some housekeeping

Kconfig

@@ -63,15 +63,31 @@ config VECTOR_FOLLOW_TRACK_RATE
 	  This option will turn the vector from line into curve.
 	  This is of course be more computationaly expensive.
 
+config AIRCRAFT_RHOMBUS_RADIUS
+	int "Radius of rhombus or aircraft icon" 
+	range 0 65535
+	default 8
+
 config CHARACTER_SPACING
 	int "Spacing between character in pixels"
-	range 1 255
+	range 0 255
 	default 1
 
+config X_TEXT_OFFSET
+	int "X offset of text from aircraft"
+	range 0 65535
+	default 10
+
 config NO_CALLSIGN_IDENTIFICATION
 	string "Callsign used for aircraft with unknown callsign"
 	default "UNK"
 
+config EXTRA_INFO
+	bool "Enable extra information on top of the screen"
+	default 1
+	help
+	  Show information like number of tracked aircraft on top of the screen
+
 comment "Receiver configuration"
 
 config FALLBACK_LAT

src/main.cpp

@@ -94,6 +94,11 @@ int main() {
         nlohmann::json aircraft = net::http_get_json(
             std::format("{}/aircraft.json", CONFIG_BASE_URL));
         if (aircraft != nullptr) {
+#ifdef CONFIG_EXTRA_INFO
+          font::puts(
+              std::format("Tracking {} aircraft", aircraft["aircraft"].size()),
+              0, 0, {0xff, 0xff, 0xff});
+#endif
           for (nlohmann::json &craft : aircraft["aircraft"]) {
 
             uint32_t altitude;
@@ -194,7 +199,7 @@ int main() {
                            0.0f, static_cast<float>(UINT16_MAX)),
                 color);
 #endif
-              draw::rhombus(x_center, y_center, 8 /*TODO: remove magic*/,
+              draw::rhombus(x_center, y_center, CONFIG_AIRCRAFT_RHOMBUS_RADIUS,
                             color);
 
               {
@@ -207,8 +212,9 @@ int main() {
                   callsign = CONFIG_NO_CALLSIGN_IDENTIFICATION;
                 }
                 // print some info
-                font::puts(callsign, x_center + 10 /*TODO: remove magic*/,
+                font::puts(callsign, x_center + CONFIG_X_TEXT_OFFSET,
-                           y_center, color);
+                           y_center - (FONT_HEIGHT + CONFIG_CHARACTER_SPACING),
+                           color);
                 font::puts(std::to_string(static_cast<uint16_t>(
 #ifdef CONFIG_METRIC
                                speed
@@ -217,13 +223,10 @@ int main() {
 #endif
                                )) +
                                SPEED_UNIT,
-                           x_center + 10 /*TODO: remove magic*/,
+                           x_center + CONFIG_X_TEXT_OFFSET, y_center, color);
-                           y_center + FONT_HEIGHT + CONFIG_CHARACTER_SPACING,
-                           color);
                 font::puts(std::to_string(altitude) + ALTITUDE_UNIT,
-                           x_center + 10 /*TODO: remove magic*/,
+                           x_center + CONFIG_X_TEXT_OFFSET,
-                           y_center +
+                           y_center + (FONT_HEIGHT + CONFIG_CHARACTER_SPACING),
-                               (FONT_HEIGHT + CONFIG_CHARACTER_SPACING) * 2,
                            color);
               }
             } catch (...) {