I'm trying to do the same. I want to develop my own application on MATLAB to communicate with the usb dongle through HCI commands via a serial connection. Before doing that I tried using Realterm to send any command but I couldnt enter anything in the terminal. I've looked at the provided examples including those developed in Linux but couldn't find any clue why I dont get a response from the dongle. The only two applications that work are BTool and BleHealthDemo (which is based on BTool) . I looked at the BleHealthDemo code but didnt get any helpful hint.
I feel there is something has to be done to initialise the connection to the usb dongle under Windows 7. I looked at the JavaSimplePeripheral code and it seems it doesnt work on Windows 7. I wonder if anyone has managed to communicate with the dongle using applications other than BTool.
Regards
Ehad