Added AM2302 sensor reading to one of the screens

include/am2302_sensor.h

@@ -0,0 +1,28 @@
+#ifndef AM2302_SENSOR_H
+#define AM2302_SENSOR_H
+
+#include <Arduino.h>
+
+struct Am2302Reading
+{
+  float temperatureC;
+  float humidityPercent;
+  bool valid;
+};
+
+class Am2302Sensor
+{
+public:
+  explicit Am2302Sensor(uint8_t pin);
+
+  void begin();
+  bool update(unsigned long now);
+  Am2302Reading reading() const;
+
+private:
+  uint8_t pin_;
+  unsigned long nextRead_;
+  Am2302Reading reading_;
+};
+
+#endif

include/carousel.h

@@ -15,6 +15,7 @@ public:
   Carousel(Screen *screens, size_t screenCount);
   void draw(U8G2 &u8g2);
   bool consumeDirty();
+  void requestRedraw();
   void nextScreen();
   void update(unsigned long now);
 
@@ -26,4 +27,4 @@ private:
   bool dirty_;
 };
 
-#endif
+#endif

include/screens.h

@@ -3,8 +3,11 @@
 
 #include <U8g2lib.h>
 
+#include "am2302_sensor.h"
+
 void drawScreen1(U8G2 &u8g2);
-void drawScreen2(U8G2 &u8g2);
+void setEnvironmentReading(Am2302Reading reading);
+void drawEnvironmentScreen(U8G2 &u8g2);
 void drawWeatherIconScreen(U8G2 &u8g2);
 
 #endif