refactor hal_button_Level callback type

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 button_id), uint8_t active_level, uint8_t button_id)
+void button_init(struct Button* handle, BtnLevelCallback pin_level, uint8_t active_level, uint8_t button_id)
 {
 	memset(handle, 0, sizeof(struct Button));
 	handle->event = (uint8_t)NONE_PRESS;

multi_button.h

@@ -17,6 +17,7 @@
 
 
 typedef void (*BtnCallback)(void *);
+typedef uint8_t (*BtnLevelCallback)(uint8_t);
 
 typedef enum {
 	PRESS_DOWN = 0,
@@ -39,7 +40,7 @@ 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_);
+    BtnLevelCallback hal_button_Level;
 	BtnCallback  cb[number_of_event];
 	struct Button* next;
 }Button;
@@ -48,7 +49,7 @@ struct Button* next;
 extern "C" {
 #endif
 
-void button_init(struct Button* handle, uint8_t(*pin_level)(uint8_t button_id), uint8_t active_level, uint8_t button_id);
+void button_init(struct Button* handle, BtnLevelCallback pin_level, 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);