#define a1 PA0
#define a2 PA1
#define a3 PA2
#define a4 PA3
#define a5 PA4
#define a6 PA5
#define a7 PA6
#define a8 PA7
#define a9 PA8
#define a10 PA9
#define a11 PA10
#define a12 PA11
#define a15 PA12


#define b1 PB0
#define b2 PB1
#define b3 PB3
#define b4 PB4
#define b5 PB5
#define b6 PB6
#define b7 PB7
#define b8 PB8
#define b9 PB9
#define b10 PB10
#define b11 PB11
#define b12 PB12
#define b13 PB13
#define b14 PB14
#define b15 PB15

int count =0;

int b=0;
int a[29];



void setup() {
  pinMode(a1, OUTPUT);
  pinMode(a2, OUTPUT);
  pinMode(a3, OUTPUT);
  pinMode(a4, OUTPUT);
  pinMode(a5, OUTPUT);
  pinMode(a6, OUTPUT);
  pinMode(a7, OUTPUT);
  pinMode(a8, OUTPUT);
  pinMode(a9, OUTPUT);
  pinMode(a10, OUTPUT);
  pinMode(a11, OUTPUT);
  pinMode(a12, OUTPUT);
  pinMode(a15, OUTPUT);


  pinMode(b1, OUTPUT);
  pinMode(b2, OUTPUT);
  pinMode(b3, OUTPUT);
  pinMode(b4, OUTPUT);
  pinMode(b5, OUTPUT);
  pinMode(b6, OUTPUT);
  pinMode(b7, OUTPUT);
  pinMode(b8, OUTPUT);
  pinMode(b9, OUTPUT);
  pinMode(b10, OUTPUT);
  pinMode(b11, OUTPUT);
  pinMode(b12, OUTPUT);
  pinMode(b13, OUTPUT);
  pinMode(b14, OUTPUT);
  pinMode(b15, OUTPUT);


}

void loop() {
  count++;
  delay(20);
  digitalWrite(a1, HIGH );
  digitalWrite(a2, HIGH );
  digitalWrite(a3, HIGH );
  digitalWrite(a4, HIGH );
  digitalWrite(a5, HIGH );
  digitalWrite(a6, HIGH );
  digitalWrite(a7, HIGH );
  digitalWrite(a8, HIGH );
  digitalWrite(a9, HIGH );
  digitalWrite(a10, HIGH );
  digitalWrite(a11, HIGH );
  digitalWrite(a12, HIGH );
  digitalWrite(a15, HIGH );

  digitalWrite(b1, HIGH );
  digitalWrite(b2, HIGH );
  digitalWrite(b3, HIGH );
  digitalWrite(b4, HIGH );
  digitalWrite(b5, HIGH );
  digitalWrite(b6, HIGH );
  digitalWrite(b7, HIGH );
  digitalWrite(b8, HIGH );
  digitalWrite(b9, HIGH );
  digitalWrite(b10, HIGH );
  digitalWrite(b11, HIGH );
  digitalWrite(b12, HIGH );
  digitalWrite(b13, HIGH );
  digitalWrite(b14, HIGH );
  digitalWrite(b15, HIGH );
  delay(30);


  digitalWrite(b1, LOW );
  digitalWrite(b2, LOW );
  digitalWrite(b3, LOW );
  digitalWrite(b4, LOW );
  digitalWrite(b5, LOW );
  digitalWrite(b6, LOW );
  digitalWrite(b7, LOW );
  digitalWrite(b8, LOW );
  digitalWrite(b9, LOW );
  digitalWrite(b10, LOW );
  digitalWrite(b11, LOW );
  digitalWrite(b12, LOW );
  digitalWrite(b13, LOW );
  digitalWrite(b14, LOW );
  digitalWrite(b15, LOW );

  digitalWrite(a1, LOW );
  digitalWrite(a2, LOW );
  digitalWrite(a3, LOW );
  digitalWrite(a4, LOW );
  digitalWrite(a5, LOW );
  digitalWrite(a6, LOW );
  digitalWrite(a7, LOW );
  digitalWrite(a8, LOW );
  digitalWrite(a9, LOW );
  digitalWrite(a10, LOW );
  digitalWrite(a11, LOW );
  digitalWrite(a12, LOW );
  digitalWrite(a15, LOW );

  }