Rust ESP32 Community Meeting 2022-07-26

[georgik]

Please add topics and links to this discussion.

The meeting is scheduled for 26th July 2022 - 8 pm CEST/GMT+2 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 Toolchain 1.62.1.0

• https://github.com/esp-rs/rust-build/releases/tag/v1.62.1.0
• added support for Windows GNU toolchain as an alternative to MSVC - Request build for windows-gnu rust-build#33

Rust Toolchain 1.63.0.0

• official release of Rust toolchain: 5th August 2022
• our toolchain build finalization is scheduled for the 16th of August
• list of issues which should be solved for the release: https://github.com/esp-rs/rust-build/milestone/7

ESP-IDF v5.0

• release by the end of July
• CI tracking issue: Support for ESP-IDF v5.0 CI rust-build#70
• build is failing: Build with ESP-IDF 5.0 / master (2022-05-26) fails esp-idf-sys#99

New project

• ESP-Clock with Rust Boards and MQTT: https://github.com/playfulFence/esp-clock#esp32-%D1%813-rust-board-with-ili9341-display

Experiments

• Rust Bare Metal with ESP32-S2-OTG - SPI display - WIP Feature/spi display esp-hal#117
• Spooky maze - https://github.com/georgik/esp32-spooky-maze-game
  • very slow rendering over SPI
    

[georgik]

Thanks @jessebraham for the hint. Increasing SPI frequency to 100000kHz improved the render time of the whole screen to 0.25s

[bjoernQ]

esp-hal

• improve documentation for the in-tree examples: have a description of what the example is about and what is needed
• support for setting CPU clock speed on ESP32, ESP32-C3, ESP32-S2, ESP32-S3
• support for direct-boot on ESP32-S3
• Timer refactoring / improvements
  • split timer-group in timer0, ( timer1 ), wdt
  • support for setting wdt-timeout and feeding the watchdog
  • add example showing how to use the watchdog
• update RISCV-RT dependency to 0.9.0
• improve UART support
  • option to configure baud-rate, stop-bits, parity, pins
  • At-Cmd-detection interrupts and configuration
  • added some other useful interrupts and configuration
  • add examples

espflash

• fix flashing of direct-boot images on ESP32-S3

esp-println

• quick fix needed for nightly-2022-07-14, published 0.2.1

esp-wifi

• finally uses linked-list-allocator instead of home-grown "works somehow" allocator
• update to embedded-svc 0.22.0 finally in
• Jesse still struggles with getting an IP address on new network setup
  • seems like it's just smoltcp not getting the IP via DHCP - the logs tell us it is receiving UDP broadcasts at least
• update to latest ESP-HAL

[jessebraham]

ESP-ALLOC

• Add a simple allocation error handler gated behind a feature
  • Users need to define this for each binary otherwise, which can become tedious
  • Add a simple allocation error handler gated behind a feature esp-alloc#3
• Update the linked_list_allocator dependency to the newest version
  • Update the linked_list_allocator dependency to the newest version esp-alloc#4
• Published 0.1.0
  • https://crates.io/crates/esp-alloc

SVD + ESP-PACS

• Created the first SVD for the ESP32-C2
• Added a PAC for the ESP32-C2 to esp-pacs
  • Add a PAC for the ESP32-C2 esp-pacs#33
• Reworked the LEDC peripheral to have consistent naming
  • Align LEDC register and field names across chips esp-pacs#36

ESP-WIFI

• Finally got my PR using esp-alloc merged
  • Swap out the current allocator for esp-alloc esp-wifi-sys#40

OTHER

• Published an updated version of esp8266-hal which fixes build errors with newer compilers
• Added a CI workflow to automatically create releases for SVDs
  • Add a CI workflow to create a release whenever main is pushed to espressif/svd#23

[SergioGasquez]

Rust installer improvements for 1.62.1.0

• Install GCC for selected targets when not installing esp-idf rust-build#108: For no-std we no longer need to install esp-idf
• Add argument to select LLVM mode (minified or full) rust-build#120
• Build template projects before publishing tags to Dockerhub rust-build#121
• Installer CI:
  • Add some CI to build template projects when changing the installer rust-build#110
  • Comment esp-idf-master job rust-build#116:: Until Build with ESP-IDF 5.0 / master (2022-05-26) fails esp-idf-sys#99 is fixed
  • Add crate-checker job rust-build#119
  • Add more test cases rust-build#126
• Minor fixes/improvements
• Fix bash scripts format rust-build#109
• Update dependencies rust-build#104
• Update crates order rust-build#106
• Update espflash and cargo-espflash binaries rust-build#103
• Add ldproxy binary for aarch64-unknown-linux-gnu rust-build#100
• Exports were not properly working for esp32c3 rust-build#111
• Fix LIBCLANG_PATH export rust-build#115
• Append PATH to the export file instead of overwritting rust-build#117
• Fix: Use cargo-espflash binary rust-build#105

