I am looking at a 32 byte sequence, the chksum I believe is either the 1st two bytes or last 2 bytes (I am leaning on the last 2 bytes).  I think it is a straight 16bit xor but I can't find the crunch number to put against it.  It could be crc or citt too, I can't say for sure.Here are 3 packets to work with, any help will be greatly appreciated.55 00 53 4D 34 34 51 49 00 00 00 00 00 00 4F 1F DF F1 00 00 00 00 00 00 00 00 00 00 00 00 C7 CC16 02 53 4D 31 30 30 54 51 47 00 00 00 00 C8 7FA8 F4 00 00 00 00 00 00 00 00 00 00 00 00 41 F511 00 53 4D 34 38 44 00 00 00 00 00 00 00 69 DC9C F3 00 00 00 00 00 00 00 00 00 00 00 00 F3 48 
Need help to figure out a chksum
assembly;packet;math