Contribute to Trezor Firmware

Please read the general instructions you can find on our wiki.

Your Pull Request should follow these criteria:

The code is properly tested.
Tests must pass on CI.
The code is properly formatted. Use make style_check to check the format and make style to do the required changes.
The generated files are up-to-date. Use make gen in repository root to make it happen.
Commits must have concise commit messages, the imperative mood is preferred (rationale).
Multiple commits per PR are allowed, but please do not use reverts, etc. Use rebase.
Do not use merge (e.g. merge trezor/master into ...). Again, use rebase.
Do not force push to PRs. If you are implementing some comments from a review, use fixup commits (e.g. git commit --fixup HEAD) and push those.
After the PR is finally approved autosquash these commits and force push (git rebase -i master --autosquash).
Do not resolve review comments. Inform the reviewer that you have fixed the issue (simply by commenting "Done" or similar). The reviewer will resolve the discussion after reviewing your fix.