hey guys,
I'm trying to compile some code but i keep getting the following error:
Error (10028): Can't resolve multiple constant drivers for net "ctr[3]" at MainTimer2.vhd(43)
here is the file that is causing the problem:
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.numeric_std.all;
use IEEE.numeric_std;
entity MainTimer2 is
port(
CLK : in std_logic;
CLK_en: in std_logic;
count_en: in std_logic;
syst_reset: in std_logic;
maxNUM: in std_logic_vector(3 downto 0);
ctr: inout std_logic_vector(3 downto 0);
finished: inout std_logic);
end entity MainTimer2;
architecture behavioral of MainTimer2 is
signal en : std_logic;
begin
process(CLK) begin
if (syst_reset = '1') then
ctr<=maxNum;
finished<='1';
end if;
if(RISING_EDGE(CLK) and count_en='1') then
if(finished='1') then
en<='0';
else
en<='1';
end if;
end if;
end process;
process (CLK_en) begin
if(RISING_EDGE(CLK_en) and en='1' ) then
if (ctr = "0000") then
ctr<="0000";
finished<='1';
else
ctr<=ctr-1;
finished<='0';
end if;
end if;
end process;
end behavioral ;
the error is being generated from the second process statement but i dont understand why. any help would be greatly appreciated.
