Google Git
Sign in
chromium / chromiumos / platform2 / libmems / b16c9ce7ca70e9c9e366ef43e292208633c22cf4
commitb16c9ce7ca70e9c9e366ef43e292208633c22cf4[log] [tgz]
authorGwendal Grignou <[email protected]>Fri Mar 28 04:01:05 2025
committerCopybara-Service <[email protected]>Fri Mar 28 19:12:28 2025
tree47c9d8a1ba175459aaf9f255c44f91df349864ab
parent1b3ce68eac58bb5993533f4502ca8a78ca974010 [diff]
libmems: Fix limit ODR

Fix initialization error that crash libmems in the iio_context
constructor.
Fix type.

BUG=b:353354908,b:406277521
TEST=Unit test, Check `cros-health-tool diag sensitive_sensor_v2` on
dewatt.

Fixes: 0f9d0fd0a74 ("libmems: limit ODR")
Change-Id: Id8e955a2bae0f6821bd08c9f48378e41aea3c30f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/6405837
Reviewed-by: Byron Lee <[email protected]>
Auto-Submit: Gwendal Grignou <[email protected]>
Reviewed-by: Harvey Yang <[email protected]>
Commit-Queue: ChromeOS Auto Retry <[email protected]>
Tested-by: Gwendal Grignou <[email protected]>
NOKEYCHECK=True
GitOrigin-RevId: fb4d891064a33f4ce97aeb9af2f170af0bd15ef5
2 files changed
tree: 47c9d8a1ba175459aaf9f255c44f91df349864ab
  1. BUILD.gn
  2. common_types.cc
  3. common_types.h
  4. DIR_METADATA
  5. export.h
  6. iio_channel.h
  7. iio_channel_impl.cc
  8. iio_channel_impl.h
  9. iio_context.h
  10. iio_context_factory.cc
  11. iio_context_factory.h
  12. iio_context_impl.cc
  13. iio_context_impl.h
  14. iio_device.cc
  15. iio_device.h
  16. iio_device_impl.cc
  17. iio_device_impl.h
  18. iio_device_test.cc
  19. iio_device_trigger_impl.cc
  20. iio_device_trigger_impl.h
  21. iio_event.cc
  22. iio_event.h
  23. iio_event_impl.cc
  24. iio_event_impl.h
  25. iio_event_impl_test.cc
  26. iio_event_test.cc
  27. OWNERS
  28. README.md
  29. test_fakes.cc
  30. test_fakes.h
README.md

Chrome OS IIO Sensor Utility Library

Project goal and motivation

This library provides a set of wrapper and test helpers around libiio.

It is meant to provide a common foundation for Chrome OS to access and interface IIO sensors, with:

  • a strong emphasis on testability;
  • readable code, with the ergonomics typical of platform2;
  • high performance.

Class hierarchy

At the root of the hierarchy, there exists the IioContext, which represents the IIO devices currently available on the system. These can be retrieved by name and inspected, via instances of IioDevice.

An IioDevice allows reading and writing attributes of an IIO device via type-safe helper APIs. It also offers support for configuring the buffer and trigger of an IIO device, which we use in order to allow the Chrome UI to read accelerometer data and support screen rotation.

An IioDevice also exposes a list of IioChannels, which can individually be enabled and disabled.

Test mocks

Useful mocks for the core classes are provided, such that a test author can focus on the logic of the unit tests and share a common testing language with other engineers working in this space. Sharing the foundation of testing IIO sensor access helps ensure that any improvement in this area can benefit all clients.