Each directory is an entirely independent project showing how to use some feature of rust on esp32s3

Basic "hello world", but entirely in rust by using the esp-idf-sys crate and existing support in std for println and main.

• Use embedded-hal and esp-idf-hal to make the RGB LED on the esp32-s3-devkitC light flash.
• Use the log crate to send info! logs to the espmonitor (instead of plain prints)

• Use embedded-svc and esp-idf-svc to store data to NVS and retrieve data from NVS (at startup)

1. Install the esp rust toolchain

git clone https://github.com/esp-rs/rust-build.git
./rust-build/install-rust-toolchain.sh

2. Install some tools:

cargo install cargo-espflash
cargo install ldproxy

3. Install ccache and sccache for caching (highly recommended), and configure them

# Note: package manager dependent
nix-env -i ccache sccache

Add this to your ~/.cargo/config.toml

[build]
rustc-wrapper = "sccache"

4. Run ../cargo-esp espflash --monitor --release from any of the example directories

• esp-idf-hal includes rust types and functions that allow access to basic/typical peripherals on the esp32s3, like GPIO, SPI, etc. It impliments traits in embedded-hal. Generic code (code that doesn't want to be platform specific) can use embedded-hal traits and accept objects implimenting those traits as inputs.
• esp-idf-svc provides
• esp-idf-sys: raw bindings to functions and types in the esp-idf. This should be a last resort, instead use esp-idf-svc and esp-idf-hal