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pigweed / pigweed / quickstart / bazel / 5092152274b2981f451570b5fee30f2bac421937
commit5092152274b2981f451570b5fee30f2bac421937[log] [tgz]
authorArmando Montanez <amontanez@pigweed.infra.roller.google.com>Fri Oct 24 12:43:56 2025 -0700
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Oct 24 12:43:56 2025 -0700
tree7799d15c6b2a527a1f83150346769e6844c188e2
parentee6f715f9ece0f0cbfa4cc481aa5151736db1d61 [diff]
roll: pigweed bazel: Tag deprecated targets with "manual"

Tags targets with a `deprecation` message as "manual", and updates the
Bazel style guide to explain why to do this.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/336236
Original-Revision: 49c68f64c2ff1670c566aeb4f29e282e4315bcaa

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 77ed97d43b4c9c..49c68f64c2ff16
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8700100268060880561
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I99ef15ce82c60be2252b1cfd7f8151fc55944550
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/337672
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
1 file changed
tree: 7799d15c6b2a527a1f83150346769e6844c188e2
  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.