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pigweed/pigweed/quickstart/bazel/c86c2b5a108f9e515977e4f94c312d420dc769d4
commit
c86c2b5a108f9e515977e4f94c312d420dc769d4
[log]
author
Michael Mogenson <mogenson@pigweed.infra.roller.google.com>
Thu Mar 05 16:19:26 2026 -0800
committer
CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Thu Mar 05 16:19:26 2026 -0800
tree
ca2a4a6dc30cf855aa90fb53c7bfda838f019e56
parent
cd9642361eb45a787c3d32c07b5a1887980ca52f [diff]
roll: pigweed pw_work_queue: Add clear() to CustomWorkQueue

Adds a `Clear()` method to `CustomWorkQueue` that allows users to
remove all pending work items from the queue. This is useful for
cancelling scheduled work during state transitions or error recovery
without needing to stop the worker thread.

Included a unit test to verify that `Clear()` correctly removes
enqueued items before they are processed by a worker thread.

Original-Bug: 484218658
Test: work_queue_test.cc
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/382452
Original-Revision: fb0b0ccaeaf635386628e76b6324e26edc5eb88b

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 992c1acc0167ed..fb0b0ccaeaf635
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8688124363135589057
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ibd63abbb95a67476e0563fa93785739fc9fcc970
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/382572
1 file changed
tree: ca2a4a6dc30cf855aa90fb53c7bfda838f019e56
  1. .github/
  2. .vscode/
  3. apps/
  4. modules/
  5. system/
  6. targets/
  7. tools/
  8. .bazelignore
  9. .bazelrc
  10. .bazelversion
  11. .buildifier.json
  12. .clang-format
  13. .clang-tidy
  14. .clangd.shared
  15. .gitignore
  16. .pw_console.yaml
  17. .pylintrc
  18. AUTHORS
  19. BUILD.bazel
  20. CONTRIBUTING.md
  21. LICENSE
  22. MODULE.bazel
  23. MODULE.bazel.lock
  24. mypy.ini
  25. OWNERS
  26. pw
  27. README.md
  28. workflows.json
README.md

Pigweed: minimal Bazel example

This repository contains a minimal example of a Bazel-based Pigweed project. It is a LED-blinking service (featuring RPC control!) for the Raspberry Pi Pico. It can also be run on any computer using the included simulator.

Getting the code

git clone https://pigweed.googlesource.com/pigweed/quickstart/bazel pw_bazel_quickstart
cd pw_bazel_quickstart

Dependencies

The only dependency that must be installed is Bazelisk.

Bazelisk is a launcher for the Bazel build system that allows for easy management of multiple Bazel versions.

Instructions for installing Bazelisk can be found here.

Running on the simulator

To run the simulator, type: bazelisk run //apps/blinky:simulator_blinky Then, in a new console, connect to the simulator using: bazelisk run //apps/blinky:simulator_console

Running on hardware

To start, connect a Raspberry Pi Pico, Pico 2, or debug probe via USB.

To run on the Raspberry Pi Pico, type: bazelisk run //apps/blinky:flash_rp2040 Then, in a new console, connect to the device using: bazelisk run //apps/blinky:rp2040_console

Controlling the LED

Once connected with a console, RPCs can be sent to control the LED. Try running:

device.set_led(True)
device.set_led(False)
device.toggle_led()
device.blink(blink_count=3)

Running unit tests on the host device

bazelisk test //... will run the unit tests defined in this project, such as the ones in modules/blinky/blinky_test.cc.

Running unit tests on hardware

bazelisk run @pigweed//targets/rp2040/py:unit_test_server in one console followed by bazelisk test //... --config=rp2040 will also allow running the unit tests on-device.

Next steps

Try poking around the codebase for inspiration about how Pigweed projects can be organized. Most of the relevant code in this quickstart (including RPC definitions) is inside modules/blinky, with some client-side Python code in tools/console.py.