Awesome
avr-hal
![attiny-hal docs](https://img.shields.io/badge/docs-attiny--hal-4d76ae)
Hardware Abstraction Layer for AVR microcontrollers and common boards (for example Arduino). Based on the avr-device
crate.
Quickstart
You need a nightly Rust compiler for compiling Rust code for AVR. The correct version will be installed automatically due to the rust-toolchain.toml
file.
Install dependencies:
-
Ubuntu
sudo apt install avr-libc gcc-avr pkg-config avrdude libudev-dev build-essential
-
Macos
xcode-select --install # if you haven't already done so brew tap osx-cross/avr brew install avr-gcc avrdude
-
Windows
Use
winget
on Windows 10 & Windows 11:winget install AVRDudes.AVRDUDE ZakKemble.avr-gcc
On older systems you can use Scoop which you first have to install using Powershell:
Set-ExecutionPolicy RemoteSigned -Scope CurrentUser # Needed to run a remote script the first time irm get.scoop.sh | iex
Install avr-gcc and avrdude
scoop install avr-gcc scoop install avrdude
See Setting up environment for more information.
Next, install "ravedude", a tool which seamlessly integrates flashing your board into the usual cargo workflow:
cargo +stable install ravedude
Go into ./examples/arduino-uno
(or the directory for whatever board you want), and run the following commands:
cd examples/arduino-uno
# Build and run it on a connected board
cargo run --bin uno-blink
Starting your own project
The best way to start your own project is via the avr-hal-template
which you can easily use with cargo-generate
:
cargo install cargo-generate
cargo generate --git https://github.com/Rahix/avr-hal-template.git
Repository Structure
The avr-hal
repository is a workspace containing all components making up the HAL. Here is an overview:
arduino-hal
![arduino-hal docs](https://img.shields.io/badge/docs-git-4d76ae)
arduino-hal
is the batteries-included HAL for all Arduino & similar boards. This is what you probably want to use for your projects. It is intentionally built to abstract away the differences between boards as much as possible.
examples/*
The examples directory contains lots of examples for common hardware. Do note that not all examples were ported to all boards, but there is a good chance that you can still use the code. Currently, the Arduino Uno crate contains the most examples.
mcu/atmega-hal
, mcu/attiny-hal
![attiny-hal docs](https://img.shields.io/badge/docs-git-4d76ae)
HAL crates for AVR microcontroller families. If you have a custom board, you'll want to work with these crates. Please check their documentation for a list of supported MCUs.
avr-hal-generic
![avr-hal-generic docs](https://img.shields.io/badge/docs-git-4d76ae)
This is a generic crate containing most of the HAL implementations in the form of macros which are instanciated in each HAL crate for the specific MCUs. If you intend to write drivers that work with any AVR chip, targeting avr-hal-generic
is probably the best route.
avr-specs/
The avr-specs/
directory contains rustc target definitions for all supported microcontrollers. You will need these for compiling rust code for AVR. The avr-hal-template
already includes them for convenience.
ravedude
![crates.io page](https://img.shields.io/crates/v/ravedude.svg)
ravedude
is a utility for seamlessly integrating avrdude and a serial console into the cargo workflow. With a bit of configuration (check its README!) you can then upload your code to your board and view its output over the serial console by just using cargo run
as you would normally.
Disclaimer
This project is not affiliated with either Microchip (former Atmel) nor any of the Vendors that created the boards supported in this repository.
License
avr-hal 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.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.