/*
||  Simple Password Entry Using Matrix Keypad
||  4/5/2012 Updates Nathan Sobieck: Nathan@Sobisource.com
||
*/


//* is to validate password
//# is to reset password attempt

/////////////////////////////////////////////////////////////////

#include <Password.h> //http://www.arduino.cc/playground/uploads/Code/Password.zip
#include <Keypad.h> //http://www.arduino.cc/playground/uploads/Code/Keypad.zip

Password password = Password( "1234" );
unsigned long buttonPushedMillis;  // when button was released
 unsigned long currentMillis;
unsigned long turnOnDelay = 2500; // wait to turn on LED


const byte ROWS = 4; // Four 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'}
};

byte rowPins[ROWS] = { A2,A3,A4,A5 };// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte colPins[COLS] = { 2,A0,A1, };// 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(){
  unsigned long currentMillis = millis();
  keypad.getKey();
}

//take care of some special events
void keypadEvent(KeypadEvent eKey){
  switch (keypad.getState()){
    case PRESSED:
    Serial.print("Pressed: ");
    Serial.println(eKey);
     buttonPushedMillis = currentMillis;
     if ((unsigned long)(currentMillis - buttonPushedMillis) >= turnOnDelay)
     {
      Serial.print("timeout");
     }
   else
   {
    switch (eKey){
      case '*': checkPassword(); break;
      case '#': password.reset(); break;
      default: password.append(eKey);
     }
  }
}
}
void checkPassword(){
  if (password.evaluate()){
    Serial.println("Success");
     password.reset();
    //Add code to run if it works
  }else{
    Serial.println("Wrong");
     password.reset();
    //add code to run if it did not work
  }
}