Embedded Working Group Meeting 2021-07-27

Attendance

Write your GH username or Matrix handle here!

Announcements
- cortex-m-rt 0.6.15 released
- call for help with cross: https://github.com/rust-embedded/cross/issues/574
embedded-hal
- Invert layout of traits https://github.com/rust-embedded/embedded-hal/pull/298
- Use the SPI traits to represent a single peripheral on an SPI bus https://github.com/rust-embedded/embedded-hal/issues/299
- Associated Word types https://github.com/rust-embedded/embedded-hal/pull/295
- Other PRs?
- Change return type of SPI transfer https://github.com/rust-embedded/embedded-hal/pull/286
  - No evident objections but checking in case some original design intent has been missed
cortex-m-rt
- 0.7 release TBC
  - Will press on later this week if no new items suggested
cross
- How to integrate new maintainers?
  - Add directly to repo for time being
  - Maybe a cross team later
blog
- Ready to publish, will do release PR after meeting

Announcements
- None this week
embedded-hal
- Invert layout of traits? https://github.com/rust-embedded/embedded-hal/pull/298
  - There was some worry that this would result in lots of copies of a module named blocking in scope due to e.g. use e_h::spi::blocking, but perhaps in practice users would either use e_h::spi and then bound T: spi::blocking::Write, or just use the trait directly.
  - This also allows shared items such as Errors to go into the top-level modules.
- Associated Word types https://github.com/rust-embedded/embedded-hal/pull/295
  - Lots of discussion happening on the PR thread, so no further discussion in meeting this week.
- Remove the various Default traits: https://github.com/rust-embedded/embedded-hal/pull/289
  - Consensus seems to be for removal.
- Any other PRs?
cortex-m
- PR for 0.6.15 and 0.7.0: review from cortex-m team?
showcase
- Needs updating to use GHA, @adamgreig to do after meeting
blog
- Blocked on posting for help with cross maintainership, hopefully real soon now