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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| import 'dart:io'; | ||
|
|
||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_blue_plus/flutter_blue_plus.dart'; | ||
| import 'package:permission_handler/permission_handler.dart'; | ||
|
|
||
| class GNSSBluetooth extends StatefulWidget { | ||
| const GNSSBluetooth({super.key}); | ||
|
|
||
| @override | ||
| State<GNSSBluetooth> createState() => _GNSSBluetoothState(); | ||
| } | ||
|
|
||
| class _GNSSBluetoothState extends State<GNSSBluetooth> { | ||
| //List baudeRates = [9600, 19200, 38400, 57600, 115200]; | ||
| List baudeRates = [9600, 19200, 38400, 57600, 115200]; | ||
| int? baudeRate; | ||
| List<String> availablePorts = []; | ||
| String selectedPort = ''; | ||
| bool scanning = false; | ||
| bool tested = false; | ||
| bool testing = false; | ||
| var serialPort; | ||
|
|
||
| _getAvailablePorts() { | ||
| return FlutterBluePlus.onScanResults.listen( | ||
| (results) { | ||
| print(results); | ||
| if (results.isNotEmpty) { | ||
| ScanResult r = results.last; // the most recently found device | ||
| print('${r.device.remoteId}: "${r.advertisementData.advName}" found!'); | ||
| availablePorts.add(r.advertisementData.advName); | ||
| setState(() { | ||
| availablePorts = availablePorts.toSet().toList(); | ||
| }); | ||
| } | ||
| }, | ||
| onError: (e) => print(e), | ||
| ); | ||
| } | ||
|
|
||
| _refreshAvailable() async { | ||
| scanning = true; | ||
| await FlutterBluePlus.startScan(timeout: Duration(seconds: 4), androidUsesFineLocation: true); | ||
| scanning = false; | ||
| } | ||
|
|
||
| Future<dynamic> _init() async { | ||
| if (await FlutterBluePlus.isSupported == false) { | ||
| print("Bluetooth not supported by this device"); | ||
| return; | ||
| } | ||
|
|
||
| var status = await Permission.bluetoothScan.status; | ||
| if (status.isDenied) { | ||
| print('denied'); | ||
| } else { | ||
| print('Permitted'); | ||
| } | ||
|
|
||
| // handle bluetooth on & off | ||
| // note: for iOS the initial state is typically BluetoothAdapterState.unknown | ||
| // note: if you have permissions issues you will get stuck at BluetoothAdapterState.unauthorized | ||
| var subscription = FlutterBluePlus.adapterState.listen((BluetoothAdapterState state) async { | ||
| print('BluetoothAdapterState'); | ||
| print(state); | ||
| if (state == BluetoothAdapterState.on) { | ||
| // usually start scanning, connecting, etc | ||
| _getAvailablePorts(); | ||
|
|
||
| print('start Scanning'); | ||
| } else { | ||
| // show an error to the user, etc | ||
| print('ERROR'); | ||
| } | ||
| }); | ||
| print('START _INiT'); | ||
| return; | ||
|
|
||
| // turn on bluetooth ourself if we can | ||
| // for iOS, the user controls bluetooth enable/disable | ||
| if (Platform.isAndroid) { | ||
| await FlutterBluePlus.turnOn(); | ||
| } | ||
|
|
||
| // cancel to prevent duplicate listeners | ||
| subscription.cancel(); | ||
| } | ||
|
|
||
| @override | ||
| void initState() { | ||
| // TODO: implement initState | ||
| super.initState(); | ||
| _init(); | ||
| } | ||
|
|
||
| _testConnection() {} | ||
| _cancelTesting() {} | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Column( | ||
| children: [ | ||
| ListTile( | ||
| title: Text('Serial Ports:'), | ||
| subtitle: Text('Get Information from Device...'), | ||
| trailing: Row( | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: [ | ||
| DropdownButton<String>( | ||
| value: selectedPort, | ||
| onChanged: (String? value) { | ||
| if (value == null) return; | ||
| setState(() { | ||
| selectedPort = value; | ||
| }); | ||
| }, | ||
| items: availablePorts.map<DropdownMenuItem<String>>((dynamic value) { | ||
| return DropdownMenuItem<String>( | ||
| value: value, | ||
| child: Text(value), | ||
| ); | ||
| }).toList(), // Explicitly specify the type | ||
| ), | ||
| IconButton( | ||
| icon: Icon(Icons.refresh), | ||
| onPressed: _refreshAvailable, | ||
| ), | ||
| ], | ||
| )), | ||
| ListTile( | ||
| title: Text('Baud Rate: '), | ||
| subtitle: Text('Get Information from Device...'), | ||
| trailing: DropdownButton<int>( | ||
| value: baudeRate, | ||
| onChanged: (int? value) { | ||
| setState(() { | ||
| baudeRate = value; | ||
| }); | ||
| }, | ||
| items: baudeRates.map<DropdownMenuItem<int>>((dynamic value) { | ||
| return DropdownMenuItem<int>( | ||
| value: value, | ||
| child: Text(value.toString()), | ||
| ); | ||
| }).toList(), // Explicitly specify the type | ||
| ), | ||
| ), | ||
| Row( | ||
| mainAxisAlignment: MainAxisAlignment.end, | ||
| children: [ | ||
| if (testing) | ||
| ElevatedButton( | ||
| onPressed: _cancelTesting, | ||
| child: Text('Cancel testing'), | ||
| ) | ||
| else | ||
| ElevatedButton( | ||
| onPressed: baudeRate != null ? _testConnection : null, | ||
| child: Text('TEST connection'), | ||
| ), | ||
| ], | ||
| ) | ||
| ], | ||
| ); | ||
| } | ||
| } |
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