[Ovmsdev] OVMS v2.5.3 CHARGEBY doesn't seem to have any effect

Mark Webb-Johnson mark at webb-johnson.net
Tue Sep 24 21:33:33 HKT 2013

I found a bug (the usual byte overflow without an integer cast on an 8 bit processor) in the code to set timezone. It only appeared with timezones >4 hours from GMT.

The timed charge itself seemed to work, just at the wrong time :-(

I've committed this fix to github, plus a few other minor fixes, and will test in my car tomorrow.

Regards, Mark.

On 23 Sep, 2013, at 2:47 PM, Mark Webb-Johnson <mark at webb-johnson.net> wrote:

> Curt,
> If, for example, you are 5 hours west of GMT, you should set timezone to -05:00. That appears to be what you have set.
> After setting a 'ACC PARAMS CHARGEBY 08:00', the 'ACC STAT' should show '08:00:00'. If it doesn't, something is wrong.
> Can you also set the chargelimit (even if it is the same as the wall limit) - that is required in order to be able to estimate charge time.
> Regards, Mark.
> On 23 Sep, 2013, at 5:17 AM, Curt Harpold <curt.harpold at gmail.com> wrote:
>> Mark,
>> Sorry for all of the emails, I just figured you would want to know how testing is going.
>> Never mind the earlier ones - TPMS data has re-appeared. I think that I needed to do a drive after the module was re-installed to get the data read in (not sure about that). I have opted in to charge logging, so you can see what is happening.
>> Output of "SMS STAT" for the specified location
>> STAT?
>> Standard - Charging
>>  232V/40A
>>  Full: 88 mins
>>  SOC: 73%
>>  Ideal Range: 133 mi
>>  Est. Range: 125 mi
>>  ODO: 22,715.3 mi
>>  CAC: 147.76
>> ACC Status #1
>>  39.072536, -77.131168
>>  Enabled
>>  Cooldown
>>  Charge by time 03:44:00
>>  Mode: standard (0A)
>> Your vehicle id
>> Output of base64 parameter string (from the cellphone app)
>> Date/Time you entered the ACC location (with timezone)
>> 22 September 2013 15:41 EST
>> Date/Time you plugged in at the ACC location (with timezone)
>> 22 September 2013 approx 16:45 EST
>> In the smartphone app, call up the Features and Parameters screens (so the server logs those, and I can check)
>> Done.
>> Description of the problem you have
>> I set the ACC params for Cooldown, Chargeby 08:00, and Standard mode. When I plugged in, the charge started immediately, with no cooldown phase (probably expected, since the battery is already below the threshold). Further attempt to request a cooldown made no change. Standard mode charge proceeded, even though I would have expected a timed charge to start some time tomorrow morning (and the STAT? command now reports time to full at just 88 minutes).
>> Also, I set CHARGEBY for 08:00, but the ACC STAT return seems to indicate it is set for 44 minutes after the time specified. If it were working, it would be late.
>> Now that I look at it again, I don't understand the time setting at all. I followed your insructions to use a leading "-" as I am West of GMT. I would expect the reported CHARGEBY time to be either 08:00 (local) or 13:00 (GMT), but I'm seeing 03:44.
>> Many thanks - will try to help with any testing you need in a timely manner.
>> ......curt
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>> OvmsDev at lists.teslaclub.hk
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