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struct usb_bus *busses;
struct usb_bus *bus;
struct usb_device_descriptor *desc;
struct usb_device *dev;
struct usb_dev_handle *m_USBHandle;
usb_init();
usb_find_busses();
usb_find_devices();
busses = usb_get_busses();
for(bus = busses;bus;bus = bus -> next)
{
for(dev = bus -> devices; dev ; dev = dev -> next)
{//search device
desc = &(dev ->
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