diff --git a/applications/main.c b/applications/main.c
index 4c100cb..0e33ab7 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -78,10 +78,10 @@ static int onboard_sdcard_mount(void)
     return RT_EOK;
 }
 
-#define WIFI_CS GET_PIN(F, 10)
-void WIFI_CS_PULL_DOWM(void)
-{
-    rt_pin_mode(WIFI_CS, PIN_MODE_OUTPUT);
-    rt_pin_write(WIFI_CS, PIN_LOW);
-}
-INIT_BOARD_EXPORT(WIFI_CS_PULL_DOWM);
+// #define WIFI_CS GET_PIN(F, 10)
+// void WIFI_CS_PULL_DOWM(void)
+// {
+//     rt_pin_mode(WIFI_CS, PIN_MODE_OUTPUT);
+//     rt_pin_write(WIFI_CS, PIN_LOW);
+// }
+// INIT_BOARD_EXPORT(WIFI_CS_PULL_DOWM);