jhodapp / rp2040-uart

An example application that uses the UART to echo output text back to the host machine, written in Rust for the RP2040 microcontroller

A Rust-based UART echo server for the Raspberry Pi Pico

Getting started

For more details see the following article on getting started for getting your environment set up on Mac/Linux: https://reltech.substack.com/p/getting-started-with-rust-on-a-raspberry

On a Mac, to run minicom: minicom -D /dev/tty.usbmodem14201 -b 115200. Note that you'll most likely need to find the current /dev link assigned to the Pico UART for your particular machine.

Requirements

• The standard Rust tooling (cargo, rustup) which you can install from https://rustup.rs/

• Toolchain support for the cortex-m0+ processors in the rp2040 (thumbv6m-none-eabi)

• flip-link - this allows you to detect stack-overflows on the first core, which is the only supported target for now.

Installation of development dependencies

rustup target install thumbv6m-none-eabi
cargo install flip-link
cargo install cargo-edit
cargo add panic_halt

Running

For a debug build

cargo run

For a release build

cargo run --release

License

This project is licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)

• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.