restructured classes to provide sensor interface

src/main.cpp

@@ -1,44 +1,16 @@
 #include <Arduino.h>
-#include <Wire.h>
-#include <Adafruit_BMP280.h>
+#include <sensors/BmpSensor.h>
 
-Adafruit_BMP280 bmp; // use I2C interface
-Adafruit_Sensor *bmp_temp = bmp.getTemperatureSensor();
-Adafruit_Sensor *bmp_pressure = bmp.getPressureSensor();
+#define SLEEP_TIME 2
+
+Sensor *bmpSensor;
 
 void setup() {
-    Serial.begin(112500);
-    while ( !Serial ) delay(100);   // wait for native usb
-
-    unsigned status;
-    status = bmp.begin(0x76); //set the correct I2C port
-
-    //query status and reboot the board if no sensor is detected
-    if (!status) {
-        ESP.restart();
-    }
-
-    /* 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();
+    bmpSensor = new BmpSensor();
 }
 
 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.print(" *C | ");
-
-    Serial.print(F("Pressure = "));
-    Serial.print(pressure_event.pressure);
-    Serial.println(" hPa");
-    delay(100);
+    bmpSensor->sample();
+    bmpSensor->enableStandbyMode();
+    delay(SLEEP_TIME * 1000);
 }

src/sensors/BmpSensor.cpp

@@ -0,0 +1,64 @@
+#include <Arduino.h>
+#include <Wire.h>
+#include <Adafruit_BMP280.h>
+#include "BmpSensor.h"
+
+BmpSensor::BmpSensor() {
+    this->BmpSensor::sensor_setup();
+    this->state = SensorState::ASLEEP;
+}
+
+void BmpSensor::sensor_setup() {
+    Serial.begin(112500);
+    while (!Serial) delay(100);   // wait for native usb
+
+    unsigned status;
+    status = this->bmp.begin(0x76); //set the correct I2C port
+
+    //query status and reboot the board if no sensor is detected
+    if (!status) {
+        ESP.restart();
+
+    }
+
+/* Default settings from datasheet. */
+    this->enableStandbyMode();
+}
+
+void BmpSensor::wakeUp() {
+    this->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. */
+    );
+}
+
+void BmpSensor::enableStandbyMode() {
+    this->bmp.setSampling(Adafruit_BMP280::MODE_SLEEP,     /* 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. */
+    );
+}
+
+void BmpSensor::sample() {
+    //wake sensor up if it is in standby mode
+    if (this->state == SensorState::ASLEEP)
+        this->wakeUp();
+
+    sensors_event_t temp_event, pressure_event;
+    this->bmp_temp->getEvent(&temp_event);
+    bmp_pressure->getEvent(&pressure_event);
+
+    Serial.print(F("Temperature = "));
+    Serial.print(temp_event.temperature);
+    Serial.print(" °C | ");
+
+    Serial.print(F("Pressure = "));
+    Serial.print(pressure_event.pressure);
+    Serial.println(" hPa");
+}
+
+

src/sensors/BmpSensor.h

@@ -0,0 +1,28 @@
+#ifndef NEW_CLIMTE_GO_BMPSENSOR_H
+#define NEW_CLIMTE_GO_BMPSENSOR_H
+
+#include "Sensor.h"
+#include "Adafruit_BMP280.h"
+
+class BmpSensor : public Sensor {
+private:
+    Adafruit_BMP280 bmp; // use I2C interface
+    Adafruit_Sensor *bmp_temp = bmp.getTemperatureSensor();
+    Adafruit_Sensor *bmp_pressure = bmp.getPressureSensor();
+
+public:
+    BmpSensor();
+
+    void sample() override;
+
+    void enableStandbyMode() override;
+
+    void wakeUp() override;
+
+protected:
+    void sensor_setup() override;
+
+};
+
+#endif //NEW_CLIMTE_GO_BMPSENSOR_H
+

src/sensors/Sensor.h

@@ -0,0 +1,23 @@
+#ifndef NEW_CLIMTE_GO_SENSOR_H
+#define NEW_CLIMTE_GO_SENSOR_H
+
+enum class SensorState : unsigned short {
+    AWAKE, ASLEEP
+};
+
+class Sensor {
+public:
+    virtual void sample() = 0;
+
+    virtual void wakeUp() = 0;
+
+    virtual void enableStandbyMode() = 0;
+
+protected:
+    SensorState state = SensorState::ASLEEP;
+
+    virtual void sensor_setup() = 0;
+
+};
+
+#endif //NEW_CLIMTE_GO_SENSOR_H