byte NumPinSeg []={17,16,6,7,8,9,10};
void Affiche7seg(int nbr);
int intervale=1000;
unsigned char Lut_7seg [16][7] = { 
   { 1,	1,	1,	1,	1,	1,	0},
   { 0,	1,	1,	0,	0,	0,	0},
   { 1,	1,	0,	1,	1,	0,	1},
   { 1,	1,	1,	1,	0,	0,	1},
   { 0,	1,	1,	0,	0,	1,	1},
   { 1,	0,	1,	1,	0,	1,	1},
   { 1,	0,	1,	1,	1,	1,	1},
   { 1,	1,	1,	0,	0,	0,	0},
   { 1,	1,	1,	1,	1,	1,	1},
   { 1,	1,	1,	1,	0,	1,	1},
   { 1,	1,	1,	0,	1,	1,	1},
   { 0,	0,	1,	1,	1,	1,	1},
   { 1,	0,	0,	1,	1,	1,	0},
   { 0,	1,	1,	1,	1,	0,	1},
   { 1,	0,	0,	1,	1,	1,	1},
   { 1,	0,	0,	0,	1,	1,	1}
};

void setup() {
  // put your setup code here, to run once:
 for(int i=0;i<7;i++)
 {
  pinMode(NumPinSeg[i],OUTPUT);
  digitalWrite(NumPinSeg [i], LOW);
 }
}

void loop() {
  static int cmpt=0;
  if (digitalRead(SW0))
    intervale=500;
  else
    intervale=1000;
  if (digitalRead(SW1))
    sens=1;
  else
    sens=-1;
  Affiche7seg( cmpt);
  cmpt=cmpt+sens;
  if (cmpt>15)cmpt=0;
  if (cmpt<0) cmpt=15;
  delay(intervale);
}

void Affiche7seg(int nbr)
{
for(int i=0;i<7;i++)
  {
    digitalWrite(NumPinSeg [i],Lut_7seg [nbr][i] );
  }
}