Hello
I'm currently working on my assignment in Spartan-3E.My assignment is:
While button is clicked show values of switches in low 4 bit of LED,when button is released move from left to right.Switching speed 2Hz.
But i haven't got any success so far.It not even showing values of switch.
And here is my code:
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_arith.all;
entity daalgavar_13 is
Port ( clk : in STD_LOGIC;
led : out STD_LOGIC_VECTOR (7 downto 0);
button : in std_logic;
switch : in STD_LOGIC_VECTOR (3 downto 0));
end daalgavar_13;
architecture Behavioral of daalgavar_13 is
signal clk_2G: std_logic;
signal tooluur: integer range 0 to 25000000;
signal data : STD_LOGIC_VECTOR (7 downto 0);
begin
--led<=data;
process(clk_2G) --, switch)
variable temp:std_logic_vector(7 downto 0);
begin
--if (rst = '0') then
if clk_2G'event and clk_2G='1' then
if button='1' then
data <="0000" & switch(3 downto 0);
else
temp := data;
data <= temp (6 downto 0)& temp(7) ;
end if;
end if;
end process;
led<=data;
process(clk)
begin
if clk'event and clk='1' then
if tooluur=25000000 then --2Hz
tooluur<=0;
clk_2G<='1';
else
tooluur<=tooluur+1;
clk_2G<='0';
end if;
end if;
end process;
end Behavioral;
Thank you
