This repository contains:

• workflows for building Rust fork esp-rs/rust with Xtensa support
• binary artifacts in Releases

The installation process of ready to use custom build of Rust and LLVM:

• macOS Big Sur M1, macOS Big Sur x86_64, Linux x86_64
• Windows 10, 11 x64
• Podman/Docker
• Not supported: Linux arm64 - missing support in ESP-IDF - espressif/esp-idf#6475

Following instructions are specific for ESP32 and ESP32-S series based on Xtensa architecture.

Instructions for ESP-C series based on RISC-V architecture are described in document for ESP32-C3.

Tested OS: macOS Big Sur M1, macOS Big Sur x86_64, Linux x86_64

• rustup - https://rustup.rs/

./install-rust-toolchain.sh

Export variables displayed at the end of the script.

Installation of different version of toolchain:

./install-rust-toolchain.sh --toolchain-version 1.57.0.0 --export-file export-esp-rust.sh
source ./export-esp-rust.sh

curl -LO "https://github.com/espressif/rust-esp32-example/archive/refs/heads/main.zip"
unzip main.zip
cd rust-esp32-example-main

For the ESP32 - default (Xtensa architecture):

idf.py set-target esp32

For the ESP32-S2 (Xtensa architecture):

idf.py set-target esp32s2

For the ESP32-S3 (Xtensa architecture):

idf.py set-target esp32s3

idf.py build flash

Following instructions are specific for ESP32 and ESP32-S series based on Xtensa architecture.

Instructions for ESP-C series based on RISC-V architecture are described in document for ESP32-C3.

Tested OS: Windows 10 x64

• Visual Studio - installed with option Desktop development with C++ - components: MSVCv142 - VS2019 C++ x86/64 build tools, Windows 10 SDK

./Install-RustToolchain.ps1

Export variables displayed at the end of the output from the script.

Installation of different version of toolchain:

./Install-RustToolchain.sh --toolchain-version 1.57.0.0 --export-file Export-EspRust.ps1
source ./Export-EspRust.ps1

Invoke-WebRequest https://github.com/espressif/rust-esp32-example/archive/refs/heads/main.zip -OutFile rust-esp32-example.zip
Expand-Archive rust-esp32-example.zip
cd rust-esp32-example-main

For the ESP32 - default (Xtensa architecture):

idf.py set-target esp32

For the ESP32-S2 (Xtensa architecture):

idf.py set-target esp32s2

For the ESP32-S3 (Xtensa architecture):

idf.py set-target esp32s3

idf.py build flash

Install the RISCV target for Rust:

rustup target add riscv32i-unknown-none-elf

Alternatively you might build the project in the container where image already contains pre-installed Rust and ESP-IDF.

Podman example with mapping multiple /dev/ttyUSB from host computer to the container:

podman run --device /dev/ttyUSB0 --device /dev/ttyUSB1 -it espressif/idf-rust-examples

Docker (does not support flashing from container):

docker run -it espressif/idf-rust-examples

Then follow instructions displayed on the screen.