KeyPadRepeater

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads

char hexaKeys[ROWS][COLS] =
{ {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {3, 2, 1, 0}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7, 6, 5, 4}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
String minhaStr ;
unsigned long meuValor;
char  kpadState;
char customKey ;
char oldKey ;
//-----------------------------------------
void setup()
{
  Serial.begin(9600);
}
//-----------------------------------------
void loop()
{
  customKey = customKeypad.getKey();
  kpadState = customKeypad.getState();

  switch ( kpadState )
  {
    case PRESSED:
      if (customKey)
      {
        oldKey = customKey;
        if ((customKey >= '0' ) and (customKey <= '9'))
        {
          minhaStr += customKey;
          meuValor = minhaStr.toInt();
          Serial.print("meuValor "); Serial.println(meuValor);
        }
      }
      break;

    case HOLD:
      switch (oldKey)
      {
        case '2':
          Serial.print("opcao "); Serial.println("A");
          break;
        case '4':
          Serial.print("opcao "); Serial.println("B");
          break;
        case '6':
          Serial.print("opcao "); Serial.println("C");
          break;
        case '8':
          Serial.print("opcao "); Serial.println("D");
          break;
      }
      break;

    case RELEASED:
      oldKey = ' ';
      break;
  }
}