Add hello_dts sample
This sample simply reads a few properties from devicetree and prints
them. It is based on the Pigweed echo sample.
BUG=b/346596832
Change-Id: I8f6a2e18e9fafc52822edd3e948bc318bef6837c
Reviewed-on: https://pigweed-review.googlesource.com/c/zephyr/zephyr-bazel/+/219712
Commit-Queue: Yuval Peress <peress@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Pigweed-Auto-Submit: Yuval Peress <peress@google.com>
Reviewed-by: Sergio Soares <sergiosoares@google.com>
diff --git a/examples/hello_dts/.bazelrc b/examples/hello_dts/.bazelrc
new file mode 100644
index 0000000..7aa7dd6
--- /dev/null
+++ b/examples/hello_dts/.bazelrc
@@ -0,0 +1,27 @@
+# Copyright 2023 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# TODO: https://pwbug.dev/258836641#comment4: Enabling bzlmod breaks the build.
+common --noenable_bzlmod
+
+# TODO: https://pwbug.dev/319665090: Disable hermetic sandbox tmp due to issues
+# with arm toolchain.
+build --noincompatible_sandbox_hermetic_tmp
+
+# Do not attempt to configure an autodetected (local) toolchain. We vendor all
+# our toolchains, and CI VMs may not have any local toolchain to detect.
+common --repo_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
+
+# Required for new toolchain resolution API.
+build --incompatible_enable_cc_toolchain_resolution
diff --git a/examples/hello_dts/.gitignore b/examples/hello_dts/.gitignore
new file mode 100644
index 0000000..6d8ad95
--- /dev/null
+++ b/examples/hello_dts/.gitignore
@@ -0,0 +1 @@
+bazel-*
\ No newline at end of file
diff --git a/examples/hello_dts/BUILD.bazel b/examples/hello_dts/BUILD.bazel
new file mode 100644
index 0000000..52edefa
--- /dev/null
+++ b/examples/hello_dts/BUILD.bazel
@@ -0,0 +1,58 @@
+# Copyright 2024 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+load("@zephyr-bazel//:defs.bzl", "dts_cc_library")
+package(default_visibility = ["//visibility:public"])
+
+label_flag(
+ name = "pw_assert_backend_impl",
+ build_setting_default = "@pigweed//pw_assert_log:assert_backend",
+)
+
+dts_cc_library(
+ name = "app_host_dts",
+ dts_lib = "@zephyr-bazel//boards/native/native_sim:native_sim",
+)
+
+cc_binary(
+ name = "app",
+ srcs = ["hello_dts.cc"],
+ malloc = select({
+ "@platforms//cpu:armv7e-m": "@pigweed//pw_malloc",
+ "@platforms//cpu:x86_64": "@bazel_tools//tools/cpp:malloc",
+ }),
+ deps = [
+ "@pigweed//pw_log",
+ "@pigweed//pw_sys_io",
+ "@pigweed//pw_assert:backend_impl",
+ "@pigweed//pw_log:backend_impl",
+ "@zephyr-bazel//:zephyr",
+ ] + select({
+ "@platforms//cpu:armv7e-m": [
+ "@pigweed//pw_toolchain/arm_gcc:arm_none_eabi_gcc_support",
+ "@pigweed//targets/stm32f429i_disc1:basic_linker_script",
+ "@pigweed//targets/stm32f429i_disc1:pre_init",
+ ],
+ "@platforms//cpu:x86_64": [
+ "@zephyr-bazel//:posix",
+ ":app_host_dts",
+ ],
+ }),
+ copts = select({
+ "@platforms//cpu:armv7e-m": [],
+ "@platforms//cpu:x86_64": [
+ "-DCONFIG_ARCH_POSIX=1",
+ ],
+ }),
+)
diff --git a/examples/hello_dts/MODULE.bazel b/examples/hello_dts/MODULE.bazel
new file mode 100644
index 0000000..00bb183
--- /dev/null
+++ b/examples/hello_dts/MODULE.bazel
@@ -0,0 +1,6 @@
+###############################################################################
+# Bazel now uses Bzlmod by default to manage external dependencies.
+# Please consider migrating your external dependencies from WORKSPACE to MODULE.bazel.
