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pigweed / pigweed / quickstart / bazel / 8cb149a851fcd6f40b9d12517849346a221c71ea
commit8cb149a851fcd6f40b9d12517849346a221c71ea[log] [tgz]
authorTed Pudlik <tpudlik@pigweed.infra.roller.google.com>Wed Jul 03 20:36:40 2024 +0000
committerCQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jul 03 20:36:40 2024 +0000
tree36b90f21afe17949ca17c98548442a4dffff0465
parentf30a6ba6041b3fb94b835fbf1f10a4945aba56f6 [diff]
roll: pigweed, pw_toolchain: bazel: Provide backend collections as dicts

Implements the pattern suggested in
https://pigweed.dev/bazel_compatibility.html#provide-default-backend-collections-as-dicts.

See http://pwrev.dev/219871 for an example of how this is intended to be
used. We'll probably remove the merge_flags_for_transition_impl and
merge_flags_for_transition_outputs helpers once we've migrated to
platform-based flags.

Original-Bug: 344654805
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/219911
Lint: Ted Pudlik <tpudlik@google.com>

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: 4a79fe82a35e6b8..db3b2adb2df73dc
Roller-URL: https://ci.chromium.org/b/8743402210892237393
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I05bff3e2f64284a18a12624d845309453ee3fa2d
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/220115
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
1 file changed
tree: 36b90f21afe17949ca17c98548442a4dffff0465
  1. .github/
  2. src/
  3. targets/
  4. tools/
  5. .bazelignore
  6. .bazelrc
  7. .bazelversion
  8. .gitignore
  9. BUILD.bazel
  10. echo.bzl
  11. LICENSE
  12. pigweed.json
  13. README.md
  14. requirements.in
  15. requirements_lock.txt
  16. WORKSPACE
README.md

Pigweed: minimal Bazel example

This repository contains a minimal example of a Bazel-based Pigweed project. It's an echo application for the STM32F429 Discovery Board.

Cloning

git clone --recursive https://pigweed.googlesource.com/pigweed/quickstart/bazel

If you already cloned but forgot to include --recursive, run git submodule update --init to pull all submodules.

TODO: b/300695111 - Don't require submodules for this example.

Building

We‘ll assume you already have Bazel on your system. If you don’t, the recommended way to get it is through Bazelisk.

To build the entire project (including building the application for both the host and the STM32 Discovery Board), run

bazel build //...

To run the application locally on your machine, run,

bazel run //src:echo

Flashing

To flash the firmware to a STM32F429 Discovery Board connected to your machine, run,

bazel run //tools:flash

Note that you don't need to build the firmware first: Bazel knows that the firmware images are needed to flash the board, and will build them for you. And if you edit the source of the firmware or any of its dependencies, it will get rebuilt when you flash.

Communicating

Run,

bazel run //tools:miniterm -- /dev/ttyACM0 --filter=debug

to communicate with the board. When you transmit a character, you should get the same character back!