def test_get_consumed_messages(self):
cn = CANNetwork()
cn.add_node(CANNode('SendingNode'))
cn.add_node(CANNode('ReceivingNode'))
cn.nodes['SendingNode'].add_message(CANMessage(1, 'Message', 1))
sig = CANSignal('Signal', 0, 8)
sig.add_receiver(cn.nodes['ReceivingNode'])
cn.nodes['SendingNode'].messages[1].add_signal(sig)
assert cn.nodes['SendingNode'].messages[1] in cn.get_consumed_messages(
cn.nodes['ReceivingNode'])
def _parse_signal(self, signal_str):
"""Parses a signal string and updates the CANBus
Args:
signal_str: String with signal informations
Raises:
RuntimeError: If signal definition is not in a message block
"""
if self._mode[0] != 'MESSAGE':
raise RuntimeError('Signal description not in message block')
pattern = 'SG_\s+(?P<name>\S+)\s*(?P<is_multipexer>M)?(?P<multiplexer_id>m\d+)?\s*:\s*'
pattern += '(?P<start_bit>\d+)\|(?P<length>\d+)\@(?P<endianness>[0|1])(?P<sign>[\+|\-])\s*'
pattern += '\(\s*(?P<factor>\S+)\s*,\s*(?P<offset>\S+)\s*\)\s*'
pattern += '\[\s*(?P<min_value>\S+)\s*\|\s*(?P<max_value>\S+)\s*\]\s*"(?P<unit>\S*)"\s+(?P<receivers>.+)'
reg = re.search(pattern, signal_str)
little_endian = True if reg.group(
'endianness').strip() == '1' else False
signed = True if reg.group('sign').strip() == '-' else False
receivers = [
receiver.strip() for receiver in re.sub(
'\s+', ' ', reg.group('receivers')).strip().split(' ')
]
is_multiplexer = True if reg.group('is_multipexer') else False
multiplexer_id = int(reg.group('multiplexer_id').strip()
[1:]) if reg.group('multiplexer_id') else None
signal = CANSignal(name=reg.group('name').strip(),
start_bit=int(reg.group('start_bit')),
length=int(reg.group('length')),
little_endian=little_endian,
signed=signed,
factor=float(reg.group('factor')),
offset=float(reg.group('offset')),
value_min=float(reg.group('min_value')),
value_max=float(reg.group('max_value')),
unit=reg.group('unit').strip(),
is_multiplexer=is_multiplexer,
multiplexer_id=multiplexer_id)
for node_name in receivers:
node = self._can_network.nodes[node_name]
signal.add_receiver(node)
self._mode[1].add_signal(signal)
def test_add_receiver(self):
node = CANNode('TestNode')
sig = CANSignal('Signal', 0, 8)
sig.add_receiver(node)
assert len(sig.receiver) == 1