Crate embassy_time_queue_driver

embassy-time-queue-driver

This crate contains the driver trait used by the embassy-time timer queue.

You should rarely need to use this crate directly. Only use it when implementing your own timer queue.

There is two timer queue implementations, one in embassy-time enabled by the generic-queue feature, and another in embassy-executor enabled by the integrated-timers feature.

Implementing a timer queue

• Define a struct MyTimerQueue
• Implement TimerQueue for it
• Register it as the global timer queue with timer_queue_impl.

Example

use core::task::Waker;

use embassy_time::Instant;
use embassy_time::queue::{TimerQueue};

struct MyTimerQueue{}; // not public!

impl TimerQueue for MyTimerQueue {
    fn schedule_wake(&'static self, at: u64, waker: &Waker) {
        todo!()
    }
}

embassy_time_queue_driver::timer_queue_impl!(static QUEUE: MyTimerQueue = MyTimerQueue{});

Macros

• timer_queue_impl
  Set the TimerQueue implementation.

Traits

• TimerQueue
  Timer queue

Functions

• schedule_wake
  Schedule the given waker to be woken at at.