[Ovmsdev] Doubs in implementation with nodejs.

Thu Aug 4 11:36:33 HKT 2022

If there is a better library to try let me know.  We tried a couple before
we landed on that one.

We only test with one vehicle - ET225567

This is my fleet vehicle, so there’s a decent chance it will be in use.

Tomorrow we’ll try some tests and send some timestamps

On Wed, Aug 3, 2022 at 10:31 PM Mark Webb-Johnson <mark at webb-johnson.net>
wrote:

> Gregg,
>
> OK. That is clearer. At a glance, the library seems ok, but I haven’t
> worked with that one previously, or even knew of it.
>
> Can you let me know a vehicle ID, and UTC timestamp, of one of your
> connections and attempted unlocks? I can then check the server logs.
>
> Or let me know vehicle ID, try it now, and I can monitor.
>
> Regards, Mark.
>
>
> On 4 Aug 2022, at 11:21 AM, gregg hansen <gregg at rabbitev.com> wrote:
>
> This is the library we are using it encrypt some data and use the MP
> commands to call some functionalities to the car with this we retrieve some
> data like the battery status.
>
> NPM Lib
> https://www.npmjs.com/package/ovms-client?activeTab=readme
> Github
> https://github.com/birkir/ovms-client
> (in the Github is an instruction that explains how does the library works)
>
> It has a function to send shell commands like 'stat' commands, but when we
> send a command looks like the car is receiving the command but it seems
> like the car gets the commands but does not interact with it.
>
> There is other function that allows us to send raw data to the car that is
> the MP commands, but in this case when I send a Raw command this don't
> connect with the car and its stock loading waiting for a response that is
> never returned.
>
> I have been trying to make a script that lets me connect to the car, but I
> only could connect to the ovms-server that let us make the connection with
> the car, but I can not set the carId and password on that socket to make
> the connection to the car.
>
> We are using OVMS v2 in the cars.
>
> Thanks for your help and we are going to be glad to read you answers
>
> On Wed, Aug 3, 2022 at 10:07 PM Mark Webb-Johnson <mark at webb-johnson.net>
> wrote:
>
>> Gregg,
>>
>> We really need to know exactly what he is doing, and with what protocols.
>>
>> From the way you seem to describe it, you:
>>
>>
>>    1. Have a custom app, in react native
>>    2. You have a custom server, in NodeJS
>>    3. You presumably have some custom protocol/api between your app and
>>    server
>>    4. Your NodeJS server is talking to the OVMS server using your own
>>    implementation of v2 protocol
>>
>>
>> Is that correct? If so, then #4 is the only issue. The V2 protocol is
>> fairly well documented, here:
>>
>> https://docs.openvehicles.com/en/latest/protocol_v2/index.html
>>
>>
>> It is proprietary and the initial negotiation is complicated, but if you
>> have established the crypto connection and received the data, then you have
>> done the hard part. Issuing commands should be easy.
>>
>> In v2 protocol, locking/unlocking is performed via the “C” command.
>>
>> Probably easiest to look at the sample code in the iOS or Android Apps to
>> see how that is done. For iOS, see:
>>
>>
>> https://github.com/openvehicles/Open-Vehicle-iOS/blob/master/OpenVehicleApp/ovms/ovmsAppDelegate.m
>>
>> (The commandIssue method, and how it is called)
>>
>>
>> Regards, Mark.
>>
>> On 3 Aug 2022, at 11:03 PM, gregg hansen <gregg at rabbitev.com> wrote:
>>
>> Pablo has not been able to access the list.  He is getting authentication
>> errors, so while he works through that I thought I would answer for him...
>>
>> "The MP commands are the raw data I am trying to send to the car to open
>> and close the car."
>>
>> The devices are using the V2 server, so I think fixed MP commands make
>> the most sense.  Pablo is trying to figure out how to make that work, and
>> so far has not been successful.
>>
>>
>>
>> On Sun, Jul 31, 2022 at 2:26 AM Michael Balzer <dexter at expeedo.de> wrote:
>>
>>> Pablo,
>>>
>>> a bit more information on how you connect to the car would be helpful
>>> here.
>>>
>>> Arbitrary remote shell command execution is supported by the module's
>>> HTTP API (/api/execute), the module's SSH server, the "V2 protocol" server
>>> via MP command 7 and any "V3" (MQTT) server via the /client/command topic
>>> scheme. Plus there's a secondary (non-standard) HTTP command API available
>>> on my server ovms.dexters-web.de (public API of my custom web shell).
>>>
>>> Lock & unlock are also available as fixed MP commands (20,22) on a V2
>>> server, along with a set of other standard App calls. These do not run via
>>> the shell but translate to direct internal execution.
>>>
>>> Command execution has not yet been implemented for the "V2" server's
>>> HTTP API. But you can of course implement that if you use that API.
>>>
>>> Docs:
>>>
>>>    -
>>>    https://docs.openvehicles.com/en/latest/components/ovms_webserver/docs/index.html#authorization
>>>    -
>>>    https://docs.openvehicles.com/en/latest/userguide/console.html#ssh-console
>>>    -
>>>    https://docs.openvehicles.com/en/latest/protocol_v2/commands.html#execute-sms-command
>>>       -
>>>       https://docs.openvehicles.com/en/latest/protocol_v2/commands.html#lock-car
>>>       -
>>>       https://docs.openvehicles.com/en/latest/protocol_v2/commands.html#unlock-car
>>>    -
>>>    http://lists.openvehicles.com/pipermail/ovmsdev/2018-July/012641.html
>>>    -
>>>    http://lists.openvehicles.com/pipermail/ovmsdev/2018-July/012696.html
>>>    -
>>>    https://docs.openvehicles.com/en/latest/protocol_httpapi/requests.html#not-yet-implemented
>>>
>>> Which one are you referring to?
>>>
>>> Regards,
>>> Michael
>>>
>>>
>>> Am 29.07.22 um 19:28 schrieb Pablo Cabrera:
>>>
>>> Hello OVMS team, we are currently working with an implementation with
>>> OVMS in a react native app with a NodeJS back-end.
>>> Currently we can connect with the cars and rescue some data like the
>>> status of the battery or GPS location, but now we need to send commands to
>>> lock and unlock the cars from the same app, when we send a command I get a
>>> response that the command is received in the car, but the command is not
>>> executed in the bash.
>>>
>>> I don't know if you can send me more info about how to make the car
>>> receive bash commands from remote connections, or how can I send it from
>>> the NodeJs server into the bash of the car.
>>>
>>> Thanks for your time and help.
>>>
>>> _______________________________________________
>>> OvmsDev mailing listOvmsDev at lists.openvehicles.comhttp://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>>
>>> --
>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal <https://www.google.com/maps/search/Helkenberger+Weg+9+*+D-58256+Ennepetal?entry=gmail&source=g>
>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>
>>> _______________________________________________
>>> OvmsDev mailing list
>>> OvmsDev at lists.openvehicles.com
>>> http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>>>
>>
>>
>> --
>>
>> RabbitEV
>> Driving Electric Cars
>> RabbitEV.com <http://rabbitev.com/>
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