library IEEE; use IEEE.STD_LOGIC_1164.ALL;
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- Tiffany Farmer
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1 library IEEE; use IEEE.STD_LOGIC_1164.ALL; -- Uncomment the following library declaration if using -- arithmetic functions with Signed or Unsigned values use IEEE.NUMERIC_STD.ALL; -- Uncomment the following library declaration if instantiating -- any Xilinx leaf cells in this code. --library UNISIM; --use UNISIM.VComponents.all; entity display is Port ( refreshclock : in STD_LOGIC; clockdig1 : in STD_LOGIC; buttonbus : in STD_LOGIC_VECTOR (3 downto 0); cathode : out STD_LOGIC_VECTOR (7 downto 0); anode : out STD_LOGIC_VECTOR (3 downto 0)); end display; architecture Behavioral of display is signal en, lap, displayer : std_logic:= '0'; signal push_button_sig_start, push_button_sig_save_lap, push_button_sig1, push_button_sig2, push_button_sig_display_lap, push_button_sig3, lap_count, lap_display : integer:=0; signal dig1count, dig2count, dig3count, dig4count, use1, use2, use3, use4 : integer := 0; signal dig1lap, dig2lap, dig3lap, dig4lap, dig1lap2, dig2lap2, dig3lap2, dig4lap2, dig1lap3, dig2lap3, dig3lap3, dig4lap3 : integer := 0; display : process (refreshclock, clockdig1, buttonbus, en, lap) is if (buttonbus(1) = '1' and en = '0') then use1 <= 0; use2 <= 0; use3 <= 0; use4 <= 0; dig1count <= 0; dig2count <= 0; dig3count <= 0; dig4count <= 0; dig1lap <= 0; dig2lap <= 0; dig3lap <= 0; dig4lap <= 0;
2 dig1lap2 <= 0; dig2lap2 <= 0; dig3lap2 <= 0; dig4lap2 <= 0; dig1lap3 <= 0; dig2lap3 <= 0; dig3lap3 <= 0; dig4lap3 <= 0; if (displayer = '1' and en = '0') then if (lap_display = 1) then use1 <= dig1lap; use2 <= dig2lap; use3 <= dig3lap; use4 <= dig4lap; elsif (lap_display = 2) then use1 <= dig1lap2; use2 <= dig2lap2; use3 <= dig3lap2; use4 <= dig4lap2; elsif (lap_display = 3) then use1 <= dig1lap3; use2 <= dig2lap3; use3 <= dig3lap3; use4 <= dig4lap3; if (rising_edge(clockdig1)) then if (en = '1') then use1 <= dig1count; use2 <= dig2count; use3 <= dig3count; use4 <= dig4count; if (lap = '1') then if (lap_count = 1) then dig1lap <= dig1count; dig2lap <= dig2count; dig3lap <= dig3count; dig4lap <= dig4count; elsif (lap_count = 2) then dig1lap2 <= dig1count; dig2lap2 <= dig2count; dig3lap2 <= dig3count; dig4lap2 <= dig4count; elsif (lap_count = 3) then dig1lap3 <= dig1count;
3 dig2lap3 <= dig2count; dig3lap3 <= dig3count; dig4lap3 <= dig4count; dig1count <= dig1count + 1; if (dig1count = 9) then dig1count <= 0; dig2count <= dig2count + 1; if (dig2count = 9) then dig2count <= 0; dig3count <= dig3count + 1; if (dig3count = 9) then dig3count <= 0; dig4count <= dig4count + 1; if (dig4count = 9) then dig4count <= 0; end process display; process (refreshclock) variable digit : unsigned (1 downto 0) := "00"; if(rising_edge(refreshclock)) then case digit is when "00" => case (use1) is cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " ";
4 cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; when "01" => case (use2) is cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " ";
5 cathode <= " "; cathode <= " "; when "10" => case (use3) is cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " ";
6 when "11" => case (use4) is cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; cathode <= " "; digit := digit + 1; end process; process(clockdig1) if (rising_edge(clockdig1)) then if (buttonbus(3) = '1') then push_button_sig_display_lap <= 1;
7 elsif (buttonbus(3) = '0') then push_button_sig_display_lap <= 0; push_button_sig3 <= push_button_sig_display_lap; if (push_button_sig3 = 0 and push_button_sig_display_lap = 1) then displayer <= '1'; lap_display <= lap_display + 1; if (lap_display = 3) then lap_display <= 1; elsif (push_button_sig3 = 1 and push_button_sig_display_lap = 0) then displayer <= '0'; if (buttonbus(2) = '1') then push_button_sig_save_lap <= 1; elsif (buttonbus(2) = '0') then push_button_sig_save_lap <= 0; push_button_sig2 <= push_button_sig_save_lap; if (push_button_sig2 = 0 and push_button_sig_save_lap = 1) then lap <= '1'; lap_count <= lap_count + 1; if (lap_count = 3) then lap_count <= 1; elsif (push_button_sig2 = 1 and push_button_sig_save_lap = 0) then lap <= '0'; if (buttonbus(0) = '1') then push_button_sig_start <= 1; elsif (buttonbus(0) = '0') then push_button_sig_start <= 0; push_button_sig1 <= push_button_sig_start; if (push_button_sig1 = 0 and push_button_sig_start = 1) then en <= not en; lap_display <= 0; if (buttonbus(1) = '1' and en = '0') then lap_count <= 0; lap_display <= 0; end process; end Behavioral;
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