example for unified sensors

Adafruit_BME280.cpp

@@ -61,6 +61,21 @@ Adafruit_BME280::Adafruit_BME280(int8_t cspin, int8_t mosipin, int8_t misopin,
                                  int8_t sckpin)
     : _cs(cspin), _mosi(mosipin), _miso(misopin), _sck(sckpin) {}
 
+
+
+Adafruit_BME280::~Adafruit_BME280(void) {
+  if (temp_sensor) {
+    delete temp_sensor;
+  }
+  if (pressure_sensor) {
+    delete pressure_sensor;
+  }
+  if (humidity_sensor) {
+    delete humidity_sensor;
+  }
+}
+
+
 /*!
  *   @brief  Initialise sensor with given parameters / settings
  *   @param addr the I2C address the device can be found on
@@ -533,6 +548,10 @@ uint32_t Adafruit_BME280::sensorID(void) { return _sensorID; }
     @return Adafruit_Sensor pointer to temperature sensor
  */
 Adafruit_Sensor *Adafruit_BME280::getTemperatureSensor(void) {
+  if (! temp_sensor) {
+    temp_sensor = new Adafruit_BME280_Temp(this);
+  }
+
   return temp_sensor;
 }
 
@@ -542,6 +561,9 @@ Adafruit_Sensor *Adafruit_BME280::getTemperatureSensor(void) {
     @return Adafruit_Sensor pointer to pressure sensor
  */
 Adafruit_Sensor *Adafruit_BME280::getPressureSensor(void) {
+  if (! pressure_sensor) {
+    pressure_sensor = new Adafruit_BME280_Pressure(this);
+  }
   return pressure_sensor;
 }
 
@@ -551,6 +573,9 @@ Adafruit_Sensor *Adafruit_BME280::getPressureSensor(void) {
     @return Adafruit_Sensor pointer to humidity sensor
  */
 Adafruit_Sensor *Adafruit_BME280::getHumiditySensor(void) {
+  if (! humidity_sensor) {
+    humidity_sensor = new Adafruit_BME280_Humidity(this);
+  }
   return humidity_sensor;
 }
 
@@ -570,8 +595,8 @@ void Adafruit_BME280_Temp::getSensor(sensor_t *sensor) {
   sensor->sensor_id = _sensorID;
   sensor->type = SENSOR_TYPE_AMBIENT_TEMPERATURE;
   sensor->min_delay = 0;
-  sensor->max_value = -40.0; /* Temperature range -40 ~ +85 C  */
-  sensor->min_value = +85.0;
+  sensor->min_value = -40.0; /* Temperature range -40 ~ +85 C  */
+  sensor->max_value = +85.0;
   sensor->resolution = 0.01; /*  0.01 C */
 }
 
@@ -610,8 +635,8 @@ void Adafruit_BME280_Pressure::getSensor(sensor_t *sensor) {
   sensor->sensor_id = _sensorID;
   sensor->type = SENSOR_TYPE_PRESSURE;
   sensor->min_delay = 0;
-  sensor->max_value = 300.0; /* 300 ~ 1100 hPa  */
-  sensor->min_value = 1100.0;
+  sensor->min_value = 300.0; /* 300 ~ 1100 hPa  */
+  sensor->max_value = 1100.0;
   sensor->resolution = 0.012; /* 0.12 hPa relative */
 }
 

Adafruit_BME280.h

@@ -131,7 +131,7 @@ public:
   void getSensor(sensor_t *);
 
 private:
-  int _sensorID = 0;
+  int _sensorID = 280;
   Adafruit_BME280 *_theBME280 = NULL;
 };
 
@@ -145,7 +145,7 @@ public:
   void getSensor(sensor_t *);
 
 private:
-  int _sensorID = 0;
+  int _sensorID = 280;
   Adafruit_BME280 *_theBME280 = NULL;
 };
 
@@ -214,7 +214,7 @@ public:
   Adafruit_BME280();
   Adafruit_BME280(int8_t cspin, SPIClass *theSPI = &SPI);
   Adafruit_BME280(int8_t cspin, int8_t mosipin, int8_t misopin, int8_t sckpin);
-
+  ~Adafruit_BME280(void);
   bool begin(uint8_t addr = BME280_ADDRESS, TwoWire *theWire = &Wire);
   bool init();
 
@@ -242,8 +242,11 @@ protected:
   TwoWire *_wire; //!< pointer to a TwoWire object
   SPIClass *_spi; //!< pointer to SPI object
 
+  //!< Adafruit_Sensor compat temperature sensor component
   Adafruit_BME280_Temp *temp_sensor = NULL;
+  //!< Adafruit_Sensor compat pressure sensor component
   Adafruit_BME280_Pressure *pressure_sensor = NULL;
+  //!< Adafruit_Sensor compat humidity sensor component
   Adafruit_BME280_Humidity *humidity_sensor = NULL;
 
   void readCoefficients(void);

examples/bme280_unified/bme280_unified.ino

@@ -0,0 +1,62 @@
+/***************************************************************************
+  This is a library for the BME280 humidity, temperature & pressure sensor
+  This example shows how to take Sensor Events instead of direct readings
+  
+  Designed specifically to work with the Adafruit BME280 Breakout
+  ----> http://www.adafruit.com/products/2652
+
+  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 and open-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_BME280.h>
+
+Adafruit_BME280 bme; // use I2C interface
+Adafruit_Sensor *bme_temp = bme.getTemperatureSensor();
+Adafruit_Sensor *bme_pressure = bme.getPressureSensor();
+Adafruit_Sensor *bme_humidity = bme.getHumiditySensor();
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println(F("BME280 Sensor event test"));
+
+  if (!bme.begin()) {
+    Serial.println(F("Could not find a valid BME280 sensor, check wiring!"));
+    while (1) delay(10);
+  }
+  
+  bme_temp->printSensorDetails();
+  bme_pressure->printSensorDetails();
+  bme_humidity->printSensorDetails();
+}
+
+void loop() {
+  sensors_event_t temp_event, pressure_event, humidity_event;
+  bme_temp->getEvent(&temp_event);
+  bme_pressure->getEvent(&pressure_event);
+  bme_humidity->getEvent(&humidity_event);
+  
+  Serial.print(F("Temperature = "));
+  Serial.print(temp_event.temperature);
+  Serial.println(" *C");
+
+  Serial.print(F("Humidity = "));
+  Serial.print(humidity_event.relative_humidity);
+  Serial.println(" %");
+
+  Serial.print(F("Pressure = "));
+  Serial.print(pressure_event.pressure);
+  Serial.println(" hPa");
+
+  Serial.println();
+  delay(1000);
+}