Embedded Rust

Getting rust to work an the Blue Pill stm32 board

Links

• The embedded rust book
• blue pill wiki page
• rust core basics
• embedded rust project and link collection
• gdb commands
• ARM instruction set
• rust blue pill setup instructions and helpful pages
• (want to read)
• openocd docu
• https://medium.com/@ly.lee/hosting-embedded-rust-apps-on-apache-mynewt-with-stm32-blue-pill-c86b119fe5f
• rust os how to

crates

• blue pill peripherals crate https://crates.io/crates/stm32f103xx
• stm32f1 crate https://github.com/stm32-rs/stm32-rs
• blue pill hal crate https://crates.io/crates/stm32f1xx-hal

Board specs

• data sheet
• reference manual
• flash programming manual
• bootloader notes
• start of flash 0x0800_0000
• start of sram 0x2000_0000

Steps Done

Install bootloader with Stlink (probably incomplete)

  sudo apt install \
  gdb-multiarch \
  openocd \
  qemu-system-arm

Create file /etc/udev/rules.d/70-st-link.rules for permissions with this content:

# STM32F3DISCOVERY rev A/B - ST-LINK/V2\
ATTRS{idVendor}=="0483", ATTRS{idProduct}=="3748", TAG+="uaccess"\
\
# STM32F3DISCOVERY rev C+ - ST-LINK/V2-1\
ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374b", TAG+="uaccess"\

Update:

sudo udevadm control --reload-rules

Debug with ST-Link

• connect both Boot Jumper to 0

setup rust

Install toolchain

rustup target add thumbv7m-none-eabi

Install cargo-binutils

cargo install cargo-binutils
rustup component add llvm-tools-preview

Setup Cargo

cargo init --bin --edition 2018

get the cortex m quick-start files like described in the embedded rust book
https://github.com/rust-embedded/cortex-m-quickstart/blob/master/

Build binary

cargo build --target thumbv7m-none-eabi

Test build

cargo readobj --bin embeddedRust --target thumbv7m-none-eabi -- -file-headers

Size of linker sections

cargo size --bin embeddedRust --target thumbv7m-none-eabi --release -- -A