int led1 = 2; 
int led2 = 3; 
int led3 = 4; 
int led4 = 5; 
int onoff = 6; 
int blue = 9;
int green = 10;
int red = 11;
int time = 0;
int i=0;

void setup () { 
  
  pinMode(led1, INPUT);
  pinMode(led2, INPUT);
  pinMode(led3, INPUT);
  pinMode(led4, INPUT);
  pinMode(onoff, OUTPUT);
  pinMode(red,  OUTPUT);
  pinMode(green,  OUTPUT);
  pinMode(blue,   OUTPUT);
  analogWrite(red, 0xFF);
  analogWrite(green, 0x5A);
  analogWrite(blue, 0x32);
  delay(2000);
  analogWrite(red, 0);
  analogWrite(green, 0);
  analogWrite(blue, 0);
  digitalWrite(onoff, HIGH);
  delay(100);
  digitalWrite(onoff, LOW);
  
} 

int ledRead(void)
{
  
  int l1;
  int l2;
  int l3;
  int l4;
  int codigo = 0;
  l1 = !digitalRead(led1);
  l2 = !digitalRead(led2);
  l3 = !digitalRead(led3);
  l4 = !digitalRead(led4);
  codigo = l1 + 2*l2 + 4*l3 + 8*l4;
  return(codigo);
  
}

// 0000 = 0 = 000000 (OFF)
// 0001 = 1 = FAFF00 (amarillo)
// 0010 = 2 = F41B00 (rojo)
// 0011 = 3 = F71CB6 (magenta)
// 0100 = 4 = 1732FF (azul)
// 0101 = 5 = 33FC00 (verde)
// 1111 = 15 = FFFFFF (blanco)

void codigoRGB(void)
{
  
  int codigo = ledRead();
  
  if(codigo == 0)
  {
    analogWrite(red, 0x00);
    analogWrite(green, 0x00);
    analogWrite(blue, 0x00);
  }
  else if(codigo == 1)
  {
    analogWrite(red, 0xFF);
    analogWrite(green, 0x60);
    analogWrite(blue, 0x00);
  }
  else if(codigo == 2)
  {
    analogWrite(red, 0xFF);
    analogWrite(green, 0x1B);
    analogWrite(blue, 0x00);
  }
  else if(codigo == 3)
  {
    analogWrite(red, 0xF7);
    analogWrite(green, 0x1C);
    analogWrite(blue, 0xB6);
  }
  else if(codigo == 4)
  {
    analogWrite(red, 0x17);
    analogWrite(green, 0x32);
    analogWrite(blue, 0xFF);
  }
  else if(codigo == 5)
  {
    analogWrite(red, 0x33);
    analogWrite(green, 0xFC);
    analogWrite(blue, 0x00);
  }
  else if(codigo == 15)
  {
    analogWrite(red, 0xFF);
    analogWrite(green, 0x5A);
    analogWrite(blue, 0x32);
  }
  
}  

void loop () { 
  
  codigoRGB();
  delay(10);
  
}