chafon_h906_rfid 0.0.1 
chafon_h906_rfid: ^0.0.1 copied to clipboard
Flutter plugin for Chafon H906 RFID reader (Android OTG)
import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:chafon_h906_rfid/chafon_h906_rfid.dart';
void main() {
runApp(const MaterialApp(home: H906DemoPage()));
}
class H906DemoPage extends StatefulWidget {
const H906DemoPage({super.key});
@override
State<H906DemoPage> createState() => _H906DemoPageState();
}
class _H906DemoPageState extends State<H906DemoPage> {
final _plugin = ChafonH906Rfid();
bool _busy = false;
bool _connected = false;
String _status = 'Disconnected';
int? _baud;
int? _lastCode;
// Power UI state
int _power = 30; // 0..33 dBm
Map<String, dynamic>? _lastSetPowerResp;
// SINGLE READ state
final _epcCtrl = TextEditingController(); // optional EPC filter (hex)
final _pwdCtrl = TextEditingController(text: '00000000');
int _wordPtrSR = 2;
int _lenSR = 6;
Map<String, dynamic>? _lastReadResp;
String? _lastHex;
// INVENTORY state
bool _invRunning = false;
Map<String, dynamic>? _lastInvResp;
int _session = 0;
int _qValue = 4;
bool _includeTid = false;
// Native -> Dart callbacks via plugin streams
StreamSubscription<Map<String, dynamic>>? _tagSub;
final List<Map<String, dynamic>> _tags = [];
final Set<String> _seen = {};
@override
void initState() {
super.initState();
// Subscribe to plugin streams (onTag & onInventoryStopped)
_tagSub = _plugin.onTag.listen(
(m) {
final epc = (m['epc'] ?? '') as String;
if (epc.isEmpty) return;
if (!mounted) return;
setState(() {
if (_seen.add(epc)) {
final first = Map<String, dynamic>.from(m);
first['count'] = 1;
_tags.add(first);
if (_tags.length > 500) {
// köhnələri at – həm Set, həm List sinxron tut
final removeCount = _tags.length - 500;
for (int k = 0; k < removeCount; k++) {
final removed = _tags.removeAt(0);
final repc = (removed['epc'] ?? '') as String;
if (repc.isNotEmpty) _seen.remove(repc);
}
}
} else {
final i = _tags.indexWhere((e) => e['epc'] == epc);
if (i >= 0) {
final curr = Map<String, dynamic>.from(_tags[i]);
curr['count'] = (curr['count'] ?? 1) + 1;
if (m['rssi'] != null) curr['rssi'] = m['rssi'];
if (m['mem'] != null) curr['mem'] = m['mem'];
_tags[i] = curr;
}
}
});
},
onError: (e) {
// optional: log
},
);
}
@override
void dispose() {
if (_invRunning) {
// səliqəli dayandır, async olsa da gözləməyə ehtiyac yoxdur
_plugin.stopInventory();
}
_tagSub?.cancel();
_epcCtrl.dispose();
_pwdCtrl.dispose();
super.dispose();
}
Future<void> _readSingle() async {
if (!_connected) {
_snack('Əvvəl qoşul: Connect');
return;
}
setState(() => _busy = true);
try {
final resp = await _plugin.readSingleTag(
// wordPtr: _wordPtrSR,
// len: _lenSR,
// password: _pwdCtrl.text.trim(),
// epc: _epcCtrl.text.trim().isEmpty ? null : _epcCtrl.text.trim(),
);
final ok = resp['success'] == true;
setState(() {
_lastReadResp = resp;
_lastHex = ok ? (resp['data']?['hex'] as String?) : null;
});
_snack(ok ? 'Read OK' : 'Read FAIL: code=${resp['code']}');
} on PlatformException catch (e) {
_snack('Read error: ${e.code}');
} catch (e) {
_snack('Read error: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
Future<void> _connect() async {
setState(() => _busy = true);
try {
final resp = await _plugin.connect();
final ok = (resp['success'] == true);
setState(() {
_connected = ok;
_baud = (resp['baud'] as num?)?.toInt();
_lastCode = (resp['code'] as num?)?.toInt();
_status = ok ? 'Connected' : 'Connect failed';
});
_snack(
ok ? 'Qoşuldu (baud: $_baud)' : 'Qoşulma alınmadı (code: $_lastCode)',
);
} on PlatformException catch (e) {
setState(() {
_connected = false;
_status = 'Connect error: ${e.code}';
});
_snack('Xəta: ${e.code}');
} catch (e) {
setState(() {
