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// BMP085_test1

// by Filipe Vieira

// Simple test of BMP085 output using default settings.

// This example requires AUTO_UPDATE_TEMPERATURE to be true in bmp085.h otherwise temperature will not update.

// IMPORTANT!! To get correct values you MUST CHANGE init() parameters, in

// this example I've set 250m based on GPS data for my location.

#include <Wire.h>

#include <BMP085.h>

BMP085 dps = BMP085();      // Digital Pressure Sensor

long Temperature = 0, Pressure = 0, Altitude = 0;

void setup(void) {

  Serial.begin(9600);

  Wire.begin();

  delay(1000);

  // uncomment for different initialization settings

  //dps.init();     // QFE (Field Elevation above ground level) is set to 0 meters.

                  // same as init(MODE_STANDARD, 0, true);

  //dps.init(MODE_STANDARD, 101850, false);  // 101850Pa = 1018.50hPa, false = using Pa units

                  // this initialization is useful for normalizing pressure to specific datum.

                  // OR setting current local hPa information from a weather station/local airport (QNH).

  dps.init(MODE_ULTRA_HIGHRES, 25000, true);  // 250 meters, true = using meter units

                  // this initialization is useful if current altitude is known,

                  // pressure will be calculated based on TruePressure and known altitude.

  // note: use zeroCal only after initialization.

  // dps.zeroCal(101800, 0);    // set zero point

}

void loop(void) {

  dps.getPressure(&Pressure);

  dps.getAltitude(&Altitude);

  Serial.print("  Alt(cm):");

  Serial.print(Altitude);

  Serial.print("  Pressure(Pa):");

  Serial.println(Pressure);

}