+#
+# For more details, please check https://github.com/bazelbuild/bazel/issues/18958
+###############################################################################
diff --git a/examples/hello_dts/MODULE.bazel.lock b/examples/hello_dts/MODULE.bazel.lock
new file mode 100644
index 0000000..f5cd531
--- /dev/null
+++ b/examples/hello_dts/MODULE.bazel.lock
@@ -0,0 +1,110 @@
+{
+ "lockFileVersion": 11,
+ "registryFileHashes": {
+ "https://bcr.bazel.build/bazel_registry.json": "8a28e4aff06ee60aed2a8c281907fb8bcbf3b753c91fb5a5c57da3215d5b3497",
+ "https://bcr.bazel.build/modules/abseil-cpp/20210324.2/MODULE.bazel": "7cd0312e064fde87c8d1cd79ba06c876bd23630c83466e9500321be55c96ace2",
+ "https://bcr.bazel.build/modules/abseil-cpp/20211102.0/MODULE.bazel": "70390338f7a5106231d20620712f7cccb659cd0e9d073d1991c038eb9fc57589",
+ "https://bcr.bazel.build/modules/abseil-cpp/20211102.0/source.json": "7e3a9adf473e9af076ae485ed649d5641ad50ec5c11718103f34de03170d94ad",
+ "https://bcr.bazel.build/modules/apple_support/1.5.0/MODULE.bazel": "50341a62efbc483e8a2a6aec30994a58749bd7b885e18dd96aa8c33031e558ef",
+ "https://bcr.bazel.build/modules/apple_support/1.5.0/source.json": "eb98a7627c0bc486b57f598ad8da50f6625d974c8f723e9ea71bd39f709c9862",
+ "https://bcr.bazel.build/modules/bazel_features/1.11.0/MODULE.bazel": "f9382337dd5a474c3b7d334c2f83e50b6eaedc284253334cf823044a26de03e8",
+ "https://bcr.bazel.build/modules/bazel_features/1.11.0/source.json": "c9320aa53cd1c441d24bd6b716da087ad7e4ff0d9742a9884587596edfe53015",
+ "https://bcr.bazel.build/modules/bazel_skylib/1.0.3/MODULE.bazel": "bcb0fd896384802d1ad283b4e4eb4d718eebd8cb820b0a2c3a347fb971afd9d8",
+ "https://bcr.bazel.build/modules/bazel_skylib/1.2.1/MODULE.bazel": "f35baf9da0efe45fa3da1696ae906eea3d615ad41e2e3def4aeb4e8bc0ef9a7a",
+ "https://bcr.bazel.build/modules/bazel_skylib/1.3.0/MODULE.bazel": "20228b92868bf5cfc41bda7afc8a8ba2a543201851de39d990ec957b513579c5",
+ "https://bcr.bazel.build/modules/bazel_skylib/1.6.1/MODULE.bazel": "8fdee2dbaace6c252131c00e1de4b165dc65af02ea278476187765e1a617b917",
+ "https://bcr.bazel.build/modules/bazel_skylib/1.6.1/source.json": "082ed5f9837901fada8c68c2f3ddc958bb22b6d654f71dd73f3df30d45d4b749",
+ "https://bcr.bazel.build/modules/buildozer/7.1.2/MODULE.bazel": "2e8dd40ede9c454042645fd8d8d0cd1527966aa5c919de86661e62953cd73d84",
+ "https://bcr.bazel.build/modules/buildozer/7.1.2/source.json": "c9028a501d2db85793a6996205c8de120944f50a0d570438fcae0457a5f9d1f8",
+ "https://bcr.bazel.build/modules/googletest/1.11.0/MODULE.bazel": "3a83f095183f66345ca86aa13c58b59f9f94a2f81999c093d4eeaa2d262d12f4",
+ "https://bcr.bazel.build/modules/googletest/1.11.0/source.json": "c73d9ef4268c91bd0c1cd88f1f9dfa08e814b1dbe89b5f594a9f08ba0244d206",
+ "https://bcr.bazel.build/modules/platforms/0.0.4/MODULE.bazel": "9b328e31ee156f53f3c416a64f8491f7eb731742655a47c9eec4703a71644aee",
+ "https://bcr.bazel.build/modules/platforms/0.0.5/MODULE.bazel": "5733b54ea419d5eaf7997054bb55f6a1d0b5ff8aedf0176fef9eea44f3acda37",
