[roll third_party/pigweed] pw_chrono_rp2040: Minor tweaks to documentation and test Surfaces more information about when to use this pw_chrono backend. Also updates the test to poll now() rather than doing arbitrary work to hopefully be less likely to be prone to flake (not that any flakes were observed with the old test design). Original-Fixes: b/303297807 Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/183730 https://pigweed.googlesource.com/pigweed/pigweed third_party/pigweed Rolled-Commits: e982c93aba2cc25..e8de610d576dd4a Roller-URL: https://ci.chromium.org/b/8755911799198176417 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: I7daf85b88ace92eb11c8b27b01b7a2b54e7eac82 Reviewed-on: https://pigweed-review.googlesource.com/c/example/echo/+/192874 Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
This repository contains a minimal example of a Bazel-based Pigweed project. It's an echo application for the STM32F429 Discovery Board.
git clone --recursive https://pigweed.googlesource.com/example/echo
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.
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
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.
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!