1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
| /**
* @file PasswordKeypad.ino
*
* @brief Simple Password Entry Using Matrix Keypad
*
* @authors Nathan Sobieck (athan@Sobisource.com)
*
* @note
* 2012-05-04 - Nathan Sobieck : Simple Password Entry Using Matrix Keypad
*/
//* is to validate password
//# is to reset password attempt
/////////////////////////////////////////////////////////////////
#include <Password.h>
#include <Keypad.h>
Password password = Password( "1234" );
const byte ROWS = 4; ///< rows
const byte COLS = 4; ///< columns
// Define the Keymap
char keys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'} ///< * is to validate password
///< # is to reset password attempt
};
byte rowPins[ROWS] =
{9, 8, 7, 6}; ///< Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte colPins[COLS] =
{5, 4, 3, 2}; ///< Connect keypad COL0, COL1 and COL2 to these Arduino pins.
// Create the Keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup(){
Serial.begin(9600);
keypad.addEventListener(keypadEvent); ///< add an event listener for this keypad
}
void loop(){
keypad.getKey();
}
///take care of some special events
void keypadEvent(KeypadEvent eKey){
switch (keypad.getState()){
case PRESSED:
Serial.print("Pressed: ");
Serial.println(eKey);
switch (eKey){
case '*': checkPassword(); break;
case '#': password.reset(); break;
default: password.append(eKey);
}
}
}
void checkPassword(){
if (password.evaluate()){
Serial.println("Success");
//Add code to run if it works
}else{
Serial.println("Wrong");
//add code to run if it did not work
}
}
|