#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>
#include <Servo.h>
//*****************************************
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
#define REST 0
//////////////
const int buzzer = 10;
const int songspeed = 2;
int tempo = 114;
// notes of the moledy followed by the duration.
// a 4 means a quarter note, 8 an eighteenth , 16 sixteenth, so on
// !!negative numbers are used to represent dotted notes,
// so -4 means a dotted quarter note, that is, a quarter plus an eighteenth!!
int melody[] = {
// Never Gonna Give You Up - Rick Astley
// Score available at https://musescore.com/chlorondria_5/never-gonna-give-you-up_alto-sax
// Arranged by Chlorondria
NOTE_D5,2, NOTE_E5,8, NOTE_FS5,8, NOTE_D5,8, //13
NOTE_E5,8, NOTE_E5,8, NOTE_E5,8, NOTE_FS5,8, NOTE_E5,4, NOTE_A4,4,
REST,2, NOTE_B4,8, NOTE_CS5,8, NOTE_D5,8, NOTE_B4,8,
REST,8, NOTE_E5,8, NOTE_FS5,8, NOTE_E5,-4, NOTE_A4,16, NOTE_B4,16, NOTE_D5,16, NOTE_B4,16,
NOTE_FS5,-8, NOTE_FS5,-8, NOTE_E5,-4, NOTE_A4,16, NOTE_B4,16, NOTE_D5,16, NOTE_B4,16,
};
int second_melody[] = {
NOTE_A4,4, NOTE_F4,-8, NOTE_C5,16, NOTE_A4,2,//4
NOTE_E5,4, NOTE_E5,4, NOTE_E5,4, NOTE_F5,-8, NOTE_C5,16,
NOTE_A4,4, NOTE_F4,-8, NOTE_C5,16, NOTE_A4,2,
NOTE_A5,4, NOTE_A4,-8, NOTE_A4,16, NOTE_A5,4, NOTE_GS5,-8, NOTE_G5,16, //7
NOTE_DS5,16, NOTE_D5,16, NOTE_DS5,8, REST,8, NOTE_A4,8, NOTE_DS5,4, NOTE_D5,-8, NOTE_CS5,16,
NOTE_C5,16, NOTE_B4,16, NOTE_C5,16, REST,8, NOTE_F4,8, NOTE_GS4,4, NOTE_F4,-8, NOTE_A4,-16,//9
NOTE_C5,4, NOTE_A4,-8, NOTE_C5,16, NOTE_E5,2,
};
// sizeof gives the number of bytes, each int value is composed of two bytes (16 bits)
// there are two values per note (pitch and duration), so for each note there are four bytes
int notes = sizeof(melody) / sizeof(melody[0]) / 2;
// this calculates the duration of a whole note in ms
int wholenote = (60000 * 4) / tempo;
int divider = 0, noteDuration = 0;
//*****************************************
Servo myservo;
LiquidCrystal_I2C lcd(0x27, 20, 4);
int pos = 0;
int ledgreen = 13;
int ledred = 12;
byte data_count = 0, master_count = 0;
bool Pass_is_good;
char customKey;
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
bool door = true;
char keypressed; //Where the keys are stored it changes very often
char code[]= {'0','0','0','0'}; //The default code, you can change it or make it a 'n' digits one
char code_buff1[sizeof(code)]; //Where the new key is stored
char code_buff2[sizeof(code)]; //Where the new key is stored again so it's compared to the previous one
short a=0,i=0,s=0,j=0; //Variables used later
char colPins[COLS] = { 5, 4, 3, 2 };
char rowPins[ROWS] = { 9, 8, 7, 6 };
Keypad customKeypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);
void setup()
{
myservo.attach( A0);
ServoClose();
lcd.begin(20, 4);
lcd.setCursor(2, 0);
lcd.print(" PUL CAGUD ");
lcd.setCursor(0, 1);
lcd.print("--LOCK SYSTEM--");
lcd.setCursor(0, 2);
lcd.print(" * to enter code");
lcd.setCursor(0, 3);
lcd.print(" # to change code");
pinMode(ledgreen, OUTPUT);
pinMode(ledred, OUTPUT);
}
void loop()
{
keypressed = customKeypad.getKey(); //Constantly waiting for a key to be pressed
if(keypressed == '*'){ // * to open the lock
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Enter code"); //Message to show
GetCode(); //Getting code function
if(a==sizeof(code)) //The GetCode function assign a value to a (it's correct when it has the size of the code array)
OpenDoor(); //Open lock function if code is correct
else{
lcd.clear();
lcd.setCursor(1, 1);
lcd.print("Pincode Incorrect"); //Message to print when the code is wrong
lcd.setCursor(1, 2);
lcd.print("Access Not Granted!");
digitalWrite(ledred,HIGH);
for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) {
// calculates the duration of each note
divider = second_melody[thisNote + 1];
if (divider > 0) {
// regular note, just proceed
noteDuration = (wholenote) / divider;
} else if (divider < 0) {
// dotted notes are represented with negative durations!!
noteDuration = (wholenote) / abs(divider);
noteDuration *= 1.5; // increases the duration in half for dotted notes
}
// we only play the note for 90% of the duration, leaving 10% as a pause
tone(buzzer, second_melody[thisNote], noteDuration*0.9);
// Wait for the specief duration before playing the next note.
delay(noteDuration);
// stop the waveform generation before the next note.
