基于状态机的交通灯控制

1、精选优质文档-倾情为你奉上精选优质文档-倾情为你奉上专心-专注-专业专心-专注-专业精选优质文档-倾情为你奉上专心-专注-专业交通灯状态机程序：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;AR

2、CHITECTURE 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; rl=1; gl=0; yl=0; mtime=9; counter_timerl=1;gl=0; yl=0; mtime=mtime-1; counter_time=conv_std_logic_vector(mtime,4)

3、; IF(mtime=1)THEN state:=G; mtimegl=1; rl=0;yl=0; mtime=mtime-1; counter_time=conv_std_logic_vector(mtime,4); IF(mtime=1)THEN state:=Y; mtimeyl=1; gl=0; rl=0; mtime=mtime-1; counter_time=conv_std_logic_vector(mtime,4); IF(mtime=1)THEN state:=R; mtime=9; ELSE state:=Y; END IF; END CASE;END IF;END PRO

4、CESS;END nan; 数码管显示： LIBRARY IEEE;USE IEEE.std_logic_1164.ALL;ENTITY led IS PORT(counter_time:IN std_logic_vector(3 DOWNTO 0); EN:IN std_logic; seven_seg_input:OUT std_logic_vector(7 DOWNTO 0);END led; ARCHITECTURE led_arch OF led ISSIGNAL counter_time_input:std_logic_vector(4 DOWNTO 0); SIGNAL seve

5、n_seg_input_reg:std_logic_vector(7 DOWNTO 0); BEGIN counter_time_inputseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_regseven_seg_input_reg=; END CASE; seven_se

6、g_input=seven_seg_input_reg; END PROCESS; END led_arch;分频器：LIBRARY IEEE;USE IEEE.std_logic_1164.ALL;ENTITY frequencies IS PORT(clk:IN std_logic; q:OUT std_logic);END frequencies;ARCHITECTURE behav OF frequencies ISBEGIN PROCESS(clk) VARIABLE time:integer RANGE 0 TO ; BEGIN IF rising_edge(clk) THEN time:=time+1; IF time=