Unable to close serial port in nodejs

Question

I'm using node-serialport available here. Open the port and reading works very well, however I am unable to close the port.

I use the following code for that:

myserialport.on('close', function (err) {
    console.log('port closed', err);  
});

The callback function is never executed (no console output). Can anyone, please show me the way?

I would like to be able to close one port and open another if needed or just close the port if user changes the page.

Jan

Answer 1

You can use the .close() method to instruct the serial port to close:

myserialport.close(function (err) {
    console.log('port closed', err);
});

.on('close') allows you to add the function as a listener of the 'close' event. But, it will simply wait for the event to occur (to be emitted) rather than instruct it to be done.