controller.vhd.bak

library ieee;
use ieee.numeric_std.all;
use ieee.std_logic_1164.all;
use work.tetris_package.all;


entity controller is
	port
	(
		CLOCK                : in  std_logic;
		RESET_N              : in  std_logic;
		TIME_10MS            : in  std_logic;

		CHANGE_SQUARE_BUTTON : in  std_logic;
		CHANGE_COLOR_BUTTON  : in  std_logic;
		CONFIRM_GUESS_BUTTON : in  std_logic;

		-- Connections with Datapath
		CLEAR                : out std_logic;
		CHANGE_SQUARE        : out std_logic;
		CHANGE_COLOR         : out std_logic;
		CONFIRM_GUESS        : out std_logic;

		-- Connections with View
		REDRAW               : out std_logic
	);

end entity;


architecture RTL of controller is
	signal button_time : std_logic;	
begin

	CLEAR <= '0';

	button_time : process(CLOCK, RESET_N)
	begin
		if (RESET_N = '0') then
			button_time <= '0';
		elsif rising_edge(CLOCK) then
			button_time <= '0';
			if (TIME_10MS = '1') then
				button_time <= '1'
			end if;
		end if;
	end process;
	
	controller_RTL : process (CLOCK, RESET_N)
	begin
		if (RESET_N = '0') then
			CHANGE_SQUARE   <= '0';
			CHANGE_COLOR    <= '0';
			CONFIRM_GUESS   <= '0';
			REDRAW          <= '0';
		elsif rising_edge(CLOCK) then
			CHANGE_SQUARE   <= '0';	
			CHANGE_COLOR    <= '0';
			CONFIRM_GUESS   <= '0';
			REDRAW          <= '0';
			if (button_time = '1') then
				if (CHANGE_SQUARE_BUTTON = '1') then
					CHANGE_SQUARE <= '1';
					REDRAW        <= '1';
				elsif (CHANGE_COLOR_BUTTON = '1') then
					CHANGE_COLOR  <= '1';
					REDRAW        <= '1';
				elsif (CONFIRM_GUESS_BUTTON = '1') then
					CONFIRM_GUESS <= '1';
					REDRAW        <= '1';
				end if;				
			end if;
		end if;
	end process;
		
end architecture;