+ "https://bcr.bazel.build/modules/platforms/0.0.6/MODULE.bazel": "ad6eeef431dc52aefd2d77ed20a4b353f8ebf0f4ecdd26a807d2da5aa8cd0615",
+ "https://bcr.bazel.build/modules/platforms/0.0.7/MODULE.bazel": "72fd4a0ede9ee5c021f6a8dd92b503e089f46c227ba2813ff183b71616034814",
+ "https://bcr.bazel.build/modules/platforms/0.0.9/MODULE.bazel": "4a87a60c927b56ddd67db50c89acaa62f4ce2a1d2149ccb63ffd871d5ce29ebc",
+ "https://bcr.bazel.build/modules/platforms/0.0.9/source.json": "cd74d854bf16a9e002fb2ca7b1a421f4403cda29f824a765acd3a8c56f8d43e6",
+ "https://bcr.bazel.build/modules/protobuf/21.7/MODULE.bazel": "a5a29bb89544f9b97edce05642fac225a808b5b7be74038ea3640fae2f8e66a7",
+ "https://bcr.bazel.build/modules/protobuf/21.7/source.json": "bbe500720421e582ff2d18b0802464205138c06056f443184de39fbb8187b09b",
+ "https://bcr.bazel.build/modules/protobuf/3.19.0/MODULE.bazel": "6b5fbb433f760a99a22b18b6850ed5784ef0e9928a72668b66e4d7ccd47db9b0",
+ "https://bcr.bazel.build/modules/protobuf/3.19.6/MODULE.bazel": "9233edc5e1f2ee276a60de3eaa47ac4132302ef9643238f23128fea53ea12858",
+ "https://bcr.bazel.build/modules/rules_cc/0.0.1/MODULE.bazel": "cb2aa0747f84c6c3a78dad4e2049c154f08ab9d166b1273835a8174940365647",
+ "https://bcr.bazel.build/modules/rules_cc/0.0.2/MODULE.bazel": "6915987c90970493ab97393024c156ea8fb9f3bea953b2f3ec05c34f19b5695c",
+ "https://bcr.bazel.build/modules/rules_cc/0.0.8/MODULE.bazel": "964c85c82cfeb6f3855e6a07054fdb159aced38e99a5eecf7bce9d53990afa3e",
+ "https://bcr.bazel.build/modules/rules_cc/0.0.9/MODULE.bazel": "836e76439f354b89afe6a911a7adf59a6b2518fafb174483ad78a2a2fde7b1c5",
+ "https://bcr.bazel.build/modules/rules_cc/0.0.9/source.json": "1f1ba6fea244b616de4a554a0f4983c91a9301640c8fe0dd1d410254115c8430",
+ "https://bcr.bazel.build/modules/rules_java/4.0.0/MODULE.bazel": "5a78a7ae82cd1a33cef56dc578c7d2a46ed0dca12643ee45edbb8417899e6f74",
+ "https://bcr.bazel.build/modules/rules_java/7.6.1/MODULE.bazel": "2f14b7e8a1aa2f67ae92bc69d1ec0fa8d9f827c4e17ff5e5f02e91caa3b2d0fe",
+ "https://bcr.bazel.build/modules/rules_java/7.6.1/source.json": "8f3f3076554e1558e8e468b2232991c510ecbcbed9e6f8c06ac31c93bcf38362",
+ "https://bcr.bazel.build/modules/rules_jvm_external/4.4.2/MODULE.bazel": "a56b85e418c83eb1839819f0b515c431010160383306d13ec21959ac412d2fe7",
+ "https://bcr.bazel.build/modules/rules_jvm_external/4.4.2/source.json": "a075731e1b46bc8425098512d038d416e966ab19684a10a34f4741295642fc35",
+ "https://bcr.bazel.build/modules/rules_license/0.0.3/MODULE.bazel": "627e9ab0247f7d1e05736b59dbb1b6871373de5ad31c3011880b4133cafd4bd0",
+ "https://bcr.bazel.build/modules/rules_license/0.0.7/MODULE.bazel": "088fbeb0b6a419005b89cf93fe62d9517c0a2b8bb56af3244af65ecfe37e7d5d",
+ "https://bcr.bazel.build/modules/rules_license/0.0.7/source.json": "355cc5737a0f294e560d52b1b7a6492d4fff2caf0bef1a315df5a298fca2d34a",
+ "https://bcr.bazel.build/modules/rules_pkg/0.7.0/MODULE.bazel": "df99f03fc7934a4737122518bb87e667e62d780b610910f0447665a7e2be62dc",
+ "https://bcr.bazel.build/modules/rules_pkg/0.7.0/source.json": "c2557066e0c0342223ba592510ad3d812d4963b9024831f7f66fd0584dd8c66c",
