I have noticed that the preamble instead of being FE FF 05 is instead FE FF FF 05. I am also seeing packet length of 622 bytes (though sometimes it is 623 for some reason). I'm not able to get the checksum to match either. Is there a newer version of the packet spec I should be looking at?
Here is a sample packet:
Code: Select all
00000009 fe ff ff 05 04 a5 bd ab 3d 00 00 4e 80 d0 2f 00 ........ =..N../.
00000019 f5 bc d6 09 00 34 7d d0 04 00 01 00 00 00 00 01 .....4}. ........
00000029 00 00 00 00 00 00 00 00 00 29 4a 00 00 00 9b 55 ........ .)J....U
00000039 30 00 00 03 00 00 00 00 6f 6b 78 07 00 5d d5 e8 0....... okx..]..
00000049 01 00 3d d5 30 02 00 95 f5 14 00 00 00 00 00 00 ..=.0... ........
00000059 00 0e 00 00 00 00 63 31 46 01 00 f3 45 62 00 00 ......c1 F...Eb..
00000069 00 00 00 00 00 4b 00 00 00 00 c5 9c 02 00 00 50 .....K.. .......P
00000079 25 00 00 00 8f 9a 02 00 00 a1 26 13 11 00 94 80 %....... ..&.....
00000089 22 00 00 9d 88 69 02 00 47 9c 2f 00 00 01 00 00 "....i.. G./.....
00000099 00 00 23 00 00 00 00 72 b4 03 00 00 eb 36 01 00 ..#....r .....6..
000000A9 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000000B9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000000C9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000000D9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000000E9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000000F9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
00000109 00 .
0000010A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000011A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000012A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000013A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000014A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000015A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000016A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000017A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000018A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
0000019A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000001AA 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000001BA 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000001CA 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000001DA 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
000001EA 00 00 00 00 00 01 4d 00 0b 01 00 39 03 5b 00 58 ......M. ...9.[.X
000001FA 00 00 00 00 00 00 00 01 00 00 00 00 00 b7 00 5b ........ .......[
0000020A 00 42 00 03 00 00 00 00 00 29 00 00 00 00 00 00 .B...... .)......
0000021A 00 00 00 00 00 00 00 58 01 03 00 3c 00 00 00 00 .......X ...<....
0000022A 00 00 00 01 00 00 00 00 00 00 a3 03 83 81 81 82 ........ ........
0000023A 82 07 0b 82 82 81 a9 03 83 00 a3 03 83 81 81 00 ........ ........
0000024A 12 00 80 37 80 03 de 1a 01 8f b0 05 00 00 00 00 ...7.... ........
0000025A 00 00 00 00 00 00 00 00 00 7f 00 00 00 00 00 00 ........ ........
0000026A 00 00 00 00 00 00 00 00 ff ff fe ae ........ ....