device: use 0xFF instead of 0 for direct-connected devices

lib/logitech_receiver/base.py

@@ -513,10 +513,6 @@ def ping(handle, devnumber, long_message=False):
     # import inspect as _inspect
     # print ('\n  '.join(str(s) for s in _inspect.stack()))
 
-    assert devnumber != 0xFF
-    assert devnumber >= 0x00
-    assert devnumber < 0x0F
-
     with acquire_timeout(handle_lock(handle), handle, 10.):
 
         # randomize the SoftwareId and mark byte to be able to identify the ping

lib/logitech_receiver/device.py

@@ -40,11 +40,14 @@ class Device(object):
         self.receiver = receiver
         self.may_unpair = False
         self.isDevice = True  # some devices act as receiver so we need a property to distinguish them
+        self.handle = None
+        self.path = None
+        self.product_id = None
 
         if receiver:
             assert number > 0 and number <= receiver.max_devices
         else:
-            assert number == 0
+            assert number == 0xFF
         # Device number, 1..6 for unifying devices, 1 otherwise.
         self.number = number
         # 'device active' flag; requires manual management.
@@ -89,10 +92,6 @@ class Device(object):
         # See `add_notification_handler`
         self._notification_handlers = {}
 
-        self.handle = None
-        self.path = None
-        self.product_id = None
-
         # if _log.isEnabledFor(_DEBUG):
         #     _log.debug("new Device(%s, %s, %s)", receiver, number, link_notification)
 
@@ -493,7 +492,7 @@ class Device(object):
         try:
             handle = _base.open_path(device_info.path)
             if handle:
-                return Device(None, 0, info=device_info)
+                return Device(None, 0xFF, info=device_info)
         except OSError as e:
             _log.exception('open %s', device_info)
             if e.errno == _errno.EACCES:

lib/solaar/ui/window.py

@@ -441,7 +441,7 @@ def _device_row(receiver_path, device_number, device=None):
 
     receiver_row = _receiver_row(receiver_path, None if device is None else device.receiver)
 
-    if device_number == 0:  # direct-connected device, receiver row is device row
+    if device_number == 0xFF or device_number == 0x0:  # direct-connected device, receiver row is device row
         if receiver_row:
             return receiver_row
         item = None