diff --git a/b91/liteos_m/src/main.c b/b91/liteos_m/src/main.c
index dfd7bba..a04179c 100644
--- a/b91/liteos_m/src/main.c
+++ b/b91/liteos_m/src/main.c
@@ -108,6 +108,7 @@ STATIC VOID LittlefsInit(VOID)
 
 VOID HardwareInit(VOID)
 {
+    gpio_shutdown(GPIO_ALL);
     SystemInit();
 }