Teensycore

Teensycore is a kernel written in rust for the Teensy-4.0 microcontroller.

Installation

To properly build teensycore and any subsequent project, you'll need the following:

```bash

Install build tools

sudo apt-get install gcc-arm-none-eabi jq

Configure rust

rustup default nightly rustup target add thumbv7em-none-eabi ```

Usage

Teensycore exports a convenient macro that helps to configure the entrypoint of your application. It takes care of the default panic handler, initializing system clocks, setting up irq, enabling debug UART, and much more. In this way, you can just focus on what your project needs to get going.

```rust

![feature(lang_items)]

![crate_type = "staticlib"]

![no_std]

teensycore::main!({ /* Application code here */ }); ```

Building

In order for your project to build correctly, you'll need the following: - Configure your project as a library - Put your entrypoint code in src/lib.rs - Download the build template bash script - Execute build-template.sh in lieu of cargo build.

The build script will generate a .hex file and place it in a folder called out. This hex file is compatible with the teensy 4.0 and can be flashed with the teensy-loader utility.

CAUTION: Do not build this in release mode. It optimizes a lot of stuff away, and can cause problems.

Contributing

This project is a work-in-progress and will be undergoing significant development over the coming months as I make it suitable for my own needs. Contributions are welcome.

License

MIT