Hi,
I am going through documentation available on Winusb and it says that
Winusb shoud be used when "the device is accessed by only a single
application".

My question is

1) if i use multiple instances of same application to communicate with
different intances of same device(i.e. many boards of same kind
connect to PC via hub) , can i use winusb.

2) if my application communicates with different intances of same
device(i.e. many boards of same kind connect to PC via hub) .
Communication with each instance happens in separate thread. Can i use
WinUsb.

3) Can i use WinUSB in both case

Thanks for an answer

-Anshul

WinUSB grants exclusive access to a particular device. So you can have N
instances of your application each talking to a different device. You can
have a single application talking to N devices. You can even have N
applications talking to one device IF they open it at different times. You
cannot have N applications all talking to one device at the same time.

If you need the last option then I'd suggest writing a UMDF driver to load
on the device to interleave commands from multiple applications to the one
device.

-p

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