MS5611 support

libraries/Arduino-MS5611/MS5611_sealevel/MS5611_sealevel.ino

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+/*
+  MS5611 Barometric Pressure & Temperature Sensor. Sea Level
+  Read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/czujnik-cisnienia-i-temperatury-ms5611.html
+  GIT: https://github.com/jarzebski/Arduino-MS5611
+  Web: http://www.jarzebski.pl
+  (c) 2014 by Korneliusz Jarzebski
+*/
+
+#include <Wire.h>
+#include <MS5611.h>
+
+MS5611 ms5611;
+
+void setup() 
+{
+  Serial.begin(9600);
+
+  // Initialize MS5611
+  Serial.println("Initialize MS5611");
+
+  // Ultra high resolution: MS5611_ULTRA_HIGH_RES
+  // (default) High resolution: MS5611_HIGH_RES
+  // Standard: MS5611_STANDARD
+  // Low power: MS5611_LOW_POWER
+  // Ultra low power: MS5611_ULTRA_LOW_POWER
+  while(!ms5611.begin(MS5611_ULTRA_HIGH_RES))
+  {
+    Serial.println("Could not find a valid MS5611, check wiring!");
+    delay(500);
+  }
+
+  // Check settings
+  checkSettings();
+}
+
+void checkSettings()
+{
+  Serial.print("Oversampling: ");
+  Serial.println(ms5611.getOversampling());
+}
+
+void loop()
+{
+  // Set you real altitude
+  // My location: Poland, Bytom, 8 floor
+  double myRealAltitude = 335;
+
+  // Read true temperature & Pressure
+  double realTemperature = ms5611.readTemperature();
+  double realPressure = ms5611.readPressure();
+
+  // Calculate sealevel pressure
+  double seaLevelPressure = ms5611.getSeaLevel(realPressure, myRealAltitude);
+
+  Serial.println("--");
+
+  Serial.print("realTemp = ");
+  Serial.print(realTemperature);
+  Serial.print(" *C");
+
+  Serial.print(", realPressure = ");
+  Serial.print(realPressure/100);
+  Serial.print(" hPa");
+
+  Serial.print(" seaLevelPressure = ");
+  Serial.print(seaLevelPressure/100);
+  Serial.println(" hPa");
+
+  delay(1000);
+}