def get_master_crc_from_filter_crcs(input_data: [[int, int]]) -> int:
"""
Get the master CRC from filter CRCs.
:param input_data: A list of [filterId, filterCRC].
:returns: The master CRC.
"""
def sort_method(val):
return val[0]
input_data.sort(key=sort_method)
# Check for duplicate filter IDs.
for i in range(0, len(input_data) - 1):
if input_data[i][0] == input_data[i + 1][0]:
raise CrownstoneException(
CrownstoneError.INVALID_INPUT,
"Cannot have 2 filters with the same ID.")
writer = BufferWriter()
for id_and_filter_crc in input_data:
writer.putUInt8(id_and_filter_crc[0])
writer.putUInt32(id_and_filter_crc[1])
return crc32(writer.getBuffer())
def _serialize(self, writer: BufferWriter):
super()._serialize(writer)
writer.putUInt8(self.adType)
writer.putUInt32(self.mask)
def _serialize(self, writer: BufferWriter):
writer.putUInt8(self.commandProtocolVersion)
writer.putUInt16(self.masterVersion)
writer.putUInt32(self.masterCrc)