diff --git a/myapps/blinky/src/main.c b/myapps/blinky/src/main.c
index 54a2e18..f523517 100644
--- a/myapps/blinky/src/main.c
+++ b/myapps/blinky/src/main.c
@@ -1,14 +1,3 @@
-/********************************** (C) COPYRIGHT *******************************
- * File Name          : Main.c
- * Author             : WCH
- * Version            : V1.1
- * Date               : 2022/01/25
- * Description        : Ä£Äâ¼æÈÝHIDÉ豸
- *********************************************************************************
- * Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
- * Attention: This software (modified or not) and binary are used for 
- * microcontroller manufactured by Nanjing Qinheng Microelectronics.
- *******************************************************************************/
 
 #include "CH59x_common.h"
 
@@ -23,17 +12,8 @@ void board_led_toggle(void)
     GPIOA_InverseBits(GPIO_Pin_8);
 }
 
-void board_led_set(uint8_t set)
-{
-    if (set)
-        GPIOA_ResetBits(GPIO_Pin_8);
-    else
-        GPIOA_SetBits(GPIO_Pin_8);
-}
-
 int main()
 {
-    uint8_t s;
     SetSysClock(CLK_SOURCE_PLL_60MHz);
 
     board_led_init();