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-- APB_FFTexp.vhd
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library ieee;
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use ieee.std_logic_1164.all;
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library grlib;
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use grlib.amba.all;
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use grlib.stdlib.all;
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use grlib.devices.all;
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library lpp;
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use lpp.lpp_amba.all;
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use lpp.apb_devices_list.all;
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use lpp.lpp_fft.all;
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--! Driver APB, va faire le lien entre l'IP VHDL de la FIFO et le bus Amba
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entity APB_FFTexp is
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generic (
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pindex : integer := 0;
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paddr : integer := 0;
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pmask : integer := 16#fff#;
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pirq : integer := 0;
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abits : integer := 8);
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port (
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clk : in std_logic; --! Horloge du composant
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rst : in std_logic; --! Reset general du composant
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apbi : in apb_slv_in_type; --! Registre de gestion des entr�es du bus
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apbo : out apb_slv_out_type --! Registre de gestion des sorties du bus
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);
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end APB_FFTexp;
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architecture ar_APB_FFTexp of APB_FFTexp is
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constant REVISION : integer := 1;
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constant pconfig : apb_config_type := (
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0 => ahb_device_reg (VENDOR_LPP, LPP_FFT, 0, REVISION, 0),
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1 => apb_iobar(paddr, pmask));
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type FFT_ctrlr_Reg is record
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FFT_Cfg : std_logic_vector(1 downto 0);
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FFT_Reel : std_logic_vector(15 downto 0);
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FFT_Img : std_logic_vector(15 downto 0);
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end record;
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signal Rec : FFT_ctrlr_Reg;
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signal Rdata : std_logic_vector(31 downto 0);
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signal y_valid : std_logic;
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signal y_rdy : std_logic;
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begin
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Rec.FFT_Cfg(0) <= y_rdy;
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Rec.FFT_Cfg(1) <= y_valid;
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CONVERTER : entity work.topFFTbis
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port map (clk,raz,y_valid,y_rdy,Rec.FFT_Reel,Rec.FFT_Img);
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process(rst,clk)
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begin
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-- if(rst='0')then
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if(clk'event and clk='1')then
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--APB Write OP
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-- if (apbi.psel(pindex) and apbi.penable and apbi.pwrite) = '1' then
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-- case apbi.paddr(abits-1 downto 2) is
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-- when "000001" =>
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-- Rec.FFT_Data <= apbi.pwdata(15 downto 0);
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-- when others =>
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-- null;
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-- end case;
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-- end if;
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--APB Read OP
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if (apbi.psel(pindex) and (not apbi.pwrite)) = '1' then
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case apbi.paddr(abits-1 downto 2) is
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when "000000" =>
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Rdata(3 downto 0) <= "000" & Rec.FFT_Cfg(0);
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Rdata(7 downto 4) <= "000" & Rec.FFT_Cfg(1);
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Rdata(31 downto 8) <= X"CCCCCC";
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when "000001" =>
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Rdata(31 downto 16) <= X"FFFF";
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Rdata(15 downto 0) <= Rec.FFT_Data;
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when "000010" =>
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Rdata(31 downto 16) <= X"FFFF";
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Rdata(15 downto 0) <= Rec.FFT_Reel;
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when "000011" =>
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Rdata(31 downto 16) <= X"FFFF";
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Rdata(15 downto 0) <= Rec.FFT_Img;
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when others =>
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Rdata <= (others => '0');
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end case;
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end if;
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end if;
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apbo.pconfig <= pconfig;
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end process;
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apbo.prdata <= Rdata when apbi.penable = '1';
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end ar_APB_FFTexp;
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