Google GitGoogle Git
Sign in
pigweed/pigweed/quickstart/bazel/1962940e880a4b00535ab05b0ecfe3c9e418d4ae
commit
1962940e880a4b00535ab05b0ecfe3c9e418d4ae
[log]
author
Dave Roth <davidroth@pigweed.infra.roller.google.com>
Fri Aug 21 17:54:19 2026 -0700
committer
CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fri Aug 21 17:54:19 2026 -0700
tree
40e9360dbca6259565890a4c81f5d7c2f58a49ef
parent
c6024f9f89436722557a6d40d5c5d3f85562d432 [diff]
roll: pigweed rp2350: Select primary serial port for multi-interface devices

Devices like debug probes and multi-port RP2 targets can expose multiple
CDC-ACM serial interfaces sharing the same USB serial number. On macOS,
enumerating available serial ports lists secondary interfaces after the
primary UART port, causing _detect_pico_serial_ports() to overwrite the
serial port mapping with an inactive interface and resulting in test
timeouts.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/459105
Original-Revision: 294cc866aef685f87ad92502199f6e6257267195

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 79c0e26dd794b7..294cc866aef685
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8672811748721282545
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: If50c98c8cf43099592d0f09ce1f384b6cf72a46c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/459845
1 file changed
tree: 40e9360dbca6259565890a4c81f5d7c2f58a49ef
  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.