VHDL闹钟系统设计.docx
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VHDL闹钟系统设计
电子与信息工程学院
课程设计报告
（2010—2011学年第一学期）
（本实验用MAXPLUS2软件和GW48实验箱）
2011年1月
课程设计题目：
闹钟系统设计及实现
目的与任务：
1、巩固专业基础知识及EDA的相关知识；
2、锻炼综合应用所学知识进行小型系统开发设计的能力；
3、培养学生将理论应用于实践的能力；
4、设计一个简单的闹钟系统。
内容和要求：
要求设计一个带闹钟功能的24小时计时器，计时器的外观如图1所示。
图1系统外观
它包括以下几个组成部分：
①显示屏：
4个七段数码管显示当前时间（时：
分）或设置的闹钟时间；一个发光二极管以1HZ的频率跳动，用于显示秒；
②按键key1，用于设置调时还是调分；
③按键key2，用于输入新的时间或新的闹钟时间，每按下一次，时或分加1；
④TIME（时间）键，用于确定新的时间设置；
⑤ALARM（闹钟）键，用于确定新的闹钟时间设置，或显示已设置的闹钟时间；
⑥扬声器，在当前时钟时间与闹钟时间相同时，发出蜂鸣声。
--key1输入作为计数器的触发信号用来选择数码管
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
USEIEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITYkey1_trans_hjcIS
PORT（
CLR_HJC:
INSTD_LOGIC;
KEY1_HJC:
INSTD_LOGIC;
Q_HJC:
BUFFERSTD_LOGIC_VECTOR（2DOWNTO0））;
ENDENTITYkey1_trans_hjc;
ARCHITECTUREHJCOFkey1_trans_hjcIS
BEGIN
PROCESS（CLR_HJC,KEY1_HJC）IS
BEGIN
IF（CLR_HJC='1'）THEN
Q_HJC<="000";
ELSIF（KEY1_HJC='1'ANDKEY1_HJC'EVENT）THEN
IF（Q_HJC="100"）THEN
Q_HJC<="001";
ELSE
Q_HJC<=Q_HJC+"001";
ENDIF;
ENDIF;
ENDPROCESS;
ENDARCHITECTUREHJC;
--key2用来设定数码管的值
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
USEIEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITYKEY2_TRANS_HJCIS
PORT（
CLR_HJC:
INSTD_LOGIC;
KEY2_HJC:
INSTD_LOGIC;
Q2_HJC:
BUFFERSTD_LOGIC_VECTOR（3DOWNTO0））;
ENDENTITYKEY2_TRANS_HJC;
ARCHITECTUREARTOFKEY2_TRANS_HJCIS
BEGIN
PROCESS（CLR_HJC,KEY2_HJC）IS
BEGIN
IF（CLR_HJC='1'）THEN
Q2_HJC<="0000";
ELSIF（KEY2_HJC='1'ANDKEY2_HJC'EVENT）THEN
IF（Q2_HJC="1001"）THEN
Q2_HJC<="0000";
ELSE
Q2_HJC<=Q2_HJC+"0001";
ENDIF;
ENDIF;
ENDPROCESS;
ENDARCHITECTUREART;
--实现选择数码管并赋值，
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
USEIEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITYKEYBUFFER_HJCIS
PORT（KEY1_CTRL_HJC:
INSTD_LOGIC_VECTOR（2DOWNTO0）;
KEY2_HJC:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
CLK_HJC:
INSTD_LOGIC;
CLR_HJC:
INSTD_LOGIC;
NEW_TIME_0_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_TIME_1_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_TIME_2_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_TIME_3_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0））;
