[Ovmsdev] Cables

Tom Parker tom at carrott.org
Thu May 3 18:54:08 HKT 2018

On 02/05/18 17:08, Mark Webb-Johnson wrote:

> Here is our current cable standard (for normal OBDII, not including 
> Nissan Leaf, Tesla Roadster, and Tesla S). This standard is valid for 
> OBDII connectors except for Nissan Leaf (where primary and alternate 
> CANs have been historically switched). At some point it would be good 
> to get away from that proprietary Nissan Leaf cable, but we’d need to 
> do it in a transparent way (presumably by listening on both buses for 
> traffic, before transmitting anything, and then deciding which is 
> which dynamically).

Yes, the Leaf buses have unique frames so it would be easy to do a 
software patch (in the lighting desk sense of the phrase) of the two 
buses so it will work with either cable. I'll try to get that done in 
time for the firmware on the next production hardware.

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