[Ovmsdev] i-Miev/C-Zero/iOn

Mon Sep 16 16:55:21 HKT 2013

Hi Thomas,

*"Still has some debugging to do on the i-Miev code, as i'm only get "SOC:
0%" from STAT?"
*

Are you able to read any CAN-bus values from your iMiEV?

I experienced once at my Think City, that the Ovms-module did not read the
CAN-bus at all; I got 0% SOC.
The problem was I had two external CAN-devices connected at the same time
(Duinomite Mega + OVMS). It worked fine when both modules were powered on
at the same time, but Ovms failed to read the bus when the Duinomite Mega
was powered off.

Du you have access to any kind of can-reader tool? This can be used to
verify that you are looking at the correct bytes.
I've used P-CAN USB adapter
http://www.peak-system.com/PCAN-USB.199.0.html?&L=1
and PCANView
http://www.computer-solutions.co.uk/gendev/can-basic-dll.htm

You can use it to verify you have SOC in msg 0x374 byte 1.

To understand the mask and filter, you have to consider the mask as a bit
"enable" / "disable". Any zero in the mask bit disables that specific bit.
The filter gives a range of bit combinations.
Both mask an filter is 11 bit length (0-10), all 8 bits from SIDH + 3 most
significant bits from SIDL

Your Mask0 (RXM0) is 11111111 000 (0x7F8) which enables bit 3 to 10
Your Filter0 (RXF0) is 01100000 000
In combination with your mask0, this gives the message range from 0x300 to
0x3F8, which covers your messages.
 01100000 000 -> 0x300
 011111111 000 -> 0x3F8
(however you have an minor error in your comment 0x300 .. 0x3E0)

The same goes for mask1 and filter2, filter3, filter4,which applies to
poll1(). But you have to make sure that the mask1 enables sufficient number
of bits for the corresponding filters.
Your mask1 is 11111111 111 so that is OK.
Your filter2 is  01010000 101 (0x285) which is OK
Your filter 3 is 10000010 010 (0x412) which is OK

You have yet not built any vehicle specific SMS function, so the STAT-sms
is created in the net_msg.c file . I think it this file prints SOC to SMS
regardless of the doorbit status.

A hint is using the diag-port for sending SMS (saves you sms cost) for
debuging).

Br.
Håkon

2013/9/15 Thomas Bergo <thomas.bergo at gmail.com>

> Finally got some time to work on the i-Miev implementation.
>
> But I'm facing some issues setting up the car module.
> - SMS is working and are able to send messages to the car module and get
> answers.
> - Problem getting the GPRS to work. Get "Not connected" and "Not connected
> (0x0041) when sending GPRS?
> - No connection from the iOS app to server. Only red flashing antenna.
>
> Any advise?
>
>
> Still has some debugging to do on the i-Miev code, as i'm only get "SOC:
> 0%" from STAT?
>
> Regards, Thomas
>
>
> 2013/5/1 Mark Webb-Johnson <mark at webb-johnson.net>
>
>>
>> I've created a stub file (vehicle_mitsubishi.c), and pushed to github. If
>> you pull head you'll get it. This is just a stub. You'll need to setup the
>> CAN IDs you want to receive (in the filters), and then add the decoding
>> logic to update the car_* variables.
>>
>> Regards, Mark.
>>
>> Regards, Mark.
>>
>> On 30 Apr, 2013, at 5:29 AM, Thomas Bergo <thomas.bergo at gmail.com> wrote:
>>
>> Hi,
>>
>> So far the following CAN messages is discovered by Priusfan published on
>> myimiev forum:
>>
>> SOC
>> RPM
>> Range
>> Battery current
>> Battery voltage
>> Speed
>> Odo
>> Battery cell voltage
>> Battery cell temperature
>>
>> So we still have to find Car On/Off and the charging status.
>>
>> Those messages are available as Mitsubishi has made a CAN Gateway where
>> those data is provided.
>> http://www.pref.nagasaki.jp/ev/ev&its/120614/navi/gateway_gaiyou.pdf
>>
>>
>> Regarding the two-character abbreviation I think Brand-Model (MI) as TR
>> and RT is most intuitive. So my vote goes to MI.
>>
>> I'm interested in using the OVMS v1 HW for logging of CAN messages. How
>> to pay for postage?
>>
>> Regards, Thomas
>>
>>
>> mandag 29. april 2013 skrev Mark Webb-Johnson følgende:
>>
>>> Thomas,
>>>
>>> Earlier this year, Matt Beard mentioned he was interested in doing
>>> i-Miev support, but I'm not sure of his status. He is on this list, so
>>> should see this. There are also several OVMS users who have that car in
>>> their stable, so the requirement is definitely there.
>>>
>>> It is probably worth firstly doing a quick feasibility check, to see
>>> what level of OVMS support is possible:
>>>
>>> Firstly, What are the specs for the CAN bus? What baud rate is it, and
>>> what is the connector? There are  just three messages that are key to
>>> feasibility:
>>>
>>>
>>>    1. SOC - battery state of charge - *car_SOC*
>>>       2. Car On/Off (ignition switch, or Park/Drive gear lever) - *car_doors1
>>>       [bit7]*
>>>       3. Car Charging (true or false) - *car_doors1 [bit 4]*
>>>
>>>
>>> If those three are available, and readable by the OVMS hardware, then
>>> the project is most likely feasible. There are lots of other parameters
>>> (range, temperature, odometer, speed, vin, tpms, etc) that are nice to
>>> have, but are either optional (nice-to-have) or can generally be derived
>>> from these three key messages - so long as they can be found. For example,
>>> on the Volt/Ampera we don't know the detailed charge messages, but do know
>>> whether the car is charging or not - we can assume charge interrupted if
>>> the charge finishes before 95% complete. Similarly, if the range of the car
>>> is XXkm, we can estimate the current range based on XX * SOC%. If the car
>>> has no GPS details on the CAN bus, then we can use the GPS in the OVMS
>>> module itself.
>>>
>>>
>>> What vehicle two-character abbreviation do you think is suitable: IM or
>>> MI? Examples are RT (Renault Twizy), VA (Volt/Ampera), TR (Tesla Roadster).
>>>
>>> If you can let me have the can bus specs and information on the above 3
>>> messages, I will create you a stub vehicle implementation.
>>>
>>> Regards, Mark.
>>>
>>> P.S. With reference to the development guide (
>>> https://raw.github.com/markwj/Open-Vehicle-Monitoring-System/master/docs/OVMS_Development.pdf),
>>> these are the current set of parameters that OVMS supports.
>>>
>>> Vehicle Module Development Checklists Development Checklists
>>>
>>> You can use these checklists to know what vehicle parameters the OVMS
>>> system supports, and how you can map a specific vehicle to these.
>>>
>>> *Parameter*
>>>
>>> *Purpose*
>>>
>>> *Vehicle Support Notes*
>>>
>>> * *
>>>
>>> *Vehicle Identification*
>>>
>>> car_type
>>>
>>> Vehicle type identified
>>>
>>>
>>> car_vin
>>>
>>> Vehicle VIN
>>>
>>>
>>>
>>>
>>> *Parameter*
>>>
>>> *Purpose*
>>>
>>> *Vehicle Support Notes*
>>>
>>> * *
>>>
>>> *GPS Status*
>>>
>>> Vehicle GPS
>>>
>>> Does the vehicle have a built-in GPS? If so, complete the following.
>>>
>>>
>>> car_gpslock
>>>
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