def test_bcm_msg_creation_with_2_extended_frames_and_ival1(self):
can_id = 0x12345678
data = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id, data=data)
can_id2 = 0x1FFFF456
data2 = bytes(range(0, 0x44, 0x11))
frame2 = CanFrame(can_id=can_id2, data=data2)
opcode = BcmOpCodes.TX_SETUP
flags = (BCMFlags.SETTIMER | BCMFlags.STARTTIMER)
frames = [
frame1,
frame2,
]
interval1 = 0.1
interval2 = 5
bcm1 = BcmMsg(
opcode=opcode,
flags=flags,
can_id=can_id,
frames=frames,
ival1=interval1,
ival2=interval2,
)
bcm_as_bytes = bcm1.to_bytes()
assert len(bcm_as_bytes) == BcmMsg.get_size() + (CanFrame.get_size() *
len(frames))
bcm2 = BcmMsg.from_bytes(bcm_as_bytes)
assert bcm1 == bcm2
def test_unequal_bcm_msgs(self):
can_id = 0x123
data = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id, data=data)
opcode = BcmOpCodes.TX_SETUP
flags = (BCMFlags.SETTIMER | BCMFlags.STARTTIMER)
frames = [
frame1,
]
interval = 0.1
bcm1 = BcmMsg(
opcode=opcode,
flags=flags,
can_id=can_id,
frames=frames,
ival2=interval,
)
bcm_as_bytes = bcm1.to_bytes()
assert len(bcm_as_bytes) == BcmMsg.get_size() + (CanFrame.get_size() *
len(frames))
interval2 = 1
bcm2 = BcmMsg(
opcode=opcode,
flags=flags,
can_id=can_id,
frames=frames,
ival2=interval2,
)
assert bcm1 != bcm2
def test_unequal_frames(self):
can_id1 = 0x123
data1 = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id1, data=data1)
can_id2 = 0x12345678
data2 = bytes(range(0, 0x44, 0x11))
frame2 = CanFrame(can_id=can_id2, data=data2)
assert frame1 != frame2
def test_can_frame_creation_with_long_id_and_no_eff_flag(self):
can_id = 0x12345678
data = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id, data=data)
flags = frame1.flags
assert (flags & CanFlags.CAN_EFF_FLAG)
assert not (flags & CanFlags.CAN_RTR_FLAG)
assert not (flags & CanFlags.CAN_ERR_FLAG)
frame_as_bytes = frame1.to_bytes()
assert len(frame_as_bytes) == CanFrame.get_size()
frame2 = CanFrame.from_bytes(frame_as_bytes)
assert frame1 == frame2
def test_can_raw_socket(self):
interface = "vcan0"
s = CanRawSocket(interface=interface)
can_id = 0x12345678
data = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id, data=data)
q = Queue()
p = Thread(target=self.receive_from_can_raw_socket,
args=(
interface,
q,
))
p.setDaemon(True)
p.start()
time.sleep(1)
s.send(frame1)
frame2 = q.get()
p.join()
assert frame1 == frame2
def test_bcm_msg_and_bcm_socket_send_operation(self):
interface = "vcan0"
s = CanBcmSocket(interface=interface)
can_id = 0x12345678
data = bytes(range(0, 0x88, 0x11))
frame1 = CanFrame(can_id=can_id, data=data)
bcm = BcmMsg(
opcode=BcmOpCodes.TX_SETUP,
flags=(BCMFlags.SETTIMER | BCMFlags.STARTTIMER),
can_id=can_id,
frames=[
frame1,
],
ival1=0,
ival2=1,
)
q = Queue()
p = Thread(target=self.receive_from_can_raw_socket,
args=(
interface,
q,
))
p.setDaemon(True)
p.start()
try:
s.send(bcm)
except OSError:
assert False, "The length of bcm_msg is false. Length {0} Platform {1}".format(
len(bcm.to_bytes()), platform.machine())
else:
time.sleep(1)
frame2 = q.get()
p.join()
assert frame1 == frame2
def polar_performance(percentage, src=35, dst=255, prio=3):
can_id = to_can_id(130313, src, dst, prio)
data = humidity_data(0xff, 0x01, 0x01, percentage, 0)
frame = CanFrame(can_id=can_id, data=data)
return frame
def iso_address_claim(src=35, dst=255, prio=6):
can_id = to_can_id(60928, src, dst, prio)
frame = CanFrame(can_id=can_id, data=b'\xff\xff\xff\xff\xff\xff\xff\xff')
return frame