mirror of
https://github.com/Klagarge/Cursor.git
synced 2024-11-30 04:43:26 +00:00
47 lines
1.6 KiB
VHDL
47 lines
1.6 KiB
VHDL
|
--------------------------------------------------------------------------------
|
||
|
|
-- Copyright 2013 HES-SO Valais Wallis (www.hevs.ch)
|
||
|
|
--
|
||
|
|
-- 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/>
|
||
|
|
--------------------------------------------------------------------------------
|
||
|
|
-- Counter
|
||
|
|
-- Simple counter with a generic width of nbBits.
|
||
|
|
--
|
||
|
|
-- Created on 2013-08-10
|
||
|
|
--
|
||
|
|
-- Version: 1.0
|
||
|
|
-- Author: Oliver A. Gubler (oliver.gubler@hevs.ch)
|
||
|
|
--------------------------------------------------------------------------------
|
||
|
|
--
|
||
|
|
ARCHITECTURE rtl OF counterEnableResetSync IS
|
||
|
|
|
||
|
|
signal sCountOut: unsigned(countOut'range);
|
||
|
|
|
||
|
|
BEGIN
|
||
|
|
|
||
|
|
countEndlessly: process(reset, clock)
|
||
|
|
begin
|
||
|
|
if reset = '1' then
|
||
|
|
sCountOut <= (others => '0');
|
||
|
|
elsif rising_edge(clock) then
|
||
|
|
if resetSync = '1' then
|
||
|
|
sCountOut <= (others => '0');
|
||
|
|
elsif enable = '1' then
|
||
|
|
sCountOut <= sCountOut + 1;
|
||
|
|
end if;
|
||
|
|
end if;
|
||
|
|
end process countEndlessly;
|
||
|
|
|
||
|
|
countOut <= sCountOut after delay;
|
||
|
|
|
||
|
|
END ARCHITECTURE RTL;
|