pw_chre: Add barebones CHRE

NOTE: This is a very work-in-progress implementation.

Add GN rules for the CHRE codebase into //third_party/CHRE.
This also adds a pw_chre_PLATFORM_BACKEND gn argument for the
platform backend for CHRE.

Add a pw_chre directory that includes all of the class and
function definitions required to compile CHRE. Some of this
connects to pigweed functionality, some of it is stubbed out.

//pw_chre:chre_simulator uses pw_system to run CHRE on
pigweed on the host, and it compiles in a number of CHRE's
example nanoapps. There is enough functionality that these
nanoapps are able to run.

Bug: 294106526

Change-Id: I73ab1a83ccefbe4a7d0f9ba7a5421c3f3391a937
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/162510
Reviewed-by: Kayce Basques <kayce@google.com>
Reviewed-by: Armando Montanez <amontanez@google.com>
Commit-Queue: David Gilhooley <dgilhooley@google.com>
Reviewed-by: Aaron Green <aarongreen@google.com>
49 files changed
tree: 8215f9431976c9519907c6fd4822c20c5b7da00d
  1. .allstar/
  2. .vscode/
  3. build_overrides/
  4. docker/
  5. docs/
  6. pw_alignment/
  7. pw_allocator/
  8. pw_analog/
  9. pw_android_toolchain/
  10. pw_arduino_build/
  11. pw_assert/
  12. pw_assert_basic/
  13. pw_assert_log/
  14. pw_assert_tokenized/
  15. pw_assert_zephyr/
  16. pw_async/
  17. pw_async_basic/
  18. pw_base64/
  19. pw_bloat/
  20. pw_blob_store/
  21. pw_bluetooth/
  22. pw_bluetooth_hci/
  23. pw_bluetooth_profiles/
  24. pw_boot/
  25. pw_boot_cortex_m/
  26. pw_build/
  27. pw_build_info/
  28. pw_build_mcuxpresso/
  29. pw_bytes/
  30. pw_checksum/
  31. pw_chre/
  32. pw_chrono/
  33. pw_chrono_embos/
  34. pw_chrono_freertos/
  35. pw_chrono_stl/
  36. pw_chrono_threadx/
  37. pw_chrono_zephyr/
  38. pw_cli/
  39. pw_compilation_testing/
  40. pw_console/
  41. pw_containers/
  42. pw_cpu_exception/
  43. pw_cpu_exception_cortex_m/
  44. pw_crypto/
  45. pw_digital_io/
  46. pw_digital_io_mcuxpresso/
  47. pw_docgen/
  48. pw_doctor/
  49. pw_env_setup/
  50. pw_file/
  51. pw_function/
  52. pw_fuzzer/
  53. pw_hdlc/
  54. pw_hex_dump/
  55. pw_i2c/
  56. pw_i2c_linux/
  57. pw_i2c_mcuxpresso/
  58. pw_ide/
  59. pw_interrupt/
  60. pw_interrupt_cortex_m/
  61. pw_interrupt_xtensa/
  62. pw_interrupt_zephyr/
  63. pw_intrusive_ptr/
  64. pw_kvs/
  65. pw_libc/
  66. pw_log/
  67. pw_log_android/
  68. pw_log_basic/
  69. pw_log_null/
  70. pw_log_rpc/
  71. pw_log_string/
  72. pw_log_tokenized/
  73. pw_log_zephyr/
  74. pw_malloc/
  75. pw_malloc_freelist/
  76. pw_metric/
  77. pw_minimal_cpp_stdlib/
  78. pw_module/
  79. pw_multisink/
  80. pw_package/
  81. pw_perf_test/
  82. pw_persistent_ram/
  83. pw_polyfill/
  84. pw_preprocessor/
  85. pw_presubmit/
  86. pw_protobuf/
  87. pw_protobuf_compiler/
  88. pw_random/
  89. pw_result/
  90. pw_ring_buffer/
  91. pw_router/
  92. pw_rpc/
  93. pw_rpc_transport/
  94. pw_rust/
  95. pw_snapshot/
  96. pw_software_update/
  97. pw_span/
  98. pw_spi/
  99. pw_spi_mcuxpresso/
  100. pw_status/
  101. pw_stm32cube_build/
  102. pw_stream/
  103. pw_stream_shmem_mcuxpresso/
  104. pw_stream_uart_linux/
  105. pw_stream_uart_mcuxpresso/
  106. pw_string/
  107. pw_symbolizer/
  108. pw_sync/
  109. pw_sync_baremetal/
  110. pw_sync_embos/
  111. pw_sync_freertos/
  112. pw_sync_stl/
  113. pw_sync_threadx/
  114. pw_sync_zephyr/
  115. pw_sys_io/
  116. pw_sys_io_ambiq_sdk/
  117. pw_sys_io_arduino/
  118. pw_sys_io_baremetal_lm3s6965evb/
  119. pw_sys_io_baremetal_stm32f429/
  120. pw_sys_io_emcraft_sf2/
  121. pw_sys_io_mcuxpresso/
  122. pw_sys_io_pico/
  123. pw_sys_io_stdio/
  124. pw_sys_io_stm32cube/
  125. pw_sys_io_zephyr/
  126. pw_system/
  127. pw_target_runner/
  128. pw_thread/
  129. pw_thread_embos/
  130. pw_thread_freertos/
  131. pw_thread_stl/
  132. pw_thread_threadx/
  133. pw_thread_zephyr/
  134. pw_tls_client/
  135. pw_tls_client_boringssl/
  136. pw_tls_client_mbedtls/
  137. pw_tokenizer/
  138. pw_tool/
  139. pw_toolchain/
  140. pw_toolchain_bazel/
  141. pw_trace/
  142. pw_trace_tokenized/
  143. pw_transfer/
  144. pw_unit_test/
  145. pw_unit_test_zephyr/
  146. pw_varint/
  147. pw_watch/
  148. pw_web/
  149. pw_work_queue/
  150. seed/
  151. targets/
  152. third_party/
  153. ts/
  154. zephyr/
  155. .bazelignore
  156. .bazelrc
  157. .black.toml
  158. .clang-format
  159. .clang-tidy
  160. .eslintrc.cjs
  161. .git-blame-ignore-revs
  162. .gitattributes
  163. .gitignore
  164. .gn
  165. .mypy.ini
  166. .prettierignore
  167. .prettierrc.cjs
  168. .pw_ide.yaml
  169. .pylintrc
  170. activate.bat
  171. Android.bp
  172. AUTHORS
  173. bootstrap.bat
  174. bootstrap.sh
  175. BUILD.bazel
  176. BUILD.gn
  177. BUILDCONFIG.gn
  178. CMakeLists.txt
  179. jest.config.ts
  180. Kconfig.zephyr
  181. LICENSE
  182. modules.gni
  183. OWNERS
  184. package-lock.json
  185. package.json
  186. pigweed.json
  187. PIGWEED_MODULES
  188. README.md
  189. rollup.config.js
  190. tsconfig.json
  191. WORKSPACE
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/.

Links