problem with custom istruction: clk_en never changes

hello

i'm trying to do a multicycle custom instruction in oder to pilot a led.

my problem is the fact that the clk_en never takes the value '1', it always remains to '0' (seen from signaltab) and i don' know why.

that is the code that i'm using :

l

port

(

clk : in std_logic;

reset: in std_logic;

clk_en: in std_logic;

dataa : in std_logic_vector (31 downto 0);

datab : in std_logic_vector (31 downto 0);

result: out std_logic_vector (31 downto 0);

coe_conduitOn_export: out std_logic

);

end entity;

architecture rtl of turnOn is -- RTL au lieu de led

signal result_i: std_logic_vector (31 downto 0);

signal zero :std_logic_vector(31 downto 0);

begin

process(clk)

begin

if(reset = '1') then

result <= (others=>'0');

coe_conduitOn_export<='0';

else

if(clk_en='1') then

if (rising_edge(clk))then

coe_conduitOn_export<= dataa(0);--dataa(0);

result <= dataa or datab;

end if;

else

result <= (others=>'0');

coe_conduitOn_export<='0';

end if;

end if;

end process;

please help me.