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Manual Pages  — ULED

NAME

uled – USB LED driver

CONTENTS

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 Dream Cheeky WebMail Notifier and ThingM blink(1) notification LED.

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 <Mt kevlo@FreeBSD.org>.
ULED (4) March 31, 2017
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