ESP Templates

esp-idf-template

• Remove toolchain question esp-idf-template#40: toolchain is assumed based on the selected target (nightly for esp32c3, esp otherwise)
• Add CI to build all the targets esp-idf-template#35: CI to build the project for all the targets using the Dockerfile generated for devcontainer support.
  • Improve CI to allow checking PRs esp-idf-template#43
• Toolchain and Rust edition Update esp-idf-template#42: Use Rust 2021 edition and toolchain 1.62.0.0

esp-template

• Update CI to use binaries for cargo-generate and ldproxy esp-template#13
• Dockerfile clean-up and toolchain upgrade esp-template#12 and Update gitpod.Dockerfile esp-template#14: Avoid installing esp-idf and small clean-ups
• Split TIMG esp-template#15: Update changes on timers due to Separate TIMG into timer0, (timer1), wdt esp-hal#104 and update CI with Avoid using hardcoded repo for PRs esp-template#16

Ferrous System Training

• Fix ESP-IDF environment, update crates versions and use tag v4.4.1 std-training#80: Combines Use tag instead of release branch std-training#79 and Fix ESP-IDF environment activation std-training#69
• Crates cleanup std-training#83
• Feature/gitpod std-training#64: Is now reviewed, merge is still pending.

Wokwi

• Update Rust board to v1.2 wokwi/wokwi-boards#2: Wokwi Rust board is now v1.2
• Update Rust builders wokwi/wokwi-builders#7

Other

• Add resources rust-edu/rust-edu.github.io#2: https://rust-edu.org/ now contains some esp-rs resources
• Improve devcontainer support and Wokwi integration playfulFence/esp-clock#1

TWIR:

• I will try to include esp-rs updates on This Week in Rust, let me know if you have any suggestions, so far we have included @jessebraham latest blog post and @MabezDev latest quarterly update:
  • Add Bare-metal Rust on ESP32: A brief overview rust-lang/this-week-in-rust#3459
  • Add Rust on Espressif chips quarterly update rust-lang/this-week-in-rust#3473

Discussions

• Drop support for 4.3.2 esp-idf-template#45: Should we support esp-idf 4.3.2 in our template?
• Centralize storage of release number from CI scripts rust-build#125: Does anyone have any suggestions for this issue?

[georgik]

Suggestion for the next meeting:
The next meeting is 9th August at 3 pm Brno time (CEST+2)
We're alternating the time from 8 pm to 3 pm for this iteration.

[MabezDev]

esp-hal

• Interrupt vectoring:
  • Xtensa interrupt vectoring: Xtensa vectored interrupts esp-hal#103
  • Follow up RISC-V (esp32c3) RISCV vectored interrupts esp-hal#118
  • Vectoring to the proper PAC handlers I can now continue with embassy development
• Abandoned Xtensa CS implementation esp-hal#90 we need new releases of critical_section and bare_metal for this

xtensa-lx-rt

• allow interrupt level preemption xtensa-lx-rt#47

esp-idf-svc

• drop _config postfix as the behaviour has changed in esp-idf-sys esp-idf-svc#104 - esp-idf-sys' config cfg format changed

riscv

• https://github.com/esp-rs/riscv-atomic-emulation-trap new release to keep in step with upstream riscv-rt

[JurajSadel]

esp-hal

• created Add basic LEDC support for esp32, esp32c3, esp32s2 and esp32s3 esp-hal#114 - ESP32 and ESP32C3 have to be updated
• added ESP32C3, ESP32S2 and ESP32S3 support + examples for each chip (not in the linked PR yet)
• the last step is to find the best option how to merge it

Wokwi-CI

• started doing initial research
• currently ESP32, ESP32C3 and ESP32S2 supported
• success with both STD and bare-metal example simulation
• we should decide what HW we would like to test so we can add it to the CI

[N3xed]

embuild

• refactor cmd*! macros to make them more generally useful
• upgrade bindgen to 0.60
• improve documentation (at 50% now)
• add automatic tagging on publish action
• add nightly feature so that required feature per module/function/... are displayed on docs.rs
• fix platformio build being broken
  • esp-rs/embuild@50e4218
  • esp-rs/embuild@b1c996d (fix for windows)
• release 0.30.0 and 0.30.1

esp-idf-sys

• Upgrade embuild, bindgen, add automatic tagging esp-idf-sys#111
• started working on External components discussion esp-idf-sys#72
• add automatic tagging on publish action ( Use tags to mark crate release versions esp-idf-sys#53)