diff --git a/Drivers/BSP/UI/ui_menu.c b/Drivers/BSP/UI/ui_menu.c
index c3162012..5897ddea 100644
--- a/Drivers/BSP/UI/ui_menu.c
+++ b/Drivers/BSP/UI/ui_menu.c
@@ -11,6 +11,9 @@
 
 #include "lvgl.h"
 
+#define DBG_TAG "[UI_MENU]"
+#include "dbg_log.h"
+
 /* 菜单节点表（简化自 DTU-HMI menuTab）：层级 + 名称 */
 typedef struct {
     uint8_t level;        /* 0=根页面, 1..3=子层次 */
@@ -87,9 +90,9 @@ static const ui_menu_node_t g_menu_tab[] = {
  * 入口参数：无
  * 返回值：0 - 成功，其他 - 失败（对象创建失败）
  * 限定条件：ui_port_init() 已成功调用，活动屏幕存在
- * 函数说明：1. 依据紧凑节点表按层级生成 lv_menu 页面与返回栈
- *           2. 将菜单对象加入默认输入组，支持远端按键导航
- *           3. 叶子节点挂占位页，等待后续逐项填充具体功能
+ * 函数说明：1. 仅构建主页面（根页 + 一级菜单项），子树暂不构建以控制内存占用
+ *           2. 文本全部使用静态字符串（不 strdup），减少 LVGL 堆分配
+ *           3. 构建中监控 LVGL 池空闲内存，不足时中止而非崩溃
  */
 int ui_menu_init(void)
 {
@@ -101,44 +104,46 @@ int ui_menu_init(void)
     lv_menu_set_mode_root_back_button(menu, LV_MENU_ROOT_BACK_BUTTON_ENABLED);
     lv_group_add_obj(lv_group_get_default(), menu);
 
+    /* 仅构建主页面：根页 + 一级菜单项（静态文本，不建子树，省内存） */
+    lv_obj_t *root_page = lv_menu_page_create(menu, NULL);
+    if (root_page == NULL) {
+        return -1;
+    }
+    lv_menu_set_page_title_static(root_page, "主界面");
+
+    lv_mem_monitor_t mon;
+    lv_mem_monitor(&mon);
+    DBG_INFO("menu build start: total=%u free=%u big=%u",
+             (unsigned)mon.total_size,
+             (unsigned)mon.free_size, (unsigned)mon.free_biggest_size);
+
     uint32_t n = sizeof(g_menu_tab) / sizeof(g_menu_tab[0]);
-    lv_obj_t *root_page = NULL;
-    lv_obj_t *parent_stack[4] = {NULL, NULL, NULL, NULL};
+    for (uint32_t i = 1; i < n; i++) {
+        if (g_menu_tab[i].level != 1) {
+            continue;   /* 只显示一级菜单项，子树暂不构建 */
+        }
+
+        /* 内存警戒：空闲池不足则中止，避免 LVGL 内部 NULL 解引用崩溃 */
+        lv_mem_monitor(&mon);
+        if (mon.free_biggest_size < 1024) {
+            DBG_ERROR("menu mem low: abort at item %u (free=%u big=%u)",
+                     (unsigned)i, (unsigned)mon.free_size,
+                     (unsigned)mon.free_biggest_size);
+            break;
+        }
 
-    for (uint32_t i = 0; i < n; i++) {
-        uint8_t L = g_menu_tab[i].level;
         const char *name = g_menu_tab[i].name;
-
-        if (i == 0) {
-            /* 第 0 节点为根（主界面） */
-            root_page = lv_menu_page_create(menu, name);
-            parent_stack[0] = root_page;
-            continue;
-        }
-
-        /* 当前节点页面 */
-        lv_obj_t *page = lv_menu_page_create(menu, name);
-
-        /* 叶子：页内挂占位内容 */
-        int leaf = (i + 1 >= n) || (g_menu_tab[i + 1].level <= L);
-        if (leaf) {
-            lv_obj_t *ph = lv_menu_cont_create(page);
-            lv_obj_t *pl = lv_label_create(ph);
-            lv_label_set_text(pl, "功能未实现（占位）");
-        }
-
-        /* 挂到父页：level0 直挂根，其余挂到上一级页面 */
-        lv_obj_t *parent = (L == 0) ? root_page : parent_stack[L - 1];
-
-        /* 在父页创建一个容器项，点击加载当前页 */
-        lv_obj_t *item = lv_menu_cont_create(parent);
+        lv_obj_t *item = lv_menu_cont_create(root_page);
         lv_obj_t *lbl = lv_label_create(item);
-        lv_label_set_text(lbl, name);
-        lv_menu_set_load_page_event(menu, item, page);
-
-        parent_stack[L] = page;
+        lv_label_set_text_static(lbl, name);
     }
 
