healthrian_ble_support_for_p30 3.0.0

Healthrian BLE support library for the Hativ P30 (6-channel ECG).

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:healthrian_ble_support_for_p30/healthrian_ble_support_for_p30.dart';
import 'package:healthrian_visualization_support/healthrian_visualization_support.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await filter.waitForCompletion();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        appBarTheme: AppBarTheme(
          backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        ),
        useMaterial3: true,
      ),
      home: const TesterView(),
    );
  }
}

class TesterView extends StatefulWidget {
  const TesterView({super.key});

  @override
  State<TesterView> createState() => _TesterViewState();
}

class _TesterViewState extends State<TesterView> {
  final _manager = DeviceManager();
  late final _module = _manager.module;

  String? _serialNumber;
  String? _firmware;

  // The P30 power-on sequence — set mode plus the 2 s 0xFF keep-alive that
  // stops the device sleeping — is declared on the module's commands and run
  // by TransportModule.powerOn, which connectAndRegister triggers. Nothing to drive
  // from the view.

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SingleChildScrollView(
        child: Column(
          children: [
            ConnectionMonitor(module: _module),
            BatteryMonitor(module: _module),
            HeartRateMonitor(module: _module),
            EcgMonitor(
              module: _module,
              isFiltered: true,
              // Show only the 2 physical leads (L1, L2); hide channels 2-11.
              // (P30 also derives L3/aVR/aVL/aVF — change to
              // `[for (var i = 6; i < 12; i++) i]` to show all 6.)
              ignoreChannels: [for (var i = 2; i < 12; i++) i],
            ),
            // Left on the default diagram: the P30 wears the four limb
            // electrodes, and the six chest circles it does not have are drawn
            // inactive from its LeadSet rather than sitting on filler values.
            // LeadstateStyle.jv6 draws the four alone if that is wanted instead.
            LeadstateMonitor(module: _module),
            InkWell(
              onTap: () async {
                final value = await _module
                    .ble.points[Characteristics.SERIAL_NUMBER]
                    ?.read();
                setState(() => _serialNumber = String.fromCharCodes(value ?? []));
              },
              child: Text('serial number: $_serialNumber'),
            ),
            InkWell(
              onTap: () async {
                final value = await _module
                    .ble.points[Characteristics.FIRMWARE_VERSION]
                    ?.read();
                setState(() => _firmware = String.fromCharCodes(value ?? []));
              },
              child: Text('firmware: $_firmware'),
            ),
            Observer(
              builder: (context) => StreamBuilder<dynamic>(
                stream: _module.ble.streams.ecg.meta.raw,
                builder: (context, snapshot) => Text('${snapshot.data}'),
              ),
            ),
          ],
        ),
      ),
      floatingActionButton: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          // connect / start / pause / stop / disconnect. Power-on and the
          // keep-alive ride along with connectAndRegister / disconnectDevice.
          ControlPanel(module: _module),
        ],
      ),
    );
  }
}