healthrian_ble_interface 1.16.0
healthrian_ble_interface: ^1.16.0 copied to clipboard
Healthrian BLE interface for multiple devices
import 'package:example/module/module.dart';
import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
import 'package:flutter_mobx/flutter_mobx.dart';
import 'package:healthrian_ble_interface/healthrian_ble_interface.dart';
import 'package:rxdart/rxdart.dart';
void main() {
runApp(const MyApp());
}
class Test extends StatelessObserverWidget {
const Test({super.key});
@override
Widget build(BuildContext context) {
return const Placeholder();
}
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(
// showPerformanceOverlay: true,
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({
super.key,
});
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final _module = WearECG();
late final _ble = _module.ble;
@override
Widget build(BuildContext context) {
// return SafeArea(
// child: Scaffold(
// floatingActionButton: Column(
// mainAxisAlignment: MainAxisAlignment.end,
// crossAxisAlignment: CrossAxisAlignment.end,
// children: [
// FloatingActionButton(
// onPressed: () async {
// final a = await WearECG().ble.findConnectedDevices();
// print(a);
// },
// ),
// FloatingActionButton(
// onPressed: () async {
// final a = await WearECG().ble.findScannedDevices();
// print(a);
// },
// ),
// FloatingActionButton(
// onPressed: () async {
// WearECG().ble.connectAndRegister();
// // final a = await WearECG().ble.findScannedDevices();
// // a.first.device.connect();
// },
// ),
// FloatingActionButton(
// onPressed: () async {
// WearECG().ble.disconnectDevice();
// // final a = await WearECG().ble.findConnectedDevices();
// // a.first.disconnect();
// },
// ),
// ],
// ),
// ),
// );
return Scaffold(
body: Center(
child: Observer(
builder: (context) {
return SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
StreamBuilder(
stream: WinBle.connectionStream,
builder: (context, snapshot) {
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.connection,
builder: (context, snapshot) {
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: () async* {
final stream = Stream.periodic(33.ms,
(i) => [for (var j = 0; j < 9; j++) i * 9 + j])
// final stream = _ble.streams.convertedEcg
// ?.map((event) => event[0])
.timeInterval()
.pairwise()
.flatMap(
(value) => Stream.fromIterable(value.first.value)
.interval(
Duration(
milliseconds:
value.last.interval.inMilliseconds ~/
value.first.value.length),
)
.delay(value.first.interval),
);
// var prev = -1;
// if (stream == null) return;
await for (final s in stream) {
yield s;
// if (prev > s) print('$prev $s');
// prev = s;
}
}(),
builder: (context, snapshot) {
// if (snapshot.hasData) return const SizedBox();
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.convertedEcg
?.map((event) => event[0])
.timeInterval()
.pairwise()
.flatMap(
(value) => Stream.fromIterable(value.first.value)
.interval(
Duration(
milliseconds:
value.last.interval.inMilliseconds ~/
value.first.value.length),
)
.delay(value.first.interval),
)
.timeInterval(),
builder: (context, snapshot) {
// if (snapshot.hasData) return const SizedBox();
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.plotRTEcg?.pairwise(),
builder: (context, snapshot) {
final data = snapshot.data ?? [];
if (data.isEmpty) return const SizedBox();
final first = data[0];
final second = data[1];
// print('${first?.pivot} ${second?.pivot}');
return SizedBox(
height: 200,
child: LineChart(
LineChartData(
lineBarsData: [
LineChartBarData(
spots: first?.l2 ?? [],
),
],
),
).animate().swap(
builder: (context, child) {
return LineChart(
LineChartData(
lineBarsData: [
LineChartBarData(
spots: second?.l2 ?? [],
),
],
),
);
},
duration: 36.ms,
),
);
// print(snapshot.data);
// return Text('${second.value[0] - first.value[0]}');
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.battery,
builder: (context, snapshot) {
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.tap,
builder: (context, snapshot) {
return Text(snapshot.data.toString());
},
),
StreamBuilder(
stream: _ble.streams.leadStateEcg,
builder: (context, snapshot) {
return Text(snapshot.data.toString());
},
),
],
),
);
},
),
),
floatingActionButton: Column(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
// FloatingActionButton(
// onPressed: () async {
// await WinBle.connect('cc:17:8a:a0:2a:18');
// await WinBle.disconnect('cc:17:8a:a0:2a:18');
// },
// ),
FloatingActionButton(
onPressed: _ble.connectAndRegister,
child: const Icon(Icons.bluetooth),
),
FloatingActionButton(
onPressed: _module.ecg?.start,
child: const Icon(Icons.play_arrow),
),
FloatingActionButton(
onPressed: _module.ecg?.stop,
child: const Icon(Icons.stop),
),
FloatingActionButton(
onPressed: _ble.disconnectDevice,
child: const Icon(Icons.bluetooth_disabled),
),
FloatingActionButton(
onPressed: () {
var prev = 0.0;
_ble.streams.sampleEcg?.timeInterval().listen(
(event) {
if (prev > event.value.first) print('$prev $event');
// print(event);
prev = event.value.first;
},
onDone: () => print('------------------'),
);
},
),
],
),
);
}
}