ENDENTITYKEYBUFFER_HJC;
ARCHITECTUREHJCOFKEYBUFFER_HJCIS
SIGNALN_T_0:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALN_T_1:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALN_T_2:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALN_T_3:
STD_LOGIC_VECTOR（3DOWNTO0）;
BEGIN
PROCESS（CLR_HJC,CLK_HJC）IS
BEGIN
IF（CLR_HJC='1'）THEN
N_T_0<="0000";
N_T_1<="0000";
N_T_2<="0000";
N_T_3<="0000";
ELSIF（CLK_HJC='1'ANDCLK_HJC'EVENT）THEN
CASEKEY1_CTRL_HJCIS
WHEN"001"=>
N_T_0<=KEY2_HJC;
WHEN"010"=>
N_T_1<=KEY2_HJC;
WHEN"011"=>
N_T_2<=KEY2_HJC;
WHEN"100"=>
N_T_3<=KEY2_HJC;
WHENOTHERS=>
NULL;
ENDCASE;
ENDIF;
ENDPROCESS;
NEW_TIME_0_HJC<=N_T_0;
NEW_TIME_1_HJC<=N_T_1;
NEW_TIME_2_HJC<=N_T_2;
NEW_TIME_3_HJC<=N_T_3;
ENDARCHITECTUREHJC;
--时钟256HZ，通过分频器FQ1_HJC产生1HZ用来驱动LED，以1HZ闪烁
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
ENTITYFQ1_HJCIS
PORT（CLK_IN_HJC:
INSTD_LOGIC;
CLR_HJC:
INSTD_LOGIC;
CLK_OUT1_HJC:
OUTSTD_LOGIC）;
ENDENTITYFQ1_HJC;
ARCHITECTUREHJCOFFQ1_HJCIS
BEGIN
CLK1S:
PROCESS（CLK_IN_HJC,CLR_HJC）IS
SUBTYPET_SHORTISINTEGERRANGE0TO65535;
VARIABLECNT1:
T_SHORT;
BEGIN
IF（CLR_HJC='1'）THEN
CNT1:
=0;
CLK_OUT1_HJC<='0';
ELSIF（RISING_EDGE（CLK_IN_HJC））THEN
IF（CNT1<128）THEN
CLK_OUT1_HJC<='1';
CNT1:
=CNT1+1;
ELSIF（CNT1<256）THEN
CLK_OUT1_HJC<='0';
CNT1:
=CNT1+1;
ELSE
CNT1:
=0;
ENDIF;
ENDIF;
ENDPROCESSCLK1S;
ENDARCHITECTUREHJC;
--时钟256HZ，通过分频器FQ_HJC产生1/60HZ用来驱动计数器
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
ENTITYFQ_HJCIS
PORT（CLK_IN_HJC:
INSTD_LOGIC;
CLR_HJC:
INSTD_LOGIC;
CLK_OUT_HJC:
OUTSTD_LOGIC）;
ENDENTITYFQ_HJC;
ARCHITECTUREHJCOFFQ_HJCIS
BEGIN
CLK1F:
PROCESS（CLK_IN_HJC,CLR_HJC）IS
SUBTYPET_SHORTISINTEGERRANGE0TO65535;
VARIABLECNT:
T_SHORT;
BEGIN
IF（CLR_HJC='1'）THEN
CNT:
=0;
CLK_OUT_HJC<='0';
ELSIF（RISING_EDGE（CLK_IN_HJC））THEN
IF（CNT<7680）THEN
CLK_OUT_HJC<='1';
CNT:
=CNT+1;
ELSIF（CNT<15360）THEN
CLK_OUT_HJC<='0';
CNT:
=CNT+1;
ELSE
CNT:
=0;
ENDIF;
ENDIF;
ENDPROCESSCLK1F;
ENDARCHITECTUREHJC;
--技术模块，没有新时间时，以24制时钟规律在计数，最小单位1分钟，有新时间时改变系统时间
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
USEIEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITYCOUNTER_HJCIS
