-------------------------------------------------
-------------------------------------------------
-- EE552 ASL Translator and Handheld keyboard developement VHDL Code
-- led_decoder.vhd
-- This decorder decodes five bit data from the glove into 8 bit data
-- The eight bit data will be used for hex LED display.
library ieee;
use ieee.std_logic_1164.all;


-- The decoder has five inputs from the glove information
-- The output is decorded into eight bit data. The data is eight bit
-- hex data
entity led_decoder is
	
    PORT ( 
--interface in is valid data recieved from the glove
      interface_in : IN std_logic_vector(4 downto 0); 
	  enable: IN  std_logic;
      led_data_out : OUT std_logic_vector(7 downto 0)); 
 end entity led_decoder;

architecture behavioral of led_decoder is
signal led_data: std_logic_vector(7 downto 0);
begin

decode: process(interface_in,enable) is
begin
	if enable = '1' then
		case interface_in is 
			when "00001" =>
			led_data <= "01000001";
			when "00010" =>
			led_data <= "01000010";
			when "00011" =>
			led_data <= "01000011";
			when "00100" =>
			led_data <= "01000100";
			when "00101" =>
			led_data <= "01000101";
			when "00110" =>
			led_data <= "01000110";
			when "00111" =>
			led_data <= "01000111";
			when "01000" =>
			led_data <= "01001000";
			when "01001" =>
			led_data <= "01001001";
			when "01010" =>
			led_data <= "01001010";
			when "01011" =>
			led_data <= "01001011";
			when "01100" =>
			led_data <= "01001100";
			when "01101" =>
			led_data <= "01001101";
			when "01110" =>
			led_data <= "01001110";
			when "01111" =>
			led_data <= "01001111";
			when "10000" =>
			led_data <= "01010000";
			when "10001" =>
			led_data <= "01010001";
			when "10010" =>
			led_data <= "01010010";
			when "10011" =>
			led_data <= "01010011";
			when "10100" =>
			led_data <= "01010100";
			when "10101" =>
			led_data <= "01010101";
			when "10110" =>
			led_data <= "01010110";
			when "10111" =>
			led_data <= "01010111";
			when "11000" =>
			led_data <= "01011000";
			when "11001" =>
			led_data <= "01011001";
			when "11010" =>
			led_data <= "01011010";
			when "11011" =>
			led_data <= "00100000";
			when "11100" =>
			led_data <= "00001000";
			when "11101" =>
			led_data <= "00101110";
			when "11110" =>
			led_data <= "00101100";
			when "11111" =>
			led_data <= "00001101";
		when others => 
			led_data <="00000000";
		end case;
		led_data_out <= led_data after 100 ns;
	end if;
			end process decode;
	
end behavioral;