_connected = false;
_status = 'Connect error';
});
_snack('Connect exception: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
Future<void> _isConnected() async {
setState(() => _busy = true);
try {
final ok = await _plugin.isConnected();
setState(() {
_connected = ok;
_status = ok ? 'Connected' : 'Disconnected';
});
_snack(ok ? 'Bağlantı aktivdir' : 'Bağlantı yoxdur');
} catch (e) {
_snack('isConnected xətası: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
Future<void> _disconnect() async {
setState(() => _busy = true);
try {
final ok = await _plugin.disconnect() ?? true;
setState(() {
_connected = !ok ? _connected : false;
_status = 'Disconnected';
});
_snack(ok ? 'Bağlantı kəsildi' : 'Kəsmək alınmadı');
} catch (e) {
_snack('disconnect xətası: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
Future<void> _applyPower() async {
setState(() => _busy = true);
try {
final resp = await _plugin.setPower(_power);
final ok = resp['success'] == true;
setState(() => _lastSetPowerResp = resp);
_snack(
ok
? 'Power yazıldı: ${resp['data']?['power']} dBm (region=${resp['data']?['region']}, S=${resp['data']?['session']}, Q=${resp['data']?['qValue']})'
: 'Power xətası: code=${resp['code']}',
);
} on PlatformException catch (e) {
_snack('Power yazıla bilmədi: ${e.code}');
} catch (e) {
_snack('Power xətası: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
// INVENTORY
Future<void> _startInventory() async {
if (!_connected) {
_snack('Əvvəl qoşul: Connect');
return;
}
if (_invRunning) {
_snack('Inventory artıq işləyir');
return;
}
setState(() {
_busy = true;
});
try {
final resp = await _plugin.startInventory(
// antenna: 1, // <-- bunu GÖNDƏRMƏ
// session: _session, // S0..S3
// qValue: _qValue, // 3-5 arası yaxşıdır, test üçün 4
// includeTid: _includeTid,
// tidWordPtr: 2,
// tidLen: 6,
//epcFilter: _epcCtrl.text.trim().isEmpty ? null : _epcCtrl.text.trim(),
// scanTime: 50, // <-- 10 azdır; 30-50 ver, test üçün 50 qoy
);
final ok = resp['success'] == true;
setState(() {
_lastInvResp = resp;
_invRunning = ok;
if (ok) {
_tags.clear();
_seen.clear();
}
});
_snack(ok ? 'Inventory başladı' : 'Başlamadı: code=${resp['code']}');
} on PlatformException catch (e) {
_snack('Inventory start error: ${e.code}');
} catch (e) {
_snack('Inventory start error: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
Future<void> _stopInventory() async {
if (!_invRunning) {
_snack('Inventory işləmir');
return;
}
setState(() => _busy = true);
try {
final resp = await _plugin.stopInventory();
final ok = resp['success'] == true;
setState(() {
_lastInvResp = resp;
_invRunning = !ok ? _invRunning : false;
});
_snack(
ok
? 'Inventory dayandırıldı'
: 'Dayandırıla bilmədi: code=${resp['code']}',
);
} on PlatformException catch (e) {
_snack('Inventory stop error: ${e.code}');
} catch (e) {
_snack('Inventory stop error: $e');
} finally {
if (mounted) setState(() => _busy = false);
}
}
void _snack(String msg) {
if (!mounted) return;
ScaffoldMessenger.of(context)
..hideCurrentSnackBar()
..showSnackBar(SnackBar(content: Text(msg)));
}
@override
Widget build(BuildContext context) {
final color = _connected ? Colors.green : Colors.red;
return Scaffold(
appBar: AppBar(title: const Text('Chafon H906 – Demo')),
body: Padding(
padding: const EdgeInsets.all(16),
child: ListView(
children: [
Row(
children: [
Icon(
_connected ? Icons.check_circle : Icons.cancel,
color: color,
),
const SizedBox(width: 8),
Text(
'Status: $_status',
style: TextStyle(fontSize: 16, color: color),
),
],
),
const SizedBox(height: 8),
Row(
children: [
Text('Baud: ${_baud ?? '-'} '),
Text('Last code: ${_lastCode ?? '-'}'),
],
),
const SizedBox(height: 24),
