diff --git a/APP/main.c b/APP/main.c
index b1141ad..a588c90 100644
--- a/APP/main.c
+++ b/APP/main.c
@@ -9,6 +9,14 @@
 extern void MAIN_INIT();
 extern void MAIN_START();
 
+__WEAK void MAIN_INIT(){
+    asm("nop");
+}
+
+__WEAK void MAIN_START(){
+    asm("nop");
+}
+
 /**
   * @brief  to extend sram size
   * @param  none
@@ -44,8 +52,6 @@ int main(void) {
     delay_init();
     osKernelInitialize();
 
-    SystemDelayMs(100);
-    
     MAIN_INIT();
 
     MAIN_START();