Hello All!
I am pretty new to electronics, and am trying to figure out an issue. I have been capturing and decoding fsk being sent to a device (it is being received by a MT88E43B chip), and am trying to figure out the checksum format used so I can generate it. Is it some sort of two's compliment sum? Any help would be appreciated! some examples are
80 1C 01 08 31 31 31 36 31 32 34 32 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 54
and
80 1C 01 08 31 31 31 36 31 32 33 34 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 53
and here are some from a sequence
80 1C 01 08 31 32 30 33 31 30 31 31 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5D
80 1C 01 08 31 32 30 33 31 30 30 31 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5E
80 1C 01 08 31 32 30 33 31 30 30 32 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5D
80 1C 01 08 31 32 30 33 31 30 30 33 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5C
80 1C 01 08 31 32 30 33 31 30 30 34 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5B
80 1C 01 08 31 32 30 33 31 30 30 35 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5A
80 1C 01 08 31 32 30 33 31 30 30 36 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 59
80 1C 01 08 31 32 30 33 31 30 30 37 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 58
80 1C 01 08 31 32 30 33 31 30 30 38 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 57
80 1C 01 08 31 32 30 33 31 30 30 39 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 56
I am pretty new to electronics, and am trying to figure out an issue. I have been capturing and decoding fsk being sent to a device (it is being received by a MT88E43B chip), and am trying to figure out the checksum format used so I can generate it. Is it some sort of two's compliment sum? Any help would be appreciated! some examples are
80 1C 01 08 31 31 31 36 31 32 34 32 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 54
and
80 1C 01 08 31 31 31 36 31 32 33 34 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 53
and here are some from a sequence
80 1C 01 08 31 32 30 33 31 30 31 31 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5D
80 1C 01 08 31 32 30 33 31 30 30 31 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5E
80 1C 01 08 31 32 30 33 31 30 30 32 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5D
80 1C 01 08 31 32 30 33 31 30 30 33 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5C
80 1C 01 08 31 32 30 33 31 30 30 34 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5B
80 1C 01 08 31 32 30 33 31 30 30 35 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 5A
80 1C 01 08 31 32 30 33 31 30 30 36 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 59
80 1C 01 08 31 32 30 33 31 30 30 37 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 58
80 1C 01 08 31 32 30 33 31 30 30 38 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 57
80 1C 01 08 31 32 30 33 31 30 30 39 6D 00 70 00 5B 01 00 63 05 20 00 00 00 03 49 02 33 33 56
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