Rust ESP32 Community Meeting 2023-06-08

[jessebraham]

Please add topics and links to this discussion.

The meeting is scheduled for 8th June 2023 - 5 pm CET/GMT+2 (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

• 1.70.0.1 - current release with LLVM 16 and GCC 12 - https://github.com/esp-rs/rust-build/releases/tag/v1.70.0.1
• 1.71.0.0 - scheduled official release with LLVM 16 and GCC 12 updates - around 15th July 2023

Wokwi CI and LCD

• Rust Bare Metal with LCD screenshot - https://github.com/georgik/esp32-spooky-maze-game/blob/main/.github/workflows/run-esp32-wokwi-test.yaml
• steps to setup:
  • grab the CI token from https://wokwi.com/dashboard/profile
  • set the value to Repository secrets - WOKWI_CLI_TOKEN
  • enable Github Pages - Source GitHub Action
  • add yaml with CI on main branch

Wokwi CI with Yaml and ESP32-C6 Low Power Core simulation

• ESP32-C6 Low Power Core simulation with I2C sensor - https://github.com/wokwi/esp32c6-i2c-lp
• Yaml for description of test scenario: https://github.com/wokwi/esp32c6-i2c-lp/blob/main/lp.test.yaml
• GitHub Action Example:

Articles

• ESP32 Embedded Rust at the HAL: GPIO Interrupts - https://apollolabsblog.hashnode.dev/esp32-embedded-rust-at-the-hal-gpio-interrupts
• with example on Wokwi: https://wokwi.com/projects/365976795456621569

Recent Events

• Space Conference - AeroRust - 3rd-4th June - Plovdiv - Slides of Faster Embedded Rust Development for ESP32 with Wokwi

Future Events

• MakerFaire - 10th-11th June - Prague - https://makerfaire.cz/mesto/praha/
• Rust CZ/SK Meetup Brno - 15th June
• Espressif DevCon 2023 - 12th-13th September - Call for papers - https://devcon.espressif.com/

Experiments

• AXP192 driver for M5Stack Core2 - https://github.com/georgik/axp192-rs

[bjoernQ]

(probably won't be able to attend the meeting due to public holiday)

esp-hal

• fix ESP32-H2 direct-boot
  • Fix ESP32-H2 direct-boot esp-hal#570

esp-wifi

• revised initialization

  • Revise Initialization Code esp-wifi-sys#193
  • Rework initialization esp-wifi-sys#194
  • make it possible to "dynamically" initialize for BLE, Wifi or both (depending on features)
  • simplify the async feature selection

• make ESP32-C2 BLE work again and finally fix memory allocation problems

  • Make ESP32-C2 BLE work again esp-wifi-sys#195

espflash

• analzyed a weird problem with flashing C6 / H2 from Windows (systimer interrupts not working)
  • turned out downgrading crossterm dependency to 0.25.0 fixes this .... very weird
  • already fixed by Jesse - I can confirm it's working fine again now

matter-rs

• finally got the full-async branch working on bare-metal

802.15.4

• created an extcap to use the C6 as a sniffer in Wireshark

• minor fix after Jesse's blob updates

Other

• https://github.com/bjoernQ/mksettings

  • might be useful if struggling with RA in VSCode when working with esp-hal-common or esp-wifi

• bare-metal WiFi provisioning via BLE experiment

  • https://github.com/bjoernQ/esp32c3-ble-provisioning-experiment

• bare-metal example / experiment to show how to implement a captive portal

  • https://github.com/bjoernQ/esp32c3-dhcp-experiment

• experimented with TinyUSB on ESP32-S3 bare-metal

  • got it to work so far - looks promising: got it to enumerate as a USB device
  • getting it into a useable state however will need quite some work - especially making it convenient to use
  • will probably become it's own crate

[jessebraham]

ESP-IDF-PART

• Update all dependencies and bump the MSRV to 1.64 esp-idf-part#21
• Fix the integration tests checking for specific errors esp-idf-part#22
• Ensure partitions do not exceed the maximum allowable size esp-idf-part#23
• Version 0.4.0 esp-idf-part#24
  • https://crates.io/crates/esp-idf-part/0.4.0
• Version 0.4.1 esp-idf-part#26
  • https://crates.io/crates/esp-idf-part/0.4.1

