control.vhd

1、 南北和东西方向各有一组绿、黄、红灯

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;

entity control is
port(		clk:in std_logic;
			clr:in std_logic;
			kin:in std_logic;
			catch_o:out std_logic_vector(1 to 6);
			time1 : out std_logic_vector(5 downto 0);
            time2 : out std_logic_vector(5 downto 0));
end control;
architecture a of control is
	signal counter : std_logic_vector(5 downto 0);
	signal t1 : std_logic_vector(5 downto 0);
	signal i : integer range 0 to 3;
    signal temp: std_logic;
    signal catch: std_logic_vector(1 to 6);
begin
	process(clr,clk)                          
	begin        
		if (clr='1') then                   ----复位有