Unit 1.1 - Introduction

Slides

Exercise 1.1.1: Setup Your Installation

In this file you'll find instructions on how to install the tools we'll use during the course.

All of these tools are available for Linux, macOS and Windows users. We'll need the tools to write and compile our Rust code, and allow for remote mentoring. Important: these instructions are to be followed at home, before the start of the first tutorial. If you have any problems with installation, contact the lecturers! We won't be addressing installation problems during the first tutorial.

Rust and Cargo

First we'll need rustc, the standard Rust compiler. rustc is generally not invoked directly, but through cargo, the Rust package manager. rustup takes care of installing rustc and cargo.

This part is easy: go to https://rustup.rs and follow the instructions. Please make sure you're installing the latest default toolchain. Once done, run

rustc -V && cargo -V

The output should be something like this:

rustc 1.79.0 (129f3b996 2024-06-10)
cargo 1.79.0 (ffa9cf99a 2024-06-03)

Using Rustup, you can install Rust toolchains and components. More info:

Rustfmt and Clippy

To avoid discussions, Rust provides its own formatting tool, Rustfmt. We'll also be using Clippy, a collection of lints to analyze your code, that catches common mistakes for you. You'll find that Rusts Clippy can be a very helpful companion. Both Rustfmt and Clippy are installed by Rustup by default.

To run Rustfmt on your project, execute:

cargo fmt

To run clippy:

cargo clippy

More info:

Visual Studio Code

During the course, we will use Visual Studio Code (vscode) to write code in. Of course, you're free to use your favorite editor, but if you encounter problems, you can't rely on support from us. Also, we'll use VSCode to allow for remote collaboration and mentoring during remote training sessions.

You can find the installation instructions here: https://code.visualstudio.com/.

We will install some plugins as well. The first one is Rust-Analyzer. Installation instructions can be found here https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer. Rust-Analyzer provides a lot of help during development and in indispensable when getting started with Rust.

Another plugin we'll use is CodeLLDB. This plugin enables debugging Rust code from within vscode. You can find instructions here: https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb.

If you're following the training remotely, install the Live Share plugin as well. We will use the plugin to share code and provide help during remote tutorial sessions. Installation instructions can be found here: https://marketplace.visualstudio.com/items?itemName=MS-vsliveshare.vsliveshare

More info:

Git

During the trainings, you'll need the Git version control tool. If you haven't installed Git already, you can find instructions here: https://git-scm.com/book/en/v2/Getting-Started-Installing-Git. If you're new to Git, you'll also appreciate GitHubs intro to Git https://docs.github.com/en/get-started/using-git/about-git and the Git intro with vscode, which you can find here: https://www.youtube.com/watch?v=i_23KUAEtUM.

More info: https://www.youtube.com/playlist?list=PLg7s6cbtAD15G8lNyoaYDuKZSKyJrgwB-

Course code

Now that everything is installed, you can clone the source code repository using Git. The repository can be found here: https://github.com/tweedegolf/rust-training.

Instructions on cloning the repository can be found here: https://docs.github.com/en/get-started/getting-started-with-git/about-remote-repositories#cloning-with-https-urls

Trying it out

Now that you've got the code on your machine, navigate to it using your favorite terminal and run:

cd exercises/1-course-introduction/1-introduction/1-setup-your-installation
cargo run

This command may take a while to run the first time, as Cargo will first fetch the crate index from the registry. It will compile and run the intro package, which you can find in exercises/1-course-introduction/1-introduction/1-setup-your-installation. If everything goes well, you should see some output:

   Compiling intro v0.1.0 ([/path/to/rust-workshop]/exercises/1-course-introduction/1-introduction/1-setup-your-installation)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
     Running `target/debug/intro`
🦀 Hello, world! 🦀
You've successfully compiled and run your first Rust project!
X: 2; Y: 2

If Rust-Analyzer is set up correctly, you can also click the '▶️ Run'-button that is shown in exercises/1-course-introduction/1-introduction/1-setup-your-installation/src/main.rs. With CodeLLDB installed correctly, you can also start a debug session by clicking 'Debug', right next to the '▶️ Run'-button. Play a little with setting breakpoints by clicking on a line number, making a red circle appear and stepping over/into/out of functions using the controls. You can view variable values by hovering over them while execution is paused, or by expanding the 'Local' view under 'Variables' in the left panel during a debug session.

Instructions for embedded

This part is relevant only if you're partaking in one of the workshops on embedded Rust.

Hardware

You should have a [BBC micro:bit](https://microbit.org/buy/bbc-microbit-single/ V2) available.

You'll also need a Micro-USB cable, but we're sure you've got one to spare.

Please check that everything is complete. If not, please contact us.

Software

Then, we'll install some tools needed to flash the mcu and inspect the code.

Install the thumbv7em-none-eabihf toolchain with the following command:

rustup target add thumbv7em-none-eabihf

We'll also install a couple of tools that let us inspect our binaries:

rustup component add llvm-tools
cargo install cargo-binutils

Now, let's install probe-rs. Follow the installation instructions. Probe-rs talks with the debug interface on the micro:bit, to flash your application, log messages, or even set breakpoints and read out device memory.

If you're on linux, you'll need to update your udev rules. On ubuntu or fedora, run the following inside the workshop folder you just cloned;

sudo cp 99-microbit-v2.rules /etc/udev/rules.d
sudo udevadm control --reload-rules
sudo udevadm trigger

If you're on windows, we need to install a generic WinUSB driver. You can use Zadig to select the usb device that uses the jlink driver and install WinUSB on it. This will uninstall the official driver, which means that the official Segger tools will not work anymore after this. To revert, go to device manager and uninstall the usb device. The jlink driver will then be used again for that usb connection.

Then, unplug the USB cable and plug it in again.

Trying it out

Before we begin, we need to test our hardware. We'll be testing the nRF52833 microcontroller and the LSM303AGR motion sensor, that are present on the micro:bit V2. Make sure you have checked out the latest version of the workshop source.

Running the test

To test the hardware, please connect the micro:bit V2 to your pc, switch it on, and run

cd ./exercises/1-course-introduction/1-introduction/2-embedded
cargo run --release

If everything works correctly, you should now see the accelerometer samples being printed on the display. If not, don't worry and contact us.

Docs

Datasheets, manuals, and schematics of the parts we are using in the embedded workshops.

BBC micro:bit V2

nRF52833

LSM303AGR