laboratorio 12 ard

#include <Sprite.h>
#include <Matrix.h>

int count = 0;

int x = 8;
int letra1 = 0;
int letra2 = 0;

int tiempoEspera = 0;

const int numChips = 1;
int DIN  = 16;
int CLK  = 17;
int LOAD = 18;
                     //DIN, CLK, LOAD, #chips
Matrix matrix = Matrix(DIN, CLK, LOAD, numChips);

void setup() {
  pinMode(16,OUTPUT);
  pinMode(17,OUTPUT);
  pinMode(18,OUTPUT);
  tiempoEspera = 150;
  Serial.begin(9600);
}

void loop() {
  if(Serial.available() > 0){
     byte dato = Serial.read();
     //si el dato esta entre A-Z o a-z
     if((64 < dato && dato < 91) || (96 < dato && dato < 123)){
        //pasamos a mayuscula el caracter
        byte caracterMayuscula = toUpperCase(dato);
        letra1 = caracterMayuscula-65;
        mover();
     }else {
       //si hay espacio
       if(dato == 32){
         letra1 = 26;
         mover();
        }
     }
  }else{
    letra1 = 26;
    mover();
  }
}

void mover(){
  do{
    delay(tiempoEspera);
    count--;
    x--;
    pintar();
  }while(x >= 0);
  x = 8;
  count = 6;
  letra2 = letra1;
}

Sprite letras(int valor){
  //creamos los sprite con 5 pixeles de ancho y 5 pixelex de alto
  int _width = 5;
  int _height = 5;
  switch(valor){
    case 0:
       //A
       return Sprite(_width, _height,
        B10001, B10001, B11111, B10001, B11111
      );
      break;
    case 1:
      //B
      return Sprite(5, 5,
        B11110, B10001, B11110, B10001, B11110
      );
      break;
    case 2:
      //C
      return Sprite(5, 5,
        B11111, B10000, B10000, B10000, B11111
      );
      break;
    case 3:
      //D
      return Sprite(5, 5,
        B11110, B10001, B10001, B10001, B11110
      );
      break;
    case 4:
      //E
      return Sprite(5, 5,
        B11111, B10000, B11111, B10000, B11111
      );
      break;
    case 5:
      //F
      return Sprite(5, 5,
        B10000, B10000, B11110, B10000, B11110
      );
      break;
    case 6:
      //G
      return Sprite(5, 5,
        B11111, B10001, B11111, B10000, B11111
      );
      break;
    case 7:
      //H
      return Sprite(5, 5,
        B10001, B10001, B11111, B10001, B10001
      );
      break;
    case 8:
      //I
      return Sprite(5, 5,
        B11111, B00100, B00100, B00100, B11111
      );
      break;
    case 9:
      //J
      return Sprite(5, 5,
        B11100, B00100, B00100, B00100, B11111
      );
      break;
    case 10:
      //K
      return Sprite(5, 5,
        B10001, B10010, B11100, B10010, B10001
      );
      break;
    case 11:
      //L
      return Sprite(5, 5,
        B11111, B10000, B10000, B10000, B10000
      );
      break;
    case 12:
      //M
      return Sprite(5, 5,
        B10001, B10001, B10001, B10101, B11011
      );
      break;
    case 13:
      //N
      return Sprite(5, 5,
        B10001, B10011, B10101, B11001, B10001
      );
      break;
    case 14:
      //O
      return Sprite(5, 5,
        B11111, B10001, B10001, B10001, B11111
      );
      break;
    case 15:
      //P
      return Sprite(5, 5,
        B10000, B10000, B11110, B10001, B11110
      );
      break;
     case 16:
      //Q
      return Sprite(5, 5,
        B11111, B10011, B10001, B10001, B11111
      );
      break;
    case 17:
      //R
      return Sprite(5, 5,
        B10001, B10010, B11110, B10001, B11110
      );
      break;
    case 18:
      //S
      return Sprite(5, 5,
        B11110, B00001, B01110, B10000,B01110
      );
      break;
    case 19:
      //T
      return Sprite(5, 5,
        B00100, B00100, B00100, B00100, B11111
      );
      break;
    case 20:
      //U
      return Sprite(5, 5,
        B11111, B10001, B10001, B10001, B10001
      );
      break;
    case 21:
      //V
      return Sprite(5, 5,
        B00100, B01010, B10001, B10001, B10001
      );
      break;
    case 22:
      //W
      return Sprite(5, 5,
        B10001, B11011, B10101, B10001, B10001
      );
      break;
    case 23:
      //X
      return Sprite(5, 5,
        B10001, B01010, B00100, B01010, B10001
      );
      break;
    case 24:
      //Y
      return Sprite(5, 5,
        B00100, B00100, B01110, B10001, B10001
      );
      break;
    case 25:
      //Z
      return Sprite(5, 5,
        B11111, B01000, B00100, B00010, B11111
      );
      break;
    case 26:
      //Blanco
      return Sprite(5, 5,
        B00000, B00000, B00000, B00000, B00000
      );
      break;
  }
}

void pintar(){
  matrix.clear();
  //se coloca el Sprite en pantalla
  matrix.write(x, 0, letras(letra1));
  if(count >= 0){
    matrix.write(x - 8, 0, letras(letra2));
  }
}