LUFA USB CDC - connection with serial application fails after disconnect and reconnect about lufa

[abcminiuser]

Hi Urly, did you ever figure this one out?

USB to Serial adapters on Windows can use of of several protocols; the CDC-ACM that is implemented by LUFA, and/or proprietary protocols such as those used by FTDI. The CDC-ACM standard driver in Windows has trouble with port naming; if a port is open when a device disappears and re-appears, it will (usually) get assigned to a new and unused COM port number.

That's quite annoying behavior as it means on Windows CDC-ACM serial ports don't have stable port names, but as far as I am aware there isn't a good workaround. Third party proprietary drivers and protocols work around this issue, but aren't documented thus aren't implemented in LUFA currently.

[UriyMihailov]

Yeah, sorry, I couldn't find an appropriate solution to this. Seems like it is a PC application problem, so for the time being I'll just have to bear with it or write my own app. Anyway, thank you for the info you provided. I think the issue may be closed for the moment.