[roll third_party/pigweed] pw_ring_buffer: Varint encode preamble byte

Preamble bytes act as field keys to permit ring buffers to be
proto-compliant after a dering operation. Allow passing in field keys
larger than a single byte and varint-encode them before writing.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/35340

third_party/pigweed Rolled-Commits: b134342d881dd0b..44202c9cabc143f
CQ-Do-Not-Cancel-Tryjobs: true
Roller-URL: https://ci.chromium.org/b/8853580602253124256
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8853580602253124256
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I0a2219f0f2ac40b6ef24992f91aa4b3b3430c0d2
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/35780
Reviewed-by: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
1 file changed
tree: 612c5b2a9a838fad185938bec0a03db18bc2ef90
  1. applications/
  2. build_overrides/
  3. pw_board_led/
  4. pw_board_led_arduino/
  5. pw_board_led_host/
  6. pw_board_led_stm32f429i_disc1/
  7. pw_console/
  8. pw_spin_delay/
  9. pw_spin_delay_arduino/
  10. pw_spin_delay_host/
  11. pw_spin_delay_stm32f429i_disc1/
  12. targets/
  13. third_party/
  14. tools/
  15. .gitattributes
  16. .gitignore
  17. .gitmodules
  18. .gn
  19. activate.bat
  20. banner.txt
  21. bootstrap.bat
  22. bootstrap.sh
  23. BUILD.gn
  24. BUILDCONFIG.gn
  25. navbar.md
  26. PW_PLUGINS
  27. README.md
README.md

Pigweed Experimental

This repository contains experimental pigweed modules.

Repository setup

Clone this repo with --recursive to get all required submodules.

git clone --recursive https://pigweed.googlesource.com/pigweed/experimental

This will pull the Pigweed source repository into third_party/pigweed. If you already cloned but forgot to --recursive run git submodule update --init to pull all submodules.