bluetooth connectivity layer added

2026-07-30 19:46:52 +02:00
parent 310d92f187
commit 5994aee7ad
19 changed files with 1665 additions and 15 deletions
@@ -0,0 +1,76 @@
+import 'dart:async';
+import 'dart:typed_data';
+
+import '../link_transport.dart';
+
+/// Transport ohne echte Gegenstelle (Doku Kommunikationsschicht Abschnitt 2/9):
+/// erlaubt UI- und MSP-Entwicklung ohne Bluetooth-Hardware oder SITL. Bytes,
+/// die die Gegenstelle "gesendet" haette, werden ueber [feed] eingespeist;
+/// [sentData] sammelt, was die App darueber gesendet hat, damit Tests das
+/// pruefen koennen.
+class LoopbackTransport implements LinkTransport {
+  final _incomingController = StreamController<Uint8List>.broadcast();
+  final _stateController = StreamController<LinkState>.broadcast();
+
+  LinkState _state = LinkState.disconnected;
+  LinkErrorReason? _lastErrorReason;
+  String? _lastErrorMessage;
+
+  /// Alle bisher per [send] geschickten Bytes, in Reihenfolge.
+  final List<Uint8List> sentData = [];
+
+  @override
+  Stream<Uint8List> get incoming => _incomingController.stream;
+
+  @override
+  Stream<LinkState> get state => _stateController.stream;
+
+  @override
+  LinkErrorReason? get lastErrorReason => _lastErrorReason;
+
+  @override
+  String? get lastErrorMessage => _lastErrorMessage;
+
+  /// Simuliert eingehende Bytes von der Gegenstelle (z.B. aufgezeichnete
+  /// MSP-Antworten, Doku Abschnitt 9).
+  void feed(Uint8List data) => _incomingController.add(data);
+
+  /// Simuliert einen Verbindungsfehler, z.B. um Fehlerbehandlung in der
+  /// Oberflaeche ohne Hardware zu testen.
+  void simulateError(LinkErrorReason reason, [String? message]) {
+    _lastErrorReason = reason;
+    _lastErrorMessage = message;
+    _setState(LinkState.error);
+  }
+
+  @override
+  Future<void> connect() async {
+    _lastErrorReason = null;
+    _lastErrorMessage = null;
+    _setState(LinkState.connecting);
+    _setState(LinkState.connected);
+  }
+
+  @override
+  Future<void> disconnect() async {
+    _setState(LinkState.disconnected);
+  }
+
+  @override
+  Future<void> send(Uint8List data) async {
+    sentData.add(data);
+  }
+
+  @override
+  void dispose() {
+    _incomingController.close();
+    _stateController.close();
+  }
+
+  void _setState(LinkState next) {
+    _state = next;
+    if (!_stateController.isClosed) _stateController.add(next);
+  }
+
+  LinkState get currentState => _state;
+}