accelerometers_lid_angle¶

Source code: accelerometers_lid_angle.py

This is a lid angle test based on accelerometers.

Description¶

There are two accelerometers in ChromeOS for lid angle calculation. This test asks OP to turn lid angle into a desired angle and then checks whether the lid angle is within some threshold. Please notice this test requires the hinge to be in a horizontal plane.

Test Procedure¶

Bend the device (base/lid) into a desired angle then press space.
Wait for completion.

Dependency¶

Device API (cros.factory.device.accelerometer).

Examples¶

Usage examples:

{
  "pytest_name": "accelerometers_lid_angle",
  "label": "Accelerometers Lid Angle",
  "run_if": "not constants.has_device_data or (device.component.has_lid_accelerometer and device.component.has_base_accelerometer)",
  "related_components": [
    "test_tags.TestCategory.ACCELEROMETER",
    "test_tags.TestCategory.VPD"
  ],
  "args": {
    "angle": 180,
    "tolerance": 5,
    "spec_offset": [
      0.5,
      0.5
    ]
  }
}

Test Arguments¶

Name	Type	Description
angle	int	(optional; default: `180`) The target lid angle in degree to test.
tolerance	int	(optional; default: `5`) The tolerance in degree.
capture_count	int	(optional; default: `20`) How many times to capture the raw data to calculate the lid angle.
spec_offset	list	Two numbers, ex: [0.5, 0.5] indicating the tolerance in m/s^2 for the digital output of sensors under 0 and 1G.
autostart	bool	(optional; default: `False`) Starts the test automatically without prompting.
sample_rate_hz	int	(optional; default: `200`) The sample rate in Hz to get raw data from accelerometers.