Binome
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Hi,
I have a strange error. Here is my code:
Modelsim shows me in_ifft_I and in_ifft_Q are correct but sigtmp_I and sigtmp_Q are X so the init loop should not be executed but I don't know why.
Could someone explain?
Thanks.
I have a strange error. Here is my code:
Code:
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.math_real.all;
library work;
use work.fft_pack.all;
entity fft_g is
generic(
Dwidth : integer:=8;
Twidth : integer:=8;
N : integer:=8;
log2N : integer:=3;
pipelined : integer:=2;
ifft : boolean:=false);
port(
clk : in std_logic;
rst : in std_logic;
en : in std_logic;
p_I : in fft_data(N-1 downto 0);
p_Q : in fft_data(N-1 downto 0);
x_I : out fft_data(N-1 downto 0);
x_Q : out fft_data(N-1 downto 0);
overflow : out std_logic_vector(log2N-1 downto 0));
end fft_g;
architecture rtl of fft_g is
signal in_ifft_I : fft_data(N-1 downto 0);
signal in_ifft_Q : fft_data(N-1 downto 0);
signal out_ifft_I : fft_data(N-1 downto 0);
signal out_ifft_Q : fft_data(N-1 downto 0);
signal sigtmp_I : sig_tmp(log2N downto 0, N-1 downto 0);
signal sigtmp_Q : sig_tmp(log2N downto 0, N-1 downto 0);
begin
fft_x : if ifft=false generate
pas_de_croisement : for k in 0 to N-1 generate
in_ifft_I(k) <= p_I(k);
in_ifft_Q(k) <= p_Q(k);
x_I(k) <= out_ifft_I(k);
x_Q(k) <= out_ifft_Q(k);
end generate pas_de_croisement;
end generate fft_x;
init : for j in 0 to N-1 generate
sigtmp_I(0,j) <= in_ifft_I(j);
sigtmp_Q(0,j) <= in_ifft_Q(j);
end generate init;
end rtl;Could someone explain?
Thanks.