主要版本

src/main/load-serialport.js

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