+ "https://bcr.bazel.build/modules/rules_proto/4.0.0/MODULE.bazel": "a7a7b6ce9bee418c1a760b3d84f83a299ad6952f9903c67f19e4edd964894e06",
+ "https://bcr.bazel.build/modules/rules_proto/5.3.0-21.7/MODULE.bazel": "e8dff86b0971688790ae75528fe1813f71809b5afd57facb44dad9e8eca631b7",
+ "https://bcr.bazel.build/modules/rules_proto/5.3.0-21.7/source.json": "d57902c052424dfda0e71646cb12668d39c4620ee0544294d9d941e7d12bc3a9",
+ "https://bcr.bazel.build/modules/rules_python/0.10.2/MODULE.bazel": "cc82bc96f2997baa545ab3ce73f196d040ffb8756fd2d66125a530031cd90e5f",
+ "https://bcr.bazel.build/modules/rules_python/0.22.1/MODULE.bazel": "26114f0c0b5e93018c0c066d6673f1a2c3737c7e90af95eff30cfee38d0bbac7",
+ "https://bcr.bazel.build/modules/rules_python/0.22.1/source.json": "57226905e783bae7c37c2dd662be078728e48fa28ee4324a7eabcafb5a43d014",
+ "https://bcr.bazel.build/modules/rules_python/0.4.0/MODULE.bazel": "9208ee05fd48bf09ac60ed269791cf17fb343db56c8226a720fbb1cdf467166c",
+ "https://bcr.bazel.build/modules/stardoc/0.5.1/MODULE.bazel": "1a05d92974d0c122f5ccf09291442580317cdd859f07a8655f1db9a60374f9f8",
+ "https://bcr.bazel.build/modules/stardoc/0.5.1/source.json": "a96f95e02123320aa015b956f29c00cb818fa891ef823d55148e1a362caacf29",
+ "https://bcr.bazel.build/modules/upb/0.0.0-20220923-a547704/MODULE.bazel": "7298990c00040a0e2f121f6c32544bab27d4452f80d9ce51349b1a28f3005c43",
+ "https://bcr.bazel.build/modules/upb/0.0.0-20220923-a547704/source.json": "f1ef7d3f9e0e26d4b23d1c39b5f5de71f584dd7d1b4ef83d9bbba6ec7a6a6459",
+ "https://bcr.bazel.build/modules/zlib/1.2.11/MODULE.bazel": "07b389abc85fdbca459b69e2ec656ae5622873af3f845e1c9d80fe179f3effa0",
+ "https://bcr.bazel.build/modules/zlib/1.2.12/MODULE.bazel": "3b1a8834ada2a883674be8cbd36ede1b6ec481477ada359cd2d3ddc562340b27",
+ "https://bcr.bazel.build/modules/zlib/1.3/MODULE.bazel": "6a9c02f19a24dcedb05572b2381446e27c272cd383aed11d41d99da9e3167a72",
+ "https://bcr.bazel.build/modules/zlib/1.3/source.json": "b6b43d0737af846022636e6e255fd4a96fee0d34f08f3830e6e0bac51465c37c"
+ },
+ "selectedYankedVersions": {},
+ "moduleExtensions": {
+ "@@apple_support~//crosstool:setup.bzl%apple_cc_configure_extension": {
+ "general": {
+ "bzlTransitiveDigest": "PjIds3feoYE8SGbbIq2SFTZy3zmxeO2tQevJZNDo7iY=",
+ "usagesDigest": "aLmqbvowmHkkBPve05yyDNGN7oh7QE9kBADr3QIZTZs=",
+ "recordedFileInputs": {},
+ "recordedDirentsInputs": {},
+ "envVariables": {},
+ "generatedRepoSpecs": {
+ "local_config_apple_cc": {
+ "bzlFile": "@@apple_support~//crosstool:setup.bzl",
+ "ruleClassName": "_apple_cc_autoconf",
+ "attributes": {}
+ },
+ "local_config_apple_cc_toolchains": {
+ "bzlFile": "@@apple_support~//crosstool:setup.bzl",
+ "ruleClassName": "_apple_cc_autoconf_toolchains",
+ "attributes": {}
+ }
+ },
+ "recordedRepoMappingEntries": [
+ [
+ "apple_support~",
+ "bazel_tools",
+ "bazel_tools"
+ ]
+ ]
+ }
+ },
+ "@@platforms//host:extension.bzl%host_platform": {
+ "general": {
+ "bzlTransitiveDigest": "xelQcPZH8+tmuOHVjL9vDxMnnQNMlwj0SlvgoqBkm4U=",
