Tests: 
Controller for the SMA EV Charger 7.4 / 22
At this stage, you can install ioBroker using the expert mode. When in expert mode, go to adapters and pick "install from URL" in the menu. In the third tab, you can paste the URL of this repo:
https://github.com/drb-germany/ioBroker.smaevcharger
Configuration requires the IP and username/password of the SMA EV charger in your network. Please note that the user needs administrator rights on the charger to change values. The adapter will read values from and write values to the charger in regular intervals (see configuration).
The parameters allowCharging, lockStation and maximumCurrent can be changed in the adapter. Any changes will be written to the charger in the write cycle. Until then, no changes will take place! This is done to protect the charger from too many changes. If the adapter receives too many changes, they will be ignored, details on this are not given by SMA. However, please not that it is well known that currents and on/off values should not be changed too frequently during the charging of the vehicle.
By setting the value forceChanges to true, any pending changes will be written immediately. Use with care.
At this stage this module is tested with the charger in "fast charge" mode. Putting it in optimized charging mode will likely ignore the values. More information will be given after testing.
- (Martin) initial release
MIT License
Copyright (c) 2023 Martin
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