57 lines
1.5 KiB
Dart
57 lines
1.5 KiB
Dart
import 'dart:async';
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import 'dart:typed_data';
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import 'package:flutter_bluetooth_serial/flutter_bluetooth_serial.dart';
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/// Wraps flutter_bluetooth_serial for SPP/RFCOMM Classic BT.
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class BtService {
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BluetoothConnection? _connection;
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final StreamController<Uint8List> _rawFrameController =
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StreamController<Uint8List>.broadcast();
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bool get isConnected => _connection?.isConnected ?? false;
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Stream<Uint8List> get rawStream => _rawFrameController.stream;
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Future<List<BluetoothDevice>> getPairedDevices() async {
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return FlutterBluetoothSerial.instance.getBondedDevices();
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}
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Future<void> connect(BluetoothDevice device) async {
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if (_connection != null) {
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await disconnect();
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}
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_connection = await BluetoothConnection.toAddress(device.address);
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_connection!.input!.listen(
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(Uint8List data) {
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if (!_rawFrameController.isClosed) {
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_rawFrameController.add(data);
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}
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},
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onDone: () {
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_rawFrameController.addError('BT connection closed');
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},
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onError: (Object e) {
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_rawFrameController.addError(e);
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},
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);
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}
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Future<void> write(Uint8List data) async {
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if (_connection?.isConnected ?? false) {
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_connection!.output.add(data);
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await _connection!.output.allSent;
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}
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}
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Future<void> disconnect() async {
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await _connection?.close();
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_connection = null;
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}
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void dispose() {
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disconnect();
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_rawFrameController.close();
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}
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}
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