I'm using node.js SerialPort in electron for raspberry pi 4. https://serialport.io/docs/guide-cli#serialport-terminal
I wanna change parameters portname, dataBits, stopBits, parity etc... in port. But I couldn't find a way to do that.
Only one thing I know baudrate change is port.update() but I wanna know something else.
here is renderer.js
var portname,
baudrate,
dataBits,
stopBits,
parity;
const serialport = require('serialport');
const port = new serialport('COM4', {
// baudRate: baudrate,
baudRate: 9600,
dataBits: 7,
stopBits: 2,
parity: "none",
lock: false,
});
document.getElementById('openBtn').addEventListener('click', () => {
// port.update is well done!
// but how can I change something else?
port.update({baudRate: baudrate}, err => {
if(err) console.log('err!');
else console.log(baudrate);
})
})
// When index.html is loading this function is auto loading
// for change port's parameters
// this parameters are coming from setting.html
function getSerialInfo() {
if (localStorage.getItem('serialInfo')) {
var message = localStorage.getItem('serialInfo');
var serialInfo = JSON.parse(message);
portname = stringify(serialInfo.portname);
baudrate = parseInt(serialInfo.baudrate);
dataBits = serialInfo.databits
}
}I solved this problem using global declaration and generate new serialport when button is clicked Reference this blog https://it-jm.tistory.com/34