Trying to on led using the input from pir sensor

Library IEEE;

use IEEE.STD_LOGIC_SIGNED;

use IEEE.STD_LOGIC_UNSIGNED;

use ieee.std_logic_1164.all;

use IEEE.numeric_std.all;

entity ltestinggpiowithdelay is

port( GPIO_0 : in std_logic_vector(2 downto 0);

CLK : in std_logic;

DIN : in std_logic_vector (2 DOWNTO 0);

q : out std_logic_vector(2 downto 0));

end ltestinggpiowithdelay ;

architecture bufferwithGpio_arc of ltestinggpiowithdelay is

begin

process(GPIO_0)

begin

if (GPIO_0(0)='1') then q<=GPIO_0(2 downto 0);

else q<= "000";

end if;

end process;

clk_proc:process(CLK)

variable count:std_logic_vector(2 downto 0) := "000";

begin

if (CLK'EVENT AND CLK = '1') then

if GPIO_0(0) = '1' then

count := DIN;

else count := "count+1 >";

end if;

end if;

q <= count after 50 ns;

end process clk_proc;

end bufferwithGpio_arc;

mr daixiwen so my programming is basically to read the input from the PIR sensor and i would like to maintain the output for sometime when the PIR detects movement as to turn on a relay etc. please check whether my programming is correct or not. now when i compile the program it seems a new error stated( object with std_logic type cannot contain character 'C'object with std_logic type cannot contain character 'C').. i am already blank already. please guide me.