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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;
-- Encoder that translates from 4-bit binary (BCD) to 7-segment code.
entity seg7_Encoder is
port (
BCDValue : in T_BCD;
Dot : in std_logic := '0';
Seg7Code : out std_logic_vector(7 downto 0)
);
end entity;
architecture rtl of seg7_Encoder is
begin
process(BCDValue, Dot)
variable temp : std_logic_vector(6 downto 0);
begin
case BCDValue is -- segments: GFEDCBA -- Segment Pos. Index Pos.
when x"0" => temp := "0111111"; --
when x"1" => temp := "0000110"; --
when x"2" => temp := "1011011"; -- AAA 000
when x"3" => temp := "1001111"; -- F B 5 1
when x"4" => temp := "1100110"; -- F B 5 1
when x"5" => temp := "1101101"; -- GGG 666
when x"6" => temp := "1111101"; -- E C 4 2
when x"7" => temp := "0000111"; -- E C 4 2
when x"8" => temp := "1111111"; -- DDD DOT 333 7
when x"9" => temp := "1101111"; --
when others => temp := "XXXXXXX"; --
end case;
Seg7Code <= Dot & temp;
end process;
end architecture;
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