Start charging with DKV @home charging point functionality

[emi09]

Hi,
I have discovered a new feature in the DKV App: "@home charging point," which allows you to start charging without using DKV card authentication on the wallbox.

The app uses this API: https://my.dkv-mobility.com/auth/realms/dkv/.well-known/openid-configuration.
It would be great to integrate this functionality into EVCC instead of using the RFID card.
best regards
emi

[GrimmiMeloni]

The given link is not an API definition, but simply the configuration discovery endpoint for the openID authentication.
Can you find an actual API that allows to start the charge? I had a quick look at https://api-portal.dkv-mobility.com/apis but these all seem to simply provide bulk data and after the fact statistics. I could not find an API that actually allows to trigger anything against any charger.

[emi09]

I just tried to catch it from the App: https://my.dkv-mobility.com/apidnext/emobility/at-home/mobile/api/station-management/session/start
Not sure if there is public documentation for that.

In addition: As POST see JSON
{ "evseUid": "<ID>", "locationId": "<ID>", "paymentMethodId": "<ID>" }

[GrimmiMeloni]

If you can completely reverse engineer the required flow we might put this in.
For Easee we built something similar (authorize: true).

[emi09]

OK, I tried to send some requests with postman with success! :) Check my postman collection with requests and settings in the attachment please.
Mobility Public.postman_collection.json

Short howto description:

1. Open postman and import my collection
2. You need to authenticate with your dkv login data. Navigate to the head "Mobility Public" and go to the tab "Authorization"
3. Scroll down and click on "Get New Access Token". Popup for login should appear, enter you credentials
4. Execute "UserInfo" request and copy the value of preferred_username
5. Execute "GetChargePoints" request and copy value of locationIdCa
6. Execute "GetCards" request and copy value of id
7. Navigate to "Session_Start" request and paste the copied values into the body, then execute
8. Wallbox should start loading without RFID-Card authentication

In addition:
It is also possible to stop the charing session with request "Session_Stop". But for that a x-api-key value is necessary, but this value is possibly personalized? Therefore this is removed in my export. Maybe you can "catch" your own value and we can check if this is different ;)

I hope this will help. Let me know if it's working for you.
regards emi

[GrimmiMeloni]

I hope this will help. Let me know if it's working for you.

Just to prevent misunderstandinds. I don't own such a charger, so I cannot test nor implement this.