     lv_menu_set_page(menu, root_page);
+
+    lv_mem_monitor(&mon);
+    DBG_INFO("menu build done: total=%u free=%u big=%u used=%u",
+             (unsigned)mon.total_size,
+             (unsigned)mon.free_size, (unsigned)mon.free_biggest_size,
+             (unsigned)(mon.total_size - mon.free_size));
     return 0;
 }
diff --git a/MDK-ARM/STM32F407-Demo/STM32F407-Demo.sct b/MDK-ARM/STM32F407-Demo/STM32F407-Demo.sct
index 8d1bd88b..34f119a4 100644
--- a/MDK-ARM/STM32F407-Demo/STM32F407-Demo.sct
+++ b/MDK-ARM/STM32F407-Demo/STM32F407-Demo.sct
@@ -1,7 +1,7 @@
 ; *************************************************************
 ; *** Scatter-Loading Description File (manual)                ***
-; *** RW_IRAM3(SRAM3) for ucHeap big block. DO NOT let uVision ***
-; *** regenerate this file (keep "Use Memory Layout" unchecked)***
+; *** IRAM1 = SRAM1+SRAM2 128KB continuous RAM.               ***
+; *** No SRAM3 usage (may not exist on clone MCUs).           ***
 ; *************************************************************
 
 LR_IROM1 0x08000000 0x00100000  {    ; load region size_region
@@ -11,11 +11,7 @@ LR_IROM1 0x08000000 0x00100000  {    ; load region size_region
    .ANY (+RO)
    .ANY (+XO)
   }
-  RW_IRAM1 0x20000000 0x00020000  {  ; RW data
-   .ANY (+RW +ZI)
-  }
-  RW_IRAM3 0x20040000 0x00010000  {  ; SRAM3 for ucHeap
-   heap_4.o (+RW +ZI)
+  RW_IRAM1 0x20000000 0x00020000  {  ; SRAM1+SRAM2, 128KB
    .ANY (+RW +ZI)
   }
 }
diff --git a/MDK-ARM/build.bat b/MDK-ARM/build.bat
index 90b93617..98d86c7d 100644
--- a/MDK-ARM/build.bat
+++ b/MDK-ARM/build.bat
@@ -6,7 +6,7 @@ set PROJ=%~dp0STM32F407-Demo.uvprojx
 set LOG=%~dp0build_log.txt
 set TARGET=STM32F407-Demo
 
-"%UV4%" -r "%PROJ%" -t%TARGET% -j0 -o "%LOG%"
+"%UV4%" -b "%PROJ%" -t%TARGET% -j0 -o "%LOG%"
 