+ "usagesDigest": "meSzxn3DUCcYEhq4HQwExWkWtU4EjriRBQLsZN+Q0SU=",
+ "recordedFileInputs": {},
+ "recordedDirentsInputs": {},
+ "envVariables": {},
+ "generatedRepoSpecs": {
+ "host_platform": {
+ "bzlFile": "@@platforms//host:extension.bzl",
+ "ruleClassName": "host_platform_repo",
+ "attributes": {}
+ }
+ },
+ "recordedRepoMappingEntries": []
+ }
+ }
+ }
+}
diff --git a/examples/hello_dts/WORKSPACE b/examples/hello_dts/WORKSPACE
new file mode 100644
index 0000000..2dd0fd4
--- /dev/null
+++ b/examples/hello_dts/WORKSPACE
@@ -0,0 +1,176 @@
+# Copyright 2024 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+
+# Load Pigweed's own dependencies that we'll need.
+#
+# TODO: b/274148833 - Don't require users to spell these out.
+http_archive(
+ name = "platforms",
+ urls = [
+ "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.10/platforms-0.0.10.tar.gz",
+ "https://github.com/bazelbuild/platforms/releases/download/0.0.10/platforms-0.0.10.tar.gz",
+ ],
+ sha256 = "218efe8ee736d26a3572663b374a253c012b716d8af0c07e842e82f238a0a7ee",
+)
+
+http_archive(
+ name = "bazel_skylib",
+ sha256 = "bc283cdfcd526a52c3201279cda4bc298652efa898b10b4db0837dc51652756f",
+ urls = [
+ "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.7.1/bazel-skylib-1.7.1.tar.gz",
+ "https://github.com/bazelbuild/bazel-skylib/releases/download/1.7.1/bazel-skylib-1.7.1.tar.gz",
+ ],
+)
+
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()
+
+http_archive(
+ name = "rules_cc",
+ sha256 = "d75a040c32954da0d308d3f2ea2ba735490f49b3a7aa3e4b40259ca4b814f825",
+ # strip_prefix = "rules_cc-0.0.10-rc1",
+ urls = [
+ "https://github.com/bazelbuild/rules_cc/releases/download/0.0.10-rc1/rules_cc-0.0.10-rc1.tar.gz",
+ ],
+)
+
+load("@rules_cc//cc:repositories.bzl", "rules_cc_dependencies", "rules_cc_toolchains")
+rules_cc_dependencies()
+rules_cc_toolchains()
+
+http_archive(
+ name = "rules_proto",
+ sha256 = "dc3fb206a2cb3441b485eb1e423165b231235a1ea9b031b4433cf7bc1fa460dd",
+ strip_prefix = "rules_proto-5.3.0-21.7",
+ urls = [
+ "https://github.com/bazelbuild/rules_proto/archive/refs/tags/5.3.0-21.7.tar.gz",
+ ],
+)
+
+http_archive(
+ name = "rules_python",
+ sha256 = "0a8003b044294d7840ac7d9d73eef05d6ceb682d7516781a4ec62eeb34702578",
+ strip_prefix = "rules_python-0.24.0",
+ url = "https://github.com/bazelbuild/rules_python/releases/download/0.24.0/rules_python-0.24.0.tar.gz",
+)
+
+load("@rules_python//python:repositories.bzl", "py_repositories")
+
+py_repositories()
+
+http_archive(
+ name = "com_google_protobuf",
+ sha256 = "c6003e1d2e7fefa78a3039f19f383b4f3a61e81be8c19356f85b6461998ad3db",
+ strip_prefix = "protobuf-3.17.3",
+ url = "https://github.com/protocolbuffers/protobuf/archive/v3.17.3.tar.gz",
+)
+
+load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
+
+protobuf_deps()
+
+git_repository(
+ name = "pigweed",
+ remote = "https://github.com/google/pigweed",
+ branch = "main",
+)
+
+git_repository(
+ name = "pw_toolchain",
+ remote = "https://github.com/google/pigweed",
