vhdl8*8点阵闪烁

以下是VHDL语言实现8*8点阵闪烁的代码：

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity LED_Matrix is
    Port ( CLK : in  STD_LOGIC;
           RST : in  STD_LOGIC;
           ROW : out  STD_LOGIC_VECTOR (7 downto 0);
           COL : out  STD_LOGIC_VECTOR (7 downto 0));
end LED_Matrix;

architecture Behavioral of LED_Matrix is
    signal row_sel : integer range 0 to 7 := 0;
    signal col_sel : integer range 0 to 7 := 0;
    signal counter : integer range 0 to 10000000 := 0;
    signal matrix : std_logic_vector(63 downto 0) := (others => '0');
    signal led : std_logic := '0';
begin
    process(CLK, RST)
    begin
        if RST = '1' then
            row_sel <= 0;
            col_sel <= 0;
            counter <= 0;
            matrix <= (others => '0');
            led <= '0';
        elsif rising_edge(CLK) then
            if counter = 10000000 then
                counter <= 0;
                led <= not led;
            else
                counter <= counter + 1;
            end if;
            if led = '1' then
                matrix(row_sel * 8 + col_sel) <= '1';
            else
                matrix(row_sel * 8 + col_sel) <= '0';
            end if;
            col_sel <= col_sel + 1;
            if col_sel = 8 then
                col_sel <= 0;
                row_sel <= row_sel + 1;
                if row_sel = 8 then
                    row_sel <= 0;
                end if;
            end if;
        end if;
    end process;
    ROW <= std_logic_vector(to_unsigned(row_sel, 8));
    COL <= std_logic_vector(to_unsigned(col_sel, 8));
end Behavioral;

这段代码实现了一个8*8点阵的闪烁效果，每隔一段时间，点阵上的所有LED灯都会翻转一次。你可以在Quartus II平台上进行程序设计和仿真，然后将代码下载到FPGA板上进行实验。