PORT（NEW_CURRENT_TIME_0_HJC:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_CURRENT_TIME_1_HJC:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_CURRENT_TIME_2_HJC:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
NEW_CURRENT_TIME_3_HJC:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
LOAD_NEW_C_HJC:
INSTD_LOGIC;
CLK_HJC:
INSTD_LOGIC;
CLR_HJC:
INSTD_LOGIC;
CURRENT_TIME_0_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
CURRENT_TIME_1_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
CURRENT_TIME_2_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0）;
CURRENT_TIME_3_HJC:
OUTSTD_LOGIC_VECTOR（3DOWNTO0））;
ENDENTITYCOUNTER_HJC;
ARCHITECTUREHJCOFCOUNTER_HJCIS
SIGNALI_CURRENT_TIME_0:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALI_CURRENT_TIME_1:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALI_CURRENT_TIME_2:
STD_LOGIC_VECTOR（3DOWNTO0）;
SIGNALI_CURRENT_TIME_3:
STD_LOGIC_VECTOR（3DOWNTO0）;
BEGIN
PROCESS（CLK_HJC,CLR_HJC,LOAD_NEW_C_HJC）IS
BEGIN
IF（CLR_HJC='1'）THEN
I_CURRENT_TIME_0<="0000";
I_CURRENT_TIME_1<="0000";
I_CURRENT_TIME_2<="0000";
I_CURRENT_TIME_3<="0000";
ELSIF（LOAD_NEW_C_HJC='1'）THEN
I_CURRENT_TIME_0<=NEW_CURRENT_TIME_0_HJC;
I_CURRENT_TIME_1<=NEW_CURRENT_TIME_1_HJC;
I_CURRENT_TIME_2<=NEW_CURRENT_TIME_2_HJC;
I_CURRENT_TIME_3<=NEW_CURRENT_TIME_3_HJC;
ELSIF（RISING_EDGE（CLK_HJC））THEN
IF（I_CURRENT_TIME_0<"1001"）THEN--分低位<9
I_CURRENT_TIME_0<=I_CURRENT_TIME_0+"0001";
ELSE
I_CURRENT_TIME_0<="0000";
IF（I_CURRENT_TIME_1<"0101"）THEN--分高位<5
I_CURRENT_TIME_1<=I_CURRENT_TIME_1+"0001";
ELSE
I_CURRENT_TIME_1<="0000";
IF（I_CURRENT_TIME_3<"0010"）THEN--时高位为0或1时
IF（I_CURRENT_TIME_2<"1001"）THEN--时低位<9
I_CURRENT_TIME_2<=I_CURRENT_TIME_2+"0001";
ELSE
I_CURRENT_TIME_2<="0000";
I_CURRENT_TIME_3<=I_CURRENT_TIME_3+"0001";
ENDIF;
ELSE
IF（I_CURRENT_TIME_2<"0011"）THEN--时高位为2时，时低位<3
I_CURRENT_TIME_2<=I_CURRENT_TIME_2+1;
ELSE
I_CURRENT_TIME_2<="0000";
I_CURRENT_TIME_3<="0000";
ENDIF;
ENDIF;
ENDIF;
ENDIF;
ENDIF;
ENDPROCESS;
CURRENT_TIME_0_HJC<=I_CURRENT_TIME_0;
CURRENT_TIME_1_HJC<=I_CURRENT_TIME_1;
CURRENT_TIME_2_HJC<=I_CURRENT_TIME_2;
