/* DECLARACIONES */

const int A = 2;
const int B = 3;
const int C = 4;
const int D = 5;
const int E = 6;
const int F = 7;
const int G = 8;

const int N = 7;
const int SEGMENTOS[N] = {A,B,C,D,E,F,G};

const int DIGITOS[10][N] = {
/*0*/ {0,0,0,0,0,0,1},
/*1*/ {1,0,0,1,1,1,1},
/*2*/ {0,0,1,0,0,1,0},
/*3*/ {0,0,0,0,1,1,0},
/*4*/ {1,0,0,1,1,0,0},
/*5*/ {0,1,0,0,1,0,0},
/*6*/ {0,1,0,0,0,0,0},
/*7*/ {0,0,0,1,1,1,1},
/*8*/ {0,0,0,0,0,0,0},
/*9*/ {0,0,0,0,1,0,0}
};

const int OFF = HIGH;

/*----------------- PULSADOR -----------------*/
const int PULSADOR = 9; //pin digital pulsador
int cont = 0; //contador de pulsaciones
/*--------------------------------------------*/

/* CONFIGURACIÓN */
void setup()
{
  for (int i=0; i<N; i++){
    pinMode(SEGMENTOS[i], OUTPUT);
    digitalWrite(SEGMENTOS[i], OFF);//apagar
  }

//+++++ PULSADOR ++++++++
pinMode(PULSADOR, INPUT);
//+++++++++++++++++++++++
}

void loop()
{
  print(cont); //mostrar el valor de cont en el display
  delay (300);
  while(digitalRead(PULSADOR)==LOW); //esperar que se presione el pulsador
  
  cont ++; //incrementar cont
  if(cont>9){ //si cont supera 9 ponerlo de nuevo a 0
    cont = 0;
  }
  
  while(digitalRead(PULSADOR)==HIGH); //esperar que el pulsador deje de estar presionado
}

/* FUNCIONES */
void print(int d){
  for (int i=0; i<N; i++){
  	digitalWrite(SEGMENTOS[i], DIGITOS[d][i]);
  }
}