text: #ifndef DISPLAY_H
  #define DISPLAY_H
  
  enum DisplayState {
  	IDLE		= 0,
  	SEARCHING	= 1,
  	EN_ROUTE    = 2,
  	IN_PLACE    = 3,
  	IN_PROGRESS = 4,
  	ENDED       = 5,
  	CANCELED    = 6,
  	TARIFF		= 7,
  	IDLE_READY  = 8,
  	NONE = -1,
  };
  
  extern enum DisplayState display_state;
  
  void display_task_start ();
  
  void display_state_set (enum DisplayState);
  void display_state_inc ();
  
  void display_set_distance (double dist);
  void display_set_tariff (float dram);
  
  #endif
  