all Zephyr IRQs are hard, but actually hard and soft irqs are supported.
Testing
None, this change only updates a code comment.