def _lindstrom(value, length):
result = ba(floatbe=value, length=length) ^ ba(floatbe=2, length=length)
if value < 0:
result.invert()
else:
result.invert(0)
return result.uintbe
def f(self, value):
assert isinstance(
value, (np.float32, np.float64, float)), "Don't understand number"
if isinstance(value, (np.float32)):
result = ba(floatbe=value, length=32)
elif isinstance(value, (np.float64, float)):
result = ba(floatbe=value, length=64)
bits = result.len
self._ba = result
self._m, self._e = (23, 8) if bits == 32 else (52, 11)
self._f = value
def _rev_lindstrom(value, length):
result = ba(uintbe=value, length=length) # ^ ba(floatbe=2, length=length)
if result.bin[0] == "1":
result.invert(0)
else:
result.invert()
return result.floatbe
def f(self, value):
assert isinstance(
value, (np.float32, np.float64, float)), "Don't understand number"
if isinstance(value, (np.float32)):
result = ba(floatbe=value, length=32) ^ ba(floatbe=2, length=32)
elif isinstance(value, (np.float64, float)):
result = ba(floatbe=value, length=64) ^ ba(floatbe=2, length=64)
bits = result.len
if value < 0:
result = ~result
else:
result = ba(uintbe=result.uintbe ^ (1 << result.len - 1),
length=result.len)
self._ba = result
self._m, self._e = (23, 8) if bits == 32 else (52, 11)
self._f = value
def prepare_message(self, rawmessage) -> list:
"""
Parse the raw bitstring to decoded raw bytes with start stop bits removed and endianness fixed
:param rawmessage:
:return: list of bytes
"""
if type(rawmessage) == ba:
packet = rawmessage
else:
packet = ba(bin=rawmessage)
try:
# Save raw bitstream
self.raw_message = packet.bin
# Sync on preamble
counter = 0
bit = packet[0]
while packet[counter] == bit:
bit = not bit
counter += 1
packet = packet << (counter - 2)
# Split bin string to raw packets
message = [
packet[i:i + RAW_BYTE_LENGTH]
for i in range(0, len(packet), RAW_BYTE_LENGTH)
]
# Remove start and stop bytes
message = [byte[1:9] for byte in message]
# Reverse bit order (Endianess is LSB)
message = [byte[::-1] for byte in message]
return message
except Exception:
raise PreambleError()
def extract_message(self, prepared_message: list) -> list:
"""
Remove preamble, syncwords and end word
:param prepared_message:
:return:
"""
# Remove sync words
for i, x in enumerate(SYNC):
if prepared_message[i].uint != x:
raise SyncError()
prepared_message = prepared_message[len(SYNC):len(prepared_message)]
# Remove stop and rest of bogus data in packet
index = prepared_message.index(ba(int=STOP, length=8))
prepared_message = prepared_message[:index]
# Convert to numpy uint8 datatype
prepared_message = [np.uint8(x.uint) for x in prepared_message]
return prepared_message
CANID_4003_PROXI = 0x1E114003 CANID_4003_CLOCK = 0x0C214003 CANID_RADIO_STATION = 0x0A194005 CANID_RADIO_AUDIOCH = 0x06314005 CANID_RADIO_FREQUENCY = 0x0A114005 CANID_BM_STATUS = 0x0E094021 CANID_BM_PROXI = 0x1E114021 CANID_BM_WATCHDOG = 0x0A014021 CANID_BM_AUDIO_CHANNEL = 0x06314021 CANID_BM_TRACK_TIME = 0x08094021 CANID_BM_TEXT_MESSAGE = 0x0A394021 MASK_BUTTON_VOLUME_UP = ba(hex='0x8000') MASK_BUTTON_VOLUME_DN = ba(hex='0x4000') MASK_BUTTON_WINDOWS = ba(hex='0x0040') MASK_BUTTON_MUTE = ba(hex='0x2000') MASK_BUTTON_UP = ba(hex='0x1000') MASK_BUTTON_DOWN = ba(hex='0x0800') MASK_BUTTON_MENU = ba(hex='0x0080') MASK_BUTTON_SOURCE = ba(hex='0x0400') MASK_DOOR_DRIVER = ba(hex='0x0004000000000000') MASK_DOOR_PASSENGER = ba(hex='0x0008000000000000') MASK_ARROW_LEFT = ba(hex='0x000040000000') MASK_ARROW_RIGHT = ba(hex='0x000020000000') MASK_AUDIOCH_MUTED = ba(hex='0x0000000000000080')
def get_axes(self, x, y):
"""generates the axes as
from a binary value"""
self.XAxis = ba(bin=x).int
self.YAxis = ba(bin=y).int
