Rust ESP32 Community Meeting 2022-12-06

[georgik]

Please add topics and links to this discussion.

The meeting is scheduled for 6th December 2022 - 4 pm CET/GMT+1 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 1.66

• official release December 15 2022 UTC - Xtensa build will follow probably the same week

Past events

• Rust Linz 27th Edition - Embedded Rust on ESP32 - https://youtu.be/0PPPdqoDBQs
• UREL FEKT VUT Brno - Embedded Development for ESP32 - slides: https://georgik.rocks/prednasky/

Experiments

• ESP32 Spooky Maze - increased frame rate using 240 MHz CPU and 70 MHz SPI
  • added support for sprites with "transparent" color extending FrameBuf - https://github.com/georgik/esp32-spooky-maze-game/blob/main/esp32-s3-box/src/spritebuf.rs
  • opened issue how to solve "transparent" color for sprite - Support for drawing Sprites with transparent pixels - filtering specific color bernii/embedded-graphics-framebuf#16
  • support for 3 targets in one project - PoC for sharing business logic: esp32-s3, desktop, wasm

[SergioGasquez]

Rust installer

rust-build

• Improve nightly checks CI rust-build#177

espup

• GUI available in https://github.com/esp-rs/espup/tree/feature/gui
• Add CI to sign espup releases espressif/idf-env#50: Sing Windows binaries in idf-env

ESP Templates

esp-idf-template

• Update README esp-idf-template#69

esp-template

• Update dependencies version esp-template#38

Ferrous System training

• Fix docker CI std-training#125
• Add wokwi simulation and web flashing support. std-training#89

Book

• Add windows errors book#51
• Update espflash chapter book#50
• Add troubleshooting section book#49
• Update source commands book#48

Other

• Update install sections esp-hal#273
• Add espup .github#4

Wokwi

• Added ESP32-S3 no_std examples:
  • Template
  • Blinky

[MabezDev]

esp-idf

• esp-idf v5 is officially released - what needs to be done on the Rust side, such that we can default to v5?
• rust-esp32-example updated: Fix build espressif/rust-esp32-example#49

esp-hal

• PeripheralRef init: uart esp-hal#272
  • UART now uses the new PeripheralRef method
  • Need to decide whether to merge into main, or into a "next" branch

core

Interesting RFC: rust-lang/rfcs#2832 - might be interesting for embedded-svc/esp-wifi etc.

[jessebraham]

ESPFLASH

• Use the newer v{major}.{minor} chip revision format
  • Display the newer 'v{major}.{minor}' chip revision format espflash#307
• Fix a typo in ImageFormatKind's FromStr implementation
  • Fix typo in ImageFormatKind's FromStr implementation espflash#308
• Finished up and merged the workspace PR
  • Add support for using custom cargo metadata when in a workspace espflash#300

ESP-PACS

• Apply patches for ESP32 and ESP32-S3 (SHA and MCPWM respectively)
  • Apply patches to esp32 and esp32s3 packages esp-pacs#58
• New releases:
  • [email protected]: https://crates.io/crates/esp32/0.16.0
  • [email protected]: https://crates.io/crates/esp32s3/0.9.0
• Additional patches for the ESP32-S3's MCPWM peripheral
  • Additional corrections for ESP32-S3's MCPWM peripheral esp-pacs#59
• Another new release:
  • [email protected]: https://crates.io/crates/esp32s3/0.10.0
• Even more new releases!
  • [email protected]: https://crates.io/crates/esp32/0.17.0
  • [email protected]: https://crates.io/crates/esp32s2/0.7.0
  • [email protected]: https://crates.io/crates/esp32s3/0.11.0

ESP-HAL

• Helped debug/fix and reviewed PR for SHA accelerator
  • Update PAC for ESP32 and (actually) fix busy check i404788/esp-hal#1
  • Add SHA accelerator implementation esp-hal#257
• Fixed clippy warnings, README updates
  • Fix clippy warnings, update READMEs esp-hal#284

MISCELLANEOUS

• Refactoring, formatting, add CI
  • Refactoring, formatting, and CI esp-println#28
• Add support for the ESP32-C6 and ESP32-H2
  • Add support for the ESP32-C6 and ESP32-H2 esp-backtrace#14
  • Left as a draft until we can verify on hardware in Brno

[bjoernQ]

esp-hal

• I2S

  • Finalize I2S RX Implementation esp-hal#274
    • support fractional dividers
    • handle incompletely filling of RX DMA descriptor buffers
    • some API docs

• refactoring of GPIO module (not the rewrite that Jesse is up to)

  • GPIO module refactoring esp-hal#280

• review + merge
  - remove i2c::SetupError and make i2c::I2C::new infallible esp-hal#281
  - Add Rx and interrupts to UsbSerialJtag esp-hal#267

esp-wifi

• fix Stopped working on ESP32-C3-DevKit-RUST-1 esp-wifi-sys#85

  • Works on ESP32-C3-DevKit-RUST-1 again esp-wifi-sys#86

• investigate why bindgen results in different code for Jesse than it generates for me

  • on OSX and Linux it's needed to specify sysroot - otherwise it's picking up the host's header files

• review Update embedded svc esp-wifi-sys#84

• DHCP example fails to get an IP address on ESP32-C3 esp-wifi-sys#88
  - on C3 it never gets an IP address in development mode
  - Fix ESP32-C3 development mode esp-wifi-sys#90
  - add note about RELEASE mode
  - add a warning to the build.rs when not compiling in release mode

• tcp server socket utils

  • added example with static ip + a tcp serve socket
  • Add static IP and socket listening example esp-wifi-sys#95

• use a queue for TX packets

  • Re-introduce a Queue for TX esp-wifi-sys#96

• implement yield from task

  • Have a way to yield from a task esp-wifi-sys#98

esp-println

• review + merge various PRs

• Fix logger esp-println#30

[georgik]

Next meeting 20th December 2022 - 8pm Brno time

[JurajSadel]

esp-flasher-stub

• add esp32s3 support Add ESP32S3 esp-flasher-stub#7
• esp32s2 in progress

[playfulFence]

esp-hal

• Tested the I2S
  • waiting for codec drivers
  • need add an option to initialise i2s with dout and bclk for 2-pin connector

Other

• finished the esp-gpio-expander example
• Updated esp-clock to new esp-idf-* versions of crates

[tom-borcin]

Xtensa backend

• LLVM team is upstreaming patches to add support of Xtensa backend support to be added to LLVM project
  • https://discourse.llvm.org/t/rfc-tensilica-xtensa-esp32-backend/57835
• First 10 patches were submitted to LLVM 16.0.0
  • Patches 7 and 9 are in review, all other were accepted
• We will work on next batch of 10 patches

[mangelajo]

I just wanted to say hi,

I am planning to look into OTA over the following months ( esp-flash? ), I am looking at it from a broader context, where I am investigating bundling software + firmware updates to Linux Edge devices, not only for ESP32/rust, but for also for a range of other platforms.

I will try to provide ESP/rust examples for https://drogue.io too.

I will be asking questions.