• SerialPort Version: 6.2.0

• NodeJS Version: N/A

• Operating System and Hardware Platform: N/A

• Have you checked the right version of the api docs?: N/A

• Are you having trouble installing and you checked the Installation Special Cases docs? N/A

• Are you using Electron and have you checked the Electron Docs?: N/A

I have a device which is only intermit

Nice work--very helpful!
May I suggest that you include a note regarding the need to Registering Your Service. (Perhaps in the Readme.md or the wiki, which should probably be linked in the readme.md)

When I added the code to "my" app (via adding an app dependency of
implementation 'com.github.felHR85:UsbSerial:6.1.0
I found that the UsbService was not actively called until I added
`

I clone source code from github and test print "examples/image.js" is not working

It error TypeError: printer.align(...).image(...).image is not a function

It would be very useful to add this to the doc or tutorial, there's a lot on how to build the library itself, but when it comes to compile a program I couldn't find how.