text: #ifndef _BTN_H_PROCESS_H___
  #define _BTN_H_PROCESS_H___ 
  #include "OneButton.h"
  
  extern OneButton btn_start;
  extern OneButton btn_next;
  extern OneButton btn_previous;
  
  extern void buttonInit();
  extern void buttonLoop();
  
  extern void Start_do_1_Click();
  extern void Up_do_0_Click();
  extern void Down_do_0_Click();
  extern void Start_do_2_Click();
  
  #endif
  