void BMP_280(){
  Serial.print(F("Temperature = "));
  Serial.print(bmp.readTemperature());
  Serial.println(" *C");
  Serial.print(F("Pressure = "));
  Serial.print(bmp.readPressure());
  Serial.println(" Pa");
  Serial.print(F("Approx altitude = "));    
  Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
  Serial.println(" m");
}