- [`esp8266-hal`](https://github.com/emosenkis/esp8266-hal) ![crates.io](https://img.shields.io/crates/v/esp8266-hal.svg) (not supported by rustc, so must be built with [mrustc](https://github.com/thepowersgang/mrustc), typically via the [esp-rs](https://github.com/emosenkis/esp-rs) build script)