esp-hal

Hardware Abstraction Layer crates for the ESP32, ESP32-C3, ESP32-S2, and ESP32-S3 from Espressif.

This project is still in the early stages of development, and as such there should be no expectation of API stability. Only a small number of peripherals currently have drivers implemented (you can see a full list here) and out of those most are still incomplete, albeit functional. These HALs are no_std; if you are looking for std support please use esp-idf-hal instead.

If you have any questions, comments, or concerns please join us on Matrix. For additional information regarding any of the crates in the monorepo, please refer to the crate's README.

Crate	Target	Technical Reference Manual
esp32-hal	xtensa-esp32-none-elf	ESP32
esp32c3-hal	riscv32imc-unknown-none-elf riscv32imac-unknown-none-elf*	ESP32-C3
esp32s2-hal	xtensa-esp32s2-none-elf	ESP32-S2
esp32s3-hal	xtensa-esp32s3-none-elf	ESP32-S3

* via atomic emulation

MSRV

The Minimum Supported Rust Versions are:

• 1.59.0 for RISC-V devices (ESP32-C3)
• 1.59.0 for Xtensa devices (ESP32, ESP32-S2, ESP32-S3)

Note that targeting the Xtensa ISA requires the use of the esp-rs/rust compiler fork, whereas RISC-V is officially supported by the official Rust compiler.

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

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.