Rust ESP32 Community Meeting 2023-03-02

[jessebraham]

Please add topics and links to this discussion.

The meeting is scheduled for 2nd March 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

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[jessebraham]

ESP-HAL

• New releases for all HAL packages:
  • esp32-hal@0.10.0: https://crates.io/crates/esp32-hal/0.10.0
  • esp32c2-hal@0.5.0: https://crates.io/crates/esp32c2-hal/0.5.0
  • esp32c3-hal@0.7.0: https://crates.io/crates/esp32c3-hal/0.7.0
  • esp32s2-hal@0.7.0: https://crates.io/crates/esp32s2-hal/0.7.0
  • esp32s3-hal@0.7.0: https://crates.io/crates/esp32s3-hal/0.7.0
• More new releases (bugfixes):
  • esp-hal-common@0.7.1: https://crates.io/crates/esp-hal-common/0.7.1
  • esp32c2-hal@0.5.1: https://crates.io/crates/esp32c2-hal/0.5.1
• Merged support for the ESP32-C6
  • Add support for the ESP32-C6 esp-hal#392
  • Still unpublished, needs a bit of work still
  • Mostly functional, though!
• Refactor chip-specific code into esp_hal_common::soc module esp-hal#412
• Add examples for the RNG peripheral for all supported devices esp-hal#414
• Load config for each device from a TOML files instead of hard-coding in build script esp-hal#415
• Use latest version of esp-backtrace for all devices esp-hal#416

ESP-{BACKTRACE,PRINTLN}

• Published a new version of esp-println, v0.4.0
  • https://crates.io/crates/esp-println/0.4.0
• Add support for the ESP32-C6 esp-backtrace#26
• New release of esp-backtrace
  • esp-backtrace@0.6.0: https://crates.io/crates/esp-backtrace/0.7.0

SVDS & PACS

• Add missing LP_WDT interrupt for ESP32-C6 esp-pacs#96
• Published first version of esp32c6
  • https://crates.io/crates/esp32c6/0.1.0
• A bunch of SVD cleanup (not published yet)
  • Improve consistency of peripheral instance names
  • General cleanup and improvements
• Fix the memory blocks of the RSA peripheral esp-pacs#97

[MabezDev]

compiler

• Make sure soft math instrinsics are available for xtensa no_std targets: Extend the intrinsics exported for Xtensa no_std rust-lang/compiler-builtins#517
• Doing some more investigation to help solve some of the LLVM backend issues we've been having.

esp-wifi

• Refactor needed to support other stacks: Wifi device refactor esp-wifi-sys#115
• embassy-net implementation for wifi: Async WiFi esp-wifi-sys#125
• Asyncify the rest of WiFi: Async WiFi: connect/disconnect/scan/wait_for_event esp-wifi-sys#129
• Ensure wifi packet buffers are free'd, even if we can't process them: Ensure internal WiFi buffers are freed esp-wifi-sys#128
• Remove unneeded features from examples and esp-wifi esp-wifi-sys#135
• Use peripheral singletons in driver API: Feature/radio singletons esp-wifi-sys#141

embedded-svc

• Add wifi trait: Add async Wifi trait embedded-svc#42

esp-hal

• Second Async driver, Async SPI: Async SPI esp-hal#385
• Add peripheral singletons for esp-wifi to use: Add RADIO peripheral esp-hal#397

espflash

• Update stubs from espflash v4.5 espflash#359

[bjoernQ]

esp-hal

• Fix hidden alignment requirement (SPI) esp-hal#395

  • fixes Crash when using SpiDevice::write (Because of a hidden alignment requirement) esp-hal#295

• Fix direct boot linker script for ESP32-C2/C3 esp-hal#396

  • fixes [Direct boot][RISCV] Interrupt handlers above 13 are not placed correctly in memory esp-hal#386

• Fix spi.dma_write esp-hal#407

  • fixes SPI .dma_write not working as expected esp-hal#404

• ESP32-C2: ets_update_cpu_frequency_rom fix esp-hal#401

• helped a bit with ESP32-C6

• experimented with DEBUG_ASSIST for stack overflow detection

  • works fine but when having multiple switched stacks (i.e. in esp-wifi) it won't work this way
  • have ideas how to do it anyways - need to experiment with that

esp-template

• Simplify the template esp-template#55
  • simplifies things a lot (for us and for users)

esp-println

• Fix/no blocking on unconnected serial jtag esp-println#38
  • optional feature for CR-LF
  • fixed the "no-op" feature
  • don't block when printing to unconnected serial jtag

esp-backtrace

• ESP32 / ESP32-S3: Option to halt both cores on panic / exception
  • Add a feature to halt both cores on ESP32/ESP32-S3 esp-backtrace#25

esp-serial-dbg

• updated dependencies
• any reason to not move it to the esp-rs organization?

