标签：取整 else span log style 注释 code 好运 key
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很讨厌码迷这种爬虫网站爬取整篇程序，所以还是加些字会好一点；
做的期末EDA实训关于交通灯；题目要求的是要做一个东西南北向的交通灯；有数码管倒计时，LED定时换颜色；复位和交通管制等功能；
LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; USE IEEE.STD_LOGIC_UNSIGNED.ALL; ENTITY JTD IS PORT (CLK1KHZ : IN STD_LOGIC; --1KHZ输入 KEY : IN STD_LOGIC; --1KHZ输入 Y1,G1,R1 : OUT STD_LOGIC; --东西向灯 R2,Y2,G2 : OUT STD_LOGIC; --南北向灯 MOTOR : OUT STD_LOGIC; --MOTOR PWM : OUT STD_LOGIC; --MOTOR WOK,RESET: IN STD_LOGIC; --复位和管制 SEG : OUT STD_LOGIC_VECTOR (6 DOWNTO 0) := "0000000";--段选 CSG : OUT STD_LOGIC_VECTOR (2 DOWNTO 0) := "111"; --位选 RRCK,RSI,RSCK,GRCK,GSI,GSCK : OUT STD_LOGIC; --红绿控制位 RCK1,SI1,SCK1,RCK2,SI2,SCK2 : OUT STD_LOGIC; --12io位 RCK3,SI3,SCK3,RCK4,SI4,SCK4 : OUT STD_LOGIC; --34io位 Q : OUT STD_LOGIC_VECTOR (15 DOWNTO 0)); --流水灯 END;
以上声明库，实体等，我加了一些其他东西，流水灯；16x16红绿点阵，直流电机等，为了实训能多加点分而已，都有注释，可以选择性的用自己的一些端口和功能；
ARCHITECTURE DECL OF JTD IS SIGNAL CLK1HZ : STD_LOGIC:= ‘0‘; --分频1HZ SIGNAL CLK10HZ : STD_LOGIC:= ‘0‘; --分频HZ SIGNAL CLK100HZ : STD_LOGIC:= ‘0‘; --分频HZ SIGNAL STATUS : INTEGER RANGE 1 TO 19 := 1;--数码管计时秒 SIGNAL STAWE : INTEGER RANGE 0 TO 35 := 0;--交通灯一轮计时36秒 SIGNAL STATUS1 : STD_LOGIC_VECTOR(1 DOWNTO 0) := "00"; SIGNAL EW : STD_LOGIC_VECTOR(7 DOWNTO 0) := "00011000"; SIGNAL NS : STD_LOGIC_VECTOR(7 DOWNTO 0) := "00010101";
以上声明结构体，用到了中间信号和一些变量，有注释，选择性修改；
PROCESS(CLK1KHZ) VARIABLE COUNT : INTEGER RANGE 0 TO 1000 := 1; VARIABLE COUNT1: INTEGER RANGE 0 TO 100 := 1; VARIABLE COUNT2: INTEGER RANGE 0 TO 10 := 1; BEGIN IF(RISING_EDGE(CLK1KHZ)) THEN IF (COUNT >= 1000) THEN COUNT := 1; CLK1HZ <= NOT CLK1HZ; --分频1hz ELSE COUNT := COUNT + 1; END IF; IF (COUNT1 >= 100) THEN COUNT1 := 1; CLK10HZ <= NOT CLK10HZ;--分频10HZ ELSE COUNT1 := COUNT1 + 1; END IF; IF (COUNT2 >= 10) THEN COUNT2 := 1; CLK100HZ <= NOT CLK100HZ;--分频100HZ ELSE COUNT2 := COUNT2 + 1; END IF; END IF; END PROCESS;
以上process将1khz分频为1，10，100hz；
------36秒轮回一次交通灯计时 PROCESS(CLK1HZ,WOK,STAWE,RESET) BEGIN IF (WOK = ‘0‘) THEN --按下工作键 IF(RISING_EDGE(CLK1HZ)) THEN --一次1hz时钟上升沿 STAWE <= STAWE + 1; END IF; IF STAWE = 36 THEN STAWE <= 0; END IF; END IF; IF (RESET = ‘0‘) THEN STAWE <= 1; END IF; --按下复位键那么时间归零，黄灯亮起 END PROCESS;
以上process将做一次交通灯轮回计时，包含了工作键和复位键
PROCESS(CLK10HZ,WOK) VARIABLE QS : STD_LOGIC_VECTOR (15 DOWNTO 0); BEGIN IF RISING_EDGE (CLK10HZ) THEN IF QS = 0 THEN QS := "1000000000000000"; ELSIF QS = "1111111111111111" THEN QS := "0000000000000000"; ELSE QS (14 DOWNTO 0) := QS (15 DOWNTO 1); --移位操作 END IF; END IF; Q<=QS; END PROCESS;
以上process为流水灯，0.1秒闪一个，用到的是移位思想；
