freebsd man page for uled

ULED(4) 						   BSD Kernel Interfaces Manual 						   ULED(4)

NAME
     uled -- USB LED driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines into your kernel configuration file:

	   device uled
	   device usb

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   uled_load="YES"

DESCRIPTION
     The uled driver provides support for the Dream Cheeky WebMail Notifier device.

     Subsequently, the /dev/uled0 device can be used by userland applications.

IOCTLS
     The following ioctl(2) commands can be performed on /dev/uled0, which are defined in <dev/usb/uled_ioctl.h>:

     ULED_GET_COLOR
	     The command returns LED colors with values for RGB.  This ioctl(2) takes the following structure:

	     struct uled_color {
		     uint8_t red;
		     uint8_t green;
		     uint8_t blue;
	     };

     ULED_SET_COLOR
	     The command sets LED colors with values for RGB.  It uses the same structure as above.

FILES
     /dev/uled0  blocking device node

SEE ALSO
     ohci(4), uhci(4), usb(4)

AUTHORS
     The uled driver was written by Kevin Lo <kevlo@FreeBSD.org>.

BSD
								 September 5, 2014							       BSD