// const { SerialPort } = require('serialport')

// // Create a port
// const port = new SerialPort({
//   path: 'COM7',
//   baudRate: 9600,
// })
// port.on('readable', function () {
//     console.log('Data:', port.read())
//   })
  
//   // Switches the port into "flowing mode"
//   port.on('data', function (data) {
//     console.log('Data:', data.toString('UTF8'))
//   })

const { SerialPort } = require('serialport')
const { ReadlineParser } = require('@serialport/parser-readline')
const http = require('node:http');

const port = new SerialPort({ path: 'COM7', baudRate: 9600 })

var value_arduino = "";

const parser = port.pipe(new ReadlineParser({ delimiter: '\r\n' }))
parser.on('data', (data=> {
    if (value_arduino != data) {
        console.log(data);
    }
    value_arduino=data;
}));

// Create a local server to receive data from
const server = http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'application/json' });
  res.end(value_arduino);
})
server.listen(2048);