esp-web-flash-server

• any reason to not move it to the esp-rs organization? (it's still here https://github.com/bjoernQ/esp-web-flash-server)

esp-wifi

• AP support

  • Add basic AP support esp-wifi-sys#134

• update to latest HALs

  • Adjust for latest HAL esp-wifi-sys#139

• ESP32-C6 WiFi support

  • ESP32-C6 WiFi support esp-wifi-sys#142

Other

• experimented a bit more with SPI DMA and display drivers (ILI-9341)
  • found a problem in the HALs implementation of write_dma (and fixed it - see above)
  • https://github.com/bjoernQ/rust-esp32s3-ili9341
  • a smooth animation of 200x200 pixels fully redrawn every frame

[SergioGasquez]

Rust installer

espup

• espup v0.3.0 is now released! It only installs the required toolchains, see Where should espup install the different toolchains? espup#154 Refactor espup espup#182 for more details.
• Add support for esp32c6 espup#189
• Fix rust-src installation espup#188

rust-build

• Fix nigthly CI and remove CI warnings rust-build#193
• Update esp-template command rust-build#192

FS Training

• Remove espmonitor reference std-training#145
• Add https example CI check and simplify sdkconfig.defaults std-training#142
• Fix Rust on ESP targets chapter link std-training#141
• Remove warn message std-training#139
• Update .cargo/config.toml  std-training#138
• Improve CI and fix examples std-training#135
• Add cfg.toml checks std-training#144

esp-template

• Update devcontainers esp-template#56
• Opened Format resulting code cargo-generate/cargo-generate#884 and Define a prompt order cargo-generate/cargo-generate#885

Wokwi

• Fix rust-std-esp32c3 builder wokwi/wokwi-builders#26
• Fixed a few examples of wokwi.com/rust that were not working anymore.

Other

• Installation chapter update book#70
• Improve CI esp-idf-svc#234
• Add Rust on Espressif chips 2023 roadmap rust-lang/this-week-in-rust#4106
• Update training links esp-rust-board#59
• Updated a few repos to use dtolnay/rust-toolchain action:
  • Fix CI warnings embuild#69
  • Fix CI warnings esp-alloc#8
  • Fix CI warnings  esp-backtrace#24
  • Fix CI warnings esp-println#37

Discussions

• Do we want to publish our release artifacts for LLVM and rust in AWS to offer a proxy?
  • Add a Proxy Option for download things from github espup#98
  • It might be worth to wait until we do not need GCC as it would make things a lot simpler
• Shall we add a diagram in the book or in the organization README?
  • Example: https://sharing.clickup.com/9008002852/wb/8cepdt4-184/whiteboard
• Do we want to add cargo-outdated check? Add cargo-outdated check esp-template#53
• GCC had a new release: https://github.com/espressif/crosstool-NG/releases/tag/esp-12.2.0_20230208, shall we update espup to use it?

[georgik]

Rust Releases

• 1.67.0.0 - current version
• 1.68.0.0 - scheduled - around 9th March 2023

Events

• Embedded World 2023 - https://www.embedded-world.de/ - Espressif team will be there during the whole event

Slint UI

• successful build - increased performance by setting CPU freq to 240 and SPI to higher freq
  
• https://github.com/slint-ui/slint/tree/master/examples/mcu-board-support/esp32_s3_box

Experiments

• Spooky Maze - esp-hal update - https://github.com/georgik/esp32-spooky-maze-game
• Rust Multi Target Template - esp-hal-update - https://github.com/georgik/esp32-rust-multi-target-template

Wokwi - state of GPIOs

• Run a simulation, hit the pause button - https://wokwi.com/rust

CLion IDE Improvements

• continued in discussion with JetBrains about Rust plugin for Idea/CLion
• gathered feedback and issues: ESP32 support in CLion/IntelliJ Idea #162
• current limitation - multi-package projects might not resolve all dependencies
• example of how to configure for espflash 2.x:
  
• make sure to check Emulate terminal in output console to properly interact with espflash

[JurajSadel]

esp-hal

• again, big thanks to @bjoernQ @jessebraham @MabezDev for having finally merged initial C6 support
• initial RTC support Update RWDT and refactor RTC jessebraham/esp-hal#3
• fix SPI and RTC clock issues Fix SPI clocks and rtc_watchdog example  jessebraham/esp-hal#6
• started working on embedded_hal_async::i2c::I2c, still in the early stage

[playfulFence]

esp-now

• Tested the functionality of esp-now in esp-hal
• Created an example of transferring temperature/accelerometer data with @jessebraham's icm42670 crate via esp-now connection (esp-now-example)

Wokwi

• Updated all examples at wokwi.com/rust under my maintenance, they're all up now.

Examples

• Updated esp-clock example
• Started working on reimplementation esp-clock in no_std Rust. (will become a basis for my bachelor's thesis).

[jessebraham]

The next meeting: 16th March - 5pm (GMT+1 a.k.a. Brno time )