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bác nào sửa giúp a cái bộ chia tần trong đoạn code này với ạ.yêu cầu là xung chuẩn của kit 50khz dùng cho điều khiển led 32x32.nhưng e ko biết sửa.bác nào sửa giúp e với ạ.code đây ạ.tks các bác rất nhiều 
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
entity led32x32 is
Port ( clk : in STD_LOGIC;
row : out STD_LOGIC_VECTOR (31 downto 0);
colum : out STD_LOGIC_VECTOR (31 downto 0));
end led32x32;
architecture Behavioral of led32x32 is
signal cf100: integer range 0 to 151000:=0;
signal clk100hz : std_logic:='0';
signal tmp_colum : std_logic_vector (31 downto 0);
signal counter:std_logic_vector (4 downto 0);
constant h0: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h1: std_logic_vector(31 downto 0):="01100001111100000000000000000000";
constant h2: std_logic_vector(31 downto 0):="01010000010000000000000000000000";
constant h3: std_logic_vector(31 downto 0):="01001000010000000000000000000000";
constant h4: std_logic_vector(31 downto 0):="11101000010000000000000000000000";
constant h5: std_logic_vector(31 downto 0):="01001000010000000000000000000000";
constant h6: std_logic_vector(31 downto 0):="01010000010000000000000000000000";
constant h7: std_logic_vector(31 downto 0):="01100000010000000000000000000000";
constant h8: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h9: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h10: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h11: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h12: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h13: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h14: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h15: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h16: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h17: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h18: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h19: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h20: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h21: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h22: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h23: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h24: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h25: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h26: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h27: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h28: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h29: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h30: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h31: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
begin
colum<=tmp_colum;
--Quét theo hàng , d? li?u hi?n th? dua ra trên c?t
--------------------------------------------------------------------------------------------------------------
--Kh?i chia t?n-- -
--Gi? s? xung chu?n c?a kit là 10KHZ -
--? dây ta c?n s? d?ng 1 t?n s? là 10HZ d? th?c hiên quét các hàng và t?n s? 100hz d? th?c hi?n quét các c?t -
--B? chia t?n 100Hz
process (clk)
begin
if clk='1' and clk'event then
cf100<= cf100 + 1;
if cf100=100 then
cf100<=0;
end if;
if cf100=99 then
clk100hz<= not clk100hz;
end if;
end if;
end process;
--B? chia t?n 10Hz
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--B? d?m dông b? xu?t d? li?u và hàng du?c active
process(clk100hz)
begin
if clk100hz='1' and clk100hz'event then
counter<=counter + 1;
end if;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Ta l?n lu?t b?t 32 hàng , m?i hàng du?c b?t trong kho?ng th?i gian 0.01s
process (counter)
begin
case counter is
when "00001" => row<="10000000000000000000000000000000";
when "00010" => row<="01000000000000000000000000000000";
when "00011" => row<="00100000000000000000000000000000";
when "00100" => row<="00010000000000000000000000000000";
when "00101" => row<="00001000000000000000000000000000";
when "00110" => row<="00000100000000000000000000000000";
when "00111" => row<="00000010000000000000000000000000";
when "01000" => row<="00000001000000000000000000000000";
when "01001" => row<="00000000100000000000000000000000";
when "01010" => row<="00000000010000000000000000000000";
when "01011" => row<="00000000001000000000000000000000";
when "01100" => row<="00000000000100000000000000000000";
when "01101" => row<="00000000000010000000000000000000";
when "01110" => row<="00000000000001000000000000000000";
when "01111" => row<="00000000000000100000000000000000";
