class PWMBacklight – PWM Backlight

The PWMBacklight class is used to control a screen backlight.

Constructors

display.PWMBacklight

class display.PWMBacklight(pin, timer=3, channel=3, frequency=200)

Creates a backlight object to initialize the display backlight. This class should be passed as the backlight argument to any display object constructor which can use a backlight controller.

pin specifies the Pin to use.

timer specifies the Timer number to use.

channel specifies the Timer channel to use.

frequency specifies the PWM frequency.

Methods

PWMBacklight.deinit

PWMBacklight.deinit() -> None

Deinitializes the backlight controller.

PWMBacklight.backlight

PWMBacklight.backlight(value: int | None = None) -> int

Sets the backlight strength from 0-100. Note that a linear pwm duty cycle on the backlight output will not necessary result in a linear brightness change on the screen. Typically there’s a small region where the screen brightness will change drastically.