roshano_boxModule/services/serialPortService.js

import { SerialPort } from 'serialport'
import res from "express/lib/response.js";
import { autoDetect } from '@serialport/bindings-cpp'




async function serialPortList(req, res) {

  SerialPort.list()
      .then((pathsList) => {
        console.log('Available serial ports:');
        for (const path of pathsList) {
          const serialport = new SerialPort({ path, baudRate: 9600, autoOpen: false, }, function (err) {
            if (err) {
              return console.log('Error: ', err.message);
            }
          })

          const buff = Buffer.allocUnsafe(4);
          buff.writeUInt8(`#0${req.params.id}$`);

          serialport.write(buff)
        }
      })
      .catch((error) => {
        console.error('Error listing serial ports:', error);
      });
}

async function serialPort(req, res) {
  const buff = Buffer.allocUnsafe(4);
  buff.writeUInt8(`#0${req.params.id}$`);

  const result = await serialport.write(buff)

  res.send(result)

  // serialport.open(function (err) {
  //   if (err) {
  //     return console.log('Error opening port: ', err.message);
  //   }

  //   // Because there's no callback to write, write errors will be emitted on the port:
  //   serialport.write('main screen turn on');
  // })

  // serialport.on('error', function (err) {
  //   console.log('Error: ', err.message);
  // })

  // serialport.on('readable', function () {
  //   console.log('Data:', serialport.read());
  // })

  // serialport.on('data', function (data) {
  //   console.log('Data:', data);
  // })
}

export default serialPortList