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名稱：4位密碼鎖采用矩陣鍵盤輸入密碼（代碼在文末付費下載）

軟件：Quartus

語言：VHDL

代碼功能：

1、設(shè)計一個四位的電子密碼鎖，每按下一個數(shù)字鍵，就輸入一個數(shù)字，并在顯示器上顯示該數(shù)值，同時將先前輸入的數(shù)據(jù)左移。

2、此外，包含密碼清除（密碼右移），密碼更改（可以通過按鍵修改新密碼），密碼上鎖和密碼解除（按下解除首先檢查密碼是否正確，密碼正確就開鎖）功能。

3、密碼連續(xù)錯誤3次報警。

演示視頻：

部分代碼展示

--設(shè)計一個四位的電子密碼鎖，
--每按下一個數(shù)字鍵，就輸入一個數(shù)字，
--并在顯示器上顯示該數(shù)值，同時將先前輸入的數(shù)據(jù)左移。
--此外，包含密碼清除（密碼右移），
--密碼更改（可以通過按鍵修改新密碼），
--密碼上鎖和密碼解除（按下解除首先檢查密碼是否正確，密碼正確就開鎖）功能。
--密碼連續(xù)錯誤3次報警
LIBRARY?ieee;
???USE?ieee.std_logic_1164.all;
--頂層模塊
ENTITY?mimasuo?IS
???PORT?(
??????clk???????:?IN?STD_LOGIC;
??????L_row???????:?IN?STD_LOGIC_VECTOR(3?DOWNTO?0);--矩陣鍵盤行?
??????H_col???????:?OUT?STD_LOGIC_VECTOR(3?DOWNTO?0);--矩陣鍵盤列?
??????
??????confirm???:?IN?STD_LOGIC;--確認鍵
??????reset?????:?IN?STD_LOGIC;--重置鍵
??????modify????:?IN?STD_LOGIC;--修改鍵
??????lock_up???:?IN?STD_LOGIC;--鎖住鍵
??
???delect????:?IN?STD_LOGIC;--刪除鍵
??????
??????alarm?????:?OUT?STD_LOGIC;--報警
??????led_open??:?OUT?STD_LOGIC;--開鎖指示信號，高電平表示開鎖，低電平表示鎖住
??????
??????HEX0??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--數(shù)碼管顯示
??????HEX1??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--數(shù)碼管顯示
??????HEX2??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--數(shù)碼管顯示
??????HEX3??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0)--數(shù)碼管顯示
???);
END?mimasuo;
ARCHITECTURE?trans?OF?mimasuo?IS
--例化報警模塊
--4x4矩陣鍵盤模塊
COMPONENT?key_4x4?IS
???PORT?(
??????clk?????????:?IN?STD_LOGIC;
??????reset???????:?IN?STD_LOGIC;
??????L_row???????:?IN?STD_LOGIC_VECTOR(3?DOWNTO?0);--行?
??????H_col???????:?OUT?STD_LOGIC_VECTOR(3?DOWNTO?0);--列?
??????key_number??:?OUT?STD_LOGIC_VECTOR(15?DOWNTO?0)--按鍵鍵值
???);
END?COMPONENT;
--報警模塊
???COMPONENT?alarm_on?IS
??????PORT?(
?????????clk???????:?IN?STD_LOGIC;
?????????current_state?:?IN?STD_LOGIC_VECTOR(2?DOWNTO?0);
?????????alarm?????:?OUT?STD_LOGIC
??????);
???END?COMPONENT;
???--修改密碼模塊(寄存器模塊，存儲正確密碼)
???COMPONENT?reset_password?IS
??????PORT?(
?????????clk???????:?IN?STD_LOGIC;
?????????password??:?IN?STD_LOGIC_VECTOR(15?DOWNTO?0);
?????????correct_password?:?OUT?STD_LOGIC_VECTOR(15?DOWNTO?0);
?????????confirm???:?IN?STD_LOGIC;
?????????current_state?:?IN?STD_LOGIC_VECTOR(2?DOWNTO?0)
??????);
???END?COMPONENT;
???--例化顯示模塊
???COMPONENT?display?IS
??????PORT?(
?????????clk???????:?IN?STD_LOGIC;
?????????password??:?IN?STD_LOGIC_VECTOR(15?DOWNTO?0);--當前輸入密碼
?????????HEX0??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????HEX1??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????HEX2??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????HEX3??????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0)
??????);
???END?COMPONENT;
???--例化密碼輸入模塊
???COMPONENT?mima_input?IS
??????PORT?(
?????????clk???????:?IN?STD_LOGIC;
?????????key_0?????:?IN?STD_LOGIC;
?????????key_1?????:?IN?STD_LOGIC;
?????????key_2?????:?IN?STD_LOGIC;
?????????key_3?????:?IN?STD_LOGIC;
?????????key_4?????:?IN?STD_LOGIC;
?????????key_5?????:?IN?STD_LOGIC;
?????????key_6?????:?IN?STD_LOGIC;
?????????key_7?????:?IN?STD_LOGIC;
?????????key_8?????:?IN?STD_LOGIC;
?????????key_9?????:?IN?STD_LOGIC;
???delect????:?IN?STD_LOGIC;--刪除鍵
?????????current_state?:?IN?STD_LOGIC_VECTOR(2?DOWNTO?0);
?????????password??:?OUT?STD_LOGIC_VECTOR(15?DOWNTO?0)
??????);
???END?COMPONENT;
???--例化密碼鎖控制模塊
???COMPONENT?mimasuo_ctrl?IS
??????PORT?(
?????????clk???????:?IN?STD_LOGIC;
?????????password??:?IN?STD_LOGIC_VECTOR(15?DOWNTO?0);
?????????correct_password?:?IN?STD_LOGIC_VECTOR(15?DOWNTO?0);
?????????confirm???:?IN?STD_LOGIC;
?????????reset?????:?IN?STD_LOGIC;
?????????modify????:?IN?STD_LOGIC;
?????????lock_up???:?IN?STD_LOGIC;
?????????led_open??:?OUT?STD_LOGIC;
?????????current_state?:?OUT?STD_LOGIC_VECTOR(2?DOWNTO?0)
??????);
???END?COMPONENT;
???
???--定義信號
???SIGNAL?current_state????:?STD_LOGIC_VECTOR(2?DOWNTO?0);
???SIGNAL?password?????????:?STD_LOGIC_VECTOR(15?DOWNTO?0);
???SIGNAL?correct_password?:?STD_LOGIC_VECTOR(15?DOWNTO?0);

設(shè)計文檔：

1. 工程文件