软件:Quartus
语言:VHDL
代码功能:
设计一个能进行拔河游戏的电路。
电路使用15个(或9个)发光二极管表示拔河的“电子绳”,开机后只有中间一个发亮,此即拔河的中心点。
游戏甲乙双方各持一个按钮,迅速地、不断地按动产生脉冲,谁按得快,亮点向谁方向移动,每按一次,亮点移动次。
亮点移到任一方终端二极管,这一方就获胜,此时双方按钮均无作用,输出保持,只有复位后才使亮点恢复到中心。
由裁判下达比赛开始命令后,甲乙双方才能输入信号,否则输入信号无效。
用数码管显示获胜者的盘数,每次比赛结束自动给获胜方加分。
FPGA代码Verilog/VHDL代码资源下载:www.hdlcode.com
本代码已在开发板验证,开发板如下,其他开发板可以修改管脚适配:
演示视频:
设计文档:
1. 工程文件
2. 程序文件
3. 程序编译
4. RTL图
状态图
5. 管脚分配
6. 仿真图
部分代码展示:
LIBRARY ieee; USE ieee.std_logic_1164.all; USE ieee.std_logic_unsigned.all; --控制模块 ENTITY bahe_ctrl IS PORT ( clk : IN STD_LOGIC;--标准时钟 reset_n : IN STD_LOGIC;--复位信号,低有效 reset_cnt : IN STD_LOGIC;--计数复位信号,低有效 shift1 : IN STD_LOGIC;--选手1 shift2 : IN STD_LOGIC;--选手2 led : OUT STD_LOGIC_VECTOR(6 DOWNTO 0);--7个led led_flash : OUT STD_LOGIC; win1_times :OUT STD_LOGIC_VECTOR(15 DOWNTO 0);--1号获胜次数 win2_times :OUT STD_LOGIC_VECTOR(15 DOWNTO 0)--2号获胜次数 ); END bahe_ctrl; ARCHITECTURE behave OF bahe_ctrl IS TYPE State_type IS (s_idle, s_start, s_left_shift, s_right_shift, s_win_1, s_win_2); -- 定义状态 SIGNAL state : State_Type; -- 创建信号 SIGNAL game_led : STD_LOGIC_VECTOR(6 DOWNTO 0) := "0001000"; SIGNAL win1_num : STD_LOGIC_VECTOR(15 DOWNTO 0) := "0000000000000000"; SIGNAL win2_num : STD_LOGIC_VECTOR(15 DOWNTO 0) := "0000000000000000"; SIGNAL cnt1 : STD_LOGIC_VECTOR(31 DOWNTO 0) := "00000000000000000000000000000000"; SIGNAL clk1 : STD_LOGIC := '0'; BEGIN PROCESS (clk) BEGIN IF (clk'EVENT AND clk = '1') THEN IF ((NOT(reset_n)) = '1') THEN state <= s_idle; ELSE CASE state IS WHEN s_idle =>--复位状态 state <= s_start; WHEN s_start =>--游戏中 IF (game_led = "1000000") THEN state <= s_win_1;--1号赢 ELSIF (game_led = "0000001") THEN state <= s_win_2;--2号赢 ELSIF (shift1 = '1') THEN state <= s_left_shift;--led左移 ELSIF (shift2 = '1') THEN state <= s_right_shift;--led右移 ELSE state <= s_start; END IF; WHEN s_left_shift =>--led左移 state <= s_start; WHEN s_right_shift =>--led右移 state <= s_start; WHEN s_win_1 => state <= s_win_1;--1号赢 WHEN s_win_2 => state <= s_win_2;--2号赢 WHEN OTHERS => END CASE; END IF; END IF; END PROCESS; PROCESS (clk) BEGIN IF (clk'EVENT AND clk = '1') THEN IF ((NOT(reset_n)) = '1') THEN--复位 game_led <= "0001000"; ELSIF (state = s_left_shift) THEN game_led <= (game_led(5 DOWNTO 0) & '0');--led左移 ELSIF (state = s_right_shift) THEN game_led <= ('0' & game_led(6 DOWNTO 1));--led右移 END IF; END IF; END PROCESS; PROCESS (clk) BEGIN IF (clk'EVENT AND clk = '1') THEN IF ((NOT(reset_cnt)) = '1') THEN--复位 win1_num <= "0000000000000000"; ELSIF (state = s_start and game_led = "1000000") THEN----1号赢 win1_num <=win1_num+ "0000000000000001";--加1 ELSE win1_num <=win1_num; END IF; END IF; END PROCESS; PROCESS (clk) BEGIN IF (clk'EVENT AND clk = '1') THEN IF ((NOT(reset_cnt)) = '1') THEN--复位 win2_num <= "0000000000000000"; ELSIF (state = s_start and game_led = "0000001") THEN----2号赢 win2_num <=win2_num+ "0000000000000001";--加1 ELSE win2_num <=win2_num; END IF; END IF; END PROCESS; PROCESS (clk) BEGIN IF (clk'EVENT AND clk = '1') THEN IF (cnt1 >= "00000000001111010000100100000000") THEN cnt1 <= "00000000000000000000000000000000"; clk1 <= NOT(clk1); ELSE cnt1 <= cnt1 + "00000000000000000000000000000001"; END IF; END IF; END PROCESS; --输出 win1_times<=win1_num; win2_times<=win2_num; led <= game_led; led_flash<=clk1; END behave;
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