We are looking for a virtual USB link simulator; this program or service should link a virtual COM port to an application which accepts only USB as data link.
The virtual COM port is VSPE from Eterlogic.
The purpose is to make a serial data link between this virtual port and an application that expects data from a USB stick. Instead of the stick (recognized as HID) the program should get serial data from the virtual COM port (RS-232) presented as a virtual USB connection.
What do you mean "Accepts only USB as data link" ?
HID is a standard Device Class. It contains some standardized "Usage tables" (e.g. Mouse, Keyboard, Monitor control).
Most Operating Systems know how to handle HID and a number of Usage table. Connecting such a device will result with the OS exporting an appropriate device (Keyboard).
Since you can register with HID in user-space in Windows (for a new Class Driver implementation, one needs to create a full driver). Many manufacturers are "riding" HID's back to create custom protocols on top of it.
Does your application interact with a HID device that exports one of the standard usage tables ? (http://www.usb.org/developers/hidpage/)
Does your application register on top of HID and parse the reports itself ?
Does your application connect to 3d party driver already installed on your OS ?
Not enough space to post this in comments