Subversion Repositories etherlab

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-- EtherLab Common Package                                                    --
--------------------------------------------------------------------------------
-- Copyright (C)2012  Mathias Hörtnagl <mathias.hoertnagl@gmail.com>          --
--                                                                            --
-- This program is free software: you can redistribute it and/or modify       --
-- it under the terms of the GNU General Public License as published by       --
-- the Free Software Foundation, either version 3 of the License, or          --
-- (at your option) any later version.                                        --
--                                                                            --
-- This program 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 General Public License for more details.                               --
--                                                                            --
-- You should have received a copy of the GNU General Public License          --
-- along with this program.  If not, see <http://www.gnu.org/licenses/>.      --
--------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
 
package common is
 
   -- Array for channel data.
   type data_t is array(7 downto 0) of std_logic_vector(15 downto 0);
 
   -- Channel constants.
   constant CHANNEL_A : natural range 0 to 7 := 0;
   constant CHANNEL_B : natural range 0 to 7 := 1;
   constant CHANNEL_C : natural range 0 to 7 := 2;
   constant CHANNEL_D : natural range 0 to 7 := 3;
   constant CHANNEL_E : natural range 0 to 7 := 4;
   constant CHANNEL_F : natural range 0 to 7 := 5;
   constant CHANNEL_G : natural range 0 to 7 := 6;
   constant CHANNEL_H : natural range 0 to 7 := 7;
 
   -- Check, if channel flag is set.
   function isSet(el_chnl : std_logic_vector; channel : natural) return boolean; 
end common;
 
package body common is
 
   -- Check, if channel flag is set.
   function isSet(el_chnl : std_logic_vector; channel : natural) 
   return boolean is
   begin
      return (el_chnl(channel) = '1');
   end; 
end common;