 findstr /C:"0 Error(s), 0 Warning(s)" "%LOG%" >nul
 if %ERRORLEVEL% equ 0 (
diff --git a/MDK-ARM/build_log.txt b/MDK-ARM/build_log.txt
index 67facdaf..007d177f 100644
--- a/MDK-ARM/build_log.txt
+++ b/MDK-ARM/build_log.txt
@@ -1,279 +1,8 @@
 *** Using Compiler 'V5.06 update 7 (build 960)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
-Rebuild target 'STM32F407-Demo'
-assembling startup_stm32f407xx.s...
-compiling dma.c...
-compiling i2c.c...
-compiling stm32f4xx_hal_timebase_tim.c...
-compiling stm32f4xx_hal_dma_ex.c...
-compiling gpio.c...
-compiling stm32f4xx_hal_msp.c...
-compiling stm32f4xx_it.c...
-compiling stm32f4xx_hal_dma.c...
-compiling spi.c...
-compiling sys_clock.c...
-compiling stm32f4xx_hal_flash_ex.c...
-compiling stm32f4xx_hal_flash.c...
-compiling stm32f4xx_hal_pwr.c...
-compiling stm32f4xx_hal_pwr_ex.c...
-compiling stm32f4xx_hal_rcc_ex.c...
-compiling stm32f4xx_hal_flash_ramfunc.c...
-compiling stm32f4xx_hal_gpio.c...
-compiling freertos.c...
-compiling usart.c...
-compiling app_main.c...
-compiling main.c...
-compiling stm32f4xx_hal_rcc.c...
-compiling time_sync.c...
-compiling ui_task.c...
-compiling net_task.c...
-compiling stm32f4xx_hal_tim_ex.c...
-compiling lftpd_string.c...
-compiling croutine.c...
-compiling event_groups.c...
-compiling list.c...
-compiling stm32f4xx_hal_tim.c...
-compiling queue.c...
-compiling stream_buffer.c...
-compiling timers.c...
-compiling heap_4.c...
-compiling stm32f4xx_hal_cortex.c...
-compiling tasks.c...
-compiling port.c...
-compiling map.c...
-compiling journal.c...
-compiling ff.c...
-compiling stm32f4xx_hal.c...
-compiling system_stm32f4xx.c...
-compiling test_config.c...
-compiling ch395f_test_task.c...
-compiling stm32f4xx_hal_i2c_ex.c...
-compiling net_test_task.c...
-compiling gd5f_test_task.c...
-compiling cmsis_os2.c...
-compiling sd2506.c...
-compiling rs485.c...
-compiling stm32f4xx_hal_exti.c...
-compiling nand_ftl.c...
-compiling tpafe5160.c...
-compiling lftpd_io.c...
-compiling ch395f.c...
-compiling lv_obj_class.c...
-compiling lftpd_inet.c...
-compiling lv_obj_event.c...
-compiling lv_group.c...
-compiling lv_obj_draw.c...
-compiling net_select.c...
-compiling stm32f4xx_hal_spi.c...
-compiling lv_obj.c...
-compiling gd5f2gq5ue.c...
-compiling stm32f4xx_hal_uart.c...
-compiling lv_obj_property.c...
-compiling net_socket.c...
-compiling lv_obj_id_builtin.c...
-compiling lftpd.c...
-compiling lv_draw_3d.c...
-compiling lv_obj_tree.c...
-compiling lv_obj_style_gen.c...
-compiling stm32f4xx_hal_i2c.c...
-compiling lv_obj_scroll.c...
-compiling lv_draw.c...
-compiling lv_draw_arc.c...
-compiling lv_obj_style.c...
-compiling lv_obj_pos.c...
-compiling lv_refr.c...
-compiling lv_draw_line.c...
-compiling lv_draw_mask.c...
-compiling lv_display.c...
-compiling lv_draw_image.c...
-compiling lv_draw_buf.c...
-compiling lv_draw_vector.c...
-compiling lv_draw_rect.c...
-compiling lv_draw_triangle.c...
-compiling lv_draw_label.c...
-compiling lv_draw_sw_blend.c...
-compiling lv_image_decoder.c...
-compiling lv_draw_sw_blend_to_al88.c...
-compiling lv_draw_sw_blend_to_argb8888_premultiplied.c...
-compiling lv_draw_sw_blend_to_argb8888.c...
-compiling lv_draw_sw_grad.c...
-compiling lv_draw_sw_arc.c...
-compiling lv_draw_sw.c...
-compiling lv_draw_sw_fill.c...
-compiling lv_draw_sw_border.c...
-compiling lv_draw_sw_letter.c...
-compiling lv_draw_sw_mask_rect.c...
-compiling lv_draw_sw_blend_to_l8.c...
-compiling lv_draw_sw_blend_to_i1.c...
-compiling lv_draw_sw_utils.c...
-compiling lv_draw_sw_triangle.c...
-compiling lv_draw_sw_line.c...
-compiling lv_draw_sw_vector.c...
-compiling lv_draw_sw_blend_to_rgb888.c...
-compiling lv_draw_sw_img.c...
-compiling lv_draw_sw_box_shadow.c...
