[Ovmsdev] A query on vehicle type switch (and failure)

Michael Geddes frog at bunyip.wheelycreek.net
Mon Nov 27 17:56:49 HKT 2023


I was also thinking adding this:

  else
    {
    StandardMetrics.ms_v_type->Clear();
    }

On Mon, 27 Nov 2023 at 15:25, Mark Webb-Johnson <mark at webb-johnson.net>
wrote:

> Michael,
>
> I’m not too bothered about it at the moment, but if you would to put in a
> PR for treating the “if (m_currentvehicle)” as set ready, set type, signal,
> and then an else for set type “” only, that would be acceptable to me.
>
> Regards, Mark.
>
> On 27 Nov 2023, at 3:14 PM, Michael Geddes <frog at bunyip.wheelycreek.net>
> wrote:
>
> So,  would you be better  if (in the case of null vehicle)
> m_currentVehicletype was also set to "" and we didn't fire the signal
> event?
>
>  I was doing some other work in the area and noticed this.
>
> //.ichael
>
> On Mon, 27 Nov 2023 at 07:37, Mark Webb-Johnson <mark at webb-johnson.net>
> wrote:
>
>> Michael,
>>
>> From the condition in the v_type->SetValue, the type is only set
>> if NewVehicle(type) is not NULL.
>>
>> So the question is whether we should raise the signal or not? I guess
>> that is debatable, and probably better not to (as otherwise it is being
>> raised with type as the parameter, but the type is not actually being set
>> as the vehicle type).
>>
>> Regards, Mark
>>
>> On 26 Nov 2023, at 9:26 AM, Michael Geddes <frog at bunyip.wheelycreek.net>
>> wrote:
>>
>> This code is from OvmsVehicleFactor::SetVehicle
>>
>>   m_currentvehicle = NewVehicle(type);
>>   if (m_currentvehicle)
>>   {
>>   m_currentvehicle->m_ready = true;
>>   }
>>   m_currentvehicletype = std::string(type);
>>   StandardMetrics.ms_v_type->SetValue(m_currentvehicle ? type : "");
>>   MyEvents.SignalEvent("vehicle.type.set", (void*)type, strlen(type)+1);
>>
>> My question is about what happens when NewVehicle() returns NULL.
>>
>> Should  m_currecntvehicletype,  v.type  and the SignalEvent  all be set
>> as blank?  Any particular reason why only the v.type is set as blank?
>>
>> //.ichael
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