利用8进制计数器与10进制计数器例化实现80进制计数器。将计数结果显示在数码管上,溢出将闪烁显示的Vhdl代码
时间: 2024-04-11 09:33:37 浏览: 21
以下是一个简单的VHDL代码示例,演示如何使用8进制计数器和10进制计数器来实现80进制计数器,并将结果显示在数码管上。当计数溢出时,数码管将闪烁显示。
```vhdl
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity Count80 is
port (
clk : in std_logic;
reset : in std_logic;
seg : out std_logic_vector(6 downto 0)
);
end entity;
architecture Behavioral of Count80 is
signal count8 : unsigned(2 downto 0);
signal count10 : unsigned(1 downto 0);
signal count80 : unsigned(6 downto 0);
signal blink : std_logic;
constant CLK_FREQ : integer := 50_000_000; -- 50 MHz clock frequency
constant COUNT_MAX : integer := 79; -- Maximum count value for 80 decimal digits
-- 7-segment display decoder
constant SEGMENT_MAP : std_logic_vector(9 downto 0) :=
"1000000", -- 0
"1111001", -- 1
"0100100", -- 2
"0110000", -- 3
"0011001", -- 4
"0010010", -- 5
"0000010", -- 6
"1111000", -- 7
"0000000", -- 8 (blank)
"0010000"; -- 9
begin
-- 8-bit counter process
process(clk, reset)
begin
if reset = '1' then
count8 <= (others => '0');
elsif rising_edge(clk) then
if count8 = 7 then
count8 <= (others => '0');
else
count8 <= count8 + 1;
end if;
end if;
end process;
-- 10-bit counter process
process(clk, reset)
begin
if reset = '1' then
count10 <= (others => '0');
elsif rising_edge(clk) then
if count10 = 9 then
count10 <= (others => '0');
else
count10 <= count10 + 1;
end if;
end if;
end process;
-- 80-bit counter process
process(clk, reset)
begin
if reset = '1' then
count80 <= (others => '0');
elsif rising_edge(clk) then
if count80 = COUNT_MAX then
count80 <= (others => '0');
blink <= not blink;
else
count80 <= count80 + 1;
end if;
end if;
end process;
-- Display driver process
process(count8, count10, count80, blink)
begin
if blink = '1' then
seg <= "1111111"; -- Display all segments as blank
else
case unsigned(count80) is
when 0 to 9 => seg <= SEGMENT_MAP(to_integer(count80));
when 10 to 19 => seg <= "1000000" & SEGMENT_MAP(to_integer(count80) - 10);
-- Add more cases for remaining digits as needed...
when others => seg <= "1111111"; -- Display all segments as blank if value is out of range
end case;
end if;
end process;
end architecture;
```
请注意,这只是一个简单的示例代码,实际上可能需要更多的逻辑和控制来实现完整的80进制计数器和数码管显示。您可能还需要根据实际的数码管硬件和接口进行适当的调整和修改。