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BMP085_TEST/BMP085_TEST.ino

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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);
+}