基于状态机的交通灯控制(共3页).docx

精选优质文档-倾情为你奉上交通灯状态机程序：LIBRARY IEEE;USE IEEE.std_logic_1164.ALL;USE IEEE.std_logic_arith.ALL;ENTITY traffic_light_dianlian ISPORT(clk:IN std_logic; reset:IN std_logic; rl,gl,yl:OUT std_logic; counter_time:OUT std_logic_vector(3 DOWNTO 0);END ENTITY;ARCHITECTURE nan OF traffic_light_dianlian_32 ISSIGNAL mtime:integer RANGE 0 TO 9;BEGINPROCESS(clk,reset)TYPE state_type IS(R,G,Y);VARIABLE state:state_type;BEGINIF reset=1 THEN state:=R;