Added avg speed over time

main/displays/menus/statisticsmenu.cpp

@@ -126,6 +126,12 @@ class EfficiencyText : public virtual espgui::TextInterface {
     }
 };
 
+class AverageSpeedKmhOverTime : public virtual espgui::TextInterface {
+    public: std::string text() const override {
+        return fmt::format("Avg speed: {:.1f} km/h", getAvgKmh());
+    }
+};
+
 class EfficiencyTextColor : public virtual espgui::ColorInterface {
 public:
     int color() const override
@@ -169,6 +175,7 @@ StatisticsMenu::StatisticsMenu()
 //  constructMenuItem<makeComponent<MenuItem, SavedTotalCentimetersText,           DummyAction>>();
     constructMenuItem<makeComponent<MenuItem, CurrentWhUsedText,                   DummyAction>>();
     constructMenuItem<makeComponent<MenuItem, AverageWhUsedText,                   DummyAction>>();
+    constructMenuItem<makeComponent<MenuItem, AverageSpeedKmhOverTime,             DummyAction>>();
     constructMenuItem<makeComponent<MenuItem, EfficiencyText, EfficiencyTextColor, DummyAction>>();
     constructMenuItem<makeComponent<MenuItem, EmptyText,                           DummyAction>>();
     constructMenuItem<makeComponent<MenuItem, StaticText<TEXT_STATSSAVE>,          SaveKilometersAction, StaticMenuItemIcon<&bobbyicons::update>>>();

main/drivingstatistics.cpp

@@ -19,6 +19,11 @@ float getAvgWhPerKm()
     return drivingStatistics.wh_used / (drivingStatistics.meters_driven / 1000.f);
 }
 
+float getAvgKmh()
+{
+    return (drivingStatistics.meters_driven / 1000.) / (drivingStatistics.currentDrivingTime.count() / 1000 / 60 / 60); // (meter / 1000) / (ms / 1000 / 60 / 60)
+}
+
 std::string getEfficiencyClassString()
 {
     const float avgWhPerKm = getAvgWhPerKm();

main/drivingstatistics.h

@@ -19,5 +19,6 @@ extern DrivingStatistics drivingStatistics;
 void initStatistics();
 void calculateStatistics();
 float getAvgWhPerKm();
+float getAvgKmh();
 std::string getEfficiencyClassString();
 uint16_t getEfficiencyClassColor();