test

examples/bmp183test/bmp183test.ino

@@ -0,0 +1,134 @@
+#include <SPI.h>
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BMP183_U.h>
+
+/* This driver uses the Adafruit unified sensor library (Adafruit_Sensor),
+   which provides a common 'type' for sensor data and some helper functions.
+   
+   To use this driver you will also need to download the Adafruit_Sensor
+   library and include it in your libraries folder.
+
+   You should also assign a unique ID to this sensor for use with
+   the Adafruit Sensor API so that you can identify this particular
+   sensor in any data logs, etc.  To assign a unique ID, simply
+   provide an appropriate value in the constructor below (12345
+   is used by default in this example).
+   
+   Connections
+   ===========
+   Connect VDD to 3-5V DC
+   Connect GROUND to common ground
+*/
+
+// For hardware SPI:
+// Connect SCK to SPI Clock, SDO to SPI MISO, and SDI to SPI MOSI
+// See  http://arduino.cc/en/Reference/SPI for your Arduino's SPI pins!
+// On UNO, Clock is #13, MISO is #12 and MOSI is #11
+
+// You'll also need a chip-select pin, use any pin!
+#define BMP183_CS   10
+
+Adafruit_BMP183_Unified bmp = Adafruit_BMP183_Unified(BMP183_CS);  // use hardware SPI
+
+/**************************************************************************/
+/*
+    Displays some basic information on this sensor from the unified
+    sensor API sensor_t type (see Adafruit_Sensor for more information)
+*/
+/**************************************************************************/
+void displaySensorDetails(void)
+{
+  sensor_t sensor;
+  bmp.getSensor(&sensor);
+  Serial.println("------------------------------------");
+  Serial.print  ("Sensor:       "); Serial.println(sensor.name);
+  Serial.print  ("Driver Ver:   "); Serial.println(sensor.version);
+  Serial.print  ("Unique ID:    "); Serial.println(sensor.sensor_id);
+  Serial.print  ("Max Value:    "); Serial.print(sensor.max_value); Serial.println(" hPa");
+  Serial.print  ("Min Value:    "); Serial.print(sensor.min_value); Serial.println(" hPa");
+  Serial.print  ("Resolution:   "); Serial.print(sensor.resolution); Serial.println(" hPa");  
+  Serial.println("------------------------------------");
+  Serial.println("");
+  delay(500);
+}
+
+/**************************************************************************/
+/*
+    Arduino setup function (automatically called at startup)
+*/
+/**************************************************************************/
+void setup(void) 
+{
+  Serial.begin(9600);
+  Serial.println("Pressure Sensor Test"); Serial.println("");
+  
+  /* Initialise the sensor */
+  if(!bmp.begin())
+  {
+    /* There was a problem detecting the BMP085 ... check your connections */
+    Serial.print("Ooops, no BMP085 detected ... Check your wiring or I2C ADDR!");
+    while(1);
+  }
+  
+  /* Display some basic information on this sensor */
+  displaySensorDetails();
+}
+
+/**************************************************************************/
+/*
+    Arduino loop function, called once 'setup' is complete (your own code
+    should go here)
+*/
+/**************************************************************************/
+void loop(void) 
+{
+  /* Get a new sensor event */ 
+  sensors_event_t event;
+  bmp.getEvent(&event);
+ 
+  /* Display the results (barometric pressure is measure in hPa) */
+  if (event.pressure)
+  {
+    /* Display atmospheric pressue in hPa */
+    Serial.print("Pressure:    ");
+    Serial.print(event.pressure);
+    Serial.println(" hPa");
+    
+    /* Calculating altitude with reasonable accuracy requires pressure    *
+     * sea level pressure for your position at the moment the data is     *
+     * converted, as well as the ambient temperature in degress           *
+     * celcius.  If you don't have these values, a 'generic' value of     *
+     * 1013.25 hPa can be used (defined as SENSORS_PRESSURE_SEALEVELHPA   *
+     * in sensors.h), but this isn't ideal and will give variable         *
+     * results from one day to the next.                                  *
+     *                                                                    *
+     * You can usually find the current SLP value by looking at weather   *
+     * websites or from environmental information centers near any major  *
+     * airport.                                                           *
+     *                                                                    *
+     * For example, for Paris, France you can check the current mean      *
+     * pressure and sea level at: http://bit.ly/16Au8ol                   */
+     
+    /* First we get the current temperature from the BMP085 */
+    float temperature;
+    temperature = bmp.getTemperature();
+    Serial.print("Temperature: ");
+    Serial.print(temperature);
+    Serial.println(" C");
+
+    /* Then convert the atmospheric pressure, SLP and temp to altitude    */
+    /* Update this next line with the current SLP for better results      */
+    float seaLevelPressure = SENSORS_PRESSURE_SEALEVELHPA;
+    Serial.print("Altitude:    "); 
+    Serial.print(bmp.pressureToAltitude(seaLevelPressure,
+                                        event.pressure,
+                                        temperature)); 
+    Serial.println(" m");
+    Serial.println("");
+  }
+  else
+  {
+    Serial.println("Sensor error");
+  }
+  delay(1000);
+}