when "10000" => row<="00000000000000010000000000000000";
when "10001" => row<="00000000000000001000000000000000";
when "10010" => row<="00000000000000000100000000000000";
when "10011" => row<="00000000000000000010000000000000";
when "10100" => row<="00000000000000000001000000000000";
when "10101" => row<="00000000000000000000100000000000";
when "10110" => row<="00000000000000000000010000000000";
when "10111" => row<="00000000000000000000001000000000";
when "11000" => row<="00000000000000000000000100000000";
when "11001" => row<="00000000000000000000000010000000";
when "11010" => row<="00000000000000000000000001000000";
when "11011" => row<="00000000000000000000000000100000";
when "11100" => row<="00000000000000000000000000010000";
when "11101" => row<="00000000000000000000000000001000";
when "11110" => row<="00000000000000000000000000000100";
when "11111" => row<="00000000000000000000000000000010";
when others => row<="00000000000000000000000000000001";--cho nay ben tren quen ko co' 000000 nen de 00000 la other luon
end case;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Xu?t d? li?u c?n hi?n th? ra
process (counter)
begin
case counter is
when "00001" => tmp_colum<=h0;
when "00010" => tmp_colum<=h1;
when "00011" => tmp_colum<=h2;
when "00100" => tmp_colum<=h3;
when "00101" => tmp_colum<=h4;
when "00110" => tmp_colum<=h5;
when "00111" => tmp_colum<=h6;
when "01000" => tmp_colum<=h7;
when "01001" => tmp_colum<=h8;
when "01010" => tmp_colum<=h9;
when "01011" => tmp_colum<=h10;
when "01100" => tmp_colum<=h11;
when "01101" => tmp_colum<=h12;
when "01110" => tmp_colum<=h13;
when "01111" => tmp_colum<=h14;
when "10000" => tmp_colum<=h15;
when "10001" => tmp_colum<=h16;
when "10010" => tmp_colum<=h17;
when "10011" => tmp_colum<=h18;
when "10100" => tmp_colum<=h19;
when "10101" => tmp_colum<=h20;
when "10110" => tmp_colum<=h21;
when "10111" => tmp_colum<=h22;
when "11000" => tmp_colum<=h23;
when "11001" => tmp_colum<=h24;
when "11010" => tmp_colum<=h25;
when "11011" => tmp_colum<=h26;
when "11100" => tmp_colum<=h27;
when "11101" => tmp_colum<=h28;
when "11110" => tmp_colum<=h29;
when "11111" => tmp_colum<=h30;
when others => tmp_colum<=h31;
end case;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Bây h d?n ph?n d?ch ch? cho ch? ch?y
end Behavioral;
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
entity led32x32 is
Port ( clk : in STD_LOGIC;
row : out STD_LOGIC_VECTOR (31 downto 0);
colum : out STD_LOGIC_VECTOR (31 downto 0));
end led32x32;
architecture Behavioral of led32x32 is
signal cf100: integer range 0 to 151000:=0;
signal clk100hz : std_logic:='0';
signal tmp_colum : std_logic_vector (31 downto 0);
signal counter:std_logic_vector (4 downto 0);
constant h0: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h1: std_logic_vector(31 downto 0):="01100001111100000000000000000000";
constant h2: std_logic_vector(31 downto 0):="01010000010000000000000000000000";
constant h3: std_logic_vector(31 downto 0):="01001000010000000000000000000000";
constant h4: std_logic_vector(31 downto 0):="11101000010000000000000000000000";
constant h5: std_logic_vector(31 downto 0):="01001000010000000000000000000000";
constant h6: std_logic_vector(31 downto 0):="01010000010000000000000000000000";
constant h7: std_logic_vector(31 downto 0):="01100000010000000000000000000000";
constant h8: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h9: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h10: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h11: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h12: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h13: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h14: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h15: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h16: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h17: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h18: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h19: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h20: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h21: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h22: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h23: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h24: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h25: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h26: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h27: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h28: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h29: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h30: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
