roll: pigweed pw_containers: Add DynamicHashMap This change introduces `pw::DynamicHashMap`, an unordered associative container similar to `std::unordered_map` but optimized for embedded environments, using `pw::Allocator` for dynamic memory management. Key features include: - Allocator-based memory management. - API mirroring `std::unordered_map` with additional `try_*` methods to handle allocation failures gracefully. - Hybrid storage: Nodes in `DynamicPtrVector` for linear iteration, buckets in `DynamicDeque` for average O(1) lookups. - Unstable "swap-and-pop" erasure. Includes unit tests and example usage. Original-Bug: 468965406 Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/365692 Original-Revision: 18cdb4578f970bb0cae73cfb036d96ecbd577620 Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed Rolled-Commits: d87becb1ae1b19..18cdb4578f970b Roll-Count: 1 Roller-URL: https://cr-buildbucket.appspot.com/build/8689317339476384673 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: I4904ea7d91cebf41602da04c24f08bc8f6e8815c Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/377792
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.
git clone https://pigweed.googlesource.com/pigweed/quickstart/bazel pw_bazel_quickstart cd pw_bazel_quickstart
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.
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
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
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)
bazelisk test //... will run the unit tests defined in this project, such as the ones in modules/blinky/blinky_test.cc.
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.
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.