I am trying to figure out a checksum algorithm. D1 to D6 is data, D7 is a counter obviously and byte 8 must be a CRC, but I didnt have any idea on how to build it. Tried to check if it fits any standard, but no clue yet. Would be awesome if anyone had an idea :)
D1 D2 D3 D4 D5 D6 D7 D8
20 0E 20 00 04 FF F0 1F
20 0E 20 00 04 FF 00 60
20 0E 20 00 04 FF 10 AD
20 0E 20 00 04 FF 20 E7
20 0E 20 00 04 FF 30 2A
20 0E 20 00 04 FF 40 73
20 0E 20 00 04 FF 50 BE
20 0E 20 00 04 FF 60 F4
20 0E 20 00 04 FF 70 39
20 0E 20 00 04 FF 80 46
20 0E 20 00 04 FF 90 8B
20 0D 20 00 04 FF A0 0B
20 0D 20 00 04 FF B0 C6
20 0D 1F FF 04 FF C0 6A
20 0D 1F FF 04 FF D0 A7
20 0D 1F FE 04 FF E0 70
20 0C 1F FD 04 FF F0 41
20 0C 1F FD 04 FF 00 3E
20 0C 1F FC 04 FF 10 6E
20 0B 1F FB 04 FF 20 1F
20 0B 1F FB 04 FF 30 D2
20 0B 1F FB 04 FF 40 8B
20 0A 1F FA 04 FF 50 9D
20 0A 1F FA 04 FF 60 D7
20 0A 1F F9 04 FF 70 A0
20 09 1F F9 04 FF 80 15
20 09 1F F9 04 FF 90 D8
20 09 1F FA 04 FF A0 28
20 08 1F F9 04 FF B0 19
20 08 1F FA 04 FF C0 FA
20 08 1F F9 04 FF D0 8D
20 07 1F F8 04 FF E0 9F
20 07 1F F8 04 FF F0 52
20 06 1F F8 04 FF 00 6B
20 05 1F F7 04 FF 10 04
20 05 1F F7 04 FF 20 4E
20 04 1F F6 04 FF 30 58
20 03 1F F5 04 FF 40 74
20 03 1F F5 04 FF 50 B9
20 03 1F F5 04 FF 60 F3
20 02 1F F5 04 FF 70 78
20 02 1F F6 04 FF 80 BD
20 02 1F F7 04 FF 90 ED
20 02 1F F8 04 FF A0 CF
20 02 1F F9 04 FF B0 9F
20 02 1F FB 04 FF C0 E1
20 02 1F FC 04 FF D0 D8
20 02 1F FD 04 FF E0 0F
20 02 1F FE 04 FF F0 78
20 02 1F FF 04 FF 00 9A
20 02 1F FF 04 FF 10 57
20 02 20 00 04 FF 20 E8
20 02 20 00 04 FF 30 25
20 02 20 00 04 FF 40 7C
20 02 20 00 04 FF 50 B1
20 02 20 00 04 FF 60 FB
20 02 20 00 04 FF 70 36