109 lines
2.8 KiB
Dart
109 lines
2.8 KiB
Dart
import 'package:common_utils/common_utils.dart';
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import 'package:flutter_libserialport/flutter_libserialport.dart';
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import 'package:pj_supermarket_cloud/common/index.dart';
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class SerialBase {
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String _name = "未知";
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String _portName = "";
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int _baudRate = 9600;
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int _readTimeout = 500;
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late SerialPort serialClient;
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SerialPortReader? readPort;
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bool isConnect = false;
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set name(String name) {
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_name = name;
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}
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set portName(String portName) {
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_portName = portName;
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}
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set baudRate(int baudRate) {
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_baudRate = baudRate;
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}
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set readTimeout(int readTimeout) {
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_readTimeout = readTimeout;
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}
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/// 定时状态检查只查询目标串口是否存在，不打开端口，避免打断正在进行的硬件业务。
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Future<bool> checkAvailable() async {
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if (isConnect) return true;
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if (ObjectUtil.isEmpty(_portName)) return false;
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try {
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return SerialPort.availablePorts.contains(_portName);
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} catch (e) {
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logger.e(logMsg("检查设备失败error:|$e|"));
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return false;
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}
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}
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/// 子类通过此钩子将实际连接结果同步到统一设备状态，不改变原连接接口。
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void onConnectionStatusChanged(bool connected) {}
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Future<void> connect() async {
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try {
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if (ObjectUtil.isEmpty(_portName)) {
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onConnectionStatusChanged(false);
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return;
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}
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if (isConnect) {
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onConnectionStatusChanged(true);
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return;
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}
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serialClient = SerialPort(_portName);
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if (serialClient.isOpen) {
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serialClient.close();
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}
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bool isOpenRead = serialClient.openReadWrite();
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if (isOpenRead && serialClient.isOpen) {
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SerialPortConfig config = serialClient.config;
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config.baudRate = _baudRate;
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serialClient.config = config;
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isConnect = true;
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onConnectionStatusChanged(true);
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logger.d(logMsg("连接成功"));
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return;
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}
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onConnectionStatusChanged(false);
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} catch (e) {
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onConnectionStatusChanged(false);
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logger.e(logMsg("连接失败error:|$e|"));
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}
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}
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Future<void> listen(Function(List<int>) fc) async {
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if (isConnect == false) return;
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readPort = SerialPortReader(serialClient, timeout: _readTimeout);
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if (ObjectUtil.isEmpty(readPort)) return;
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logger.d(logMsg("开始监听串口数据"));
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readPort!.stream.listen((event) async {
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// logger.w(logMsg("监听串口数据:event:|$event|string:${bytesToString(event)}"));
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fc(event);
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});
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}
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void readerClose() {
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if (ObjectUtil.isNotEmpty(readPort)) {
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readPort!.close();
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readPort = null;
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}
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}
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void close() {
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if (isConnect == true) {
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serialClient.close();
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serialClient.dispose();
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isConnect = false;
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}
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}
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String logMsg(String msg) {
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return "串口设备|$_name|$msg";
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}
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}
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