APB_CNA.vhd
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| 4.4 KiB
| text/x-vhdl
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VhdlLexer
martin
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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 | ||||
------------------------------------------------------------------------------ | ||||
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r41 | -- Author : Martin Morlot | ||
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r40 | -- Mail : martin.morlot@lpp.polytechnique.fr | ||
------------------------------------------------------------------------------ | ||||
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r17 | library ieee; | ||
use ieee.std_logic_1164.all; | ||||
library grlib; | ||||
use grlib.amba.all; | ||||
use grlib.stdlib.all; | ||||
use grlib.devices.all; | ||||
library lpp; | ||||
use lpp.lpp_amba.all; | ||||
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r37 | use lpp.apb_devices_list.all; | ||
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r17 | use lpp.lpp_cna.all; | ||
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r40 | --! Driver APB, va faire le lien entre l'IP VHDL du convertisseur et le bus Amba | ||
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r17 | |||
entity APB_CNA is | ||||
generic ( | ||||
pindex : integer := 0; | ||||
paddr : integer := 0; | ||||
pmask : integer := 16#fff#; | ||||
pirq : integer := 0; | ||||
abits : integer := 8); | ||||
port ( | ||||
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r40 | clk : in std_logic; --! Horloge du composant | ||
rst : in std_logic; --! Reset general du composant | ||||
apbi : in apb_slv_in_type; --! Registre de gestion des entr�es du bus | ||||
apbo : out apb_slv_out_type; --! Registre de gestion des sorties du bus | ||||
SYNC : out std_logic; --! Signal de synchronisation du convertisseur | ||||
SCLK : out std_logic; --! Horloge systeme du convertisseur | ||||
DATA : out std_logic --! Donn�e num�rique s�rialis� | ||||
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r17 | ); | ||
end APB_CNA; | ||||
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r40 | --! @details Les deux registres (apbi,apbo) permettent de g�rer la communication sur le bus | ||
--! et les sorties seront cabl�es vers le convertisseur. | ||||
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r17 | |||
architecture ar_APB_CNA of APB_CNA is | ||||
constant REVISION : integer := 1; | ||||
constant pconfig : apb_config_type := ( | ||||
0 => ahb_device_reg (VENDOR_LPP, LPP_CNA, 0, REVISION, 0), | ||||
1 => apb_iobar(paddr, pmask)); | ||||
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r24 | signal enable : std_logic; | ||
signal flag_sd : std_logic; | ||||
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r17 | |||
type CNA_ctrlr_Reg is record | ||||
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r24 | CNA_Cfg : std_logic_vector(1 downto 0); | ||
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r17 | CNA_Data : std_logic_vector(15 downto 0); | ||
end record; | ||||
signal Rec : CNA_ctrlr_Reg; | ||||
signal Rdata : std_logic_vector(31 downto 0); | ||||
begin | ||||
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r24 | enable <= Rec.CNA_Cfg(0); | ||
Rec.CNA_Cfg(1) <= flag_sd; | ||||
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r17 | |||
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r62 | CONVERTER : CNA_TabloC | ||
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r24 | port map(clk,rst,enable,Rec.CNA_Data,SYNC,SCLK,flag_sd,Data); | ||
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r17 | |||
process(rst,clk) | ||||
begin | ||||
if(rst='0')then | ||||
Rec.CNA_Data <= (others => '0'); | ||||
elsif(clk'event and clk='1')then | ||||
--APB Write OP | ||||
if (apbi.psel(pindex) and apbi.penable and apbi.pwrite) = '1' then | ||||
case apbi.paddr(abits-1 downto 2) is | ||||
when "000000" => | ||||
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r24 | Rec.CNA_Cfg(0) <= apbi.pwdata(0); | ||
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r17 | when "000001" => | ||
Rec.CNA_Data <= apbi.pwdata(15 downto 0); | ||||
when others => | ||||
null; | ||||
end case; | ||||
end if; | ||||
--APB READ OP | ||||
if (apbi.psel(pindex) and (not apbi.pwrite)) = '1' then | ||||
case apbi.paddr(abits-1 downto 2) is | ||||
when "000000" => | ||||
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r24 | Rdata(31 downto 2) <= X"ABCDEF5" & "00"; | ||
Rdata(1 downto 0) <= Rec.CNA_Cfg; | ||||
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r17 | when "000001" => | ||
Rdata(31 downto 16) <= X"FD18"; | ||||
Rdata(15 downto 0) <= Rec.CNA_Data; | ||||
when others => | ||||
Rdata <= (others => '0'); | ||||
end case; | ||||
end if; | ||||
end if; | ||||
apbo.pconfig <= pconfig; | ||||
end process; | ||||
apbo.prdata <= Rdata when apbi.penable = '1'; | ||||
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r37 | end ar_APB_CNA; | ||