Kostal Pico MP: add grid (#29077)

templates/definition/meter/kostal-piko-mp-plus.yaml

@@ -8,14 +8,19 @@ products:
       generic: coolcept fleX
 params:
   - name: usage
-    choice: ["pv"]
+    choice: ["grid", "pv"]
   - name: host
 render: |
   type: custom
   power:
   {{- if eq .usage "pv" }}
-    # PV
     source: http
     uri: http://{{ .host }}/measurements.xml
     jq: .root.Device.Measurements.Measurement[] | select(.attrType == "AC_Power") | if has ("attrValue") then .attrValue else "0" end | tonumber
   {{- end }}
+  {{- if eq .usage "grid" }}
+    source: http
+    uri: http://{{ .host }}/measurements.xml
+    jq: .root.Device.Measurements.Measurement[] | select(.attrType == "GridPower") | if has ("attrValue") then .attrValue else "0" end | tonumber
+    scale: -1
+  {{- end }}