local evdev = require "evdev"

local dev = evdev.Device("/dev/input/event0")

local x = 0
local y = 0

while true do
	local timestamp, eventType, eventCode, value = dev:read()
	if eventType == evdev.EV_ABS then
		if eventCode == 57 then
			if value < 0 then
				print("Up:   ",x,y)
			end
		elseif eventCode == 0 then
			y = value
		elseif eventCode == 1 then
			x = value
		end
	end
end