if (_busy) const LinearProgressIndicator(),
const SizedBox(height: 12),
// Connect / Check / Disconnect
Wrap(
spacing: 12,
runSpacing: 12,
children: [
ElevatedButton.icon(
onPressed: _busy ? null : _connect,
icon: const Icon(Icons.usb),
label: const Text('Connect'),
),
ElevatedButton.icon(
onPressed: _busy ? null : _isConnected,
icon: const Icon(Icons.help_outline),
label: const Text('Is Connected?'),
),
ElevatedButton.icon(
onPressed: _busy ? null : _disconnect,
icon: const Icon(Icons.link_off),
label: const Text('Disconnect'),
),
],
),
const Divider(height: 32),
// Power controls
Row(
children: [
const Text('Power (dBm): '),
DropdownButton<int>(
value: _power,
items:
List.generate(34, (i) => i) // 0..33
.map(
(v) =>
DropdownMenuItem(value: v, child: Text('$v')),
)
.toList(),
onChanged: _busy
? null
: (v) => setState(() => _power = v ?? _power),
),
const SizedBox(width: 12),
ElevatedButton.icon(
onPressed: (_busy || !_connected) ? null : _applyPower,
icon: const Icon(Icons.flash_on),
label: const Text('Set power'),
),
],
),
const SizedBox(height: 12),
if (_lastSetPowerResp != null)
Text(
'Son cavab: ${_lastSetPowerResp}',
style: const TextStyle(fontSize: 12, color: Colors.black54),
),
const Divider(height: 32),
// Single Read
const Text(
'Single Read (EPC)',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 8),
Row(
children: [
const Text('WordPtr: '),
DropdownButton<int>(
value: _wordPtrSR,
items:
List.generate(33, (i) => i) // 0..32
.map(
(v) =>
DropdownMenuItem(value: v, child: Text('$v')),
)
.toList(),
onChanged: _busy
? null
: (v) => setState(() => _wordPtrSR = v ?? _wordPtrSR),
),
const SizedBox(width: 16),
const Text('Len: '),
DropdownButton<int>(
value: _lenSR,
items:
List.generate(32, (i) => i + 1) // 1..32
.map(
(v) =>
DropdownMenuItem(value: v, child: Text('$v')),
)
.toList(),
onChanged: _busy
? null
: (v) => setState(() => _lenSR = v ?? _lenSR),
),
],
),
const SizedBox(height: 8),
TextField(
controller: _epcCtrl,
decoration: const InputDecoration(
labelText: 'EPC filter (hex, optional)',
border: OutlineInputBorder(),
hintText: 'Məs: 300833B2DDD9014000000000',
),
inputFormatters: [
FilteringTextInputFormatter.allow(RegExp(r'[0-9a-fA-F]')),
UpperCaseTextFormatter(),
],
),
const SizedBox(height: 8),
TextField(
controller: _pwdCtrl,
decoration: const InputDecoration(
labelText: 'Password (8-hex)',
border: OutlineInputBorder(),
hintText: '00000000',
),
inputFormatters: [
FilteringTextInputFormatter.allow(RegExp(r'[0-9a-fA-F]')),
LengthLimitingTextInputFormatter(8),
UpperCaseTextFormatter(),
],
),
const SizedBox(height: 8),
Row(
children: [
ElevatedButton.icon(
onPressed: (_busy || !_connected) ? null : _readSingle,
icon: const Icon(Icons.nfc),
label: const Text('Read EPC'),
),
const SizedBox(width: 12),
const Expanded(
child: Text(
'Default: EPC wordPtr=2, len=6',
style: TextStyle(color: Colors.black54),
maxLines: 1,
overflow: TextOverflow.ellipsis,
softWrap: false,
),
),
],
),
const SizedBox(height: 12),
if (_lastReadResp != null)
Container(
width: double.infinity,
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
border: Border.all(color: Colors.black12),
borderRadius: BorderRadius.circular(8),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Son oxunuş:',
style: TextStyle(fontWeight: FontWeight.w600),
),
const SizedBox(height: 6),
Text(
'_raw: $_lastReadResp',
style: const TextStyle(
fontSize: 12,
color: Colors.black54,
),
),
const SizedBox(height: 6),
if (_lastHex != null)
SelectableText(
'HEX: $_lastHex',
style: const TextStyle(fontFamily: 'monospace'),
),
],
),
),
const Divider(height: 32),
// Inventory controls
const Text(
'Inventory',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 8),
Wrap(
