embedded-hal-mock 0.7.2

A collection of mocked devices that implement the embedded-hal traits


CircleCI Minimum Rust Version Crates.io Version

This is a collection of types that implement the embedded-hal traits.

The implementations never access real hardware. Instead, the hardware is mocked or no-op implementations are used.

The goal of the crate is to be able to test drivers in CI without having access to hardware.

This crate requires Rust 1.31+!



  • I²C
  • SPI
  • No-op delay
  • Actual delay
  • Serial
  • RNG
  • I/O pins
  • Timers
  • ...

Pull requests for more mock implementations are welcome! :)


Currently this crate is not no_std. If you think this is important, let me know.


See docs.

Development Version of embedded-hal

If you would like to use the current development version of embedded-hal (or any other version), so long as they are API compatible you can use a patch field in your Cargo.toml file to override the dependency version.

embedded-hal = { git = "https://github.com/rust-embedded/embedded-hal" }


Licensed under either of


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.