diff --git a/APP_Framework/Applications/lv_app/Makefile b/APP_Framework/Applications/lv_app/Makefile
index 7439fbdf2..14e833cfa 100644
--- a/APP_Framework/Applications/lv_app/Makefile
+++ b/APP_Framework/Applications/lv_app/Makefile
@@ -1,4 +1,4 @@
 SRC_FILES := lv_init.c lv_demo.c lv_demo_calendar.c 
-SRC_FILES += lv_sensor_info.c lv_sensor_update_info.c
+SRC_FILES += lv_sensor_info.c lv_sensor_update_info.c lv_sensor_info_update_demo.c
 
 include $(KERNEL_ROOT)/compiler.mk
diff --git a/APP_Framework/Applications/lv_app/lv_sensor_info.c b/APP_Framework/Applications/lv_app/lv_sensor_info.c
index 2b33415c6..fae473d55 100644
--- a/APP_Framework/Applications/lv_app/lv_sensor_info.c
+++ b/APP_Framework/Applications/lv_app/lv_sensor_info.c
@@ -67,6 +67,7 @@ void lv_sensor_info(void) {
     }
     lv_obj_set_style_text_font(lv_ssr_tb, &lvgl_font_chinese, 0);
 
+    // set width of cells in table
     for (uint32_t i = 0; i < 2 * NR_VAL_PERLINE; ++i) {
         if (i % 2 == 0) {
             lv_table_set_col_width(lv_ssr_tb, i, 75);
diff --git a/APP_Framework/Applications/lv_app/lv_sensor_info.h b/APP_Framework/Applications/lv_app/lv_sensor_info.h
index f8bd4fc4f..963adc703 100644
--- a/APP_Framework/Applications/lv_app/lv_sensor_info.h
+++ b/APP_Framework/Applications/lv_app/lv_sensor_info.h
@@ -8,6 +8,7 @@
 extern lv_obj_t* lv_ssr_tb;
 pthread_mutex_t ssr_val_lock;
 
+// number of sensor values showed in one line
 #define NR_VAL_PERLINE 3
 
 static char* sensor_names[nr_sensors] = {
@@ -20,7 +21,8 @@ static char* sensor_names[nr_sensors] = {
 static char* seneor_denominations[nr_sensors] = {
     "ppb", "ppm", "ppb", "ppb", "ppm",
     "ppm", "ppm", "ppm", "%VOL", "%VOL", "ug/m³", "ug/m³",
-    "°C", "%RH", "m/s", "m/s", "mbar", "dB(A)"
+    "°C", "%RH",
+    "m/s", "m/s", "mbar", "dB(A)"
 };
 
 static double lv_sensor_vals[nr_sensors];
diff --git a/APP_Framework/Applications/main.c b/APP_Framework/Applications/main.c
index 404432da5..e61e62a35 100644
--- a/APP_Framework/Applications/main.c
+++ b/APP_Framework/Applications/main.c
@@ -26,11 +26,6 @@ int main(void)
 #ifdef APPLICATION_OTA
 	ApplicationOtaTaskInit();
 #endif
-    // while (1) {
-    //     ShowTask();
-    //     ShowMemory();
-    //     PrivTaskDelay(1500);
-    // }
     return 0;
 }
 // int cppmain(void);
diff --git a/APP_Framework/lib/lvgl/porting/lv_port_indev_template.c b/APP_Framework/lib/lvgl/porting/lv_port_indev_template.c
index 7d4e99949..72652530f 100644
--- a/APP_Framework/lib/lvgl/porting/lv_port_indev_template.c
+++ b/APP_Framework/lib/lvgl/porting/lv_port_indev_template.c
@@ -230,7 +230,7 @@ static void touchpad_init(void)
 {
     touch_fd = PrivOpen(PRIV_TOUCH_DEV,O_RDWR);
     if(touch_fd >= 0) {
-        printf("touch fd = %d\n",touch_fd);
+        // printf("touch fd = %d\n",touch_fd);
     } else {
         printf("open %s touch fd = %d failed.\n",PRIV_TOUCH_DEV,touch_fd);
     }