The get and post ( option 2 ) is far out of my league.
For displaying the live data,
I made a staticcontent point in a view and put a simple xml to colum code in it and that did not work.
The solarpanel has also a server that wil send the data to an java applet.
this is how that works:
In a static contens i place the code that loads a java applet from the tomcat root dir, that java applet connects to the server and displays the data
So displaying is possible, but not from all computers, some computers don't display the java applet, or a firewall prevents the connection to the server.
Maybe that server and java applet can be used for a datasource.
The program i use for the solarpanels is sunnydatacontrol 3.9.3 and the SDCagent both programs are from sma.
It would be a big help if you can give a big push in the right direction for the post and get option.