nodejs调用SerialPort简单实例

缺乏、安全感 2023-10-13 19:21 11阅读 0赞

// This file is required by the index.html file and will
    // be executed in the renderer process for that window.
    // All of the Node.js APIs are available in this process.
    
    const { SerialPort } = require('serialport')
    // let serialportgsm = require('serialport-gsm')
    
    // const tableify = require('tableify')
    
    // async function listSerialPorts() {
    //   await SerialPort.list().then((ports, err) => {
    //     if(err) {
    //       document.getElementById('error').textContent = err.message
    //       return
    //     } else {
    //       document.getElementById('error').textContent = ''
    //     }
    //     console.log('ports', ports);
    
    //     if (ports.length === 0) {
    //       document.getElementById('error').textContent = 'No ports discovered'
    //     }
    
    //     tableHTML = tableify(ports)
    //     document.getElementById('ports').innerHTML = tableHTML
    //   })
    // }
    
    // function listPorts() {
    //   listSerialPorts();
    //   setTimeout(listPorts, 2000);
    // }
    
    // // Set a timeout that will check for new serialPorts every 2 seconds.
    // // This timeout reschedules itself.
    // setTimeout(listPorts, 2000);
    
    // listSerialPorts()
    
    const allPorts = []
    
    async function listPorts(){
      await SerialPort.list().then((ports, err) => {
        if(err){
          document.getElementById('error').textContent = err.message
          return
        }else{
          document.getElementById('error').textContent = ''
        }
        if (ports.length === 0){
          document.getElementById('error').textContent = 'No ports discovered'
          return
        }
        // ports.forEach(port => {
          // console.log(port.path)
          gsmPort = new SerialPort({
            path: "COM33",
            baudRate: 115200,
            autoOpen: false
          })
          gsmPort.open(function (err){
            if(err){
              console.log('打开端口失败:',err.message)
            }
          })
          gsmPort.write('at+cnmi?\r\n')
          gsmPort.on('readable', function () {
            console.log(gsmPort.path,' readable:', gsmPort.read())
          })
          let recedata = ''
          gsmPort.on('data', function (data) {
            const rece = data.toString()
            recedata += rece
            console.log('Data:', recedata)
          })
          gsmPort.on('open', function(){
            console.log('port opened');
          })
        });
      // })
    }
    
    function gsmread(){
    
    }
    
    document.getElementById('findCom').addEventListener('click', listPorts)

代码是在electron环境下执行的，所以有node代码，也有document DOM元素.

仅供参考，如有需要，私信联系。

xObP8s/gudi/zrPMoaJKU7K5u7e+s7/Os8yhokpBVkHP4LnYv86zzMjn0OjSqtKyv8nS1MGqz7VRUaGjDQoNCtf31d8gUVEgNDA0NTQwMjI5