/*
  SN74HC595/6  PIN Equivalente
  14 DS	   14 SER     SERIAL_IN
  13 OE	   13 OE      GND
  12 STCP	 12 RCLK    LATCH
  11 SHCP	 11 SRCLK   CLOCK
  10 MR	   10 SRCLR   +V
  9 Q7S    9 QH      SERIAL_OUT
*/

#include <ShiftRegister74HC595.h>
#define SDI 7
#define SCLK 6
#define LOAD 5
#define DIGITS 3

int button = A0;
bool flag = true;
ShiftRegister74HC595<DIGITS> sr(SDI, SCLK, LOAD);

int value, digit1, digit2, digit3;
// **************************************** Your matix
/*uint8_t  digits[] = {B11000000, //0
                     B11111001, //1
                     B10100100, //2
                     B10110000, //3
                     B10011001, //4
                     B10010010, //5
                     B10000010, //6
                     B11111000, //7
                     B10000000, //8
                     B10010000 //9
                    };*/

//                     BCDEGFA
// **************************************** My matix
uint8_t  digits[] = {B01111011, //0
                     B01100000, //1
                     B01011101, //2
                     B01110101, //3
                     B01100110, //4
                     B00110111, //5
                     B00111111, //6
                     B01100001, //7
                     B01111111, //8
                     B01110111 //9
                    };
//------------------------------------------------------------------
void setup() {
  pinMode(button, INPUT_PULLUP);
}
//------------------------------------------------------------------
void loop() {
  if (digitalRead(button) == LOW)
  {
    flag = true;
    for (int i = 0; i <= 999; i++)  {
      if (digitalRead(button) == HIGH)
        break;
      showNumber(i);
      delay(100);
    }
  }
  if (digitalRead(button) == HIGH and flag == true)
  {
    flag = false;
    delay(2000);
    sr.setAllLow();
  }
}
//------------------------------------------------------------------
void showNumber(int num){
  digit1 = num % 10 ;
  digit2 = (num / 10) % 10 ;
  digit3 = (num / 100) % 10 ;
  //Send them to 7 segment displays
  uint8_t numberToPrint[] = {digits[digit3], digits[digit2], digits[digit1]};
  sr.setAll(numberToPrint);
}