move temperature sensor code inside its own class

libraries/Tiny/TemperatureSensor.h

@@ -2,11 +2,11 @@
 
 #include <TinySensor.h>
 
-class TempSensor : public TinySensor {
+class TemperatureSensor : public TinySensor {
 	SensorType sensorType = TEMPERATURE;
 
 public:
-	TempSensor(short id) :
+	TemperatureSensor(short id) :
 		TinySensor(id) {
 	}
 

temp_sensor/include/Dht22Sensor.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <DHT.h>
+#include <TemperatureSensor.h>
+#include "TempSensor.h"
+
+#define TEMP_POSITIVE PIN_B3
+#define DHT_PIN PIN_B4
+
+struct DhtValues {
+	int temperature;
+	int humidity;
+	bool success;
+};
+
+class Dht22Sensor : public TempSensor<DhtValues> {
+    DHT dht = DHT(DHT_PIN, DHT22);
+
+public:
+    Dht22Sensor(short id) :
+        TempSensor(id) {
+    }
+
+    void setup() override {
+        pinMode(TEMP_POSITIVE, OUTPUT);
+        digitalWrite(TEMP_POSITIVE, HIGH);
+        dht.begin();
+        delay(2000);
+    }
+
+    DhtValues readTemp() override {
+        DhtValues dhtValues;
+        float temp = dht.readTemperature();
+        float humid = dht.readHumidity();
+        dhtValues.success = !isnan(temp) && !isnan(humid);
+        dhtValues.temperature = roundf(temp * 10);
+        dhtValues.humidity = roundf(humid * 10);
+        return dhtValues;
+    }
+};

temp_sensor/include/TempSensor.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <TemperatureSensor.h>
+#include <HumiditySensor.h>
+
+template <class T>
+class TempSensor : public TemperatureSensor, public HumiditySensor {
+public:
+    TempSensor(short id) :
+        TemperatureSensor(id), HumiditySensor(id) {
+    }
+
+    virtual void setup() = 0;
+    virtual T readTemp() = 0;
+};

temp_sensor/include/Tmp36Sensor.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "TempSensor.h"
+
+#define TEMP_POSITIVE PIN_B3
+#define TEMP_PIN A2
+
+class Tmp36Sensor : public TempSensor<int> {
+public:
+    Tmp36Sensor(short id) :
+        TempSensor(id) {
+    }
+
+    void setup() override {
+        analogReference(INTERNAL);
+        pinMode(TEMP_POSITIVE, OUTPUT);
+        digitalWrite(TEMP_POSITIVE, LOW);
+    }
+
+    int readTemp() override {
+        digitalWrite(TEMP_POSITIVE, HIGH);
+        delay(10);
+        int reading = analogRead(TEMP_PIN);
+        digitalWrite(TEMP_POSITIVE, LOW);
+
+        float voltage = reading * (1100 / 1024.0);
+        float temperatureC = (voltage - 500) / 10;
+        return roundf(temperatureC * 10);
+    }
+};

temp_sensor/src/temp_sensor.cpp

@@ -1,38 +1,24 @@
 #include <Arduino.h>
-#include <TempSensor.h>
-#include <HumiditySensor.h>
 #include <TinyPower.h>
-#include <DHT.h>
+#include "Dht22Sensor.h"
 
 #define SEND_INTERVAL 37						// 37*8s = ~5min
 #define SEND_VCC_INTERVAL (SEND_INTERVAL*6)		// every half hour
 
 // Pins
-#define TEMP_POSITIVE PIN_B3
 #define SENDER PIN_B2
-#define DHT_PIN PIN_B4
 
-struct DhtValues {
-	int temperature;
-	int humidity;
-	bool success;
-};
 DhtValues readTemp();
 void turnOnDht();
 void turnOffDht();
 
-TempSensor tempSensor = TempSensor(TEMP_SENSOR);
-HumiditySensor humidSensor = HumiditySensor(TEMP_SENSOR);
-DHT dht(DHT_PIN, DHT22);
+TempSensor<DhtValues> &tempSensor = *(new Dht22Sensor(TEMP_SENSOR));
 
 volatile int counter = 0;
 
 void setup() {
 
-	pinMode(TEMP_POSITIVE, OUTPUT);
-	digitalWrite(TEMP_POSITIVE, HIGH);
-	dht.begin();
-	delay(2000);
+	tempSensor.setup();
 
 	TinySwitch::setup(SENDER);
 	TinyPower::setup();
@@ -43,7 +29,7 @@ void loop() {
 	static bool retry = false;
 
 	if (retry || (counter % SEND_INTERVAL == 0)) {
-		DhtValues values = readTemp();
+		DhtValues values = tempSensor.readTemp();
 		if (values.success) {
 			if (counter % SEND_VCC_INTERVAL == 0) {
 				tempSensor.sendTempAndVoltage(values.temperature);
@@ -52,7 +38,7 @@ void loop() {
 				tempSensor.sendTemp(values.temperature);
 			}
 			delay(100);
-			humidSensor.sendHumidity(values.humidity);
+			tempSensor.sendHumidity(values.humidity);
 
 			turnOffDht();
 		}
@@ -64,16 +50,6 @@ void loop() {
 	TinyPower::sleep();
 }
 
-DhtValues readTemp() {
-	DhtValues dhtValues;
-	float temp = dht.readTemperature();
-	float humid = dht.readHumidity();
-	dhtValues.success = !isnan(temp) && !isnan(humid);
-	dhtValues.temperature = roundf(temp * 10);
-	dhtValues.humidity = roundf(humid * 10);
-	return dhtValues;
-}
-
 ISR(WDT_vect) {
 	counter++;
 	if (((counter + 1) % SEND_INTERVAL == 0) || ((counter + 1) % SEND_VCC_INTERVAL == 0)) {