Rust ESP32 Community Meeting 2024-01-04

[SergioGasquez]

Please add topics and links to this discussion.

The meeting is scheduled for 4th January 2024 - 5 pm CET/GMT+1 (a.k.a. Brno time) via Google Meet. The meeting invite is automatically sent to attendees of previous meetings. If you'd like to join, please notify us at https://matrix.to/#/#esp-rs-community-meetins:matrix.org

You can find information from the previous meeting at https://github.com/esp-rs/rust/discussions

If you find a topic exciting, click Arrow Icon or Emoji, and your vote will give the preference to the topic.

[georgik]

Rust Releases

• 1.75.0.0 - latest release with LLVM 17 and GCC 13 - https://github.com/esp-rs/rust-build/releases/tag/v1.75.0.0
• 1.76.0.0 - scheduled official release with LLVM 17 and GCC 13 - around 15th Februart 2024

ESP-IDF Releases

• Available releases of ESP-IDF: 5.2-beta1, 5.1.2, 5.0.5, 4.4.6, 4.3.6, 4.2.5
• New release available: 5.2-beta2, 4.3.7

Experiments

• RustZX-ESP32 with USB Keyboard over ESP-NOW using ESP32-S3-USB-OTG and ESP32-S3-BOX
• USB keyboard over ESP-NOW
  • USB keyboard connected to ESP32-S3-USB-OTG with modified peripherals/hid ESP-IDF example
  • ESP32-C3 async receiver
  • notes:
    • Rust Bare Metal implementation of ESP-NOW sends just byte that you want to send
    • ESP-IDF implementation of ESP-NOW sender adds about 20 bytes of header

[SergioGasquez]

esp-rs/.github

• Add trainings .github#6

awesome-esp-rust

• Add no_std training awesome-esp-rust#32

backtrace-defmt-example

• Minor cleanups playfulFence/backtrace-defmt-example#1

book

• Add no_std training book#134

esp-flasher-stub

• Update release workflow esp-flasher-stub#42

esp-println

• Remove defmt-raw docs esp-println#79

esp-template

• Fix CI includes esp-template#137
• Minor updates esp-template#139

espflash

• Add serialport feature espflash#535
• Update stubs espflash#537
• Add defmt documentation espflash#540
• Rebased API improvements espflash#512 so it can be reviewed
• Working on HIL: https://github.com/esp-rs/espflash/tree/feat/hil

espup

• Add support for ESP32-P4 espup#408

no_std-training

• Add a defmt project no_std-training#33

rust-build

• Remove bash script rust-build#250

[bjoernQ]

esp-flash

• PR Add checksum-md5 command espflash#536
  • ground work for Add an option to verify the flash contents after flashing espflash#259 and Improve flash speed by skipping bootloader and partition tables when possible espflash#479
• PR Implement skip and verify espflash#538
  • implements verifying
    • Add an option to verify the flash contents after flashing espflash#259
  • implements skipping unchanged flash regions
    • Improve flash speed by skipping bootloader and partition tables when possible espflash#479

esp-wifi

• Experiment: Don't use wpa-supplicant esp-wifi-sys#394
  • experiment to replace libwpa_supplicant.a
• Avoid overwriting HCI buffer until sent esp-wifi-sys#398
  • fixes a problem when sending HCI commands too fast
• Get IP fast in non-async examples esp-wifi-sys#401
  • non-async examples needed a lot of time to get an IP address

no-std training

• Minor Improvements no_std-training#32
  • minor improvements

[MabezDev]

compiler

• Xtensa Rust 1.75 is out, no known issues yet
  • Using LLVM 17, no notable additions in Xtensa land - just thought I'd mention

esp-wifi

• Ensure that the WiFi interrupts are only enabled once the ISR is set esp-wifi-sys#390 - Took way to long to figure this out, but now flashing esp-wifi applications via probe-rs and espflash (when using the serial part of USB-SERIAL-JTAG) works flawlessly!

esp-hal

• Document current MSRV - Document msrv toolchain per chip hal esp-hal#1058
  • PSA: I'm adding this info because any esp-hal version <0.14 will stop working after nightly-2023-11-30 and/or 1.76 stable, but 0.14+ (and the main branch) will work on any compiler post nightly-2023-11-30.
  • TL;DR: If you haven't upgraded your esp-hal version do so, if you can't ensure you don't use a compiler later than nightly-2023-11-30.

embassy

• New embassy-net release 0.3 embassy-rs/embassy#2401
• Extend the task macro to allow cfging arguments away embassy-rs/embassy#2380

other

• I'm about to start writing the retro blog post for Q4 2023, comment below any special mentions or topics you want included.

[bjoernQ]

Suggestions for the blog post:

• esp-wifi: BLE support on H2
• esp-wifi: First release
• esp-hal: basic ULP-RISCV support for S2/S3
• esp-hal: flip-link for C6/H2
• esp-flash: (unreleased/preview) skipping of unmodified flash regions

[jessebraham]

ESP-BACKTRACE

• Version 0.10.0 esp-backtrace#44
  • https://crates.io/crates/esp-backtrace/0.10.0

ESP-FLASHER-STUB

• Miscellaneous cleanup and refactoring esp-flasher-stub#41

ESP-IEEE802154

• Assorted updates and housekeeping esp-ieee802154#18

ESP-HAL

• Move initialization functions into esp-hal-common package's soc module esp-hal#1049
• Add rt-riscv and rt-xtensa features to esp-hal-common esp-hal#1057

SVD

• Merged some open PRs updating the register description files
• Upstreamed patches from esp-pacs