var http = require('http'); // Import Node.js core module
const SerialPort = require('serialport'); //https://serialport.io/docs/guide-usage
const Readline = require('@serialport/parser-readline');
const port = new SerialPort('COM4', { baudRate: 9600 });
const parser = port.pipe(new Readline());// Read the port data
port.on("open", () => {
console.log('serial port open');
});
// Open errors will be emitted as an error event
port.on('error', function(err) {
console.log('Error: ', err.message)
})
parser.on('data', data =>{
console.log(data);
});
var server = http.createServer(function (req, res) { //create web server
if (req.url == '/') { //check the URL of the current request
port.write('testing testing hello ben\n', (err) => {
if (err) {
return console.log('Error on write: ', err.message);
}
});
// set response header
res.writeHead(200, { 'Content-Type': 'text/html' });
// set response content
res.write('<html><body><p>Sending message via serial!</p></body></html>');
res.end();
}
else
res.end('Invalid Request!');
});
server.listen(5000); //6 - listen for any incoming requests
console.log('Node.js web server at port 5000 is running..')