-----STATUS状态计时 PROCESS(CLK1HZ,WOK,RESET) BEGIN IF (WOK = ‘0‘) THEN IF (RESET = ‘0‘) THEN STATUS <= 1; ELSIF(RISING_EDGE(CLK1HZ)) THEN CASE STATUS IS WHEN 1 => EW <= "00011000"; NS <= "00010101"; STATUS <= STATUS + 1; WHEN 2 => EW <= "00010111"; NS <= "00010100"; STATUS <= STATUS + 1; WHEN 3 => EW <= "00010110"; NS <= "00010011"; STATUS <= STATUS + 1; WHEN 4 => EW <= "00010101"; NS <= "00010010"; STATUS <= STATUS + 1; WHEN 5 => EW <= "00010100"; NS <= "00010001"; STATUS <= STATUS + 1; WHEN 6 => EW <= "00010011"; NS <= "00010000"; STATUS <= STATUS + 1; WHEN 7 => EW <= "00010010"; NS <= "00001001"; STATUS <= STATUS + 1; WHEN 8 => EW <= "00010001"; NS <= "00001000"; STATUS <= STATUS + 1; WHEN 9 => EW <= "00010000"; NS <= "00000111"; STATUS <= STATUS + 1; WHEN 10 => EW <= "00001001"; NS <= "00000110"; STATUS <= STATUS + 1; WHEN 11 => EW <= "00001000"; NS <= "00000101"; STATUS <= STATUS + 1; WHEN 12 => EW <= "00000111"; NS <= "00000100"; STATUS <= STATUS + 1; WHEN 13 => EW <= "00000110"; NS <= "00000011"; STATUS <= STATUS + 1; WHEN 14 => EW <= "00000101"; NS <= "00000010"; STATUS <= STATUS + 1; WHEN 15 => EW <= "00000100"; NS <= "00000001"; STATUS <= STATUS + 1; WHEN 16 => EW <= "00000011"; NS <= "00010101"; STATUS <= STATUS + 1; WHEN 17 => EW <= "00000010"; NS <= "00011000"; STATUS <= STATUS + 1; WHEN 18 => EW <= "00000001"; NS <= "00010111"; STATUS <= STATUS + 1; WHEN OTHERS => STATUS <= 1; END CASE; END IF; ELSE STATUS <= 1; END IF; END PROCESS; -------数码管 PROCESS(EW,NS,CLK1KHZ) VARIABLE Q1 : STD_LOGIC_VECTOR(3 DOWNTO 0); BEGIN IF(RISING_EDGE(CLK1KHZ)) THEN CASE STATUS1 IS WHEN "00" => Q1 := EW(7 DOWNTO 4); CSG <= "110"; STATUS1 <= STATUS1 + 1;WHEN "01" => Q1 := EW(3 DOWNTO 0); CSG <= "111"; STATUS1 <= STATUS1 + 1; WHEN "10" => Q1 := NS(7 DOWNTO 4); CSG <= "000"; STATUS1 <= STATUS1 + 1;WHEN "11" => Q1 := NS(3 DOWNTO 0); CSG <= "001"; STATUS1 <= "00"; WHEN OTHERS => Q1 := EW(7 DOWNTO 4); CSG <= "110"; STATUS1 <= "00"; END CASE; CASE Q1 IS WHEN "0000" => SEG <= "0111111"; WHEN "0001" => SEG <= "0000110"; WHEN "0010" => SEG <= "1011011"; WHEN "0011" => SEG <= "1001111"; --3 WHEN "0100" => SEG <= "1100110"; WHEN "0101" => SEG <= "1101101"; WHEN "0110" => SEG <= "1111101"; WHEN "0111" => SEG <= "0000111"; --7 WHEN "1000" => SEG <= "1111111"; WHEN "1001" => SEG <= "1101111"; WHEN OTHERS => SEG <= "0000000"; END CASE; END IF; END PROCESS;
以上两个process为数码管status和位选段选等，包含了复位等操作；
PROCESS(CLK1HZ,STAWE,WOK) BEGIN IF (WOK = ‘0‘) THEN--工作键工作 IF RISING_EDGE(CLK1HZ) THEN IF (STAWE < 36 ) AND (STAWE >= 18) THEN Y1 <= ‘0‘; R1 <= ‘0‘;G1 <= ‘1‘;--35-18秒绿灯 ELSIF (STAWE < 18) AND (STAWE >=4) THEN Y1 <= ‘0‘; R1 <= ‘1‘;G1 <= ‘0‘;--4 -17秒红灯 ELSE Y1 <= ‘1‘; R1 <= ‘0‘;G1 <= ‘0‘; --0 - 3秒黄灯 END IF; --南北向灯差4秒 IF (STAWE < 32 ) AND (STAWE >= 14) THEN Y2 <= ‘0‘; R2 <= ‘0‘;G2 <= ‘1‘;--31-14秒绿灯 ELSIF (STAWE < 14) AND (STAWE >= 0) THEN Y2 <= ‘0‘; R2 <= ‘1‘;G2 <= ‘0‘;--0 -13秒红灯 ELSE Y2 <= ‘1‘; R2 <= ‘0‘;G2 <= ‘0‘; --32-35秒黄灯 END IF; END IF; ELSE Y2 <= ‘0‘; R2 <= ‘1‘;G2 <= ‘0‘;Y1 <= ‘0‘; R1 <= ‘1‘;G1 <= ‘0‘;--交通管制红灯全亮 END IF; END PROCESS;
以上process为交通灯情况；结合36秒计时那个进程理解；
PROCESS(WOK) BEGIN IF (WOK= ‘1‘) THEN--工作键工作 MOTOR<=‘1‘;PWM<=‘1‘; ELSE MOTOR<=‘0‘; PWM<=‘0‘; --32-35秒黄灯 END IF; END PROCESS;
以上process为直流电机；交通管制下电机转动；
代码都有注释，理解上修改。端口等在Pin plan自己修改；祝好运，科科
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标签：取整 else span log style 注释 code 好运 key
原文地址：http://www.cnblogs.com/smartkeke/p/7056342.html
