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-- Author: Patrick Lehmann
-- License: MIT
--
-- A generic counter module used in the StopWatch example.
--
library IEEE;
use IEEE.std_logic_1164.all;
use IEEE.numeric_std.all;
use work.Utilities.all;
use work.StopWatch_pkg.all;
-- Toplevel module to demonstrate the translation of 4 slide-switches to 1 digit 7-segment display.
entity toplevel is
port (
NexysA7_GPIO_Switch : in std_logic_vector(3 downto 0);
NexysA7_GPIO_Seg7_Cathode_n : out std_logic_vector(7 downto 0);
NexysA7_GPIO_Seg7_Anode_n : out std_logic_vector(7 downto 0)
);
end entity;
architecture rtl of toplevel is
signal Cathode : std_logic_vector(7 downto 0);
signal Anode : std_logic_vector(7 downto 0);
begin
-- 7-segment encoder
encoder: entity work.seg7_Encoder
port map (
BCDValue => unsigned(NexysA7_GPIO_Switch),
Dot => '1',
Seg7Code => Cathode
);
-- convert low-active outputs
NexysA7_GPIO_Seg7_Cathode_n <= not Cathode;
NexysA7_GPIO_Seg7_Anode_n <= not x"01";
end architecture;
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