#define DATA 4
#define  LATCH 7
#define  CLOCK 8

byte framebuffer[8];

void setup() {
  DDRB |= B00111111;
  DDRD |= B11111100; 
}


void loop() {
  ApagaTudo();

  Rasterizar();
  delay(1000);

  framebuffer[7] = 3;
  framebuffer[6] = 3;
  framebuffer[5] = 3;

  Rasterizar();
  delay(1000);


  framebuffer[4] = 4;
  framebuffer[3] = 4;
 
  Rasterizar();
  delay(1000);

  framebuffer[2] = 1;
  framebuffer[1] = 1;
  framebuffer[0] = 1;
 
  Rasterizar();
  delay(3000);
}

void Rasterizar(){
byte cor;

 digitalWrite(LATCH, LOW);

for (int i = 7; i >= 0; i--) {  
     
     cor = framebuffer[i];

     switch(cor){
      case 0:
       EnviaApagado();
      break;
      case 1:
       EnviaVermelho();
      break;
      case 2:
       EnviaVerde();
      break;    
      case 3:
       EnviaAzul();
      break;
      case 4:
       EnviaAmarelo();
      break;                   
     }

    }

  digitalWrite(LATCH, HIGH);
  digitalWrite(LATCH, LOW);   
}

void ApagaTudo(){
for (int i = 7; i >= 0; i--) {  
     
     framebuffer[i] = 0;

    }
}

void EnviaApagado(){ 
  digitalWrite(CLOCK, LOW);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 
  
}

void EnviaVermelho(){ 
  digitalWrite(CLOCK, LOW);

  digitalWrite(DATA, HIGH);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 
  
}

void EnviaVerde(){ 
  digitalWrite(CLOCK, LOW);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH);

  digitalWrite(DATA, HIGH);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 
  
}

void EnviaAzul(){ 
  digitalWrite(CLOCK, LOW);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH);

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 

  digitalWrite(DATA, HIGH);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 
  
}

void EnviaAmarelo(){ 
  digitalWrite(CLOCK, LOW);

  digitalWrite(DATA, HIGH);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH);

  digitalWrite(DATA, HIGH);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 

  digitalWrite(DATA, LOW);

  digitalWrite(CLOCK, LOW);
  digitalWrite(CLOCK, HIGH); 
  
}