Newbie - FT245 driver and 1 second period timer issue

I found out what the problem was. Period1S was high for 1ms, so while in idle state it would send bunch of data out since Period1S = '1' would be satisfied.

library ieee;
use ieee.std_logic_1164.all;
entity edge_detector is
    port ( 
        clk_50mhz   : in std_logic;
        rst         : in std_logic;
        din         : in std_logic;
        change      : out std_logic;
          rising      : out std_logic;
          falling     : out std_logic
    );
end edge_detector;
architecture bhv of edge_detector is
signal din_delayed1 :std_logic;
begin
    process(clk_50mhz)
    begin
        if rising_edge(clk_50mhz) then
            if rst = '0' then
                din_delayed1 <= '0';
            else
                din_delayed1 <= din;
            end if;
        end if;
    end process;
    change <= (din_delayed1 xor din); --rising or falling edge (0 -> 1 xor 1 -> 0)
     rising <= ( (not din_delayed1) and din);
     falling <= (din_delayed1 and (not din));
end bhv;

signal PeriodRising : STD_LOGIC;
component edge_detector is
    port ( 
        clk_50mhz   : in std_logic;
        rst         : in std_logic;
        din         : in std_logic;
        change      : out std_logic;
          rising      : out std_logic;
          falling     : out std_logic
    );
    end component;
....
 edetect : edge_detector port map 
    ( 
       rst => reset,
       clk_50mhz => clk,
        din => Period1mS,
        rising => PeriodRising
    );    
...
 when idle =>
                       delay_next <= 0;
                            write_cnt_next <= 0;
                     if(rxf_reg = '0') then
                            state_next <= reading_prepare;            
                       elsif(PeriodRising = '1') then  -- Send data every 1 second                               
                               state_next <= write_prepare;                               
                            end if;