add silent mode support for vector

can/interfaces/vector/canlib.py

@@ -204,6 +204,8 @@ def __init__(
         self.channel_masks: Dict[int, int] = {}
         self.index_to_channel: Dict[int, int] = {}
         self._can_protocol = CanProtocol.CAN_FD if is_fd else CanProtocol.CAN_20
+
+        self.silent_mode = kwargs.get('silent_mode', False)
 
         for channel in self.channels:
             if (
@@ -232,7 +234,7 @@ def __init__(
 
         permission_mask = xlclass.XLaccess()
         # Set mask to request channel init permission if needed
-        if bitrate or fd or timing:
+        if bitrate or fd or timing or self.silent_mode:
             permission_mask.value = self.mask
 
         interface_version = (
@@ -311,6 +313,9 @@ def __init__(
             if assert_timing:
                 self._check_can_settings(channel_mask=self.mask, bitrate=bitrate)
 
+        if self.silent_mode:
+            self._set_mode(channel_mask=self.mask, silent=True)
+
         # Enable/disable TX receipts
         tx_receipts = 1 if receive_own_messages else 0
         self.xldriver.xlCanSetChannelMode(self.port_handle, self.mask, tx_receipts, 0)
@@ -445,6 +450,26 @@ def _read_bus_params(
             f"Channel configuration for channel {channel} not found."
         )
 
+    def _set_mode(self, channel_mask: int, silent: bool) -> None:
+        # set parameters for channels with init access
+        channel_mask = channel_mask & self.permission_mask
+
+        if channel_mask:
+            if silent:
+                self.xldriver.xlCanSetChannelOutput(
+                    self.port_handle,
+                    channel_mask,
+                    xldefine.XL_OutputMode.XL_OUTPUT_MODE_SILENT
+                )
+            else:
+                self.xldriver.xlCanSetChannelOutput(
+                    self.port_handle,
+                    channel_mask,
+                    xldefine.XL_OutputMode.XL_OUTPUT_MODE_NORMAL
+                )
+
+        LOG.info("xlCanSetChannelOutput: silent_mode=%u", silent)
+
     def _set_bitrate(self, channel_mask: int, bitrate: int) -> None:
         # set parameters for channels with init access
         channel_mask = channel_mask & self.permission_mask

test/test_vector.py

@@ -78,6 +78,28 @@ def mock_xldriver() -> None:
     canlib.HAS_EVENTS = real_has_events
 
 
+def test_silent_mode() -> None:
+    bus = can.Bus(channel=0,
+                  serial=_find_virtual_can_serial(),
+                  interface="vector",
+                  receive_own_messages=True,
+                  silent=True)
+    assert isinstance(bus, canlib.VectorBus)
+    assert bus.protocol == can.CanProtocol.CAN_20
+
+    msg = can.Message(
+        arbitration_id=0xC0FFEF, data=[1, 2, 3, 4, 5, 6, 7, 8], is_extended_id=True
+    )
+
+    bus.send(msg)
+
+    received_msg = bus.recv()
+
+    assert received_msg == msg
+
+    bus.shutdown()
+
+
 def test_bus_creation_mocked(mock_xldriver) -> None:
     bus = can.Bus(channel=0, interface="vector", _testing=True)
     assert isinstance(bus, canlib.VectorBus)