USBHost: Wait for device to implement SET ADDRESS

The USB Device must change the address 2 ms after completing SET ADDRESS
status stage.

Wait 2 ms before issuing GET DESCRIPTOR under the new address. In my
case, this completely resolves the timeout issues.

Author: desowin

features/unsupported/USBHost/USBHost/USBHost.cpp

@@ -163,6 +163,12 @@ void USBHost::usb_process()
                             devices[i].activeAddress(true);
                             USB_DBG("Address of %p: %d", &devices[i], devices[i].getAddress());
 
+                            // Wait for the device to actually set the address. The Status stage
+                            // of SET ADDRESS happens before the device implements the request.
+                            // USB Device must take the new address into use within 2 ms after
+                            // completing SET ADDRESS status stage
+                            ThisThread::sleep_for(2);
+
                             // try to read again the device descriptor to check if the device
                             // answers to its new address
                             res = getDeviceDescriptor(&devices[i], buf, 8);