receiver: allow for unknown receivers

lib/logitech_receiver/base.py

@@ -111,6 +111,8 @@ def filter_receivers(bus_id, vendor_id, product_id, hidpp_short=False, hidpp_lon
     for record in _RECEIVER_USB_IDS:  # known receivers
         if match(record, bus_id, vendor_id, product_id):
             return record
+    if vendor_id == 0x046D and 0xC500 <= product_id <= 0xC5FF:  # unknown receiver
+        return {'vendor_id': vendor_id, 'product_id': product_id, 'bus_id': bus_id, 'isDevice': False}
 
 
 def receivers():
@@ -120,8 +122,8 @@ def receivers():
 
 def filter(bus_id, vendor_id, product_id, hidpp_short=False, hidpp_long=False):
     """Check that this product is of interest and if so return the device record for further checking"""
-    for record in _RECEIVER_USB_IDS:  # known receivers
-        if match(record, bus_id, vendor_id, product_id):
+    record = filter_receivers(bus_id, vendor_id, product_id, hidpp_short, hidpp_long)
+    if record:  # known or unknown receiver
         return record
     for record in _DEVICE_IDS:  # known devices
         if match(record, bus_id, vendor_id, product_id):

lib/logitech_receiver/receiver.py

@@ -58,7 +58,8 @@ class Receiver:
         self.product_id = device_info.product_id
         product_info = _product_information(self.product_id)
         if not product_info:
-            raise Exception('Unknown receiver type', self.product_id)
+            _log.warning('Unknown receiver type: %s', self.product_id)
+            product_info = {}
         self.receiver_kind = product_info.get('receiver_kind', 'unknown')
 
         # read the serial immediately, so we can find out max_devices