zigbee-password-checker/sender at master · pvskand/zigbee-password-checker · GitHub

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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/********SENDER'S END'**********/

// We'll use SoftwareSerial to communicate with the XBee:
#include <SoftwareSerial.h>

SoftwareSerial XBee(2, 3); // RX, TX
#include <Keypad.h> // Library for the Keypad

int passwordLength = 4;
char keys[4][4] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'#','0','*','D'}
};
byte rowPins[4] = {6, 7, 8, 9};
byte colPins[4] = {10, 11,12,13};

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, 4, 4 );


void setup()
{
  XBee.begin(9600);
  Serial.begin(9600);
}

/* A function in update password to send the current password to the coordinator node*/

void checkPassword()
{
  int i;
  char input[passwordLength];
  for(i=0;i<passwordLength;)
  {
    char store = keypad.getKey();
    if(store != NO_KEY)
    {
      input[i]=store;
      Serial.print("*");
      i++;
    }
  }

  int pass[passwordLength];

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=input[i]-48;
  }

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=9-pass[i];
  }
  if(i==passwordLength)
  {
  Serial.println();
  }

  for(i=0;i<passwordLength;i++)
  {
    XBee.write(pass[i]+48);
  }
}

/*A function that send the updated password to the coordinator so the coordinator can update the password*/
void updatePassword()
{
  int i;
  char input[passwordLength];
  for(i=0;i<passwordLength;)
  {
    char store = keypad.getKey();
    if(store != NO_KEY)
    {
      input[i]=store;
      Serial.print("*");
      i++;
    }
  }

  int pass[passwordLength];

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=input[i]-48;
  }

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=9-pass[i];
  }
  if(i==passwordLength)
  {
    Serial.println();
  }

  for(i=0;i<passwordLength;i++)
  {
    XBee.write(pass[i]+48);
  }
}


void loop()
{
  int i;
  char input[passwordLength];
  for(i=0;i<passwordLength;)
  {
    char store = keypad.getKey(); // get the element typed on the keypad
    if(store != NO_KEY)
    {
      input[i]=store;
      Serial.print("*");
      i++;
    }
  }

  int pass[passwordLength];

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=input[i]-48;
  }

  for(i=0;i<passwordLength;i++)
  {
    pass[i]=9-pass[i];
  }
  if(i==passwordLength)
  {
    Serial.println();
  }

  for(i=0;i<passwordLength;i++)
  {
    XBee.write(pass[i]+48);
  }

  {
    delay(100);
    char ss = XBee.read();
    if(ss == 'Y') // correct password entered! Door lock opens!
    {
      Serial.println("Password correct !");
    }
    else if(ss == 'C')  // update password
    {
      delay(100);
      Serial.println("Enter Current Password!");
      checkPassword();
      delay(100);
      char u = XBee.read();
      if(u == 'D')  // correct current password has been entered.
      {
        Serial.println("Enter the new Password!");
        updatePassword();
        delay(100);
        char p = XBee.read();
        if(p == 'U')
        {
          Serial.println("Updated Password!");
        }
      }
      else  // wrong password!
        Serial.println("Wrong password. Try Again!");
    }
    else
    {
      Serial.println("Wrong password. Try Again !");
    }
  }

}