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pigweed/pigweed/quickstart/bazel/ea606f2579fd6bec25aec7968d14ea7e1cc235dc
commit
ea606f2579fd6bec25aec7968d14ea7e1cc235dc
[log]
author
Lloyd Pique <lpique@pigweed.infra.roller.google.com>
Wed Sep 09 10:36:16 2026 -0700
committer
CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed Sep 09 10:36:16 2026 -0700
tree
51797b1ee1244bf82317cd0e409961362209c37d
parent
1bb27c403b17b9cb9a4cfbab2bb93c06f1894efb [diff]
roll: pigweed lint: run pw format --fix BUILD.gn **/*.gn **/*.gni

The gn roll in commit 9cffd077b caused out lintformat builds to fail due
to the format requirements changing. Reformat all the affected files.

Also updates the MODULE.bazel file with the gn version to match the
change made by the roller in the pigweed.json file.

Test: pw presubmit --step gn_format --full  # No more format failures
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/472585
Original-Revision: 581082cc1662e61b2460adae4929097d0c8f21b3

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 294d431a761dc4..581082cc1662e6
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8671117529007030753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I3a654d08861830a677deff34d5850fea72ac89de
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/473145
1 file changed
tree: 51797b1ee1244bf82317cd0e409961362209c37d
  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.