VHDL||数字系统设计实验--基于VHDL的流水灯电路设计

秒速五厘米 2023-06-16 02:28 3阅读 0赞

## 实验目的： ##

1.  学习设计一个流水灯电路，并在实验板验证。
2.  学习简单时序电路的设计和硬件测试。
3.  学习使用VHDL语言方法进行逻辑设计输入。

## 实验内容： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU_size_16_color_FFFFFF_t_70][]

## 实验VHDL程序： ##

LIBRARY IEEE;
    USE IEEE.STD_LOGIC_1164.ALL;
    ENTITY H8 IS
    PORT(clk:IN STD_LOGIC;
    	  ena:IN STD_LOGIC;
    	  clr:IN STD_LOGIC;
         led:OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
    
    END;
    ARCHITECTURE CNT OF H8 IS
    signal A : integer range 0 to 7;
    	signal B : std_logic_vector(7 downto 0);
    	signal C : std_logic_vector(7 downto 0);
    begin
    P1:process(clk,clr,ena)
    	begin
    	if clr = '0' then C <= "00000000";
    	elsif ena = '1' 
    	then if clk'event and clk = '1' then A <= A + 1;
    	end if;
    	end if;
    end process P1;
    P2:process(A)
    	begin
    	case A is
    	when 0 => B <="00000001";
    	when 1 => B <="00000010";
    	when 2 => B <="00000100";
    	when 3 => B <="00001000";
    	when 4 => B <="00010000";
    	when 5 => B <="00100000";
    	when 6 => B <="01000000";
    	when 7 => B <="10000000";
    	end case;
    	end process P2;
    P3:process(clr)
    	begin
    	if clr ='0' then led <= C;
    	else led <= B;
    	end if;
    end process P3;
    end;

## 连线图 ##

参考下图管脚：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191124003348490.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191124003553168.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0pvY2tMaXU=,size_16,color_FFFFFF,t_70