+ branch = "main",
+ strip_prefix = "pw_toolchain_bazel",
+)
+
+git_repository(
+ name = "zephyr", # Give it a distinct name
+ remote = "https://github.com/zephyrproject-rtos/zephyr.git",
+ branch = "main",
+ build_file_content = """
+load("@bazel_skylib//rules/directory:directory.bzl", "directory")
+package(default_visibility = ["//visibility:public"])
+
+exports_files(glob(["**"]))
+
+directory(
+ name = "root",
+ srcs = glob(["**"], exclude = ["BUILD"])
+)
+""",
+)
+
+local_repository(
+ name = "zephyr-bazel",
+ path = "../..",
+)
+
+# Get ready to grab CIPD dependencies. For this minimal example, the only
+# dependencies will be the toolchains and OpenOCD (used for flashing).
+load(
+ "@pigweed//pw_env_setup/bazel/cipd_setup:cipd_rules.bzl",
+ "cipd_client_repository",
+ "cipd_repository",
+)
+
+cipd_client_repository()
+
+
+load("@pigweed//pw_toolchain:register_toolchains.bzl", "register_pigweed_cxx_toolchains")
+
+register_pigweed_cxx_toolchains()
+
+# Get the OpenOCD binary (we'll use it for flashing).
+cipd_repository(
+ name = "openocd",
+ path = "infra/3pp/tools/openocd/${os}-${arch}",
+ tag = "version:2@0.11.0-3",
+)
+
+load("@rules_python//python:repositories.bzl", "python_register_toolchains")
+
+# Set up the Python interpreter and PyPI dependencies we'll need.
+python_register_toolchains(
+ name = "python3",
+ python_version = "3.11",
+)
+
+load("@python3//:defs.bzl", "interpreter")
+load("@rules_python//python:pip.bzl", "pip_parse")
+
+pip_parse(
+ name = "pypi",
+ python_interpreter_target = interpreter,
+ requirements_lock = "//:requirements_lock.txt",
+)
+
+load("@pypi//:requirements.bzl", "install_deps")
+
+install_deps()
+
+# Load the Zephyr pip requirements
+pip_parse(
+ name = "py_deps",
+ python_interpreter_target = interpreter,
+ requirements_lock = "@@zephyr//:scripts/requirements-base.txt",
+)
+
+load("@py_deps//:requirements.bzl", zephyr_install_deps = "install_deps")
+
+zephyr_install_deps()
+
diff --git a/examples/hello_dts/hello_dts.cc b/examples/hello_dts/hello_dts.cc
new file mode 100644
index 0000000..0db48f5
--- /dev/null
+++ b/examples/hello_dts/hello_dts.cc
@@ -0,0 +1,25 @@
+// Copyright 2024 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "zephyr/devicetree.h"
+#include "pw_log/log.h"
+
+int main() {
+ PW_LOG_INFO("Devicetree info:");
+ const char * str = DT_PROP(DT_ROOT, compatible);
+ PW_LOG_INFO(" compatible: %s", str);
+ str = DT_PROP(DT_NODELABEL(cpu0), compatible);
+ PW_LOG_INFO(" cpu0: %s", str);
+ return 0;
+}
diff --git a/examples/hello_dts/requirements.in b/examples/hello_dts/requirements.in
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/examples/hello_dts/requirements.in
diff --git a/examples/hello_dts/requirements_lock.txt b/examples/hello_dts/requirements_lock.txt
new file mode 100644
index 0000000..5a7cd14
--- /dev/null
+++ b/examples/hello_dts/requirements_lock.txt
@@ -0,0 +1,6 @@
+#
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
+#
+# bazel run //:pip_requirements.update
+#
\ No newline at end of file
