void setup()
{
  Serial.begin(9600); // start serial for output
  lcd.begin(16,2);
  lcd.setCursor(0,0);
   lcd.setCursor(11, 2);                        // Posiciona cursor posição 6 linha 0
  lcd.print("P");                             // Imprime P  Pressao
   lcd.setCursor(11, 0);                       // Posiciona cursor posição 11 linha 0
    lcd.print("T");
   lcd.setCursor(0,0);
   lcd.print("A");

  Serial.println("Setting up BMP085");

  Wire.begin();


  bmp085_get_cal_data( );
   bmp085_read_temperature_and_pressure(&temperature,& pressure);
   // altitude = (float)44330 * (1 - pow(((float) flpressure/p0), 0.190295));
   P0=pressao;
   Serial.print("Temperature:");
   lcd.setCursor(12,2);
   lcd.print(pressure);
   lcd.setCursor(0,1);




  float temp =(float)temperature / 10.0;
   Serial.print(temp,2);
   lcd.setCursor(12,0);
   lcd.print(temp,2);
   float pressao = (float)pressao/100.0;
   Serial.print("Pressao:");
   Serial.print(pressure,DEC);
    Serial.print(" ");


  flpressure=pressure;// move long type pressure into float type flpressure
  p0= lowpassFast = lowpassSlow = flpressure;

  Serial.print(" p0 = ");
  Serial.println(p0);

 // pinMode(3, INPUT); // Set our input pins as such for altitude command input from receiver via pin D3


  //Serial.print(" p0 = ");
 //Serial.println(p0);
  pinMode(3, INPUT); // Set our input pins as such for altitude command input from receiver via pin D3
}
void loop()
{

 double P0;
  P0= flpressure;
   pressure=pressao/101325;


   bmp085_read_temperature_and_pressure(&temperature,& pressure);
  Serial.print("Temperature:");
   float temp =(float)temperature / 10.0;
   Serial.print(temp,2);
     Serial.print("Pressao:");
   Serial.print(pressure,DEC);
   Serial.print(" ");

  flpressure=  pressure;//
   p0 = pressao;// move long type pressure into float type flpressure
 //ALTITUDE ABSOLUTA;
  altitude = (float)44330 * (1 - pow(((float) flpressure/p0), 0.190295));

   Serial.print("ALTITUDE;");
  Serial.print(altitude);
   Serial.println("m ");
   lcd.setCursor(0,1);
   lcd.print(altitude);
   //ALTITUDE RELATIVA
   altitude = flpressure/(p0=P0);

    Serial.print("ALTITUDEreal;");
  Serial.print(altitude);
   Serial.println("m ");
   lcd.setCursor(0,1);
   lcd.print(altitude);