国产九九热视频-国产九九精品视频-国产精自产拍久久久久久蜜-国产精自产拍久久久久久-国产精在线-国产精亚洲视频

Rss & SiteMap

曙海教育集團論壇 http://www.bjzhda.cn

曙海教育集團論壇
共20 條記錄, 每頁顯示 10 條, 頁簽: [1] [2]
[瀏覽完整版]

標題:FPGA 時鐘問題

1樓
wangxinxin 發表于:2010-12-19 14:00:46
剛學不久~

我要做24H製的時鐘~但我一直DEBUG~一直用不出來~

Xilinx ISE 8.2i軟體~

請會的人幫我看一下哪出錯了~謝



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 CLOCK_00_60 is

    Port ( CLK : in  STD_LOGIC;

           RESET : in  STD_LOGIC;

           ENABLE : out  STD_LOGIC_VECTOR (6 downto 0);

           SEGMENT : out  STD_LOGIC_VECTOR (6 downto 0));

end CLOCK_00_60;


architecture Behavioral of CLOCK_00_60 is

signal SCAN_CLK :STD_LOGIC;

signal COUNT_CLK :STD_LOGIC;

signal DECODE_BCD :STD_LOGIC_VECTOR (3 downto 0);

signal mineable :STD_LOGIC;

signal hreable :STD_LOGIC;

signal POSITION:STD_LOGIC_VECTOR (6 downto 0);

signal DIVIDER:STD_LOGIC_VECTOR (29 downto 1);

signal COUNT_BCD:STD_LOGIC_VECTOR (23 downto 0);


begin

-------------------------------------------------

process (CLK,RESET)

begin

if RESET = '0' then

 DIVIDER <= ( others => '0');

elsif CLK' event and CLK = '1' then

 DIVIDER <= DIVIDER + 1 ;

end if;

end process;

COUNT_CLK<=DIVIDER(24);

SCAN_CLK<=DIVIDER(15);

------------------------------------------------秒

process(RESET,SCAN_CLK)

begin

if RESET = '0' then

 COUNT_BCD <= ( others => '0');

elsif SCAN_CLK' event and SCAN_CLK = '1' then

 if   COUNT_BCD(3 downto 0)= x"9" then

    COUNT_BCD(3 downto 0)<= x"0";

    COUNT_BCD(7 downto 4)<= COUNT_BCD(7 downto 4)+1;

 else

   COUNT_BCD(3 downto 0)<= COUNT_BCD(3 downto 0)+1;

 end if;

end if;

end process;

mineable <= '1' when COUNT_BCD(7 downto 0) = x"59" else '0';

----------------------------------------------------------分


process(RESET,SCAN_CLK)

begin

if RESET = '0' then

 COUNT_BCD <= ( others => '0');

 if mineable = '1' then

elsif SCAN_CLK' event and SCAN_CLK = '1' then

 if   COUNT_BCD(11 downto 8)= x"9" then

    COUNT_BCD(11 downto 8)<= x"0";

    COUNT_BCD(15 downto 12)<= COUNT_BCD(15 downto 12)+1;

 else

   COUNT_BCD(11 downto 8)<= COUNT_BCD(11 downto 8)+1;

 end if;

end if;

end if;

end process;

hreable <= '1' when COUNT_BCD(15 downto 8) = x"59" else '0';

-------------------------------------------------------------時

process(RESET,SCAN_CLK)

begin

if RESET = '0' then

 COUNT_BCD <= ( others => '0');

  if mineable = '1' and hreable = '1' then

elsif SCAN_CLK' event and SCAN_CLK = '1' then

 if   COUNT_BCD(19 downto 16)= x"9" then

    COUNT_BCD(19 downto 16)<= x"0";

    COUNT_BCD(23 downto 20)<= COUNT_BCD(23 downto 20)+1;

  if   COUNT_BCD(19 downto 16)= x"2" then

   COUNT_BCD(23 downto 20)<= x"0";

 else

   COUNT_BCD(19 downto 16)<= COUNT_BCD(19 downto 16)+1;

  end if;

 end if;

  end if;

end if;

end process;



process(RESET,SCAN_CLK)

begin

if RESET = '0' then

 POSITION <= "1111110";

elsif SCAN_CLK' event and SCAN_CLK = '1' then

 POSITION<="111111"&POSITION(0);

end if;

end process;

ENABLE<=POSITION;

-----------------------------------------------------------

process(POSITION,SCAN_CLK)

begin

case POSITION is

 when "1111110" => DECODE_BCD <=COUNT_BCD(3 downto 0);    --秒

 when "1111101" => DECODE_BCD <=COUNT_BCD(7 downto 4);    --秒

 when "1111011" => DECODE_BCD <=COUNT_BCD(11 downto 8);   --分

 when "1110111" => DECODE_BCD <=COUNT_BCD(15 downto 12);   --分

   when "1101111" => DECODE_BCD <=COUNT_BCD(19 downto 16);   --時

   when "1011111" => DECODE_BCD <=COUNT_BCD(23 downto 20);   --時

 when others => null;

end case;

end process;

 

with DECODE_BCD Select

SEGMENT<= "1000000" when X"0",

  "1111001" when X"1",

  "0100100" when X"2",

  "0110000" when X"3",

  "0011001" when X"4",

  "0010010" when X"5",

  "0000010" when X"6",

  "1111000" when X"7",

  "0000000" when X"8",

  "0010000" when X"9",

  "1111111" when others;


end Behavioral;
共20 條記錄, 每頁顯示 10 條, 頁簽: [1] [2]

Copyright © 2000 - 2009 曙海教育集團
Powered By 曙海教育集團 Version 2.2
Processed in .01758 s, 2 queries.
主站蜘蛛池模板: 太谷县| 内乡县| 莱芜市| 金坛市| 双峰县| 株洲县| 新野县| 墨竹工卡县| 鸡西市| 石林| 襄樊市| 赣榆县| 景泰县| 武宁县| 疏附县| 肇东市| 桓台县| 新泰市| 永川市| 古浪县| 伊吾县| 财经| 大邑县| 洛扎县| 大方县| 阜宁县| 伊通| 进贤县| 勃利县| 偃师市| 藁城市| 上栗县| 十堰市| 南江县| 伊宁县| 竹北市| 尼勒克县| 平陆县| 融水| 张掖市| 始兴县|