gps manipulations tailored to sim7600h hat

pi/ui/lib/widgets/gps_compass.dart

@@ -4,14 +4,16 @@ import '../theme/app_theme.dart';
 
 class GpsCompass extends StatelessWidget {
   final double? heading;
+  final String? gpsState; // "acquiring", "fix", "lost"
 
-  const GpsCompass({super.key, this.heading});
+  const GpsCompass({super.key, this.heading, this.gpsState});
 
   bool get _hasSignal => heading != null;
+  bool get _isAcquiring => gpsState == 'acquiring';
 
   String get _displayHeading {
-    if (!_hasSignal) return 'N/A'; // Just make it clear; redundant anyways, this only gets called when _hasSignal
-    return '${(heading! % 360).round()}'; // No need for the degree symbol
+    if (!_hasSignal) return 'N/A';
+    return '${(heading! % 360).round()}';
   }
 
   String get _compassDirection {
@@ -56,7 +58,7 @@ class GpsCompass extends StatelessWidget {
           child: FittedBox(
             fit: BoxFit.contain,
             child: Text(
-              _hasSignal ? "${_displayHeading} ${_compassDirection}" : "N/A",
+              _hasSignal ? "${_displayHeading} ${_compassDirection}" : (_isAcquiring ? "ACQ" : "N/A"),
               style: TextStyle(
                 fontSize: 80,
                 color: theme.subdued,