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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity bin_to_7seg is
port(
clk_in: in std_logic;
bin_in: in unsigned(3 downto 0);
segs_out: out std_logic_vector(6 downto 0)
);
end;
architecture rtl of bin_to_7seg is
type seg_a is array(0 to 15) of std_logic_vector(6 downto 0);
constant seg_c: seg_a := (
"1111110", -- 0
"0110000", -- 1
"1101101", -- 2
"1111001", -- 3
"0110011", -- 4
"1011011", -- 5
"1011111", -- 6
"1110000", -- 7
"1111111", -- 8
"1111011", -- 9
"1110111", -- A
"0011111", -- B
"1001110", -- C
"0111101", -- D
"1001111", -- E
"1000111" -- F
);
signal cnt: integer range 0 to 6 := 6;
begin
process(clk_in)
begin
if rising_edge(clk_in) then
if cnt < 6 then
cnt <= cnt + 1;
end if;
if cnt = 6 then
cnt <= 0;
end if;
segs_out <= (others => '0');
segs_out(cnt) <= seg_c(to_integer(bin_in))(cnt);
end if;
end process;
end;
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