[Ovmsdev] Activating a sleeping Gen 1 Leaf

[Collin Kidder]

The proper message is 0x68C. Here is a capture of the car sitting
idle, then getting a climate control request over carwings. Then, the
carwings system wakes up the car and begins heating. Timestamp is in
microseconds. So, there is only a 50ms gap from the time the wakeup
message is sent to the time that other devices begin blasting a ton of
messages onto the bus. Before the wake up message there are no
messages on the bus at all. It's dead quiet.

www.savvycan.com/leaf-cc-remotely.zip

The URL also answers the question of what am I using for capture
analysis. I wrote my own program in QT for that purpose.

I've been using the same spreadsheet on google. I think it's
reasonably accurate usually but doesn't really cover every message.

On Tue, Mar 15, 2016 at 2:59 PM, Tom Parker <tom at carrott.org> wrote:
> Can you share a capture of a Carwings wakeup on a Gen2?
> https://docs.google.com/spreadsheets/d/1EHa4R85BttuY4JZ-EnssH4YZddpsDVu6rUFm0P7ouwg/edit?pref=2&pli=1#gid=0
> says you send message 68c and
> http://www.mynissanleaf.com/viewtopic.php?p=438109#p438109 says you send
> message 68. I'm guessing the former is correct. Neither say what the gap
> between the messages should be.
>
> What do people use to analyze can bus captures? I've started writing a
> wireshark dissector for the leaf ev can bus which is making the messages
> easier to understand and hence the OVMS code easier to write. Of course I
> had to learn lua to do that, but hopefully it will help others too. I'll
> push it to a repo shortly.
>
> Do you happen to know if there is there a better reference for what the
> messages mean than
> https://docs.google.com/spreadsheets/d/1EHa4R85BttuY4JZ-EnssH4YZddpsDVu6rUFm0P7ouwg/edit?pref=2&pli=1#gid=0
> ? I've looked at various forum threads but the information is spread very
> thinly through the discussion. Other project's firmware is a little more
> information dense but harder to extract.
>
>
> On 03/13/2016 02:16 AM, Collin Kidder wrote:
>>
>> The Gen2 does wake up based on a CAN message. I have captures that
>> show that message being the very first thing over the wire and then
>> the car wakes up and a ton of messages begin to flow. But, I haven't
>> tried directly injecting that message to see if I can wake the car up
>> via the message. It is, however, supposed to work that way. I'll give
>> it a try when I get a chance.
>>
>> I actually have both a 2012 and 2013 Leaf so I can do tests for
>> differences. I'll get a capture from both and compare to see if there
>> is a good way to distinguish the two over CAN. The CAN data decoded on
>> mynissanleaf shows things that only exist in one or the other so it
>> should be very possible to figure out which one you're in.
>>
>> On Wed, Mar 9, 2016 at 4:35 AM, Tom Parker <tom at carrott.org> wrote:
>>>
>>> Quick update,
>>>
>>> I contorted myself into the driver's foot well of my right hand drive
>>> Japanese domestic manufacture 2012 gen 1 Leaf and unplugged the TCU. I
>>> can
>>> confirm that connecting pin 1 (battery +ve) to pin 11 (EV System
>>> Activation
>>> Request) causes a beep from the front of the car and a few relay clicks.
>>> I
>>> didn't try to activate climate control to confirm that it works, I'll try
>>> that later this week and if it does, hook it up to the OVMS. Splice into
>>> the
>>> loom in the cramped conditions under the dashboard won't be fun. I
>>> wouldn't
>>> be totally surprised if the TCU does the charge timer wakeup, so
>>> preserving
>>> the existing circuit is a good idea.
>>>
>>> http://www.mynissanleaf.com/viewtopic.php?p=438109#p438109 says the Gen 2
>>> Leaf doesn't need this circuit, and the same source describes CAN message
>>> to
>>> do the wakeup. If anyone wants to test that I can add that message to see
>>> if
>>> it works.
>>>
>>> Has anyone seen a message on the EV CAN Bus that would distinguish a Gen
>>> 1
>>> from a Gen 2?
>>> _______________________________________________
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>>
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