[Ovmsdev] Notifications Framework (subtype and filtering)

[Stephen Casner]

Mark,

Yes, I saw in the CAN parsing that separate case for "topoff" and I
wondered when that would be sent.  As you say, perhaps it is sent when
the car has been sitting plugged in long enough after charging that
the car automatically decides to charge again.  I don't think my car
has every been in that situation.

As Michael said, when charging on a road trip it would be useful to
have a notification when the charging transitions from the full-speed
to taper phases.  If the Roadster won't tell us about that with a CAN
message, perhaps we could simulate that by observing a drop in the
current.

                                                        -- Steve

On Mon, 14 May 2018, Mark Webb-Johnson wrote:

> Steve,
>
> I meant from the CAN bus point of view. The original documentation for this had:
>
> ID 100, B1=0x95, B2=0x01 charge mode is “charging”
> ID 100, B1=0x95, B2=0x02 charge mode is "topoff"
>
> One of my old can bus dumps (labelled 20120218.charge.topoff.crtd) shows this:
>
> 5193698.348 R11 100 95 4 1 64 57 2 E 2
> 5193706.208 R11 100 95 D A 64 57 2 E 2
> 5193709.798 R11 100 95 1 5 64 57 2 E 2
> 5193918.339 R11 100 95 4 9 64 57 2 E 2
>
> (duplicates removed, for clarity)
>
> That is 0x04 -> 0x0d -> 0x01 -> 0x04 (done -> preparing -> charging -> done). No ‘topoff’. In fact a search for ‘100 95 2’ (or ‘100 95 02’) doesn’t match anything in any logs I have.
>
> So perhaps, it doesn’t exist or is a Tesla Roadster 1.5 only thing? Or maybe it is that car automatically tops itself off after 24 hours of being plugged in?
>
> Regards, Mark.
>
> > On 13 May 2018, at 11:45 PM, Stephen Casner <casner at acm.org> wrote:
> >
> > On Sun, 13 May 2018, Mark Webb-Johnson wrote:
> >>
> >> P.S. For roadster, the topoff is just a different type of charge (I
> >> think triggered when you press Top-Off on the in-car control, to
> >> top-off an already fully charged battery). So, it occurs at the
> >> middle of the charge, just the same as ‘charging’.
> >
> > I wouldn't say it is a different type of charge as much as pressing
> > the Top-Off button means "try some more".  That button is only present
> > when the normal charging has finished and the VDS is still showing the
> > charging screen.  The Touch Screen Users Manual says this about the
> > message that can appear in the status line at the top of the charging
> > screen:
> >
> >    Topping Off Charge - Automatic charging is in progress because the
> >    fully charged vehicle has been sitting for a while. To maintain a
> >    full charge, a plugged in vehicle periodically tops itself off.
> >
> > And this about the button:
> >
> >    TOP-OFF - You can initiate "top off" charging manually.
> >
> > So it really just means to resume charging to fill back to the
> > intended level to compensate for charge that has dissipated while
> > sitting.
> >
> > In the Roadster is there any CAN bus indication when the charging
> > process transitions from the full-speed phase to the tapering phase?
> >
> >                                                        -- Steve_______________________________________________
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> > http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
>