Contributing

New features

New features should go through the [RFC process][rfcs] before creating a Pull Request to this repository.

rfcs

Bugs

Report bugs by creating an issue in this repository.

Pull Requests (PRs)

Please make pull requests against the master branch.

Always use rebase instead of merge when bringing in changes from master to your feature branch.

Writing documentation

Documentation improvements are always welcome. The source for the book is in book/ and API documentation is generated from the source code.

CI test preparation

Continuous Integration (CI) tests are run against all pull requests.

Please make sure that tests passes locally before submitting.

Cargo format

> cargo fmt

Example check

> cargo check --examples --target thumbv7m-none-eabi

and/or

> cargo check --examples --target thumbv6m-none-eabi

Run tests with xtask

> cargo xtask --target all

Will execute run tests on your local qemu install. (You may also pass a single target --target thumbv6m-none-eabi/thumbv7m-none-eabi during development).

Adding tests to xtask

If you have added further tests, you need to add the expected output in the ci/expected folder.

>  cargo run --example <NAME> --target thumbv7m-none-eabi > ci/expected/<NAME>.run

Internal tests

Run internal fail tests locally with:

> cargo test --tests

Adding tests to internal tests

If you have added fail tests or changed the expected behavior, the expected output needs to be updated (corresponding .stderr files). Inspect the error output, when sure that ACTUAL OUTPUT is correct you can re-run the test as:

> TRYBUILD=overwrite cargo test --tests

This will update the expected output to match the ACTUAL OUTPUT. Please check that the updated files are indeed correct to avoid regressions.

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