[Ovmsdev] Toyota bZ4X and Subaru Solterra

[Solterra]

It's Toyota's e-TNGA platform. I know the CAN network is the same for 
Toyota bZ4X and Subaru Solterra, but I'm not sure about the bZ3 (China) 
and Lexus RZ... One complicating factor is there are two battery 
configurations for the bZ4X, one of which is shared with the Solterra.

Probably a detail for down the road a bit. For now, I've just created a 
bZ4X vehicle module and am tinkering under that.

On 2023-05-28 21:45, Mark Webb-Johnson wrote:

> Solterra,
> 
> Michael's advice is good.
> 
> If it is just two names for essentially the same vehicle, I think you 
> can refer to vehicle_voltampera (which implemented the Chevy Volt and 
> Open Ampera vehicle support). These were essentially the same vehicle 
> platform, but with minor bodywork differences and labelling.
> 
> If the two vehicles share the same platform (such as BMS, battery, etc) 
> but are otherwise very different, then I suggest you implement a 
> vehicle_<platform> for that platform, and derive two classes from that 
> in the same /src/ directory (one for each vehicle type). That will 
> allow you to put all common support code in the base platform, but have 
> each vehicle type customisable (and individually selectable).
> 
> Looking at images of the cars, it seems they are closest to the Volt 
> Ampera situation. Perhaps BZSS?
> 
> Regards, Mark.
> 
> On 28 May 2023, at 8:23 AM, Michael Geddes 
> <frog at bunyip.wheelycreek.net> wrote:
> 
> Hey Solterra,
> I couldn't say definitively but imho there are various options 
> depending on HOW different.
> 
> 1) They are exactly the same - or differences can be distinguished from 
> responses: Register the name with both in it. Done. (This has happened 
> with some older Kia + Hyundai even)
> 2)  They are mostly the same.  You could probably keep the one 
> directory but have  2 wrapper classes constructing the base class with 
> a parameter and register both in the factory Init. (Not sure if there 
> are examples - ask the other Michael if this is ok).
> 3) They have a lot of commonality.  You can inherit off a base class - 
> or inherit one vehicle impl off the other... But put them in separate 
> directories.  (This happens for Ioniq 5 and a bunch of other Kia + 
> Hyundai cars).
> 
> //.ichael Geddes
> 
> On Sat, 27 May 2023 at 21:19, Solterra <solterra at kezarnet.com> wrote:
> 
> Hello again,
> 
> I've finished my initial vehicle investigation and am not ready to add 
> support to OVMS.
> 
> When creating the vehicle stub, is there guidance for situations like 
> on this vehicle? There are two makes and models that are essentially 
> the same. Can I create a common 'components/vehicle_toyota_bz4x' and 
> point two vehicle selections to it somewhere else?
> 
> Thank you
> 
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