I looked for a crc-16(crc 16) function to use but couln't find one
that worked:
This one is working ..
def crc16(s):
crcValue=0x0000
crc16tab = (0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280,
0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481,
0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81,
0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40,...