Function riot_sys::sched_arch_idle

pub unsafe extern "C" fn sched_arch_idle()

@brief Set CPU to idle mode (CPU dependent)

Only used when there’s no idle thread.

This function will be called by the scheduler when there’s no runnable thread. It will be called from ISR context, and must allow other ISR handlers to be run. E.g., on Cortex-M, the PendSV priority is temporarily lowered (set to higher value) in order to enable other exceptions to be run.

This function should also invoke setting a low power mode, e.g., by calling ‘pm_set_lowest()’.