Keyboard Logout

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1/*
2
3  Keyboard logout
4
5  This sketch demonstrates the Keyboard library.
6
7  When you connect pin 2 to ground, it performs a logout.
8
9  It uses keyboard combinations to do this, as follows:
10
11  On Windows, CTRL-ALT-DEL followed by ALT-l
12
13  On Ubuntu, CTRL-ALT-DEL, and ENTER
14
15  On OSX, CMD-SHIFT-q
16
17  To wake: Spacebar.
18
19  Circuit:
20
21  - Arduino Leonardo or Micro
22
23  - wire to connect D2 to ground
24
25  created 6 Mar 2012
26
27  modified 27 Mar 2012
28
29  by Tom Igoe
30
31  This example is in the public domain.
32
33  https://www.arduino.cc/en/Tutorial/KeyboardLogout
34
35*/
36
37#define OSX 0
38#define WINDOWS 1
39#define UBUNTU 2
40
41#include "Keyboard.h"
42
43// change this to match your platform:
44int platform = OSX;
45
46void setup() {
47
48  // make pin 2 an input and turn on the pull-up resistor so it goes high unless
49
50  // connected to ground:
51
52  pinMode(2, INPUT_PULLUP);
53
54  Keyboard.begin();
55}
56
57void loop() {
58
59  while (digitalRead(2) == HIGH) {
60
61    // do nothing until pin 2 goes low
62
63    delay(500);
64
65  }
66
67  delay(1000);
68
69  switch (platform) {
70
71    case OSX:
72
73      Keyboard.press(KEY_LEFT_GUI);
74
75      // Shift-Q logs out:
76
77      Keyboard.press(KEY_LEFT_SHIFT);
78
79      Keyboard.press('Q');
80
81      delay(100);
82
83      Keyboard.releaseAll();
84
85      // enter:
86
87      Keyboard.write(KEY_RETURN);
88
89      break;
90
91    case WINDOWS:
92
93      // CTRL-ALT-DEL:
94
95      Keyboard.press(KEY_LEFT_CTRL);
96
97      Keyboard.press(KEY_LEFT_ALT);
98
99      Keyboard.press(KEY_DELETE);
100
101      delay(100);
102
103      Keyboard.releaseAll();
104
105      // ALT-l:
106
107      delay(2000);
108
109      Keyboard.press(KEY_LEFT_ALT);
110
111      Keyboard.press('l');
112
113      Keyboard.releaseAll();
114
115      break;
116
117    case UBUNTU:
118
119      // CTRL-ALT-DEL:
120
121      Keyboard.press(KEY_LEFT_CTRL);
122
123      Keyboard.press(KEY_LEFT_ALT);
124
125      Keyboard.press(KEY_DELETE);
126
127      delay(1000);
128
129      Keyboard.releaseAll();
130
131      // Enter to confirm logout:
132
133      Keyboard.write(KEY_RETURN);
134
135      break;
136
137  }
138
139  // do nothing:
140
141  while (true);
142}