add mock example from bmp280

examples/bmp280_sensortest/bmp280_sensortest.ino

@@ -0,0 +1,61 @@
+/***************************************************************************
+  This is a library for the BMP280 humidity, temperature & pressure sensor
+  This example shows how to take Sensor Events instead of direct readings
+  
+  Designed specifically to work with the Adafruit BMP280 Breakout
+  ----> http://www.adafruit.com/products/2651
+
+  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
+  to interface.
+
+  Adafruit invests time and resources providing this open source code,
+  please support Adafruit andopen-source hardware by purchasing products
+  from Adafruit!
+
+  Written by Limor Fried & Kevin Townsend for Adafruit Industries.
+  BSD license, all text above must be included in any redistribution
+ ***************************************************************************/
+
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_BMP280.h>
+
+Adafruit_BMP280 bmp; // use I2C interface
+Adafruit_Sensor *bmp_temp = bmp.getTemperatureSensor();
+Adafruit_Sensor *bmp_pressure = bmp.getPressureSensor();
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println(F("BMP280 Sensor event test"));
+
+  if (!bmp.begin()) {
+    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
+    while (1) delay(10);
+  }
+
+  /* Default settings from datasheet. */
+  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
+                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
+                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
+                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
+                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
+
+  bmp_temp->printSensorDetails();
+}
+
+void loop() {
+  sensors_event_t temp_event, pressure_event;
+  bmp_temp->getEvent(&temp_event);
+  bmp_pressure->getEvent(&pressure_event);
+  
+  Serial.print(F("Temperature = "));
+  Serial.print(temp_event.temperature);
+  Serial.println(" *C");
+
+  Serial.print(F("Pressure = "));
+  Serial.print(pressure_event.pressure);
+  Serial.println(" hPa");
+
+  Serial.println();
+  delay(2000);
+}