From d0c9a7c4cc92e64c2ccfb20a3a53486bca83ade8 Mon Sep 17 00:00:00 2001
From: GW_MC <72297530+GWMCwing@users.noreply.github.com>
Date: Mon, 2 Feb 2026 21:17:39 +0800
Subject: [PATCH] update display only necessary

---
 main/ui/apps/iotdis/ui/main_handler.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/main/ui/apps/iotdis/ui/main_handler.cpp b/main/ui/apps/iotdis/ui/main_handler.cpp
index 073d897..08a14ba 100644
--- a/main/ui/apps/iotdis/ui/main_handler.cpp
+++ b/main/ui/apps/iotdis/ui/main_handler.cpp
@@ -109,13 +109,21 @@ void MainUIHandler::on_status_update_(StatusUpdateEventData data) {
   ESP_LOGI(TAG, "on_status_update_ called with state: %d", data.state);
 
   // Update state in thread-safe manner
+  bool update_ui = false;
   if (state_mutex_ && xSemaphoreTake(state_mutex_, pdMS_TO_TICKS(100)) == pdTRUE) {
+    if (data.state != current_state_) {
+      update_ui = true;
+    }
     current_state_ = data.state;
     xSemaphoreGive(state_mutex_);
     ESP_LOGI(TAG, "State updated in mutex");
   }
 
   // Update UI
+  if (!update_ui) {
+    ESP_LOGI(TAG, "State unchanged, skipping UI update");
+    return;
+  }
   ESP_LOGI(TAG, "Calling update_ui_()");
   update_ui_();
   ESP_LOGI(TAG, "on_status_update_ complete");
@@ -127,6 +135,7 @@ void MainUIHandler::update_ui_() {
   if (main_ui_) {
     StatusUpdateEventData::VoiceState state;
     if (state_mutex_ && xSemaphoreTake(state_mutex_, pdMS_TO_TICKS(100)) == pdTRUE) {
+
       state = current_state_;
       xSemaphoreGive(state_mutex_);
     } else {