#ifndef _main_h
  #define _main_h

	// count of lines on display
	#define NUM_ROWS 10

	enum tower_mode_t {
		NONE,
		ROTATE_CCW,
		ROTATE_CW,
		BLINK,
	};

	enum display_mode_t {
		NORMAL,
		SCROLL
	};

	struct message_t {
		enum display_mode_t mode;
		uint8_t speed;
		char *text;
	};

#endif

