-
Notifications
You must be signed in to change notification settings - Fork 0
/
changePassward.c
224 lines (175 loc) · 4.71 KB
/
changePassward.c
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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
#include "changePassward.h"
#include "changePassward_Private.h"
static u8 firstUse = 0;
static u8 passward[20] = {NULL};
static u8 passwardSize = sizeof (passward)/sizeof (passward[0]);
static u16 addressAddress = 0;
static u16 counterAddress = 2;
static u16 eepromWriteCounter = 0;
static u16 dataAddress;
static u16 passwardAddress = 3;
static u8* dataAddressPointer = &dataAddress;
static u8 key = NULL;
static u8 state = CHANGE_PASSWARD_WAIT;
static u8 retrievalDone = 0;
extern void changePassward_Init (u8 newPassward[], u8 newPasswardSize)
{
if (newPassward != NULL)
{
//DIO_Init();
//LCD_Init();
if (firstUse == 0)
{
addressAddress = 0;
dataAddress = 2;
counterAddress = dataAddress;
eepromWriteCounter = 0;
passwardAddress = 3;
EEPROM_write (passwardAddress, '0');
EEPROM_write (passwardAddress + 1, '0');
EEPROM_write (passwardAddress + 2, '0');
EEPROM_write (passwardAddress + 3, '0');
EEPROM_write (passwardAddress + 4, NULL);
firstUse = 1;
}
*(dataAddressPointer + 0) = EEPROM_read(addressAddress);
*(dataAddressPointer + 1) = EEPROM_read(addressAddress + 1);
if ( dataAddress > 1023 - passwardSize - 1)
{
dataAddress = 2;
EEPROM_write(addressAddress, *(dataAddressPointer + 0));
EEPROM_write(addressAddress - 1, *(dataAddressPointer + 1) );
}
counterAddress = dataAddress;
eepromWriteCounter = EEPROM_read(counterAddress);
if (eepromWriteCounter >= 3)
{
EEPROM_write (counterAddress, 0);
eepromWriteCounter = 0;
}
passwardAddress = dataAddress + 1;
EEPROM_passwardRetrieval ( newPassward, newPasswardSize, passwardAddress);
}
}
extern u8 changePassward_Run (u8 newpassward[], u8 newpasswardSize)
{
EEPROM_KeyPad_getPassward ( passward, passwardSize, passwardAddress);
if (state == CHANGE_PASSWARD_DONE && retrievalDone == 1)
{
EEPROM_passwardRetrieval ( newpassward, newpasswardSize, passwardAddress);
retrievalDone = 0;
}
if (eepromWriteCounter == 3)
{
dataAddress = dataAddress + passwardSize + 1;
if ( (dataAddress > 1023 - passwardSize - 1) || (dataAddress < 2) )
{
dataAddress = 2;
}
EEPROM_write(addressAddress, *(dataAddressPointer + 0));
EEPROM_write(addressAddress + 1, *(dataAddressPointer + 1) );
counterAddress = dataAddress;
EEPROM_write(counterAddress, 0);
eepromWriteCounter = 0;
u8 index;
u8 eeprom_passwardReadChar = EEPROM_read(passwardAddress + 0);
for (index = 0; eeprom_passwardReadChar; )
{
EEPROM_write(dataAddress + 1 + index, eeprom_passwardReadChar);
index++;
eeprom_passwardReadChar = EEPROM_read(passwardAddress + index);
}
EEPROM_write(dataAddress + 1 + index, NULL);
passwardAddress = dataAddress + 1;
}
LCD_GoTo(0, 0);
LCD_WriteNumber (dataAddress);
LCD_GoTo(1, 0);
LCD_WriteNumber_4Digit(addressAddress);
LCD_GoTo(0, 6);
LCD_WriteNumber_4Digit(eepromWriteCounter);
LCD_GoTo(1, 6);
LCD_WriteNumber_4Digit(counterAddress);
LCD_GoTo(0, 11);
if (state == CHANGE_PASSWARD_DONE)
{
LCD_WriteString(newpassward);
}
else if (state == CHANGE_PASSWARD_WAIT)
{
LCD_WriteString(passward);
}
LCD_WriteString(" ");
LCD_GoTo(1, 11);
LCD_WriteNumber_4Digit(passwardAddress);
return state;
}
static void EEPROM_passwardRetrieval (u8 passward[], u16 passwardSize, u16 address)
{
if (passwardSize > 0)
{
passward[0] = EEPROM_read(address);
u16 index;
for (index = 1; index < (passwardSize - 1) && passward[index - 1] != NULL; index++)
{
passward[index] = EEPROM_read(address + index);
}
passward[index] = NULL;
}
}
static int EEPROM_KeyPad_trigger ()
{
static u8 lastKey = NULL;
lastKey = key;
key = KEYPAD_GetKey ();
if (lastKey != key)
{
return 1;
}
return 0;
}
static void EEPROM_KeyPad_passwardSave (u8 passward[], u16 passwardSize, u16 address)
{
u8 index;
for (index = 0; passward[index]; index++)
{
EEPROM_write (address + index, passward[index]);
}
EEPROM_write (address + index, NULL);
EEPROM_write (counterAddress, ++eepromWriteCounter);
passward[0] = NULL;
}
static void EEPROM_KeyPad_getPassward (u8 passward[], u16 passwardSize, u16 address)
{
static u16 index = 0;
if (passward != NULL && index < passwardSize-1)
{
state = CHANGE_PASSWARD_WAIT;
if (EEPROM_KeyPad_trigger ())
{
if (key != NULL)
{
if (key != '=' && key != 'C')
{
passward[index] = key;
index++;
passward[index] = NULL;
state = CHANGE_PASSWARD_WAIT;
}
else if (key == '=')
{
EEPROM_KeyPad_passwardSave (passward, passwardSize, address);
index = 0;
retrievalDone = 1;
state = CHANGE_PASSWARD_DONE;
}
else if (key == 'C')
{
index = 0;
passward[0] = NULL;
state = CHANGE_PASSWARD_DONE;
}
}
}
}
}