Event types

Each input event consists of 3 parts: A type, a code, and a value.
There are several types of events. You can either use a numerical representation, or its name.
The following types are currently recognized by name:

type	code	value	notes
EV_SYN	0	0	Synchronize events
EV_KEY	Keycode	0 = pressed, 1 = released	A key was pressed or released on a keyboard device, or a button on a mouse
EV_REL	axis	amount	A relative motion event along an exis by a certain amount
EV_ABS	axis	amount	An absolute motion event to a point along an axis
EV_MSC	unknown	unknown	A miscellanous device event.
EV_SW	switch	value	Switch events like shutting a lid, plugging in headphones…
EV_LED	led-id	on/off	An LED was activated/deactivated
EV_SND	type	unk	A “sound” event (click = 0, bell = 1, tone = 2)

(And: EV_REP, EV_PWR, EV_FF_STATUS)

You can print the generated device events in human readable form using Showevents Mode