Crate embassy_futures

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An Embassy project.

Utilities for working with futures, compatible with no_std and not using alloc. Optimized for code size, ideal for embedded systems.


Futures from this crate can run on any executor.

Minimum supported Rust version (MSRV)

Embassy is guaranteed to compile on the latest stable Rust version at the time of release. It might compile with older versions but that may change in any new patch release.


This work is licensed under either of

at your option.


  • Wait for multiple futures to complete.
  • Wait for the first of several futures to complete.


  • Run a future to completion using a busy loop.
  • Poll a future once.
  • Yield from the current task once, allowing other tasks to run.