brightness.lcd_backlight¶

Source code: brightness/lcd_backlight.py

This is a factory test to check the functionality of LCD backlight module.

Description¶

This is another version of backlight.

The goal is to share code between led, lcd_backlight, keyboard_backlight, and so on. However, users still use the backlight test.

Test Procedure¶

Enumerate levels and set brightness to each level.
Operators decide pass or fail.

Dependency¶

Device API cros.factory.device.display.SetBacklightBrightness.

Examples¶

An example:

{
  "pytest_name": "brightness.lcd_backlight",
  "label": "Brightness LCD Backlight",
  "related_components": [
    "test_tags.TestCategory.LCD"
  ],
  "args": {
    "levels": [
      0.2,
      0.4,
      0.6,
      0.8,
      1.0
    ]
  }
}

Test Arguments¶

Name	Type	Description
msg	str, dict	(optional; default: `{'en-US': 'Please check if backlight brightness is changing from dark to bright.'}`) Message HTML
timeout_secs	int	(optional; default: `10`) Timeout value for the test in seconds.
levels	list, None	(optional; default: `None`) A sequence of brightness levels.
interval_secs	int, float	(optional; default: `0.5`) Time for each brightness level in seconds.