def crc16_checksum(self):
"""Get CRC16 checksum
A cyclic redundancy check (CRC) is an error-detecting code commonly
used in digital networks and storage devices to detect accidental changes
to raw data. The CRC was invented by W. Wesley Peterson in 1961.
Returns:
Chepy: The Chepy object.
"""
self.state = CrcArc().process(self._convert_to_bytes()).finalhex()
return self
def makepkg(values):
packet = []
packet.append(len(values) + 3)
packet += values
p = CrcArc()
p.process(packet)
crc = p.final()
packet.append(crc >> 8 & 0xFF)
packet.append(crc & 0xFF)
return packet