added lighting settings to UI and prefs

analog_system_monitor_arduino/Ui.cpp

@@ -96,6 +96,24 @@ void calOverrideSwitchCallback(Control *sender, int type) {
         }
     }
 }
+void lightingSaveCallback(Control *sender, int type) {
+    if (type != B_UP) return;  // avoid double-trigger
+
+    prefs.putUChar("light_hue",    lightingHue);
+    prefs.putUChar("light_sat",    lightingSaturation);
+    prefs.putUChar("light_bright", lightingBrightness);
+
+    Serial.printf("Lighting saved (0–255): H=%d S=%d B=%d\n",
+                  lightingHue, lightingSaturation, lightingBrightness);
+}
+
+static int toSlider(uint8_t v) {
+    return (int)((v / 255.0f) * 100.0f);
+}
+
+static uint8_t fromSlider(int v) {
+    return (uint8_t)((v / 100.0f) * 255.0f);
+}
 
 // -------------------------------
 // UI init
@@ -213,13 +231,58 @@ void uiInit(uint16_t& tabSettings, uint16_t& tabLighting, uint16_t& tabCalibrati
       restartCallback
   );
 
-  // Lighting tab placeholder
+  // -------------------------------
+  // Lighting Controls
+  // -------------------------------
+
+  // Hue slider (0–360)
   ESPUI.addControl(
-      ControlType::Label,
-      "Lighting Placeholder",
-      "Coming soon...",
+      ControlType::Slider,
+      "Hue",
+      String(toSlider(lightingHue)),
+      ControlColor::Sunflower,
+      tabLighting,
+      [](Control *sender, int type) {
+          int sliderVal = sender->value.toInt(); // 0–100
+          lightingHue = fromSlider(sliderVal); // convert to 0–255
+          Serial.printf("Lighting Hue changed (RAM only): %d\n", lightingHue);
+      }
+  );
+
+  // Saturation slider (0–100)
+  ESPUI.addControl(
+      ControlType::Slider,
+      "Saturation",
+      String(toSlider(lightingSaturation)),
+      ControlColor::Carrot,
+      tabLighting,
+      [](Control *sender, int type) {
+          int sliderVal = sender->value.toInt(); // 0–100
+          lightingSaturation = fromSlider(sliderVal);
+          Serial.printf("Lighting Saturation updated (RAM only): %d\n", lightingSaturation);
+      }
+  );
+
+  // Brightness slider (0–100)
+  ESPUI.addControl(
+      ControlType::Slider,
+      "Brightness",
+      String(toSlider(lightingBrightness)),
       ControlColor::Emerald,
-      tabLighting
+      tabLighting,
+      [](Control *sender, int type) {
+          int sliderVal = sender->value.toInt(); // 0–100
+          lightingBrightness = fromSlider(sliderVal);
+          Serial.printf("Lighting Brightness updated (RAM only): %d\n", lightingBrightness);
+      }
+  );
+  ESPUI.addControl(
+      ControlType::Button,
+      "Save Lighting Settings",
+      "Save",
+      ControlColor::Emerald,
+      tabLighting,
+      lightingSaveCallback
   );
 
   // -------------------------------