Use a wireless keyboard to control a mobile missile launcher

01 from evdev import InputDevice, categorize, ecodes
02 gamepad = InputDevice('/dev/input/event0')
03 for event in gamepad.read_loop():
04     if event.type == ecodes.EV_KEY and event.value == 1:
05         keyevent = categorize(event)
06         if keyevent.keycode == "KEY_UP":
07             print "DRIVE FORWARD"
08         if keyevent.keycode == "KEY_DOWN":
09             print "DRIVE STOP"
10         #print (keyevent) # uncomment to see key messages

01 ##########################################################################
02 # Copyright 2011 PaperCut Software Int. Pty. Ltd. http://www.papercut.com/
03 # Modifications: 2015 Leah, Brooke, and Pete Metcalfe
04 #
05 #   Licensed under the Apache License, Version 2.0 (the "License");
06 #   you may not use this file except in compliance with the License.
07 #   You may obtain a copy of the License at
08 #
09 #       http://www.apache.org/licenses/LICENSE-2.0
10 #
11 #   Unless required by applicable law or agreed to in writing, software
12 #   distributed under the License is distributed on an "AS IS" BASIS,
13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 #   See the License for the specific language governing permissions and
15 #   limitations under the License.
16 #
17 #  Author:  Chris Dance <chris.dance@papercut.com>
18 #  Version: 1.0 : 2011-08-15
19 ##########################################################################
20
21 import pifacedigitalio as p
22 import time
23 import usb
24 import sys
25 from evdev import InputDevice, categorize, ecodes
26
27 global device
28
29 down = 1
30 up = 2
31 left = 4
32 right = 8
33 fire = 16
34 stop = 32
35
36 # Define the missile launcher function
37 def launcher(action):
38   print 'in launcher routine'
39   print action
40   device.ctrl_transfer(0x21, 0x09, 0, 0, [0x02, action, 0x00,0x00,0x00,0x00,0x00,0x00])
41   if action <> 16:
42     time.sleep(0.10)
43     device.ctrl_transfer(0x21, 0x09, 0, 0, [0x02, stop, 0x00,0x00,0x00,0x00,0x00,0x00])
44   else:
45     time.sleep(2)
46
47 # Setup the Missile Launcher
48
49 device = usb.core.find(idVendor=0x2123, idProduct=0x1010)
50 try:
51   device.detach_kernel_driver(0)
52 except Exception, e:
53   pass # already unregistered
54
55 device.set_configuration()
56 endpoint = device[0][(0,0)][0]
57
58 p.init()
59
60 gamepad = InputDevice('/dev/input/event0')
61
62 for event in gamepad.read_loop():
63     if event.type == ecodes.EV_KEY and event.value == 1:
64         keyevent = categorize(event)
65         if keyevent.keycode == "KEY_KP8":
66             print "AIM UP"
67             launcher (up)
68         if keyevent.keycode == "KEY_KP2":
69             print "AIM DOWN"
70             launcher (down)
71         if keyevent.keycode == "KEY_KP4":
72             print "AIM LEFT"
73             launcher (left)
74         if keyevent.keycode == "KEY_KP6":
75             print "AIM RIGHT"
76             launcher (right)
77         if keyevent.keycode == "KEY_KP5":
78             print "FIRE"
79             launcher (fire)
80         if keyevent.keycode == "KEY_UP":
81             print "DRIVE FORWARD"
82             p.digital_write(7, 1)
83             p.digital_write(6, 1)
84         if keyevent.keycode == "KEY_DOWN":
85             print "DRIVE STOP"
86             p.digital_write(7, 0)
87             p.digital_write(6, 0)
88         if keyevent.keycode == "KEY_LEFT":
89             print "TURN LEFT"
90             p.digital_write(7, 0)
91             p.digital_write(6, 1)
92         if keyevent.keycode == "KEY_RIGHT":
93             print "TURN RIGHT"
94             p.digital_write(7, 1)
95             p.digital_write(6, 0)
96         print (keyevent)