Subversion Repositories open_hitter

--////////////////////////////////////////////////////////////////////
--//                                                              ////
--// hitter_sim.vhd                                               ////
--//                                                              ////
--// This file is part of the open_hitter opencores effort.       ////
--// <http://www.opencores.org/cores/open_hitter/>                ////
--//                                                              ////
--// Module Description:                                          ////
--//    Synthesizable simulation class for the class 'hitter'     ////
--//    * translates button actions/results onto NSEW buttons     ////
--//      and NSEW LEDs                                           ////
--//    * target env: Xilinx Virtex 6 / ML605                     ////
--//                                                              ////
--// To Do:                                                       ////
--//    #LOTS                                                     ////
--//                                                              ////
--// Author(s):                                                   ////
--// - Stephen Hawes                                              ////
--//                                                              ////
--////////////////////////////////////////////////////////////////////
--//                                                              ////
--// Copyright (C) 2015 Stephen Hawes and OPENCORES.ORG           ////
--//                                                              ////
--// This source file may be used and distributed without         ////
--// restriction provided that this copyright statement is not    ////
--// removed from the file and that any derivative work contains  ////
--// the original copyright notice and the associated disclaimer. ////
--//                                                              ////
--// This source file is free software; you can redistribute it   ////
--// and/or modify it under the terms of the GNU Lesser General   ////
--// Public License as published by the Free Software Foundation; ////
--// either version 2.1 of the License, or (at your option) any   ////
--// later version.                                               ////
--//                                                              ////
--// This source is distributed in the hope that it will be       ////
--// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
--// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
--// PURPOSE. See the GNU Lesser General Public License for more  ////
--// details.                                                     ////
--//                                                              ////
--// You should have received a copy of the GNU Lesser General    ////
--// Public License along with this source; if not, download it   ////
--// from <http://www.opencores.org/lgpl.shtml>                   ////
--//                                                              ////
--////////////////////////////////////////////////////////////////////
--//
--// \$Id\$  TAKE OUT THE \'s and this comment in order to get this to work
--//
--// CVS Revision History
--//
--// \$Log\$  TAKE OUT THE \'s and this comment in order to get this to work
--//
library ieee;
use ieee.std_logic_1164.all;
 
entity hitter_sim is
port (
        RX_CLK: in std_logic;
        PUSH_BUTTONS_5BITS_TRI_I: in std_logic_vector(4 downto 0);
        LEDS_POSITIONS_TRI_O: out std_logic_vector(4 downto 0)
);
end hitter_sim;
 
architecture implementation of hitter_sim is
   component search_control_sim
      port (
         RX_CLK: in std_logic;
         restart: in std_logic;
         processing: out std_logic;
         result_one: out std_logic;
         result_two: out std_logic;
         result_all_ok: out std_logic
      );
   end component;
   for search_control_sim_0: search_control_sim use entity work.search_control_sim;
       --signal RX_CLK: std_logic;
       signal restart: std_logic;
       signal processing: std_logic;
       signal result_one: std_logic;
       signal result_two: std_logic;
       signal result_all_ok: std_logic;
   --
   --temporarily commented
   --component parse_price_sim
   --   port (
   --      RX_CLK: in std_logic;
   --      restart: in std_logic;
   --      processing: out std_logic;
   --      result_is_ok: out std_logic
   --   );
   --end component;
   --for parse_price_sim_0: parse_price_sim use entity work.parse_price_sim;
   --    --signal RX_CLK: std_logic;
   --    signal restart: std_logic;
   --    signal processing: std_logic;
   --    signal result_is_ok: std_logic;
   --
   signal alight: std_logic := '0';
   signal pos: integer := 0;
begin
   search_control_sim_0: search_control_sim port map (
       RX_CLK => RX_CLK,
       restart => restart,
       processing => processing,
       result_one => result_one,
       result_two => result_two,
       result_all_ok => result_all_ok
   );
   --
   --temporarily commented
   --parse_price_sim_0: parse_price_sim port map (
   --    RX_CLK => RX_CLK,
   --    restart => restart,
   --    processing => processing,
   --    result_is_ok => result_is_ok
   --);
   --
   flasher: process (RX_CLK) is
   begin
      if rising_edge(RX_CLK) then
 
    --     if (pos < 4) then         -- ghdl flash
    --     if (pos < 62500000) then   -- 125Mhz timing / 0.5s
         if (pos < 25000000) then   -- 125Mhz timing / 0.2s
            restart <= '1';
            pos <= pos + 1;
         elsif (pos < 125000000) then   -- 125Mhz timing / 1s
            pos <= pos + 1;
            restart <= '0';
         else
            alight <= not alight;
            pos <= 0;
         end if;
 
      end if;
   end process flasher;
 
   LEDS_POSITIONS_TRI_O(0) <= processing;       -- C   
   LEDS_POSITIONS_TRI_O(1) <= alight;           -- W
   LEDS_POSITIONS_TRI_O(2) <= result_one;       -- S
   LEDS_POSITIONS_TRI_O(3) <= result_two;       -- N
   LEDS_POSITIONS_TRI_O(4) <= result_all_ok;    -- E
 --  restart <= PUSH_BUTTONS_5BITS_TRI_I(0);
end implementation;