 long b5; 
 short temperature;
 long pressure;
+float atm; // "standard atmosphere"
+float alti; 
 
 /*****************************************************************/
 

    // BMP085
    temperature = bmp085GetTemperature(bmp085ReadUT());
    pressure = bmp085GetPressure(bmp085ReadUP());
    Serial.print("Temp: ");
    Serial.print(temperature, 1);
    Serial.println(" C");
    Serial.print("Pres: ");
    Serial.print(pressure, 2);
    Serial.println(" hPa");
    Serial.println();

    // if the file is available, write to it:
    if (dataFile) {
      dataString = String(timestamp) + " , " + String(temperature) + ", " + String(pressure);
      dataFile.println(dataString);
      // print to the serial port too:
      //Serial.println(timestamp);
    }  
    // if the file isn't open, pop up an error:
    else {

  }
  Serial.println("SD initiated!.");
  dataFile = SD.open("datalog.txt", FILE_WRITE);
  dataFile.println("miliseconds, temperature, pressure");
  
  turn_output_stream_on();
  //turn_output_stream_off();
