Embedded Working Group Meeting 2023-07-18

Attendance

Write your GH username or Matrix handle here!

Announcements
- @nchong-at-aws joins the cortex-a team to help maintain aarch64-cpu crate
Bors
- Ongoing… Cortex-M swapped to GHMQ. Ops docs need updating.
Cortex-M
- Hardfault trampoline https://github.com/rust-embedded/cortex-m/pull/476
  - no update this week
svd2rust
- per-peripheral steal()
  - Need to document safety requirements
critical-section
- need to publish updated docs, maybe with extra example
  - perhaps with a list of implementations in the readme
embedded-hal
- embedded-io merged into embedded-hal repo
- async SPI ExclusiveDevice moved to embedded-hal-bus
- serial traits…

Announcements
- Rust 1.71 on Thursday
Cortex-A team/repo
- PRs incoming: note that aarch64 is maintained by cortex-a team, add to wg readme list
Bors
- Ongoing
Cortex-M
- Hardfault trampoline https://github.com/rust-embedded/cortex-m/pull/476
  - no update this week
svd2rust
- per-peripheral steal() https://github.com/rust-embedded/svd2rust/pull/723
  - ready to merge?
  - need documentation about safety requirements
embedded-hal
- embedded-io adding to embedded-hal repo
  - https://github.com/rust-embedded/embedded-hal/pull/466
  - ready to merge
  - followup PR to expand docs around required semantics
  - discuss next week if we need e-h to re-export e-io traits
- e-h-b: (temporarily) access bus through ExclusiveDevice?
  - https://github.com/rust-embedded/embedded-hal/issues/467
  - need to ensure any changes aren't immediately overwritten from another thread
  - perhaps a closure that gives temporary access to the inner bus?
  - noted that this probably won't be necesssary from Linux where spidev handles changing clock speed per-device already
- road to 1.0
  - transition guide
  - validating traits in hals and drivers
  - serial traits
    - https://github.com/rust-embedded/embedded-hal/pull/349#issuecomment-1499465364