Rust ESP32 Community Meeting 2023-11-09

[SergioGasquez]

Please add topics and links to this discussion.

The meeting is scheduled for 11th November 2023 - 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

• 1.73.0.1 - latest release with LLVM 16 and GCC 13 - https://github.com/esp-rs/rust-build/releases/tag/v1.73.0.1
• 1.74.0.0 - scheduled official release with LLVM 16 and GCC 13 - around 20th November 2023

ESP-IDF Releases

• Available releases of ESP-IDF: 5.1.1, 5.0.4, 4.4.6, 4.3.5, 4.2.5

Upcoming events

• 16th November - code::dive - Wrocław - AeroRust talk featuring Rust Board

Wokwi

• ESP32-S2, ESP32-S3: SPI3 support fixed
• Rotation of screenshot in Wokwi CI - no need for additional dependencies like ImageMagic
• pytest-embedded support for Wokwi runner - alternative to Qemu - useful for ESP-IDF based/std projects

Experiments

• esp32-conways-game-of-life-rs - Rust Bare Metal Conway's Game of Life for ESP32-S3-BOX
• esp32-spooky-maze-game - release v0.7.0 - update to the latest esp32-hal, fixes of m5stack
  • PR with initial version of DMA support for Rust Embedded Graphics - way smoother and faster drawing
• esp32-rust-lilygo-t5-epaper - update to the latest esp32-hal which fixed instability caused by calling incorrect Reset - Make sure to use ESP32Reset - not Reset as entry esp-hal#823
• esp32-buddy-rs - update to the latest esp32-hal

[apollolabsdev]

Book Release

• Wired World: A Beginners Guide to Embedded Electronic Interfaces

[jessebraham]

EMBEDDED RUST WORKING GROUP

• Volunteered for the RISC-V and Triage teams
  • Add @jessebraham to RISC-V and Triage teams rust-embedded/wg#715
  • Add @jessebraham to Rust Embedded RISC-V and Triage teams rust-lang/team#1111

SVD

• Published new SVDs for most devices
  • https://github.com/espressif/svd/releases/tag/2023-10-26

ESP-PACS

• Add new SVDs and remove old patches esp-pacs#165
• New package releases esp-pacs#166
  • https://crates.io/crates/esp32/0.27.0
  • https://crates.io/crates/esp32c2/0.15.0
  • https://crates.io/crates/esp32c3/0.18.0
  • https://crates.io/crates/esp32c6/0.8.0
  • https://crates.io/crates/esp32h2/0.4.0
  • https://crates.io/crates/esp32s2/0.18.0
  • https://crates.io/crates/esp32s3/0.22.0

ESP-HAL

• Update dependencies, miscellaneous fixes/improvements esp-hal#878
• Documentation improvements for esp-hal-procmacros esp-hal#879
• Miscellaneous pre-release fixes esp-hal#883
• New package releases esp-hal#887
  • https://crates.io/crates/esp-hal-procmacros/0.7.0
  • https://crates.io/crates/esp-hal-common/0.13.0
  • https://crates.io/crates/esp-hal-smartled/0.6.0
  • https://crates.io/crates/esp32-hal/0.16.0
  • https://crates.io/crates/esp32c2-hal/0.11.0
  • https://crates.io/crates/esp32c3-hal/0.13.0
  • https://crates.io/crates/esp32c6-hal/0.6.0
  • https://crates.io/crates/esp32h2-hal/0.4.0
  • https://crates.io/crates/esp32s2-hal/0.13.0
  • https://crates.io/crates/esp32s3-hal/0.13.0
• Begin next release cycle esp-hal#888
• New patch release for esp-hal-common esp-hal#895
  • https://crates.io/crates/esp-hal-common/0.13.1
• Begin next release cycle esp-hal#896

OTHER

• Make the action work with act xtensa-toolchain#26
• Update to latest versions of HALs and esp-wifi, simplify Rhai script esp-template#123
• Add support for the ESP32-P4 esp-println#61
• Modified teleprobe to work with RISC-V ESP devices

[JurajSadel]

esp-wifi

• made good progress (in my opinion) with H2 BLE
• I'm facing an issue with advertising

esp-hal

• reviewed a few PRs
• I agree with Jesse Braham that Peripheral drivers utilizing multiple GPIO need to be updated for consistency, I also think we should start investing some time into polishing API for all peripherals

devcon-mqtt-demos

• I updated all three demos for the latest HAL, however, the rust-mqtt is not very well maintained and it's not up-to-date with some important crates, for example embedded-io had breaking change with 0.6.0 IIRC

