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Time_Display.vhd
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Time_Display.vhd
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
USE IEEE.STD_LOGIC_ARITH.ALL;
USE IEEE.STD_LOGIC_UNSIGNED.ALL;
USE IEEE.NUMERIC_STD.ALL;
entity digi_Timer is
Port (SCLK: IN std_logic;
stop : IN STD_LOGIC;
mode : IN STD_LOGIC;
RST : IN STD_LOGIC;
up : IN STD_LOGIC;
PLUSONE : IN STD_LOGIC;
SET_SELECT : IN STD_LOGIC_VECTOR(1 downto 0);
-- 6 outputs for decoder
digitone : out std_logic_vector(3 downto 0) ;
digittwo : out std_logic_vector(3 downto 0) ;
digitthree : out std_logic_vector(3 downto 0);
digitfour : out std_logic_vector(3 downto 0);
digitfive: out std_logic_vector(3 downto 0);
digitsix: out std_logic_vector(3 downto 0);
digitseven: out std_logic_vector(3 downto 0);
digiteight: out std_logic_vector(3 downto 0);
Time_Display: out STD_LOGIC_Vector(3 downto 0)
);
end digi_Timer;
architecture Behavioral of digi_Timer is
--Clock Values
SIGNAL s : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL s1 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL m : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL m1 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL h : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL h1 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
--Temporary Digits for displaying
signal r1 : std_logic_vector(3 downto 0):= "0000";
SIGNAL r2 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL r3 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL r4 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
signal r5 : std_logic_vector(3 downto 0):= "0000";
SIGNAL r6 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL r7 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL r8 : STD_LOGIC_VECTOR(3 DOWNTO 0) := "0000";
SIGNAL mode_select : integer := 0;
SIGNAL SET : STD_LOGIC := '0';
begin
PROCESS_SCLK : PROCESS(SCLK, RST)
BEGIN
--Main Clock Code
if(rising_edge(SCLK))then
if(SET = '0' and stop = '0') then
if(s < "1011") then
s <= s + 1;
if(s = "1001") then
s<="0000";
s1 <= s1 + 1;
if(s1 = "0101") then
m <= m + 1;
s1 <= "0000";
if(m = "1001") then
m <= "0000";
m1 <= m1 + 1;
if(m1 = "0101") then
m1 <= "0000";
h <= h + 1 ;
if(h = "1001" ) then
h <= "0000";
h1 <= h1 + 1;
elsif(h1 > "0001" and h > "0010" ) then
h1 <= "0000";
h <= "0000";
end if;
end if;
end if;
end if;
end if;
end if;
elsif(SET = '1') then
m<=r5 ;
m1<=r6 ;
h<=r7 ;
h1<=r8 ;
end if;
end if;
--Reset Clock
IF RST = '1' THEN
h1<= "0000";
h<="0000";
m1<="0000";
m<="0000";
s1<="0000";
s<="0000";
end if;
--Clock Mode
if (mode_select = 0 and SET = '0') then
r1<="0000";
r2<="0000";
r3<=s;
r4<=s1;
r5<=m;
r6<=m1;
r7<=h;
r8<=h1;
end if;
--when mode_select 0 show clock
--when mode_select 1 set clock
if (rising_edge(up)) then
mode_select <= mode_select + 1 ;
end if ;
if mode_select = 2 then
mode_select <= 0 ;
end if;
if mode_select = 1 and falling_edge(mode) then
SET <= '1' ;
end if;
if mode_select = 0 then
SET <= '0' ;
end if;
-- Set the Digit that will change in CLOCK SET Mode
if (mode_select /= 0 and mode = '1') then
if (SET_SELECT = "00" and rising_edge(PLUSONE)) then
r5 <= r5 + 1 ;
if r5 = 9 then
r5 <= "0000";
end if;
end if;
if (SET_SELECT = "01" and rising_edge(PLUSONE)) then
r6 <= r6 + 1 ;
if r6 = 5 then
r6 <= "0000";
end if;
end if;
if (SET_SELECT = "10" and rising_edge(PLUSONE)) then
r7 <= r7 + 1 ;
if r7 = 9 OR (r8 = 2 and r7=3) then
r7 <= "0000";
end if;
end if;
if (SET_SELECT = "11" and rising_edge(PLUSONE)) then
r8 <= r8 + 1 ;
if r8 = 2 then
r8 <= "0000";
end if;
end if;
end if;
-- Showing Current Mode : Clock
if (mode_select = 1) then
r4 <="1011"; --C
r3 <="1101"; --l
r2 <="1100"; --o
r1 <="1011"; --c
end if;
END Process;
Time_Display<= "0000";
digitone <=r1 ;
digittwo <=r2;
digitthree <=r3 ;
digitfour <=r4;
digitfive <=r5;
digitsix <=r6;
digitseven<=r7 ;
digiteight<=r8 ;
end Behavioral;