Update Ecovacs documentation (#33075)

Co-authored-by: Michael <35783820+mib1185@users.noreply.github.com>
Co-authored-by: Robert Resch <robert@resch.dev>

source/_integrations/ecovacs.markdown

@@ -140,6 +140,54 @@ Alternatively, you can use the `ecovacs_error` event to watch for errors. This e
 
 Finally, if a vacuum becomes unavailable (usually due to being idle and off its charger long enough for it to completely power off,) the vacuum's `status` attribute will change to `offline` until it is turned back on.
 
+### Getting device and chargers coordinates
+
+The integration has a `raw_get_positions` service to retrieve device and chargers coordinates.
+
+Example:
+
+```yaml
+service: ecovacs.raw_get_positions
+target:
+  entity_id: vacuum.deebot_n8_plus
+```
+
+{% details "Service response example" %}
+The service call returns a raw response with a list of coordinates available in `resp -> body -> data` like this:
+
+```yaml
+vacuum.deebot_n8_plus:
+  ret: ok
+  resp:
+    header:
+      pri: 1
+      tzm: 480
+      ts: "1717748487712"
+      ver: 0.0.1
+      fwVer: 1.2.0
+      hwVer: 0.1.1
+    body:
+      code: 0
+      msg: ok
+      data:
+        deebotPos:
+          x: 1
+          y: 5
+          a: 85
+          invalid: 0
+        chargePos:
+          - x: 5
+            y: 9
+            a: 85
+            t: 1
+            invalid: 0
+        mid: "200465850"
+  id: 5o81
+  payloadType: j
+```
+
+{% enddetails %}
+
 ## Self-hosted configuration
 
 Depending on your setup of the self-hosted instance, you can connect to the server using the following settings: