#include "SevSeg.h"
SevSeg sevseg;
int D1 = 13; int D2= 12; int D3 = 11; int D4 = 10;
int A = 9; int B = 8; int C = 7; int D = 6;
int E = 5; int F = 4; int G = 3;
int buzzer = 2;
int userInput;

void setup() {
  byte numDigits = 4;
  byte digitPins[] = {D1, D2, D3, D4};
  byte segmentPins[] = {A, B, C, D, E, F, G};
  bool resistorsOnSegments = true;
  byte hardwareConfig = COMMON_CATHODE;
  
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  sevseg.setBrightness(90);
  Serial.begin(9600);

}

void loop() {
  Serial.println("enter a number from 1 to 9999 : ");
  while(Serial.available() == 0){

  }
  userInput = Serial.parseInt();
  if(userInput > 0 && userInput <= 9999){
    while(userInput > 0){
      sevseg.setNumber(userInput);
      sevseg.refreshDisplay();
      for(int i=0; i<201; i++){
        sevseg.refreshDisplay();
        delay(5);
      }
      sevseg.refreshDisplay();
      userInput--;
      sevseg.refreshDisplay();
    }
    
    for(int i=0; i<=3; i++){
      tone(buzzer, 1000); delay(500);
      noTone(buzzer); delay(300);
    }
  }
  else{
    Serial.println("number incorrect !!");
  }

}