Corvette CCM Reverse Engineering Anyone?

[spfautsch]

What is an F0 mode? An undocumented feature of the CCM?

That's the tester announcing it's bus master? May not be needed since wasn't used for the log I made two days ago.

Also why is your logger attempting to send a Mode 8 request before the CCM sends an F0 external device poll?

That was me doing a stupid in the message pump "logic".

steveo you must not have had enough tequila when you were testing the mode 7 stuff. Works just as expected for me with ccm silenced.

138337[F4 57 01 00 B4]
F4 92 01 00 00 00 00 00 00 00 00 7C 3E 00 04 06 40 00 02 2F 0B C5 0D 4C 27 5E 83 4D 28 20 4F 19 00 8F F1 DC D8 65 A8 10 86 88 80 80 00 A0 00 A4 05 8A 00 38 14 1A 00 04 CD FF 00 00 00 00 6B 43
138434[F1 57 07 10 A1]
10 59 00 5E 27 00 12
138452[F1 57 07 40 71]
40 57 FF FF 6B
41 67 27 51 00 5E 4D 01 04 05 DC BF E3 00 3F FF FF 00 FF FF 72
138497138499[F1 56 F0 C9]
F4 57 01 00 B4
138509[F4 57 01 00 B4]
F4 92 01 00 00 00 00 00 00 00 00 7C 3E 00 04 06 40 00 02 57 0B 8E 0D 4C 28 5E 83 4D 28 20 53 19 00 8F F1 DE D8 65 A9 10 86 88 80 80 00 A2 00 A5 05 85 00 38 14 19 00 04 CD FF 00 00 00 00 6C 4C

Gauges were updating and average fuel consumption started dropping while it was idling so I think this will work great. Just need to fine tune things and make it handle when the PCM shuts down gracefully, loss of sync, etc.