Implement CanProtocol for UcanBus

Author: lumagi

can/interfaces/systec/ucanbus.py

@@ -1,12 +1,18 @@
 import logging
 from threading import Event
 
-from can import BusABC, BusState, Message
-from ...exceptions import CanError, CanInitializationError, CanOperationError
-
+from can import (
+    BusABC,
+    BusState,
+    Message,
+    CanProtocol,
+    CanError,
+    CanInitializationError,
+    CanOperationError,
+)
 from .constants import *
-from .structures import *
 from .exceptions import UcanException
+from .structures import *
 from .ucan import UcanServer
 
 log = logging.getLogger("can.systec")
@@ -145,7 +151,12 @@ def __init__(self, channel, can_filters=None, **kwargs):
 
         self._is_filtered = False
 
-        super().__init__(channel=channel, can_filters=can_filters, **kwargs)
+        super().__init__(
+            channel=channel,
+            can_filters=can_filters,
+            protocol=CanProtocol.CAN_20,
+            **kwargs,
+        )
 
     def _recv_internal(self, timeout):
         try:

test/test_systec.py

@@ -36,6 +36,8 @@ def setUp(self):
 
     def test_bus_creation(self):
         self.assertIsInstance(self.bus, ucanbus.UcanBus)
+        self.assertEqual(self.bus.protocol, can.CanProtocol.CAN_20)
+
         self.assertTrue(ucan.UcanInitHwConnectControlEx.called)
         self.assertTrue(
             ucan.UcanInitHardwareEx.called or ucan.UcanInitHardwareEx2.called