[bjoernQ]

esp-wifi

• fix for starting the scheduler
  • Make sure the scheduling won't start before everything is setup esp-wifi-sys#324
• some docs in preparation of the release
  • Revise API docs esp-wifi-sys#330
• Some automated tests
  • Add basic automated tests esp-wifi-sys#339

esp-hal

• Make sure BLE and WiFi are not powered down when esp-wifi needs them
  • Make sure BLE and WiFi are not powered down when esp-wifi needs them esp-hal#891
• fix ESP32 C6 + H2 UART driver
  • ESP32-C6/H2: UART sync registers and use xtal esp-hal#893
• another attempt to simplify the CI (experiment/suggestion)
  • Simplify CI - no need to list every embassy_* example explicitly esp-hal#900
  • probably the whole CI needs some fresh ideas: maintaining the ci.yml is not fun
• LP core configurable clock
  • Configurable LP Core clock esp-hal#907
• support inverted gpio pins
  • Support inverted pins esp-hal#912
• clear LP RAM and rename ULP-HAL
  • Clear LP/RTC RAM esp-hal#916

esp-ieee802154

• update dependencies and examples
  • Update dependencies esp-ieee802154#15

esp-openthread

• update dependencies and examples
  • Update dependencies openthread#1
• add a safe Rust wrapper for UDP sockets
  • Safe wrapper for UDP send/receive openthread#2

esp-mbedtls

• Update dependencies esp-mbedtls#21

esp-println

• published new version https://crates.io/crates/esp-println/0.7.1

Other

• Decoder for RISCV Trace Encoder
  • https://github.com/bjoernQ/esp-trace-decoder

Questions

• Anything left to do before releasing esp-wifi 0.1.0?

  • Wait for another HAL release?

• Any reason not to move esp-openthread to esp-rs?

[MabezDev]

esp-wifi

• Unify examples and update hal esp-wifi-sys#296, a single set of examples for all chips
• Add a benchmarking example for blocking and async esp-wifi-sys#328, a benchmarking server and examples for blocking and async

esp-hal

• Remove direct boot support from esp-hal esp-hal#903

compiler

• Set max_atomic_width for riscv32*-esp-espidf to 32 rust-lang/rust#117307 FYI the max atomic width has been reduced to 32bits (was 64).
• Spent a while debugging Xtensa LLD, hopefully the LLVM team can figure out what's going on.

probe-rs

• Add esp32h2 support probe-rs/probe-rs#1862
• I've started looking into Xtensa support again
  • Will tackle jtag scan support in probe-rs first, or at least for the USB serial jtag driver.

[SergioGasquez]

book

• Update debug section book#128

esp-flash-loader

• Add ESP32-C2 support esp-flash-loader#4

esp-hal

• Update readme esp-hal#877

esp-println

• Update readme esp-println#60

esp-template

• Update deps esp-template#122

espflash

• Begin 3.0.0 release cycle espflash#494
• Update log-format flag and merge monitor methods espflash#499
• Reviewed and merged several community PRs

espup

• Remove unused emoji.rs espup#383
• Minor improvements espup#384
• Update changelog espup#385
• Prepare v0.8.0 release espup#386
• Update Windows env espup#389
• Begin next release cycle espup#390
• v0.8.0 was released, and will probably cut a new release since we now don't install RISC-V GCC by default.

probe-rs

• Add ESP32-C2 support probe-rs/probe-rs#1869

std-training

• Update base image std-training#212
• Add VS Code Wokwi files and Wokwi.com projects std-training#214
• Update deps and add rustfmt std-training#215

webpage

• Add Espressif dev kit FTDI rule probe-rs/webpage#93

wokwi-boards

• Add custom chips wokwi/wokwi-boards#23

wokwi-builders

• Update rust-training image wokwi/wokwi-builders#56

[playfulFence]

Wokwi

• Updated and fixed examples under my maintenance (https://wokwi.com/projects/344869867332043347 and https://wokwi.com/projects/342697409287029332 caused a lot of problems, in the end it was an incompatibility with previously used allocator, so be careful).

esp-hal

• About to finish LP_I2C on esp32c6 (!)

[sambenko]

Not much of a breakthrough, but regarding my bachelor's thesis project esp32s3box-display-and-publish, I managed to pass more complex data type to embassy tasks, specifically display so far.

• created a struct that wraps the display, implemented the required traits and passed the struct into the embassy task argument
  embassy_task_ili9342c.rs

• for now it's static values and specific display, could be generic in the future

• possible to update the display in a separate embassy task

• Thanks to @MabezDev for the discussion we had about this and @bjoernQ for helping me with updating stuff

• also updated my esp32s3-box graphic examples for new esp-hal v0.13.0, same with other projects

[ivmarkov]

A few topics for discussion from my side:

• Removing AtomicU64 support from xtensa targets: Avoid emulating wider atomics #196
• Plan forward for supporting atomics on bare-metal targets; specifically how we think about the atomic trap project:
  • Do we still need it?
  • Can't we just move to portable-atomic? we can always re-introduce atomic trap once portable-atomic becomes compatible with the cfgs of atomic trap
• HIL tests and overall testing strategy
• A bit offtopic for esp-rs, but seems to constantly popup in the esp-rs Matrix chat as well: async support for embedded-graphics; what does this even mean given that embedded-graphics itself is not async? Does "async support" for e-g entails the utilization of an interim frame buffer?

[Vollbrecht]

espup

• 🚩 add flag to only install riscv if user wants espup#391

esp-rs/rust-lang

• revisit how espressif/idf-rust containers are build rust-build#247 , optimizing containers for ci and devcontainer consumption

esp-idf-sys/hal/svc

new bugfix releases regarding various small things since our big release from 3 weak's ago ( ty ivmarkov)

esp-idf-hal

• Gp timer api esp-idf-hal#332 testing the newly introduced timer api in esp-idf 5 ( general question should we also introduce a deprecated feature flag in the long run for all drivers in the deprecated dir on esp-idf)