Synheart Focus - Dart/Flutter SDK

dependencies:
  synheart_focus: ^0.0.1

flutter pub get

import 'package:synheart_focus/synheart_focus.dart';

void main() async {
  // Initialize the focus engine
  final engine = FocusEngine(
    config: const FocusConfig(
      windowSeconds: 60,  // 60-second window
      stepSeconds: 5,     // 5-second step
      minRrCount: 30,
    ),
  );

  // Initialize with ONNX model
  await engine.initialize(
    modelPath: 'assets/models/Gradient_Boosting.onnx',
    backend: 'onnx',
  );

  // Subscribe to focus updates
  engine.onUpdate.listen((result) {
    print('Focus Score: ${result.focusScore}');
    print('Focus State: ${result.focusState}');
    print('Confidence: ${result.confidence}');
  });

  // Provide HR data (BPM) - inference happens automatically when window is ready
  await engine.inferFromHrData(
    hrBpm: 72.0,
    timestamp: DateTime.now(),
  );
}

import 'package:synheart_wear/synheart_wear.dart';
import 'package:synheart_focus/synheart_focus.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // Initialize SynheartWear SDK
  final synheartWear = SynheartWear(
    config: SynheartWearConfig.withAdapters({
      DeviceAdapter.appleHealthKit,
    }),
  );
  await synheartWear.requestPermissions(
    permissions: {PermissionType.heartRate},
  );
  await synheartWear.initialize();

  // Initialize Focus Engine
  final focusEngine = FocusEngine(
    config: const FocusConfig(
      windowSeconds: 60,
      stepSeconds: 5,
      minRrCount: 30,
    ),
  );
  await focusEngine.initialize(
    modelPath: 'assets/models/Gradient_Boosting.onnx',
    backend: 'onnx',
  );

  // Stream HR data from wearable and feed to focus engine
  synheartWear.streamHR(interval: const Duration(seconds: 1)).listen((metrics) {
    final hr = metrics.getMetric(MetricType.hr);
    if (hr != null) {
      focusEngine.inferFromHrData(
        hrBpm: hr.toDouble(),
        timestamp: DateTime.now(),
      ).then((result) {
        if (result != null) {
          print('Focus State: ${result.focusState}');
          print('Focus Score: ${result.focusScore}');
        }
      });
    }
  });
}