50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
import { SerialPort } from 'serialport';
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import { InterByteTimeoutParser } from '@serialport/parser-inter-byte-timeout';
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import config from './config.js';
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import sendMsg from './ipcRendererManager';
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import NMEAHandler from './api/NMEAHandler';
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const DEFAULT_BAUDRATE = 115200;
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const getSerialPortConstructorArguments = (ports) => {
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// 很多电脑自带COM1接口，过滤掉COM1口
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ports = ports.filter((port) => port.path != 'COM1');
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if (ports.length == 0) return;
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const serialport = config.get('serialport');
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const path = ( serialport && serialport.path ) ? serialport.path : ports[0].path;
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const baudRate = ( serialport && serialport.baudRate ) ? serialport.baudRate : DEFAULT_BAUDRATE;
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return { path, baudRate };
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};
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const openSerialport = (ports) => {
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try {
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const constructorArguments = getSerialPortConstructorArguments(ports);
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if (!constructorArguments) {
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console.error('设备未连接');
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return;
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}
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const { path, baudRate } = constructorArguments;
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const serialPort = new SerialPort({ path, baudRate });
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const parser = serialPort.pipe(new InterByteTimeoutParser({interval: 300}));
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NMEAHandler.on('received' , (nmeaStr) => {
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sendMsg('NMEA_RECEIVED', nmeaStr);
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});
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NMEAHandler.on('handled' , (nmeaObj) => {
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sendMsg('NMEA_HANDLED', JSON.stringify(nmeaObj));
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});
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parser.on('data', (data) => NMEAHandler.handle(data.toString()));
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} catch (error) {
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console.error(error);
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}
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};
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SerialPort.list().then(
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ports => openSerialport(ports),
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err => console.error(err)
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);
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