def __init__(self, arg=None):
self.client = apx.Client()
if arg is not None:
if isinstance(arg, str):
self.client.create_node(arg)
elif isinstance(arg, apx.Node):
self.client.attach_node(arg)
def test_create_provide_ports(self):
apx_text = """APX/1.2
N"TestNode"
T"VehicleSpeed_T"S
T"EngineSpeed_T"S
P"VehicleSpeed"T[0]
P"EngineSpeed"T[1]
"""
client = apx.Client()
client.create_node(apx_text)
client.write(0, 0x1234)
self.assertEqual(client.nodeData.outPortDataFile.read(0,2), bytes([0x34, 0x12]))
self.assertEqual(client.nodeData.outPortDataFile.read(2,2), bytes([0, 0]))
client.write('EngineSpeed', 0xFFFF)
self.assertEqual(client.nodeData.outPortDataFile.read(0,2), bytes([0x34, 0x12]))
self.assertEqual(client.nodeData.outPortDataFile.read(2,2), bytes([0xFF, 0xFF]))
def test_create_require_ports(self):
apx_text = """APX/1.2
N"TestNode"
T"VehicleSpeed_T"S
T"EngineSpeed_T"S
T"InactiveActive_T"C(0,3):VT("InactiveActive_Inactive","InactiveActive_Active","InactiveActive_Error","InactiveActive_NotAvailable")
R"VehicleSpeed"T[0]:=0xFFFF
R"EngineSpeed"T[1]:=0xFFFF
R"ParkBrakeState"T["InactiveActive_T"]:=3
"""
client = apx.Client()
client.create_node(apx_text)
ParkBrakeState_port = client.find('ParkBrakeState')
self.assertEqual(client.read(0), 0xFFFF)
self.assertEqual(client.read(ParkBrakeState_port), 3)
client.nodeData.inPortDataFile.write(0, bytes([0x34,0x12]))
self.assertEqual(client.read(0), 0x1234)
@apx.DataListener.register
class MyDataListener(apx.DataListener):
def on_data(self, port, data):
global value
global client
print("%s: %s" % (port.name, str(data)))
if port.name == 'TestSignal2' and value is not None:
value = (value + 1) & 0xFFFF #wraparound to zero after 65535
client.write_port('TestSignal1', value)
if __name__ == '__main__':
node = apx.Node('TestNode1')
node.append(apx.ProvidePort('TestSignal1', 'S'))
node.append(apx.RequirePort('TestSignal2', 'S'))
value = 1
with apx.Client(node) as client:
client.set_listener(MyDataListener())
client.write_port('TestSignal1', value)
if client.connect_tcp('localhost', 5000):
while True:
try:
time.sleep(10)
value = None
break
except (KeyboardInterrupt, SystemExit):
value = None
break
ref_time = time.time()
@apx.DataListener.register
class MyDataListener(apx.DataListener):
global ref_time
def on_data(self, port, data):
delta_time = time.time() - ref_time
print("%.3f: %s=%s" % (delta_time, port.name, str(data)))
if __name__ == '__main__':
apx_text = """APX/1.2
N"Listener"
T"VehicleSpeed_T"S
T"EngineSpeed_T"S
R"VehicleSpeed"T["VehicleSpeed_T"]:=65535
R"EngineSpeed"T["EngineSpeed_T"]:=65535
"""
with apx.Client(apx_text) as client:
client.set_listener(MyDataListener())
if client.connect_tcp('localhost', 5000):
while True:
try:
time.sleep(1)
except (KeyboardInterrupt, SystemExit):
break