#include <Button.h>

byte tabla7seg[10]={0x3f,0x6,0x5b,0x4f,0x66,0x6d,0x7d,0x7,0x7f,0x6f};
byte pines_display[7]={3,4,5,6,7,8,9};
byte pines_pantalla[4]={14,15,16,17};
int contador=0;

unsigned long t1, t2;

#define BOTON_INC 11
#define BOTON_DEC 12
Button boton_suma = Button(BOTON_INC);
Button boton_resta = Button(BOTON_DEC);

void saca7seg(int n) {
 for (int i=0;i<7;i++) digitalWrite(pines_display[i], bitRead(tabla7seg[n],i));
}

void setup() {

  boton_suma.begin();
  boton_resta.begin();

  pinMode(13, OUTPUT);

  for(int i=0; i<7;i++){
    pinMode(pines_display[i], OUTPUT);
    digitalWrite(pines_display[i], LOW);
  }
  saca7seg(contador);

  t1=millis();
  t2=millis();
}

void segundero(){
  if(millis()-t1>=1000){
    saca7seg(++contador%10);
    t1+=1000; //
  }

}

void parpadeo(){
  if(millis()-t2>=200){
    digitalWrite(13,!digitalRead(13));
    t2+=200; //t1=millis();
  }

}


void loop() {
  segundero();
  parpadeo();

  delay(10);
}