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commit8ee42cd56e29c356d25466e14cbf8cf0ffd2a5f5[log] [tgz]
authorpigweed-roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>Tue Jan 28 18:32:14 2025 -0800
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Jan 28 18:32:14 2025 -0800
treea962bd54d1c4d5376188cd0a769ccd58ff999da7
parenta81399d1c76c4968f67d00f7dcfe863f6bee84f3 [diff]
roll: pigweed af41ce5..9446328 (4 commits)

9446328:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/260413 build: Specify rustc_srcs_subdir for rust_analyzer_toolchains
51a7b5c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/262873 pw_toolchain: Document clang-tidy + Bazel
a2b8aec:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/262752 fuchsia_sdk: Check against accidental downloads
cc8ce41:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/262875 pw_result: clang-tidy fix

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Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/263312
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2 files changed
tree: a962bd54d1c4d5376188cd0a769ccd58ff999da7
  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. .clangd.shared
  14. .gitignore
  15. .pw_console.yaml
  16. AUTHORS
  17. BUILD.bazel
  18. CONTRIBUTING.md
  19. LICENSE
  20. MODULE.bazel
  21. MODULE.bazel.lock
  22. OWNERS
  23. pigweed.json
  24. README.md
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.