Quote Originally Posted by spfautsch View Post
Did some experimentation and it seems like the mode 9 resumes broadcasts according to what I would assume is a "default" scheduling program. My assumption is that it does not assume bus master role in this situation, but haven't been able to investigate further.

I've got a lot more work to do here but I think it's progress. My logger wasn't sending a bus master / heartbeat message before, and once I added that the ccm shut the f up for a whopping 5 seconds before it sent a self-resume announcement, so I think there are things we can learn from this info.

Code:
7745:41 67 02 F1 00 4B 4C 01 00 83 C6 06 E3 00 3D FF FF 00 FF FF 62
7748[F1 56 08 B1]
7867:F0 56 F1 C9
7869[F1 56 08 B1]
7880:F1 56 08 B1
7881[F1 56 F0 C9]
13939:F1 56 00 B9
13963:10 59 08 4B 02 00 42
13990:40 57 FF FF 6B
14163:10 59 00 4B 02 00 4A
14191:40 57 FF FF 6B
14363:10 59 00 4B 02 00 4A
14391:40 57 FF FF 6B
14563:10 59 00 4B 02 00 4A
14590:40 57 FF FF 6B
14764:10 59 00 4B 02 00 4A
14791:40 57 FF FF 6B
I'll keep plugging away at it when possible. I got a couple hours to experiment tonight, but probably wont see more time with the car until early Tuesday.
What is an F0 mode? An undocumented feature of the CCM?

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