ESPFLASH

• Update to the latest version of addr2line and address breaking changes espflash#412
• Do not require the --partition-table argument when erasing partitions espflash#413
• Fix handling of serial ports on BSD systems espflash#415
• Override the flash size in Flasher if provided via command-line argument espflash#417
• Downgrade crossterm to 0.25.0 espflash#418
• Update the CI workflow espflash#419
• Add missing import when using linux and musl espflash#420
• Update the release workflow espflash#421
• Additionally check the x86_64-unknown-linux-musl target in CI espflash#422
• Update the supported targets for ESP32-C6/H2 espflash#424
• Add a simple pre-commit git hook to verify formatting espflash#425
• Update flasher stubs and bootloaders espflash#426
• Version 2.0.0-rc.4 espflash#428
  • https://crates.io/crates/cargo-espflash/2.0.0-rc.4
  • https://crates.io/crates/espflash/2.0.0-rc.4

ESP-HAL

• Simplify the Delay driver, derive Clone and Copy esp-hal#568
• Add embassy_serial and embassy_wait examples for ESP32-H2 esp-hal#569
• Add initial implementation of radio clocks for ESP32-H2 esp-hal#577

ESP-IEEE802154-RS

• Update to the latest binary blobs from ESP-IDF
  • Working on adding ESP32-H2 support now
  • Once ESP32-H2 support is done, will do some cleanup/refactoring
  • Once both above tasks are complete, will transfer the repo and make it public
    • Timeline undetermined :)

MISCELLANEOUS

• Add the latest mermaid.min.js file book#90
• Update to latest svd2rust and regenerate PACs esp-pacs#125
• Add a basic CI workflow bjoernQ/bleps#18

[MabezDev]

compiler

• 1.70.1 (LLVM 16) has some issues with atomics with opt-level = 0 it seems (see). I've got the LLVM-IR from the issue and reported it internally.
• Added custom risc32-imac for esp-espidf target rust-lang/rust#111369 finally merged, we now have a C6/H2 esp-idf target upstream.

esp-hal

• moved esp-riscv-rt into the esp-hal mono repo
• feat: use vectoring to jump straight to interruptN esp-riscv-rt#11
• Yet more gpio fixes GPIO interrupt handler disables the incorrect interrupt when the request comes from a Bank1 pin esp-hal#571 & Async GPIO multibank fix esp-hal#572

espflash

• derive(Serialize, Deserialize) for PartitionTable esp-idf-part#25
• bump esp-idf-part to v0.4.1 espflash#427

probe-rs

• Add support for flashing esp-idf bootloader based applications: ESP-IDF bootloader format probe-rs/probe-rs#1629
• Add a naive profiler to see where the execution time is spent per function in an application: probe-rs: add a simple profiler probe-rs/probe-rs#1628

[SergioGasquez]

book

• Minor improvements based on feeback book#93
• Overhaul pt2: Writing your own application, tooling and guidelines book#94
• Improve Wokwi section book#96
• Update supported products book#98
• We will be working on: Apply guidelines, fix formatting and update chapter titles book#97

esp-hal

• Initial support for ASSIST_DEBUG in ESP32-H2 esp-hal#566
• Working on debugging hello_rgb example for ESP32-H2
• Tested rng example for ESP32H2
  • Not working either
• I have a branch with some improvements to the clocks: https://github.com/SergioGasquez/esp-hal/tree/fix/clocks
  • Once that I have an LA to verify that I didn't break anything, I'll create the PR

esp-pacs

• esp32h2: Align DEBUG_ASSIST names and update base address esp-pacs#123

espflash

• Add CHANGELOG espflash#416
• Investigation to merge CI files

espup

• Fix update subcommand between versions that only change the subpatch number espup#272
• Update readme espup#278

std-training

• Update dependencies std-training#187

wokwi-builders

• Update dependencies of rust-training-esp32c3 wokwi/wokwi-builders#44

Other

• Update STD training link wokwi/wokwi-docs#179
• fix: Use fail_text input wokwi/wokwi-ci-action#2
• Update Espressif trainings link rust-edu/rust-edu.github.io#7
• Update Espressif trainings link nikitavoloboev/docs#132
• Update STD trainings links esp-rust-board#63
• fix: Ferrous System Espressif training rust-embedded/awesome-embedded-rust#415
• fix: Update Espressif trainings link lborb/book#60
• Minor improvements georgik/axp192-rs#1

[JurajSadel]

esp-hal

• added timer_interrupt H2 example: H2: Add timer_interrupt example esp-hal#576
  • refactored timer driver a bit - which configure default clk_src for Timgs and Wdts
• fixed clock issue in SPI examples: Add all SPI examples for the ESP32-H2 esp-hal#549
• added ADC (without calibration) example H2: Add initial ADC support with example  esp-hal#565
• working on i2s - verifying clock sources https://github.com/JurajSadel/esp-hal/tree/feature/esp32h2-i2s
• tested ADC calibration ADC raw values calibration esp-hal#555