This function can be used to regulate the backlight intensity of the connected display, if this is supported by the display.
|intensity ||Designated backlight intensity.|
For GC01 this value is interpreted as millivolts and must be in the range [0..5000]. The graphics controller will put out the designated voltage on its BL_ADJ pin. Check your display's data sheet to determine how the backlight intensity will react on the voltage.
For GC04 this value specifies a percentage value [0..100].
- One of the following error codes is returned:
- Refer to the graphics controller's hardware manual for more details on backlight regulation.