Customer #427454 on BMP085 Barometric Pressure Sensor Quickstart

I’m trying to do just the same. So far my code looks like this:

float altitude;
float prevAltitude = 0;
float verticalSpeed = 0;

void loop()
{

  float pressure = bmp085GetPressure(bmp085ReadUP());

  altitude = calcAltitude(pressure); //Uncompensated caculation - in Meters
  verticalSpeed = prevAltitude - altitude;
  prevAltitude = altitude;
  Serial.print("Altitude: "); //this will go to a display later
  Serial.print(altitude, 2); //display 2 decimal places
  Serial.println(" M");

  Serial.print("Vertical Speed:" );//dito
  Serial.print(verticalSpeed, 1);
  Serial.println("m/s");

  if (verticalSpeed > 0.3)
    {playTone(verticalSpeed); //I have added a dc beeper to my circuit, I'm currently tweaking the beeps. My ears bleed.



delay(1000); //I'll probably change this value to 250 or so. I need it for paragliding where even small lifts count.
}