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Simple example of Rust executing on ESP32

Setup Build Environment

Follow https://github.com/esp-rs/rust-build installation
Install esp-id : https://github.com/espressif/esp-idf
Install Espressif LLVM : https://github.com/espressif/llvm-project

cd llvm-project
mkdir build
cd build
cmake -G Ninja -DLLVM_ENABLE_PROJECTS='clang' -DCMAKE_BUILD_TYPE=Release ../llvm
cmake --build .
export PATH="$HOME/esp32/rust/src/llvm-project/build/bin:$PATH"

Build this project :

cargo build
espflash /dev/ttyUSB0 target/xtensa-esp32-espidf/debug/rust_on_esp32