Fronius inverter JSON integration

[Erwin van der Zwart]

Code:

-- Load libs require('socket.http') require('json') -- Set timeout socket.http.TIMEOUT = 15 -- Get data from API --data = socket.http.request('http://192.168.1.182/solar_api/v1/GetInverterRealtimeData.cgi?scope=System&collection=CommonInverterData') --data = socket.http.request('http://192.168.1.182/solar_api/v1/GetInverterRealtimeData.cgi?scope=System&collection=CumulationInverterData') --data = socket.http.request('http://192.168.1.182/solar_api/v1/GetInverterRealtimeData.cgi?scope=System&collection=3PInverterData') data = socket.http.request('http://192.168.1.182/solar_api/v1/GetInverterRealtimeData.cgi?scope=System') if data then   function sum(t)     local sum = 0     for k,v in pairs(t) do         sum = sum + v     end     sum = math.round(sum*0.001,2)     return sum     end   decdata = json.pdecode(data)   totaldata = decdata.Body.Data.TOTAL_ENERGY.Values   yeardata = decdata.Body.Data.YEAR_ENERGY.Values   daydata = decdata.Body.Data.DAY_ENERGY.Values   currentdata = decdata.Body.Data.PAC.Values   total = sum(totaldata)   year = sum(yeardata)   day = sum(daydata)   current = sum(currentdata)   previoustotal = storage.get('froniustotal')   if previoustotal then     if total > previoustotal then       grp.checkupdate('32/1/5',total)         previoustotal = storage.set('froniustotal', total)     end   else     storage.set('froniustotal', total)   end   grp.checkupdate('32/1/6',year)   grp.checkupdate('32/1/7',day)   grp.checkupdate('32/1/8',current) end

I use the storage to check the previous total, as the inverter can go in sleep mode when there is no sun, the API is not sending a valid value at that moment and i dont want to write a invalid value to my trend. So this part is needed if you might see strange values when removing it (: