Introduction to Rust programming on bare metal hardware

Rust code accompanying a presentation showing how to:

• compile and run firmware on RP2040
• make a USB CDC compatible device on RP2040
• communicate between host to RP2040 using a custom binary protocol
• introduction into RTIC v2

Video of the presentation: Introduction to Rust programming on bare metal hardware

pre-requisites

Ater setting up a working Rust environment including nightly compiler:

# install compilation targets
rustup target add thumbv6m-none-eabi
rustup target add --toolchain nightly thumbv6m-none-eabi
# necessary linker
cargo install flip-link
# Useful to creating UF2 images for the RP2040 USB Bootloader
cargo install elf2uf2-rs --locked
# Useful for flashing over the SWD pins using a supported JTAG probe
cargo install probe-run
# most comfortable way of running and looking at logs
cargo install cargo-embed

for GDB debugging environment follow OS Specific instructions

for setting up the second RP2040 as debug probe (or use the Raspberry Pi Debug Probe) see the Pico Getting Started Guide "Appendix A: Using Picoprobe"

overview of code

• blink-host host client for the serial port over USB protocol
• blink-proto the protocol implementation for host using std and RP2040 no_std
• rp2040-blink the classic hello world of embedded blinking a LED
• rp2040-rtic-usb-serial-blinky the usb-serial communication firmware using RTIC v2 alpha (needs rust nightly)