constant h31: std_logic_vector(31 downto 0):="00000000000000000000000000000000";
begin
colum<=tmp_colum;
--Quét theo hàng , d? li?u hi?n th? dua ra trên c?t
--------------------------------------------------------------------------------------------------------------
--Kh?i chia t?n-- -
--Gi? s? xung chu?n c?a kit là 10KHZ -
--? dây ta c?n s? d?ng 1 t?n s? là 10HZ d? th?c hiên quét các hàng và t?n s? 100hz d? th?c hi?n quét các c?t -
--B? chia t?n 100Hz
process (clk)
begin
if clk='1' and clk'event then
cf100<= cf100 + 1;
if cf100=100 then
cf100<=0;
end if;
if cf100=99 then
clk100hz<= not clk100hz;
end if;
end if;
end process;
--B? chia t?n 10Hz
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--B? d?m dông b? xu?t d? li?u và hàng du?c active
process(clk100hz)
begin
if clk100hz='1' and clk100hz'event then
counter<=counter + 1;
end if;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Ta l?n lu?t b?t 32 hàng , m?i hàng du?c b?t trong kho?ng th?i gian 0.01s
process (counter)
begin
case counter is
when "00001" => row<="10000000000000000000000000000000";
when "00010" => row<="01000000000000000000000000000000";
when "00011" => row<="00100000000000000000000000000000";
when "00100" => row<="00010000000000000000000000000000";
when "00101" => row<="00001000000000000000000000000000";
when "00110" => row<="00000100000000000000000000000000";
when "00111" => row<="00000010000000000000000000000000";
when "01000" => row<="00000001000000000000000000000000";
when "01001" => row<="00000000100000000000000000000000";
when "01010" => row<="00000000010000000000000000000000";
when "01011" => row<="00000000001000000000000000000000";
when "01100" => row<="00000000000100000000000000000000";
when "01101" => row<="00000000000010000000000000000000";
when "01110" => row<="00000000000001000000000000000000";
when "01111" => row<="00000000000000100000000000000000";
when "10000" => row<="00000000000000010000000000000000";
when "10001" => row<="00000000000000001000000000000000";
when "10010" => row<="00000000000000000100000000000000";
when "10011" => row<="00000000000000000010000000000000";
when "10100" => row<="00000000000000000001000000000000";
when "10101" => row<="00000000000000000000100000000000";
when "10110" => row<="00000000000000000000010000000000";
when "10111" => row<="00000000000000000000001000000000";
when "11000" => row<="00000000000000000000000100000000";
when "11001" => row<="00000000000000000000000010000000";
when "11010" => row<="00000000000000000000000001000000";
when "11011" => row<="00000000000000000000000000100000";
when "11100" => row<="00000000000000000000000000010000";
when "11101" => row<="00000000000000000000000000001000";
when "11110" => row<="00000000000000000000000000000100";
when "11111" => row<="00000000000000000000000000000010";
when others => row<="00000000000000000000000000000001";--cho nay ben tren quen ko co' 000000 nen de 00000 la other luon
end case;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Xu?t d? li?u c?n hi?n th? ra
process (counter)
begin
case counter is
when "00001" => tmp_colum<=h0;
when "00010" => tmp_colum<=h1;
when "00011" => tmp_colum<=h2;
when "00100" => tmp_colum<=h3;
when "00101" => tmp_colum<=h4;
when "00110" => tmp_colum<=h5;
when "00111" => tmp_colum<=h6;
when "01000" => tmp_colum<=h7;
when "01001" => tmp_colum<=h8;
when "01010" => tmp_colum<=h9;
when "01011" => tmp_colum<=h10;
when "01100" => tmp_colum<=h11;
when "01101" => tmp_colum<=h12;
when "01110" => tmp_colum<=h13;
when "01111" => tmp_colum<=h14;
when "10000" => tmp_colum<=h15;
when "10001" => tmp_colum<=h16;
when "10010" => tmp_colum<=h17;
when "10011" => tmp_colum<=h18;
when "10100" => tmp_colum<=h19;
when "10101" => tmp_colum<=h20;
when "10110" => tmp_colum<=h21;
when "10111" => tmp_colum<=h22;
when "11000" => tmp_colum<=h23;
when "11001" => tmp_colum<=h24;
when "11010" => tmp_colum<=h25;
when "11011" => tmp_colum<=h26;
when "11100" => tmp_colum<=h27;
when "11101" => tmp_colum<=h28;
when "11110" => tmp_colum<=h29;
when "11111" => tmp_colum<=h30;
when others => tmp_colum<=h31;
end case;
end process;
--------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------
--Bây h d?n ph?n d?ch ch? cho ch? ch?y
end Behavioral;
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