Function try_init_secondary

pub fn try_init_secondary(
    shared_data: &'static MaybeUninit<SharedData>,
) -> Option<Peripherals>

Try to initialize the embassy-stm32 HAL based on the init done by the other core using init_primary.

This returns the peripheral singletons that can be used for creating drivers if the other core is done with its init. If the other core is not done yet, this will return None.

This should only be called once at startup, otherwise it may panic.

The shared_data is used to coordinate the init with the second core. Read the SharedData docs for more information on its requirements.