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ColorGenerator.vhd
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--License:
-- DigitalClockWithFPGA is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- DigitalClockWithFPGA is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with DigitalClockWithFPGA. If not, see <http://www.gnu.org/licenses/>.
--
--Description:
-- This software can ported to any FPGA board to display two adjustable digital
-- clocks with adjustable colors. The code was tested on Xilinx Spartan 3E and
-- Altera DE0 boards.
--
--Author:
-- Mustafa Ozcelikors
-- thewebblog.net
-- github.com/mozcelikors
-- <[email protected]>
-- Metin Kundakcioglu
-- <[email protected]>
--
--Note:
-- This code may contain Turkish commenting.
library ieee;
use ieee.std_logic_1164.all;
use IEEE.NUMERIC_STD.ALL;
entity ColorGenerator is
Port (
ChangeColorButton : in std_logic;
R_out : out std_logic_vector(3 downto 0);
G_out : out std_logic_vector(3 downto 0);
B_out : out std_logic_vector(3 downto 0)
);
end entity ColorGenerator;
architecture ColorGenerator of ColorGenerator is
signal ColorMode: integer range 0 to 5 := 0; --0:Blue 1:Red 2:Green
begin
process(ColorMode) is begin
if(ColorMode=0)then
R_out <= "0000";
G_out <= "0000";
B_out <= "1111";
elsif(ColorMode=1)then
R_out <= "1111";
G_out <= "0000";
B_out <= "0000";
elsif(ColorMode=2)then
R_out <= "0000";
G_out <= "1111";
B_out <= "0000";
elsif(ColorMode=3)then
R_out <= "1111";
G_out <= "1111";
B_out <= "0000";
elsif(ColorMode=4)then
R_out <= "0000";
G_out <= "1111";
B_out <= "1111";
else
R_out <= "1111";
G_out <= "0000";
B_out <= "1111";
end if;
end process;
process(ChangeColorButton) is begin
if(rising_edge(ChangeColorButton))then
if(ColorMode<5)then
ColorMode <= ColorMode + 1;
else
ColorMode <= 0;
end if;
end if;
end process;
end architecture ColorGenerator;