-- Who needs upower and xbacklight anyways?
local syscontrol = require("syscontrol")
local devices = syscontrol.power_supply.enumerate()
for k,v in pairs(devices) do
    local data = syscontrol.power_supply.read_attribs(v)
    print("Device: ")
    for kk,vv in pairs(data) do
        print(kk,vv)
    end
end
local backlight_devices = syscontrol.backlight.enumerate()
for k,v in pairs(backlight_devices) do
    local data = syscontrol.backlight.read_attribs(v)
    print("Backlight device: ")
    for kk,vv in pairs(data) do
        print(kk,vv)
    end
    if data.writable then
        syscontrol.backlight.set_brightness(data,data.max_brightness)
    end
end