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Showing content from https://github.com/esp-rs/esp-idf-sys below:

esp-rs/esp-idf-sys: Bindings for ESP-IDF (Espressif's IoT Development Framework)

Build is cargo driven and automatically downloads & configures everything by default; no need to download the ESP IDF SDK manually, or set up a C toolchain
Supports both native ESP IDF build (default), as well as a PlatformIO build
Option to use in a mixed Rust/C project. Check the documentation in the esp-idf-template crate

You might want to also check out the type safe Rust wrappers built on top of these raw bindings:

Note
esp-idf-sys's build script will download the esp-idf, its gcc toolchain, and build it. To show progress and build information about this process run cargo with the -vv (very verbose) flag, so that build script output is also displayed. This is especially useful since the initial build will take a while.

Please note that all esp-idf-* crates are a community effort, in that Espressif puts little to no paid developer time in these. So while ESP-IDF itself is very popular and well tested, the esp-idf-* crates:

Might be a bit lagging behind the latest stable ESP-IDF version
Are (currently) missing HIL tests
Need more documentation

For a HAL which is officially supported by Espressif (as in - with paid developer time), please look at esp-hal. Keep in mind that esp-hal is no_std-only, does not use ESP-IDF and requires async programming.

Follow the Prerequisites section in the esp-idf-template crate.

Customizing how the ESP IDF SDK is built

Read the documentation here.

The examples could be built and flashed conveniently with cargo-espflash. To run e.g. std_basics on an e.g. ESP32-C3: (Swap the Rust target and example name with the target corresponding for your ESP32 MCU and with the example you would like to build)

with cargo-espflash:

$ MCU=esp32c3 cargo espflash flash --target riscv32imc-esp-espidf --example std_basics --monitor

MCU "--target" esp32c2 riscv32imc-esp-espidf esp32c3 riscv32imc-esp-espidf esp32c6 riscv32imac-esp-espidf esp32h2 riscv32imac-esp-espidf esp32p4 riscv32imafc-esp-espidf esp32 xtensa-esp32-espidf esp32s2 xtensa-esp32s2-espidf esp32s3 xtensa-esp32s3-espidf Setting up a "Hello, world!" binary crate with ESP IDF

Use the esp-idf-template project. Everything would be arranged and built for you automatically - no need to manually clone the ESP IDF repository.

For more information, check out:

The Rust on ESP Book
The ESP Embedded Training
The esp-idf-template project
The esp-idf-svc project
The esp-idf-hal project
The embedded-svc project
The embedded-hal project
The Rust for Xtensa toolchain
The Rust-with-STD demo project

ESP IDF can’t be compiled on filesystems without support for symbolic links (e.g. FAT)

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