diff --git a/rust/src/main.rs b/rust/src/main.rs
index d35aec3..07ecfe4 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -63,10 +63,15 @@ enum WaitType {
 }
 
 #[derive(Serialize, Deserialize, Debug, PartialEq, Default)]
+/// Light State tracking data for mqtt
 struct LightState {
+    /// led is on
     active: bool,
+    /// led should not be on at this time of day
     out_of_work_hour: bool,
+    /// battery is low so do not use led
     battery_low: bool,
+    /// the sun is up
     is_day: bool,
 }