def on_message_received(self, msg):
if msg.is_error_frame:
self.log_event("{} ErrorFrame".format(self.channel),
msg.timestamp)
return
if msg.is_remote_frame:
dtype = 'r'
data = []
else:
dtype = "d {}".format(msg.dlc)
data = ["{:02X}".format(byte) for byte in msg.data]
arb_id = "{:X}".format(msg.arbitration_id)
if msg.is_extended_id:
arb_id += 'x'
channel = channel2int(msg.channel)
if channel is None:
channel = self.channel
else:
# Many interfaces start channel numbering at 0 which is invalid
channel += 1
serialized = self.FORMAT_MESSAGE.format(channel=channel,
id=arb_id,
dtype=dtype,
data=' '.join(data))
self.log_event(serialized, msg.timestamp)
def test_channel2int(self) -> None:
self.assertEqual(0, channel2int("can0"))
self.assertEqual(0, channel2int("vcan0"))
self.assertEqual(1, channel2int("vcan1"))
self.assertEqual(12, channel2int("vcan12"))
self.assertEqual(3, channel2int(3))
self.assertEqual(42, channel2int("42"))
self.assertEqual(None, channel2int("can"))
self.assertEqual(None, channel2int("can0a"))
def on_message_received(self, msg):
channel = channel2int(msg.channel)
if channel is None:
channel = self.channel
else:
# Many interfaces start channel numbering at 0 which is invalid
channel += 1
arb_id = msg.arbitration_id
if msg.is_extended_id:
arb_id |= CAN_MSG_EXT
flags = REMOTE_FLAG if msg.is_remote_frame else 0
if not msg.is_rx:
flags |= DIR
can_data = bytes(msg.data)
if msg.is_error_frame:
data = CAN_ERROR_EXT_STRUCT.pack(
channel,
0, # length
0, # flags
0, # ecc
0, # position
len2dlc(msg.dlc),
0, # frame length
arb_id,
0, # ext flags
can_data,
)
self._add_object(CAN_ERROR_EXT, data, msg.timestamp)
elif msg.is_fd:
fd_flags = EDL
if msg.bitrate_switch:
fd_flags |= BRS
if msg.error_state_indicator:
fd_flags |= ESI
data = CAN_FD_MSG_STRUCT.pack(
channel,
flags,
len2dlc(msg.dlc),
arb_id,
0,
0,
fd_flags,
len(can_data),
can_data,
)
self._add_object(CAN_FD_MESSAGE, data, msg.timestamp)
else:
data = CAN_MSG_STRUCT.pack(channel, flags, msg.dlc, arb_id,
can_data)
self._add_object(CAN_MESSAGE, data, msg.timestamp)
def on_message_received(self, msg):
channel = channel2int(msg.channel)
if channel is None:
channel = self.channel
else:
# Many interfaces start channel numbering at 0 which is invalid
channel += 1
arb_id = msg.arbitration_id
if msg.is_extended_id:
arb_id |= CAN_MSG_EXT
flags = REMOTE_FLAG if msg.is_remote_frame else 0
data = bytes(msg.data)
if msg.is_error_frame:
data = CAN_ERROR_EXT_STRUCT.pack(channel,
0, # length
0, # flags
0, # ecc
0, # position
len2dlc(msg.dlc),
0, # frame length
arb_id,
0, # ext flags
data)
self._add_object(CAN_ERROR_EXT, data, msg.timestamp)
elif msg.is_fd:
fd_flags = EDL
if msg.bitrate_switch:
fd_flags |= BRS
if msg.error_state_indicator:
fd_flags |= ESI
data = CAN_FD_MSG_STRUCT.pack(channel, flags, len2dlc(msg.dlc),
arb_id, 0, 0, fd_flags, msg.dlc, data)
self._add_object(CAN_FD_MESSAGE, data, msg.timestamp)
else:
data = CAN_MSG_STRUCT.pack(channel, flags, msg.dlc, arb_id, data)
self._add_object(CAN_MESSAGE, data, msg.timestamp)
