feat(asset_tracker_v2+AWS): add solar shield data

lwm2m/14210.ts

@@ -15,6 +15,12 @@ export type SolarCharge_14210 = LwM2MObject & {
 		 * The current gain from the solar shield, measured in mA. Example: 3.123, -0.0032.
 		 */
 		0: number
+		/**
+		 * Voltage (V)
+		 *
+		 * CDATA[Battery voltage in Volt. Examples: 2.754, 3.3.
+		 */
+		1?: number
 		/**
 		 * Timestamp (Time)
 		 *

lwm2m/14210.xml

@@ -18,6 +18,16 @@
         <Units>mA</Units>
         <Description><![CDATA[The current gain from the solar shield, measured in mA. Example: 3.123, -0.0032.]]></Description>
       </Item>
+      <Item ID="1">
+        <Name>Voltage</Name>
+        <Operations>R</Operations>
+        <MultipleInstances>Single</MultipleInstances>
+        <Mandatory>Optional</Mandatory>
+        <Type>Float</Type>
+        <RangeEnumeration/>
+        <Units>V</Units>
+        <Description><![CDATA[Battery voltage in Volt. Examples: 2.754, 3.3.]]></Description>
+      </Item>
       <Item ID="99">
         <Name>Timestamp</Name>
         <Operations>R</Operations>

models/asset_tracker_v2+AWS/transformers/solar.md

@@ -0,0 +1,58 @@
+---
+type: shadow
+---
+
+# Solar shield
+
+Data from the solar shield:
+https://www.nordicsemi.com/Nordic-news/2023/08/exegers-powerfoyle-shield-enables-unlimited-battery-life-in-development-projects-using-thingy91
+
+## Match Expression
+
+```jsonata
+$exists(state.reported.sol)
+```
+
+## Transform Expression
+
+```jsonata
+[
+    {"bn": 14210, "n": 0, "v": state.reported.sol.v.gain, "bt": state.reported.sol.ts },
+    {"n": 1, "v": state.reported.sol.v.bat }
+]
+```
+
+## Input Example
+
+```json
+{
+  "state": {
+    "reported": {
+      "sol": {
+        "v": {
+          "gain": 4.391489028930664,
+          "bat": 3.872000217437744
+        },
+        "ts": 1699050063028
+      }
+    }
+  }
+}
+```
+
+## Result Example
+
+```json
+[
+  {
+    "bn": 14210,
+    "n": 0,
+    "v": 4.391489028930664,
+    "bt": 1699050063028
+  },
+  {
+    "n": 1,
+    "v": 3.872000217437744
+  }
+]
+```