diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 7af198f..e4ee713 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -2,6 +2,7 @@ set(srcs "app_main.cpp" #
     "ble_spp_server_demo.c"
     "camera.cpp"
     "light.c"
+    "port.c"
 )
 
 idf_component_register(SRCS "${srcs}"#
diff --git a/main/light.c b/main/light.c
index 093ab1a..52c9aa9 100644
--- a/main/light.c
+++ b/main/light.c
@@ -2,6 +2,7 @@
 
 #include "driver/gpio.h"
 #include "esp_log.h"
+#include "port.h"
 
 #define GPIO_DEBUG_LIGHT 12
 #define GPIO_POWER_LIGHT 12
@@ -95,6 +96,12 @@ void T_wifi_state_light_init(wifi_state_light_structer_t *wifi_state_light_struc
 
 void T_debug_light_schedule(void)
 {
+    static uint32_t debug_light_time;
+    if (port_haspassedms(debug_light_time) > 300)
+    {
+        T_debug_light_toggle_level();
+        debug_light_time = port_get_ticket();
+    }
 }
 
 void T_light_schedule(void)
diff --git a/main/port.c b/main/port.c
new file mode 100644
index 0000000..7fda6cb
--- /dev/null
+++ b/main/port.c
@@ -0,0 +1,18 @@
+#include "port.h"
+
+#include "driver/gpio.h"
+#include "esp_log.h"
+
+uint32_t port_get_ticket() { return esp_log_timestamp(); }
+
+uint32_t port_haspassedms(uint32_t ticket) { return port_get_ticket() - ticket; }
+
+uint32_t port_delay_ms(uint32_t ms)
+{
+    uint32_t now = port_get_ticket();
+    while (port_get_ticket() - now < ms)
+    {
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/main/port.h b/main/port.h
new file mode 100644
index 0000000..6db47d0
--- /dev/null
+++ b/main/port.h
@@ -0,0 +1,6 @@
+#pragma once
+#include <stdint.h>
+
+uint32_t port_get_ticket();
+uint32_t port_haspassedms(uint32_t ticket);
+uint32_t port_delay_ms(uint32_t ms);
\ No newline at end of file