DeflateAwning/stm32l4a6-rust-demo

Quick demo project for using Rust on the STM32L4A6 Microcontroller

STM32L4A6 Rust Demo

Working with the STM32L4A6ZG microcontroller via the Nucleo-L4A6ZG.

Getting Started

1. Install Rust. It must be installed using rustup.
2. Install the required dependencies for embedded rust development.

rustup update
rustup target add thumbv7em-none-eabihf
rustup component add llvm-tools
cargo install cargo-binutils probe-rs-tools cargo-expand

3. Open this repo in VS Code.
4. To flash and run the firmware, run cargo embed from the root of this repo, with the Nucleo-L4A6ZG plugged in.
5. Observe logs coming from the STM32. Observe the green onboard LED blinking.

Guides/Notes

• Main guide: https://www.makerspace-online.com/make-your-microcontroller-apps-safe-and-secure-with-rust-2/
• User Manual: https://www.st.com/resource/en/user_manual/um2179-stm32-nucleo144-boards-mb1312-stmicroelectronics.pdf
• Maybe good: https://www.anyleaf.org/blog/writing-embedded-firmware-using-rust

Alternative Ideas

• Could give this one a try: https://github.com/David-OConnor/stm32-hal

Notable Dev Kit Pins

• LD1 = PC7 (Green LED)
• LD2 = PB7 (Blue LED)
• LD3 = PB14 (Red LED)
• USART2 TX = PA2 or PD5
• USART2 RX = PA3 or PD6

Not Used

• PG7 = LPUART1 TX (via ST-LINK)
• PG8 = LPUART1 RX (via ST-LINK)

Hints for Next Steps

1. Create two separate crates in a repo, and put as much testable logic as possible in the other platform-independent crate.
   • E.g., command parsing, the command list, etc. goes in that crate.
2. Consider adding defmt logging: https://github.com/knurling-rs/defmt