Struct SystickDriver 

pub struct SystickDriver<const N: usize> { /* private fields */ }

Very basic Embassy time driver that uses the SysTick timer.

Wakeups are stored in a fixed-size array

The driver has to be a static instance, create it with:

embassy_time_driver::time_driver_impl!(static DRIVER: SystickDriver<4>
    = SystickDriver::new(48_000_000, 47999));

Implementations

impl<const N: usize> SystickDriver<N>

pub const fn new(systick_freq: u64, reload_value: u32) -> Self

SystickDriver constructor.

Arguments

• systick_freq - The frequency of the SysTick timer in Hz.
• reload_value - The reload value for the SysTick timer.

Note the tick frequency is configured to embassy_time_driver::TICK_HZ.

pub const fn new_default(systick_freq: u64) -> Self

Create a new SystickDriver with a default reload value that matches the interrupt frequency to embassy_time_driver::TICK_HZ.

The default reload value is calculated as (systick_freq / embassy_time_driver::TICK_HZ) - 1.

Arguments

• systick_freq - The frequency of the SysTick timer in Hz.

pub fn start(&self, syst: &mut SYST)

pub fn systick_interrupt(&self)

Call this from the SysTick interrupt handler.

Trait Implementations

impl<const N: usize> Driver for SystickDriver<N>

fn now(&self) -> u64

Return the current timestamp in ticks.

fn schedule_wake(&self, at: u64, waker: &Waker)

Schedules a waker to be awoken at moment at. If this moment is in the past, the waker might be awoken immediately.