displayswitch.vhd

消抖程序

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity displayswitch is

   port
	(  switch  : in std_logic;

	   up      : in std_logic_vector(3 downto 0);
	  price1   : in std_logic_vector(3 downto 0);
      price2   : in std_logic_vector(3 downto 0);
      price3   : in std_logic_vector(3 downto 0)
       sec1    : in std_logic_vector(3 downto 0);
       sec2    : in std_logic_vector(3 downto 0);
       hour1   : in std_logic_vector(3 downto 0);
       hour2   : in std_logic_vector(3 downto 0);
         p1    : in std_logic_vector(3 downto 0);
         p2    : in std_logic_vector(3 downto 0);
         p3    : in std_logic_vector(3 downto 0);
      km1      : in std_logic_vector(3 downto 0);
      km2      : in std_logic_vector(3 downto 0);
      wait1    : in std_logic_vector(3 downto 0);
      wait1    : in std_logic_vector(3 downto 0);
         p1    : out std_logic_vector(3 downto 0);
         p2    : out std_logic_vector(3 downto 0);
         p3    : out std_logic_vector(3 downto 0);
         p4    : out std_logic_vector(3 downto 0);
         p5    : out std_logic_vector(3 downto 0);
         p6    : out std_logic_vector(3 downto 0);
         p7    : out std_logic_vector(3 downto 0)

	  	);
end entity;

architecture arc of displayswitch is
        data1    : out std_logic_vector(3 downto 0);
        data2    : out std_logic_vector(3 downto 0);
        data3   : out std_logic_vector(3 downto 0);
        data4    : out std_logic_vector(3 downto 0);
        data5    : out std_logic_vector(3 downto 0);
        data6   : out std_logic_vector(3 downto 0);
        data7   : out std_logic_vector(3 downto 0)
begin
process( ) is 
begin
if(up'event and up='1')then
    flag<='0'; 
    clk0<=not clk0;
end if;
end process;

process(down) is 
begin
if(down'event and down='1')then 
     flag<='1';
      clk0<=not clk0;
    end if;
end process; 
clk<=clk0;

end arc;