QUERY · ISSUE
MICROPY_PORT_DEINIT_FUNC called after gc_sweep_all
I'm using MICROPY_PORT_DEINIT_FUNC to release hardware resources upon soft reset.
Unfortunately, it's called only after gc ram is deallocated by gc_sweep_all.
My port uses gc allocated ram, and when MICROPY_PORT_DEINIT_FUNC is called it's too late, gc ram was already deallocated.
https://github.com/micropython/micropython/blob/10709846f38f8f6519dee27694ce583926a00cb9/ports/esp32/main.c#L145-L153
Is there any particular reason gc_sweep_all is called before mp_deinit?
Is it reasonable to move gc_sweep_all after mp_deinit?
CANDIDATE · ISSUE
Move gc_collect to py/gc.c ?
Is there any reason not to move gc_collect from <port>/main.c to gc.c ? we can declare ram_start, ram_end and heap_end as extern in gc.c and define them in each linker script ? or am I missing something ?