Hello!
Does serenum.sys care whether it tries to enumerate devices connected directly to a physical COM port or a virtual COM port (for example via a USB bridge adapter).
The reason I’m asking is that I’m going to write a driver for a PnP capable COM device. It will be connected to the PC either to a COM port or thru a USB to RS232 adapter.
Regards,
Mattias
You can easily answer this yourself. The serenum driver is a sample in the WDK so you can look at the sources to see what it does to enumerate devices. The quick answer is that serenum does not access any hw directly. It uses the public serial IOCTLs to communicate with the device, as described in my blog here http://blogs.msdn.com/doronh/archive/2006/11/13/what-is-the-serial-enumeration-protocol.aspx
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-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Mattias Br?ndstr?m
Sent: Wednesday, November 28, 2007 6:47 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] serenum.sys and vistual COM ports
Hello!
Does serenum.sys care whether it tries to enumerate devices connected directly to a physical COM port or a virtual COM port (for example via a USB bridge adapter).
The reason I’m asking is that I’m going to write a driver for a PnP capable COM device. It will be connected to the PC either to a COM port or thru a USB to RS232 adapter.
Regards,
Mattias
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