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opensecura / 3p / google / pigweed / 050eae89d2e6922b049f6c1217557877871dd19f
commit050eae89d2e6922b049f6c1217557877871dd19f[log] [tgz]
authorArmando Montanez <amontanez@google.com>Tue Dec 10 14:23:36 2019 -0800
committerCQ Bot Account <commit-bot@chromium.org>Fri Dec 13 00:33:46 2019 +0000
tree23600ee81cf25dbf532a6bbb5cafe660db1f2656
parent686c2d83e1873ecd71d129dcdcca169a06cda80f [diff]
stm32f429i-disc1: Enable hardware FPU

 * Add Cortex-M4 toolchains with floating point hardware instructions.
 * Update stm32f429i-disc1 to use hardware fpu toolchain by default.
 * Add code to enable FPU in pw_dumb_io.

Verified tests that use floating point operations continue to pass.

Change-Id: I76bc7eeaf457eca1abacbc60992648d63dc85bf2
4 files changed
tree: 23600ee81cf25dbf532a6bbb5cafe660db1f2656
  1. docs/
  2. env_setup/
  3. pw_bloat/
  4. pw_build/
  5. pw_cli/
  6. pw_docgen/
  7. pw_dumb_io/
  8. pw_dumb_io_baremetal_stm32f429/
  9. pw_dumb_io_stdio/
  10. pw_module/
  11. pw_preprocessor/
  12. pw_presubmit/
  13. pw_span/
  14. pw_status/
  15. pw_string/
  16. pw_test_server/
  17. pw_toolchain/
  18. pw_unit_test/
  19. pw_varint/
  20. targets/
  21. .clang-format
  22. .gitignore
  23. .gn
  24. .pylintrc
  25. AUTHORS
  26. BUILD
  27. BUILD.gn
  28. BUILDCONFIG.gn
  29. CONTRIBUTING.md
  30. LICENSE
  31. modules.gni
  32. pw_vars_default.gni
  33. README.md
  34. WORKSPACE
README.md

Pigweed Embedded Oriented Software Libraries

Pigweed is a collection of embedded-focused libraries, which we call “modules”. These modules are designed for small-footprint MMU-less microcontrollers like the ST Micro STM32L452 or the Nordic NRF82832. The modules are designed to facilitate easy integration into existing codebases.

Pigweed is in the early stages of development.

Getting Started

$ git clone sso://pigweed.googlesource.com/pigweed/pigweed ~/pigweed
$ cd ~/pigweed
$ env_setup/cipd/cipd.py auth-login  # Once per machine.
$ . env_setup/setup.sh

If you‘re using Homebrew and you get an error saying module 'http.client' has no attribute 'HTTPSConnection' then your Homebrew Python was not set up to support SSL. Ensure it’s installed with brew install openssl and then run brew uninstall python && brew install python. After that things should work.

The environment setup script will pull down the versions of tools necessary to build Pigweed and add them to your environment. You can then build with either GN or Bazel. You can also confirm you're getting the right versions of tools—they should be installed under env_setup/.

$ which gn
~/pigweed/env_setup/cipd/tools/gn
$ gn gen out/host
$ ninja -C out/host

$ which bazel
~/pigweed/env_setup/cipd/tools/bazel
$ bazel test //...

And do the following to test on the STM32F429 Discovery board. (The bazel build does not yet support building for hardware.)

$ gn gen --args='pw_target_config = "//targets/stm32f429i-disc1/target_config.gni"' out/disco
$ ninja -C out/disco
$ pw test --root out/disco/ --runner stm32f429i_disc1_unit_test_runner -- --port /dev/ttyACM0

If any of this doesn't work please file a bug.