diff --git a/multi_button.c b/multi_button.c
index 878885d..86b3459 100644
--- a/multi_button.c
+++ b/multi_button.c
@@ -18,7 +18,7 @@ static struct Button* head_handle = NULL;
   * @param  button_id: the button id.
   * @retval None
   */
-void button_init(struct Button* handle, uint8_t(*pin_level)(), uint8_t active_level, uint8_t button_id)
+void button_init(struct Button* handle, uint8_t(*pin_level)(uint8_t button_id), uint8_t active_level, uint8_t button_id)
 {
 	memset(handle, 0, sizeof(struct Button));
 	handle->event = (uint8_t)NONE_PRESS;
diff --git a/multi_button.h b/multi_button.h
index b066ade..8e11c1a 100644
--- a/multi_button.h
+++ b/multi_button.h
@@ -19,36 +19,36 @@
 typedef void (*BtnCallback)(void*);
 
 typedef enum {
-	PRESS_DOWN = 0,
-	PRESS_UP,
-	PRESS_REPEAT,
-	SINGLE_CLICK,
-	DOUBLE_CLICK,
-	LONG_PRESS_START,
-	LONG_PRESS_HOLD,
-	number_of_event,
-	NONE_PRESS
+PRESS_DOWN = 0,
+PRESS_UP,
+PRESS_REPEAT,
+SINGLE_CLICK,
+DOUBLE_CLICK,
+LONG_PRESS_START,
+LONG_PRESS_HOLD,
+number_of_event,
+NONE_PRESS
 }PressEvent;
 
 typedef struct Button {
-	uint16_t ticks;
-	uint8_t  repeat : 4;
-	uint8_t  event : 4;
-	uint8_t  state : 3;
-	uint8_t  debounce_cnt : 3;
-	uint8_t  active_level : 1;
-	uint8_t  button_level : 1;
-	uint8_t  button_id;
-	uint8_t  (*hal_button_Level)(uint8_t button_id_);
-	BtnCallback  cb[number_of_event];
-	struct Button* next;
+uint16_t ticks;
+uint8_t  repeat : 4;
+uint8_t  event : 4;
+uint8_t  state : 3;
+uint8_t  debounce_cnt : 3;
+uint8_t  active_level : 1;
+uint8_t  button_level : 1;
+uint8_t  button_id;
+uint8_t  (*hal_button_Level)(uint8_t button_id_);
+BtnCallback  cb[number_of_event];
+struct Button* next;
 }Button;
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-void button_init(struct Button* handle, uint8_t(*pin_level)(), uint8_t active_level, uint8_t button_id);
+void button_init(struct Button* handle, uint8_t(*pin_level)(uint8_t button_id), uint8_t active_level, uint8_t button_id);
 void button_attach(struct Button* handle, PressEvent event, BtnCallback cb);
 PressEvent get_button_event(struct Button* handle);
 int  button_start(struct Button* handle);