trimble - some self contained esp32s3 examples

examples

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

apple

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

blueberry

• 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)

carrot

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

Building & Running these

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

Crates that you may need to use to work with ESP32s3

• 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