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Showing content from https://github.com/jhaand/rust4mch below:

jhaand/rust4mch: Example to run Rust code on the MCH2022 badge.

This repo contains instructions and code to run Rust on the MCH2022 badge.

• [Install the toolchains in your host machine]

It also contains instructions and recommendations on how to start a new project.

Install the Rust toolchain for ESP, see full instructions here

1. Install the prerequisites
   • Linux
   • MacOs: No prerequisites are needed
2. Clone the repository or download the installer
   • If downloading the installer, make it executable: chmod a+x install-rust-toolchain.sh
3. Run the following command: require("core")
   • Linux/MacOs:

     ./install-rust-toolchain.sh \
     --extra-crates "cargo-espflash ldproxy" \
     --clear-cache "YES" --export-file ~/export-esp.sh \
     --esp-idf-version "release/v4.4" \
     --minified-esp-idf "YES" \
     --build-target "esp32"

4. Update the environment variables as told at the end of the installation script.
5. Keep a copy of the MCH2022 webusb tools close by in the same directory as this project. Clone it from: https://github.com/badgeteam/mch2022-tools

cargo espflash save-image ESP32 rust4mch.img 

Or run the build.sh script.

../mch2022-tools/webusb_push.py rust4mch rust4mch.img

Or run the upload.sh script

The official process for the badge can be found here. https://www.badge.team/docs/badges/mch2022/software-development/rust/

It provides a simple 'hello world' example over serial and a more advanced example.

Use esp-idf-template as starting point:

cargo generate  https://github.com/esp-rs/esp-idf-template

cargo-generate will as you a few questions, after those, you will have a "Hello, world!" Rust binary crate for the ESP-IDF framework.

Answer the questions as follows:

• STD support: YES
• Release: 4.4
• MCU: ESP32
• Dev containers: NO

Use esp-template as starting point:

cargo generate  https://github.com/esp-rs/esp-template

cargo-generate will as you a few questions, after those, you will have a bare-metal minimalist project!

This project added a minimal hello world example in the examples directory. You can run it as follows:

cargo build --example hello_world
cd target/xtensa-esp32-espidf/debug/examples/
esptool.py --chip esp32 elf2image hello_world

Reset the badge. Connect a serial program to /dev/ttyACM0 at 115k2 baud. After that you can navigate to the apps and run the app.

The best example on useing std Rust on the ESP32 can be found here. It uses a lot of peripheral and protocols.

https://github.com/ivmarkov/rust-esp32-std-demo.git

git clone https://github.com/ivmarkov/rust-esp32-std-demo.git
cd rust-esp32-std-demo/

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