Backlight Control

CurtisWald — Wed, 18 May 2011 20:05:44 GMT

The Backlight brightness can be changed from user space using the /sys interface.

$ ls /sys/devices/platform/mxs-bl.0/backlight/mxs-bl

actual_brightness brightness max_brightness subsystem

bl_power device power uevent

To see what the maximum brightness is:

$ cat /sys/devices/platform/mxs-bl.0/backlight/mxs-bl/max_brightness

100

To change brightness

$ echo 100 > /sys/devices/platform/mxs-bl.0/backlight/mxs-bl/brightness

The default brightness is 50.

Re: Backlight Control

RobertMGirard — Wed, 18 May 2011 20:34:00 GMT

Curtis,

Thanks for this info.

I have been looking for a way to increase the backlight on the EVK

Regards

Robert