//Inicializar o conversor AD
//Inicializar os pinos de I/Os para os 4 LEDs

unsigned int valor = 0;
int tensao;

  while(1)
  {
	  while ((AD1_Measure(1) != ERR_OK));
	  	  AD1_GetValue16(&valor);
	  	  valor >>= 8;  //faz downscale para 8 bits
	  	  
	  	  tensao = (valor * 33)/(256);
	  	  
	  	  if (valor >= 0 & valor < 50)
	  	  {
	  		  Bits1_PutBit(3,FALSE);
	  		Bits1_PutBit(0,TRUE);
	  		Bits1_PutBit(1,TRUE);
	  		Bits1_PutBit(2,TRUE);
	  	  }
	  	  if (valor >= 50 & valor < 100)
	  	  {
	  		  Bits1_PutBit(2,FALSE);
	  		Bits1_PutBit(0,TRUE);
	  		Bits1_PutBit(1,TRUE);
	  		Bits1_PutBit(3,TRUE);
	  	  }
	  	  if (valor >= 100 & valor < 150)
	  	  {
	  		  Bits1_PutBit(1,FALSE);
	  		Bits1_PutBit(0,TRUE);
	  		Bits1_PutBit(2,TRUE);
	  		Bits1_PutBit(3,TRUE);
	  	  }
	  	  if (valor >= 150 & valor < 200)
	  	  {
	  		  Bits1_PutBit(0,FALSE);
	  		Bits1_PutBit(2,TRUE);
	  		Bits1_PutBit(1,TRUE);
	  		Bits1_PutBit(3,TRUE);
	  	  }
	  	  
  }