APB_FFTexp.vhd
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| text/x-vhdl
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VhdlLexer
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r52 | -- APB_FFTexp.vhd | |
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; | |||
use lpp.apb_devices_list.all; | |||
use lpp.lpp_fft.all; | |||
--! Driver APB, va faire le lien entre l'IP VHDL de la FIFO et le bus Amba | |||
entity APB_FFTexp is | |||
generic ( | |||
pindex : integer := 0; | |||
paddr : integer := 0; | |||
pmask : integer := 16#fff#; | |||
pirq : integer := 0; | |||
abits : integer := 8); | |||
port ( | |||
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 | |||
); | |||
end APB_FFTexp; | |||
architecture ar_APB_FFTexp of APB_FFTexp is | |||
constant REVISION : integer := 1; | |||
constant pconfig : apb_config_type := ( | |||
0 => ahb_device_reg (VENDOR_LPP, LPP_FFT, 0, REVISION, 0), | |||
1 => apb_iobar(paddr, pmask)); | |||
type FFT_ctrlr_Reg is record | |||
FFT_Cfg : std_logic_vector(1 downto 0); | |||
FFT_Reel : std_logic_vector(15 downto 0); | |||
FFT_Img : std_logic_vector(15 downto 0); | |||
end record; | |||
signal Rec : FFT_ctrlr_Reg; | |||
signal Rdata : std_logic_vector(31 downto 0); | |||
signal y_valid : std_logic; | |||
signal y_rdy : std_logic; | |||
begin | |||
Rec.FFT_Cfg(0) <= y_rdy; | |||
Rec.FFT_Cfg(1) <= y_valid; | |||
CONVERTER : entity work.topFFTbis | |||
port map (clk,raz,y_valid,y_rdy,Rec.FFT_Reel,Rec.FFT_Img); | |||
process(rst,clk) | |||
begin | |||
-- if(rst='0')then | |||
if(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 "000001" => | |||
-- Rec.FFT_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" => | |||
Rdata(3 downto 0) <= "000" & Rec.FFT_Cfg(0); | |||
Rdata(7 downto 4) <= "000" & Rec.FFT_Cfg(1); | |||
Rdata(31 downto 8) <= X"CCCCCC"; | |||
when "000001" => | |||
Rdata(31 downto 16) <= X"FFFF"; | |||
Rdata(15 downto 0) <= Rec.FFT_Data; | |||
when "000010" => | |||
Rdata(31 downto 16) <= X"FFFF"; | |||
Rdata(15 downto 0) <= Rec.FFT_Reel; | |||
when "000011" => | |||
Rdata(31 downto 16) <= X"FFFF"; | |||
Rdata(15 downto 0) <= Rec.FFT_Img; | |||
when others => | |||
Rdata <= (others => '0'); | |||
end case; | |||
end if; | |||
end if; | |||
apbo.pconfig <= pconfig; | |||
end process; | |||
apbo.prdata <= Rdata when apbi.penable = '1'; | |||
end ar_APB_FFTexp; |