Thought I would share: Ruby script to control USB dart launchers

Question

Been hacking away at this for a bit and I'm calling this good for now   This script controls USB dart launchers like this guy:
0a81:0701 Chesen Electronics Corp. USB Missile Launcher
At the moment, it's coded to only control the above, but add your idVendor, idProduct, and movement codes to the ActionData hash and it should pick right up and work.
Requires the libusb and curses gems.  Codepad: http://codepad.org/v9h3ziYw
Enjoy!
#!/usr/bin/env ruby
Version = '0.1'
abort("Usage: #{__FILE__} idVendor:idProduct") if ARGV.empty?
require 'curses'
require 'libusb'
# Add your own idVendor, idProduct, and movement codes here!
ActionData = {
:idVendor => 0x0a81,
:idProduct => 0x0701
} => {
:up => 0x02,
:down => 0x01,
:left => 0x04,
:right => 0x08,
:fire => 0x10,
:stop => 0x20,
class RocketLauncher
attr_accessor :device
def move(symbol)
@usb.control_transfer(
:bmRequestType => 0x21,
:bRequest => 0x09,
:wValue => 0x0000,
:wIndex => 0x0000,
:dataOut => ActionData[{
:idVendor => device[:idVendor],
:idProduct => device[:idProduct]
}][symbol].chr
end
def start
begin
@usb = LIBUSB::Context.new.devices(
:idVendor => device[:idVendor],
:idProduct => device[:idProduct]
).first.open.claim_interface(0)
rescue LIBUSB::ERROR_ACCESS
abort("No permission to access USB device!")
rescue LIBUSB::ERROR_BUSY
abort("The USB device is busy!")
rescue NoMethodError
abort("Could not find USB device!")
end
Curses.noecho
Curses.init_screen
Curses.stdscr.keypad(true)
Curses.timeout = 150
Curses.addstr("USB Rocket Launcher Controller v#{Version} by Maxwell Pray")
loop do
Curses.setpos(2,0)
case Curses.getch
when Curses::Key::UP, 'w', 'W'
Curses.addstr("Movement: Up!")
self.move(:up)
when Curses::Key::DOWN, 's', 'S'
Curses.addstr("Movement: Down!")
self.move(:down)
when Curses::Key::LEFT, 'a', 'A'
Curses.addstr("Movement: Left!")
self.move(:left)
when Curses::Key::RIGHT, 'd', 'D'
Curses.addstr("Movement: Right!")
self.move(:right)
when Curses::Key::ENTER, 10, ' '
Curses.addstr("Movement: Fire!")
self.move(:fire)
when 27, 'q', 'Q'
exit
else
Curses.addstr("Waiting for key...")
self.move(:stop)
end
Curses.clrtoeol
end
end
end
launcher = RocketLauncher.new
device = ARGV[0].split(':').map { |id| id.to_i(base=16) }
launcher.device = {
:idVendor => device[0],
:idProduct => device[1]
launcher.start

Answer 1

problem fixed with method
detach_kernel_driver
thx ^^
but now there is no FIRE action with enter Action is active, but:
:fire  => 0x10
does nothing.
Where i can find any info about this? Maybe it must be another for my device?