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//Arduino 
 
 
// PIN switch with 16-digit numeric keypad
// <a href="http://tronixstuff.com/tutorials" target="_blank">http://tronixstuff.com/tutorials</a> > chapter 42
 
#include "Keypad.h"
//#include <Wire.h>
//#include <TWILiquidCrystal.h>
//LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
 
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keys[ROWS][COLS] =
{
  {
    '1','2','3','A'  }
  ,
  {
    '4','5','6','B'  }
  ,
  {
    '7','8','9','C'  }
  ,
  {
    '*','0','#','D'  }
};
byte rowPins[ROWS] = {
  2, 3, 4, 5}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {
  6, 7, 8, 9}; //connect to the column pinouts of the keypad
 
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
 
char PIN[6]={
  '0','0','0','0','0','0'}; //initialisation du code
char attempt[6]={ 
  '0','0','0','0','0','0'}; // used for comparison
int z=0;
int x=0;
 
void setup()
{
  pinMode(11,OUTPUT);
  Serial.begin(9600);
//  lcd.begin(16, 2);
 Serial.println("ENTRER CODE 1 ");
 
}
 
 
 void code()
 {
 
   int i=0;
for (int i=0; i<6; i++) 
  {
  char key = keypad.getKey();
  if (key != NO_KEY)
  {
  PIN[z]=key;
  z++;
 
     if (z==6)
     {
      Serial.println("code1 ok");
 
    code2();
     }
     }
 }
 
  }
 
void code2()
 {
Serial.println("code2 ");
 
 int j=0;
 int x=0;
 
 for (int j=0; j<6; j++) 
  {
 char key = keypad.getKey();
  if (key != NO_KEY)
  {
  attempt[x]=key;
  x++;
    Serial.println(x);
     if (x==6)
     {
      Serial.println("code2 ok");
 }
  }
 }
 }
 
  void loop()
{
  code();
           } | 
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