[Ovmsdev] Nissan Leaf, GPIO and "Stop Charging", "Lock/Unlock" commands.

Stein Arne Sordal ovms at topphemmelig.no
Wed Aug 29 16:09:09 HKT 2018

> On 29 Aug 2018, at 10:02, Robin O'Leary <ovmsdev at caederus.org> wrote:
> On Tue, Aug 28, 2018 at 09:16:04PM -0500, Brian Greenberg wrote:
>> I picked up a 2015 Leaf about 3 weeks ago, and found this project a few
>> days later.  My 3.1 hardware should arrive from FastTech this week.  I've
>> been browsing through the git repos and manuals, and hope to make some
>> small contributions in the future.
>> How  interested are you devs in code contributions that require hardware
>> modifications to the vehicle?  :)
> I have the same model as you and I am interested experimenting in this
> direction.
>> Two things that I am interested in are remotely toggling the door locks,
>> and stopping/disabling an ongoing charge.  Neither are currently supported
>> functions in the Leaf, as (if it is possible at all) the codes are
>> unknown.
> Did you see this thread about door locks?
> 	http://lists.openvehicles.com/pipermail/ovmsdev/2018-May/005165.html
> It works for some, but not for me, though I still haven't got around to
> trying it with the TCU unplugged (mostly because I haven't figured out
> where the TCU is on my right-hand drive model!).

Door locks only works on 2016 or later.

> As for charging, I suspect it'll be easy to find some CAN message(s)
> that will cause it to stop; the problem might be that doing so triggers
> some fault detection that could also upset things.  But we have lots of
> logs to get ideas from, so it's certainly worth having a go.

I´m also interested in a Stop-charge function.
Have anyone done logging of the CAN-bus when the car stops charging at 80% ? (removed in 2016 and later)

>> ...  Three GPIO assignments and three
>> opto isolated 12V relays should easily enable the desired functionality.
>> Assuming I can walk this walk, would there be interest in the code?  This
>> would be a bit more involved than the single wire connection between the
>> OVMS module and the TCU that is needed to enable the vehicle wake up signal
>> on 2011 and 2012 models.....
> That would be great; it seems like there should be generic functions
> to deal with the ESP32's GPIO pins (things like switch on/off, toggle
> for n milliseconds); that the vehicle-specific layer could just call
> as required.
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