def unpack_echo(lwm: LoraWanMsg,
*,
orig: Optional[bytes] = None,
**kwargs: Any) -> bytes:
assert lwm.rtm is not None
payload: bytes = lwm.rtm['FRMPayload']
expect.assert_equal(0x04, payload[0],
explain('Invalid echo packet', **kwargs))
echo = payload[1:]
if orig is not None:
expected = bytes((x + 1) & 0xff for x in orig)
expect.assert_equal(expected, echo,
explain('Unexpected echo response', **kwargs))
return echo
def check_ncr_o(o: lo.Opt,
ChnlAck: Optional[int] = 1,
DRAck: Optional[int] = 1,
**kwargs: Any) -> None:
expect.assert_equal(type(o), lo.NewChannelAns,
explain('Unexpected MAC command', **kwargs))
o = cast(lo.NewChannelAns, o)
if ChnlAck is not None:
expect.assert_equal(o.ChnlAck.value, ChnlAck,
explain('Unexpected ChnlAck value',
**kwargs)) # type: ignore
if DRAck is not None:
expect.assert_equal(o.DRAck.value, DRAck,
explain('Unexpected DRAck value',
**kwargs)) # type: ignore
def check_laa_o(o: lo.Opt,
ChAck: Optional[int] = 1,
DRAck: Optional[int] = 1,
TXPowAck: Optional[int] = 1,
**kwargs: Any) -> None:
expect.assert_equal(type(o), lo.LinkADRAns,
explain('Unexpected MAC command', **kwargs))
o = cast(lo.LinkADRAns, o)
if ChAck is not None:
expect.assert_equal(o.ChAck.value, ChAck,
explain('Unexpected ChAck',
**kwargs)) # type: ignore
if DRAck is not None:
expect.assert_equal(o.DRAck.value, DRAck,
explain('Unexpected DRAck',
**kwargs)) # type: ignore
if TXPowAck is not None:
expect.assert_equal(o.TXPowAck.value, TXPowAck,
explain('Unexpected TXPowAck',
**kwargs)) # type: ignore
async def check_freqs(self,
m: LoraWanMsg,
freqs: Set[int],
count: Optional[int] = None,
**kwargs: Any) -> LoraWanMsg:
if count is None:
count = 16 * len(freqs)
fstats: Dict[int, int] = {}
m = await self.upstats(m, count, fstats=fstats)
expect.assert_equal(fstats.keys(), freqs,
explain('Unexpected channel usage', **kwargs))
return m
def unpack_dnctr(lwm: LoraWanMsg,
*,
expected: Optional[int] = None,
**kwargs: Any) -> int:
assert lwm.rtm is not None
payload = lwm.rtm['FRMPayload']
try:
dnctr, = cast(Tuple[int], struct.unpack('>H', payload))
except struct.error as e:
raise ValueError(f'invalid payload: {payload.hex()}') from e
if expected is not None:
expect.assert_equal(
expected, dnctr,
explain('Unexpected downlink counter', **kwargs))
return dnctr