spacing: 12,
runSpacing: 12,
crossAxisAlignment: WrapCrossAlignment.center,
children: [
Row(
mainAxisSize: MainAxisSize.min,
children: [
const Text('Session:'),
const SizedBox(width: 8),
DropdownButton<int>(
value: _session,
items: const [0, 1, 2, 3]
.map(
(v) =>
DropdownMenuItem(value: v, child: Text('S$v')),
)
.toList(),
onChanged: (_busy || !_connected || _invRunning)
? null
: (v) => setState(() => _session = v ?? _session),
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
const Text('Q:'),
const SizedBox(width: 8),
DropdownButton<int>(
value: _qValue,
items: List.generate(8, (i) => i + 1)
.map(
(v) =>
DropdownMenuItem(value: v, child: Text('$v')),
)
.toList(),
onChanged: (_busy || !_connected || _invRunning)
? null
: (v) => setState(() => _qValue = v ?? _qValue),
),
],
),
Row(
mainAxisSize: MainAxisSize.min,
children: [
Checkbox(
value: _includeTid,
onChanged: (_busy || !_connected || _invRunning)
? null
: (v) =>
setState(() => _includeTid = v ?? _includeTid),
),
const Text('TID də oxu'),
],
),
ElevatedButton.icon(
onPressed: (_busy || !_connected || _invRunning)
? null
: _startInventory,
icon: const Icon(Icons.play_arrow),
label: const Text('Start Inventory'),
),
ElevatedButton.icon(
onPressed: (_busy || !_connected || !_invRunning)
? null
: _stopInventory,
icon: const Icon(Icons.stop),
style: ElevatedButton.styleFrom(
backgroundColor: Colors.redAccent,
),
label: const Text('Stop Inventory'),
),
],
),
const SizedBox(height: 8),
if (_lastInvResp != null) ...[
const Text(
'Inventory cavabı:',
style: TextStyle(fontWeight: FontWeight.w600),
),
const SizedBox(height: 4),
Container(
width: double.infinity,
constraints: const BoxConstraints(
maxHeight: 200,
), // çox uzundursa scroll
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: Colors.grey.shade100,
borderRadius: BorderRadius.circular(8),
border: Border.all(color: Colors.black12),
),
child: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: SelectableText(
const JsonEncoder.withIndent(' ').convert(_lastInvResp),
style: const TextStyle(
fontFamily: 'monospace',
fontSize: 12,
),
),
),
),
const SizedBox(height: 8),
],
Text(
'Unikal tag: ${_tags.length} Ümumi hitlər: ${_tags.fold<int>(0, (p, e) => p + (e['count'] as int? ?? 1))}',
style: const TextStyle(fontSize: 12, color: Colors.black54),
),
const SizedBox(height: 8),
// Inventory results list
if (_tags.isEmpty)
const Text(
'Hələ tag yoxdur...',
style: TextStyle(color: Colors.black54),
)
else
Container(
decoration: BoxDecoration(
border: Border.all(color: Colors.black12),
borderRadius: BorderRadius.circular(8),
),
child: ListView.builder(
shrinkWrap: true,
physics: const NeverScrollableScrollPhysics(),
itemCount: _tags.length,
itemBuilder: (_, i) {
final t = _tags[i];
return ListTile(
dense: true,
leading: const Icon(Icons.label),
title: SelectableText(
(t['epc'] ?? '') as String,
style: const TextStyle(fontFamily: 'monospace'),
),
subtitle: Text(
[
if ((t['mem'] ?? '').toString().isNotEmpty)
'MEM: ${t['mem']}',
if (t['rssi'] != null) 'RSSI: ${t['rssi']}',
if (t['count'] != null) 'Count: ${t['count']}',
].join(' '),
),
);
},
),
),
],
),
),
);
}
}
class UpperCaseTextFormatter extends TextInputFormatter {
@override
TextEditingValue formatEditUpdate(
TextEditingValue oldValue,
TextEditingValue newValue,
) {
return newValue.copyWith(text: newValue.text.toUpperCase());
}
}Metadata
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Metadata
Flutter plugin for Chafon H906 RFID reader (Android OTG)
Repository (GitHub)
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Documentation
License
MIT (license)
Dependencies
flutter, plugin_platform_interface
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