noTone(buzzer);
}
}
delay(2000);
digitalWrite(ledred,LOW);
lcd.clear();
lcd.print(" PUL CAGUD ");
lcd.setCursor(0, 1);
lcd.print("--LOCK SYSTEM--");
lcd.setCursor(0, 2);
lcd.print(" * to enter code");
lcd.setCursor(0, 3);
lcd.print(" # to change code");
}
if(keypressed == '#'){ //To change the code it calls the changecode function
ChangeCode();
lcd.clear();
lcd.print(" PUL CAGUD ");
lcd.setCursor(0, 1);
lcd.print("--LOCK SYSTEM--");
lcd.setCursor(0, 2);
lcd.print(" * to enter code");
lcd.setCursor(0, 3);
lcd.print(" # to change code");
}
}
void GetCode(){ //Getting code sequence
i=0; //All variables set to 0
a=0;
j=0;
while(keypressed != 'A'){ //The user press A to confirm the code otherwise he can keep typing
keypressed = customKeypad.getKey();
if(keypressed != NO_KEY && keypressed != 'A' ){ //If the char typed isn't A and neither "nothing"
lcd.setCursor(j,1); //This to write "*" on the LCD whenever a key is pressed it's position is controlled by j
lcd.print("*");
j++;
if(keypressed == code[i]&& i<sizeof(code)){ //if the char typed is correct a and i increments to verify the next caracter
a++; //Now I think maybe I should have use only a or i ... too lazy to test it -_-'
i++;
}
else
a--; //if the character typed is wrong a decrements and cannot equal the size of code []
}
}
keypressed = NO_KEY;
}
void ChangeCode(){ //Change code sequence
lcd.clear();
lcd.print("Changing code");
delay(1000);
lcd.clear();
lcd.print("Enter old code");
GetCode(); //verify the old code first so you can change it
if(a==sizeof(code)){ //again verifying the a value
lcd.clear();
lcd.print("Changing code");
GetNewCode1(); //Get the new code
GetNewCode2(); //Get the new code again to confirm it
s=0;
for(i=0 ; i<sizeof(code) ; i++){ //Compare codes in array 1 and array 2 from two previous functions
if(code_buff1[i]==code_buff2[i])
s++; //again this how we verifiy, increment s whenever codes are matching
}
if(s==sizeof(code)){ //Correct is always the size of the array
for(i=0 ; i<sizeof(code) ; i++){
code[i]=code_buff2[i]; //the code array now receives the new code
EEPROM.put(i, code[i]); //And stores it in the EEPROM
}
lcd.clear();
lcd.print("Code Changed");
delay(2000);
}
else{ //In case the new codes aren't matching
lcd.clear();
lcd.print("Codes are not");
lcd.setCursor(0,1);
lcd.print("matching !!");
delay(2000);
}
}
else{ //In case the old code is wrong you can't change it
lcd.clear();
lcd.print("Wrong");
delay(2000);
}
}
void GetNewCode1(){
i=0;
j=0;
lcd.clear();
lcd.print("Enter new code"); //tell the user to enter the new code and press A
lcd.setCursor(0,1);
lcd.print("and press A");
delay(2000);
lcd.clear();
lcd.setCursor(0,1);
lcd.print("and press A"); //Press A keep showing while the top row print ***
while(keypressed != 'A'){ //A to confirm and quits the loop
keypressed = customKeypad.getKey();
if(keypressed != NO_KEY && keypressed != 'A' ){
lcd.setCursor(j,0);
lcd.print("*"); //On the new code you can show * as I did or change it to keypressed to show the keys
code_buff1[i]=keypressed; //Store caracters in the array
i++;
j++;
}
}
keypressed = NO_KEY;
}
void GetNewCode2(){ //This is exactly like the GetNewCode1 function but this time the code is stored in another array
i=0;
j=0;
lcd.clear();
lcd.print("Confirm code");
lcd.setCursor(0,1);
lcd.print("and press A");
delay(3000);
lcd.clear();
lcd.setCursor(0,1);
lcd.print("and press A");
while(keypressed != 'A'){
keypressed = customKeypad.getKey();
if(keypressed != NO_KEY && keypressed != 'A' ){
lcd.setCursor(j,0);
lcd.print("*");
code_buff2[i]=keypressed;
i++;
j++;
}
}
keypressed = NO_KEY;
}
void ServoOpen()
{
for (pos = 180; pos >= 0; pos -= 5) {
myservo.write(pos);
delay(15);
}
}
void ServoClose()
{
for (pos = 0; pos <= 180; pos += 5) {
myservo.write(pos);
delay(15);
}
}
void OpenDoor()
{
lcd.clear();
ServoOpen();
lcd.setCursor(1, 1);
lcd.print(" Pincode correct");
lcd.setCursor(1, 2);
lcd.print(" Access Granted!");
digitalWrite(ledgreen,HIGH);
for (int thisNote = 0; thisNote < notes * 2; thisNote = thisNote + 2) {
// calculates the duration of each note
divider = melody[thisNote + 1];
if (divider > 0) {
// regular note, just proceed
noteDuration = (wholenote) / divider;
} else if (divider < 0) {
// dotted notes are represented with negative durations!!
noteDuration = (wholenote) / abs(divider);
noteDuration *= 1.5; // increases the duration in half for dotted notes
}
// we only play the note for 90% of the duration, leaving 10% as a pause
tone(buzzer, melody[thisNote], noteDuration * 0.9);
// Wait for the specief duration before playing the next note.
delay(noteDuration);
// stop the waveform generation before the next note.
noTone(buzzer);
}
digitalWrite(ledgreen,LOW);
ServoClose();
}