-compiling lv_font.c...
-compiling lv_draw_sw_mask.c...
-compiling lv_draw_sw_transform.c...
-compiling lv_draw_sw_blend_to_rgb565.c...
-compiling lv_draw_sw_blend_to_rgb565_swapped.c...
-compiling storage_test_task.c...
-compiling lv_binfont_loader.c...
-compiling sd2506_test_task.c...
-compiling lv_font_dejavu_16_persian_hebrew.c...
-compiling lv_font_fmt_txt.c...
-compiling lv_font_montserrat_10.c...
-compiling lv_font_montserrat_12.c...
-compiling lv_font_montserrat_14.c...
-compiling lv_font_montserrat_14_aligned.c...
-compiling lv_font_montserrat_16.c...
-compiling lv_font_montserrat_18.c...
-compiling lv_font_montserrat_22.c...
-compiling lv_font_montserrat_20.c...
-compiling lv_font_montserrat_24.c...
-compiling lv_font_montserrat_26.c...
-compiling lv_font_montserrat_28.c...
-compiling lv_font_montserrat_28_compressed.c...
-compiling lv_font_montserrat_30.c...
-compiling lv_font_montserrat_32.c...
-compiling lv_font_montserrat_34.c...
-compiling lv_font_montserrat_36.c...
-compiling lv_font_montserrat_38.c...
-compiling lv_font_montserrat_40.c...
-compiling lv_font_montserrat_44.c...
-compiling lv_font_montserrat_42.c...
-compiling lv_font_montserrat_46.c...
-compiling lv_font_montserrat_48.c...
-compiling lv_font_montserrat_8.c...
-compiling lv_font_simsun_14_cjk.c...
-compiling lv_font_simsun_16_cjk.c...
-compiling lv_font_source_han_sans_sc_14_cjk.c...
-compiling lv_indev_gesture.c...
-compiling lv_font_unscii_16.c...
-compiling lv_font_source_han_sans_sc_16_cjk.c...
-compiling lv_font_unscii_8.c...
-compiling lv_cache_lru_ll.c...
-compiling lv_cache_lru_rb.c...
-compiling lv_cache.c...
-compiling lv_layout.c...
-compiling lv_init.c...
-compiling lv_indev_scroll.c...
-compiling lv_image_cache.c...
-compiling lv_image_header_cache.c...
-compiling lv_cache_entry.c...
-compiling lv_bin_decoder.c...
-compiling lv_grid.c...
-compiling lv_anim_timeline.c...
-compiling lv_flex.c...
-compiling lv_indev.c...
-compiling lv_async.c...
-compiling lv_bidi.c...
-compiling lv_array.c...
-compiling lv_anim.c...
-compiling lv_circle_buf.c...
-compiling lv_color_op.c...
-compiling lv_area.c...
-compiling lv_color.c...
-compiling lv_grad.c...
-compiling lv_iter.c...
-compiling lv_log.c...
-compiling lv_ll.c...
-compiling lv_event.c...
-compiling lv_lru.c...
-compiling lv_matrix.c...
-compiling lv_fs.c...
-compiling lv_math.c...
-compiling lv_templ.c...
-compiling lv_rb.c...
-compiling lv_palette.c...
-compiling lv_style_gen.c...
-compiling lv_text_ap.c...
-compiling lv_profiler_builtin.c...
-compiling lv_style.c...
-compiling lv_cmsis_rtos2.c...
-compiling lv_tree.c...
-compiling lv_text.c...
-compiling lv_utils.c...
-compiling lv_freertos.c...
-compiling lv_linux.c...
-compiling lv_timer.c...
-compiling lv_mqx.c...
-compiling lv_os_none.c...
-compiling lv_pthread.c...
-compiling lv_sdl2.c...
-compiling lv_windows.c...
-compiling lv_rtthread.c...
-compiling lv_os.c...
-compiling lv_mem_core_builtin.c...
-compiling lv_string_builtin.c...
-compiling lv_sprintf_builtin.c...
-compiling lv_sprintf_clib.c...
-compiling lv_mem_core_clib.c...
-compiling lv_string_clib.c...
-compiling lv_tlsf.c...
-compiling lv_mem_core_micropython.c...
-compiling lv_mem_core_rtthread.c...
-compiling lv_sprintf_rtthread.c...
-compiling lv_string_rtthread.c...
-compiling lv_mem_core_uefi.c...
-compiling lv_mem.c...
-compiling lv_3dtexture.c...
-compiling lv_animimage.c...
-compiling lv_tick.c...
-compiling lv_theme_default.c...
-compiling lv_arc.c...
-compiling lv_theme.c...
-compiling lv_theme_simple.c...
-compiling lv_theme_mono.c...
-compiling lv_button.c...
-compiling lv_bar.c...
-compiling lv_calendar_chinese.c...
-compiling lv_calendar_header_arrow.c...
-compiling lv_calendar_header_dropdown.c...
