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Serialize.vhd
107 lines | 3.9 KiB | text/x-vhdl | VhdlLexer
/ lib / lpp / lpp_cna / Serialize.vhd
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martin
debug lpp_uart and comment lpp_cna
 r40 ------------------------------------------------------------------------------
-- This file is a part of the LPP VHDL IP LIBRARY
-- Copyright (C) 2009 - 2010, Laboratory of Plasmas Physic - CNRS
--
-- 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, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
------------------------------------------------------------------------------
-- Author : Martin Morlot
-- Mail : martin.morlot@lpp.polytechnique.fr
------------------------------------------------------------------------------
library IEEE;
use IEEE.numeric_std.all;
use IEEE.std_logic_1164.all;
--! Programme qui permet de s�rialiser un vecteur
entity Serialize is
port(
clk,raz : in std_logic; --! Horloge et Reset du composant
sclk : in std_logic; --! Horloge Systeme
vectin : in std_logic_vector(15 downto 0); --! Vecteur d'entr�e
send : in std_logic; --! Flag, Une nouvelle donn�e est pr�sente
sended : out std_logic; --! Flag, La donn�e a �t� s�rialis�e
Data : out std_logic --! Donn�e num�rique s�rialis�
);
end Serialize;
architecture ar_Serialize of Serialize is
type etat is (attente,serialize);
signal ect : etat;
martin
Update lpp_cna and co
 r17 signal vector_int : std_logic_vector(16 downto 0);
martin
debug lpp_uart and comment lpp_cna
 r40 signal vectin_reg : std_logic_vector(15 downto 0);
signal load : std_logic;
signal N : integer range 0 to 16;
martin
Update lpp_cna and co
 r17 signal CPT_ended : std_logic:='0';
martin
debug lpp_uart and comment lpp_cna
 r40
begin
process(clk,raz)
begin
if(raz='0')then
martin
Update lpp_cna and co
 r17 ect <= attente;
martin
debug lpp_uart and comment lpp_cna
 r40 vectin_reg <= (others=> '0');
martin
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 r17 load <= '0';
martin
debug lpp_uart and comment lpp_cna
 r40 sended <= '1';
martin
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 r17 elsif(clk'event and clk='1')then
martin
debug lpp_uart and comment lpp_cna
 r40 vectin_reg <= vectin;
case ect is
when attente =>
martin
Update lpp_cna and co
 r17 if (send='1') then
sended <= '0';
load <= '1';
ect <= serialize;
else
martin
debug lpp_uart and comment lpp_cna
 r40 ect <= attente;
end if;
martin
Update lpp_cna and co
 r17 when serialize =>
martin
debug lpp_uart and comment lpp_cna
 r40 load <= '0';
if(CPT_ended='1')then
martin
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 r17 ect <= attente;
martin
debug lpp_uart and comment lpp_cna
 r40 sended <= '1';
martin
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 r17 end if;
martin
debug lpp_uart and comment lpp_cna
 r40
end case;
end if;
end process;
process(sclk,load,raz)
begin
if (raz='0')then
vector_int <= (others=> '0');
N <= 16;
elsif(load='1')then
vector_int <= vectin & '0';
N <= 0;
elsif(sclk'event and sclk='1')then
if (CPT_ended='0') then
vector_int <= vector_int(15 downto 0) & '0';
N <= N+1;
end if;
end if;
end process;
martin
Update lpp_cna and co
 r17 CPT_ended <= '1' when N = 16 else '0';
martin
debug lpp_uart and comment lpp_cna
 r40
with ect select
Data <= vector_int(16) when serialize,
'0' when others;
end ar_Serialize;