Google Git
Sign in
pigweed / pigweed / quickstart / bazel / 14646215e816704a1ddeeb0795503dcae6818506
commit14646215e816704a1ddeeb0795503dcae6818506[log] [tgz]
authorAlexei Frolov <frolv@pigweed.infra.roller.google.com>Mon Sep 29 10:37:30 2025 -0700
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Sep 29 10:37:30 2025 -0700
tree3db6ae79fc949323eba8d22b4cca0957cb8adc80
parent455e036080c3ab3f0ab9cbb778507949892d52dd [diff]
roll: pigweed pw_async2: Experimental ValueFuture

Creates a `ValueFuture` which owns a single value and completes when it
is set. Defines an `ExclusiveValueProvider` and a
`BroadcastValueProvider` to vend `ValueFuture` to one or many consumers,
respectively.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323315
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: 33657af429837b19693427e5052c951317b0efe9

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: a9bda7e611f1b8..33657af429837b
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8702373290915597857
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Iaa5db59a03996475a1663044fc39783a15d5732b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/327013
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
1 file changed
tree: 3db6ae79fc949323eba8d22b4cca0957cb8adc80
  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.