-compiling lv_canvas.c...
-compiling lv_chart.c...
-compiling lv_buttonmatrix.c...
-compiling lv_checkbox.c...
-compiling lv_dropdown.c...
-compiling lv_calendar.c...
-compiling lv_keyboard.c...
-compiling lv_imagebutton.c...
-compiling lv_led.c...
-compiling lv_image.c...
-compiling lv_line.c...
-compiling lv_lottie.c...
-compiling lv_list.c...
-compiling lv_objx_templ.c...
-compiling lv_label.c...
-compiling lv_dropdown_properties.c...
-compiling lv_msgbox.c...
-compiling lv_animimage_properties.c...
-compiling lv_menu.c...
-compiling lv_image_properties.c...
-compiling lv_keyboard_properties.c...
-compiling lv_label_properties.c...
-compiling lv_obj_properties.c...
-compiling lv_style_properties.c...
-compiling lv_roller_properties.c...
-compiling lv_slider_properties.c...
-compiling lv_textarea_properties.c...
-compiling lv_roller.c...
-compiling lv_scale.c...
-compiling lv_slider.c...
-compiling lv_span.c...
-compiling lv_spinbox.c...
-compiling lv_switch.c...
-compiling lv_table.c...
-compiling ui_net_sink.c...
-compiling lv_spinner.c...
-compiling lv_tileview.c...
-compiling lv_tabview.c...
-compiling lv_win.c...
+Build target 'STM32F407-Demo'
 compiling ui_menu.c...
-compiling ui_port.c...
-compiling ui_font_cn_12.c...
-compiling lv_textarea.c...
 linking...
-Program Size: Code=213444 RO-data=9684 RW-data=440 ZI-data=124640  
+Program Size: Code=213580 RO-data=9792 RW-data=440 ZI-data=124640  
 FromELF: creating hex file...
 ".\STM32F407-Demo\STM32F407-Demo.axf" - 0 Error(s), 0 Warning(s).
-Build Time Elapsed:  00:00:26
+Build Time Elapsed:  00:00:07
diff --git a/STM32F407-Demo.ioc b/STM32F407-Demo.ioc
index a36c7bb6..7606de09 100644
--- a/STM32F407-Demo.ioc
+++ b/STM32F407-Demo.ioc
@@ -70,10 +70,10 @@ Dma.USART1_TX.0.PeriphInc=DMA_PINC_DISABLE
 Dma.USART1_TX.0.Priority=DMA_PRIORITY_LOW
 Dma.USART1_TX.0.RequestParameters=Instance,Direction,PeriphInc,MemInc,PeriphDataAlignment,MemDataAlignment,Mode,Priority,FIFOMode
 FREERTOS.Events01=sys_evt,Dynamic,NULL
-FREERTOS.FootprintOK=false
+FREERTOS.FootprintOK=true
 FREERTOS.IPParameters=Tasks01,configENABLE_FPU,FootprintOK,configTOTAL_HEAP_SIZE,Queues01,Events01
 FREERTOS.Queues01=netMsgQueue,8,net_msg_t,0,Dynamic,NULL,NULL
-FREERTOS.Tasks01=defaultTask,24,512,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL;netTask,24,1024,StartNetTask,Default,NULL,Dynamic,NULL,NULL;ftpTask,24,1024,StartFtpTask,As weak,NULL,Dynamic,NULL,NULL;testTask,16,4096,start_test_task,As weak,NULL,Dynamic,NULL,NULL;uiTask,16,4096,StartUiTask,Default,NULL,Dynamic,NULL,NULL
+FREERTOS.Tasks01=defaultTask,24,512,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL;netTask,24,1024,StartNetTask,Default,NULL,Dynamic,NULL,NULL;ftpTask,24,1024,StartFtpTask,As weak,NULL,Dynamic,NULL,NULL;testTask,16,1024,start_test_task,As weak,NULL,Dynamic,NULL,NULL;uiTask,16,4096,StartUiTask,Default,NULL,Dynamic,NULL,NULL
 FREERTOS.configENABLE_FPU=1
 FREERTOS.configTOTAL_HEAP_SIZE=49152
 File.Version=6
diff --git a/Src/freertos.c b/Src/freertos.c
index 3bf4bea8..4e60452a 100644
--- a/Src/freertos.c
+++ b/Src/freertos.c
@@ -89,7 +89,7 @@ const osThreadAttr_t ftpTask_attributes = {
 osThreadId_t testTaskHandle;
 const osThreadAttr_t testTask_attributes = {
   .name = "testTask",
-  .stack_size = 4096 * 4,
+  .stack_size = 1024 * 4,
   .priority = (osPriority_t) osPriorityBelowNormal,
 };
 /* Definitions for uiTask */
@@ -231,7 +231,10 @@ void StartDefaultTask(void *argument)
   }
 
   for (;;) {
-    osDelay(1000);
+      HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
+      HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
+      HAL_GPIO_TogglePin(LED3_GPIO_Port, LED3_Pin);
+    osDelay(500);
   }
   /* USER CODE END StartDefaultTask */
 }