STM32 Rust Page

Introduction

This is meant to be a general page for rust when using STM32

Install Rust For Embedded

First we install rust. This adds something to ~/.bashrc so rebooting is the quickest way

sudo apt install curl
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

For stm32 we need the toolchain

rustup target add thumbv7em-none-eabihf
cargo install cargo-binutils
cargo install cargo-generate

Install the gcc tools

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

Now we need to install the arm software. For me I went to the arm download page and took the latest version.[here]
I unzipped it and put it in the /opt directory, currently arm-gnu-toolchain-14.2, and add it to my path in .bashrc

Blinky In Rust

The new classic since hello world

#[entry]
fn main() -> ! {
    if let Some(dp) =  pac::Peripherals::take() {

        // Set up the system clock.
        let mut rcc = dp.RCC.constrain();

        // Get the GPIOB peripheral
        let mut gpiob = dp.GPIOB.split(&mut rcc.ahb);

        // (Re-)configure PE13 as output
        let mut led = gpiob.pb13.into_push_pull_output(&mut gpiob.moder, &mut gpiob.otyper);

        led.set_low().unwrap();

        loop {
            led.toggle().unwrap();

            // Wait for 1_000_000 cycles
            cortex_m::asm::delay(1_000_000);

            if led.is_set_low().unwrap() {
                led.set_high().unwrap();
            } else {
                led.set_low().unwrap();
            }

            // Wait for 1_000_000 cycles
            cortex_m::asm::delay(1_000_000);
        }

    }

    loop {
        cortex_m::asm::nop();
    }
}