CURRENT_TIME_3_HJC<=I_CURRENT_TIME_3;
ENDARCHITECTUREHJC;
--控制器，本系统有五个状态，S0-初始状态，S1-设置新时间状态S2-确认为时钟时间状态，S3-确认为闹钟时间状态S4-显示闹钟时间状态，控制器就是控制状态转换的
LIBRARYIEEE;
USEIEEE.STD_LOGIC_1164.ALL;
USEIEEE.STD_LOGIC_UNSIGNED.ALL;
ENTITYCONTROLLER_HJCIS
PORT（
KEY1_HJC:
INSTD_LOGIC;
ALARM_BUTTON_HJC:
INSTD_LOGIC;
TIME_BUTTON_HJC:
INSTD_LOGIC;
CLK_HJC:
INSTD_LOGIC;
CLR_HJC:
INSTD_LOGIC;
LOAD_NEW_A_HJC:
OUTSTD_LOGIC;
LOAD_NEW_C_HJC:
OUTSTD_LOGIC;
SHOW_NEW_TIME_HJC:
OUTSTD_LOGIC;
SHOW_A_HJC:
OUTSTD_LOGIC
）;
ENDENTITYCONTROLLER_HJC;
ARCHITECTUREHJCOFCONTROLLER_HJCIS
TYPET_STATEIS（S0,S1,S2,S3,S4）;
SUBTYPET_SHORTISINTEGERRANGE0TO65535;
CONSTANTKEY_TIMEOUT:
T_SHORT:
=2560;--从按键状态返回时等待10S
CONSTANTSHOW_ALARM_TIMEOUT:
T_SHORT:
=1280;--从闹钟时间返回时等待5S
SIGNALCURR_STATE:
T_STATE;
SIGNALNEXT_STATE:
T_STATE;
SIGNALCOUNTER_K:
T_SHORT;
SIGNALENABLE_COUNT_K:
STD_LOGIC;
SIGNALCOUNT_K_END:
STD_LOGIC;
SIGNALCOUNTER_A:
T_SHORT;
SIGNALENABLE_COUNT_A:
STD_LOGIC;
SIGNALCOUNT_A_END:
STD_LOGIC;
BEGIN
PROCESS（CLK_HJC,CLR_HJC）IS
BEGIN
IF（CLR_HJC='1'）THEN
CURR_STATE<=S0;
ELSEIF（RISING_EDGE（CLK_HJC））THEN
CURR_STATE<=NEXT_STATE;
ENDIF;
ENDIF;
ENDPROCESS;
PROCESS（KEY1_HJC,ALARM_BUTTON_HJC,TIME_BUTTON_HJC,
CURR_STATE,COUNT_A_END,COUNT_K_END）IS
BEGIN
NEXT_STATE<=CURR_STATE;
LOAD_NEW_A_HJC<='0';
LOAD_NEW_C_HJC<='0';
SHOW_A_HJC<='0';
SHOW_NEW_TIME_HJC<='0';
ENABLE_COUNT_K<='0';
ENABLE_COUNT_A<='0';
CASECURR_STATEIS
WHENS0=>
IF（KEY1_HJC='1'）THEN
NEXT_STATE<=S1;
SHOW_NEW_TIME_HJC<='1';
ELSIF（ALARM_BUTTON_HJC='1'）THEN
NEXT_STATE<=S4;
SHOW_A_HJC<='1';
ELSE
NEXT_STATE<=S0;
ENDIF;
WHENS1=>
IF（KEY1_HJC='1'）THEN
NEXT_STATE<=S1;
ELSIF（ALARM_BUTTON_HJC='1'）THEN
NEXT_STATE<=S2;
LOAD_NEW_A_HJC<='1';
ELSIF（TIME_BUTTON_HJC='1'）THEN
NEXT_STATE<=S3;
LOAD_NEW_C_HJC<='1';
ELSE
IF（COUNT_K_END='1'）THEN
NEXT_STATE<=S0;
ELSE
NEXT_STATE<=S1;
ENDIF;
ENABLE_COUNT_K<='1';
ENDIF;
SHOW_NEW_TIME_HJC<='1';
WHENS2=>
IF（ALARM_BUTTON_HJC='1'）THEN
NEXT_STATE<=S2;
LOAD_NEW_A_HJC<='1';
ELSE
NEXT_STATE<=S0;
ENDIF;
WHENS3=>
IF（TIME_BUTTON_HJC='1'）THEN
NEXT_STATE<=S3;
LOAD_NEW_C_HJC<='1';
ELSE
NEXT_STATE<=S0;
ENDIF;
WHENS4=>
IF（KEY1_HJC='1'）THEN
NEXT_STATE<=S1;
ELSE
NEXT_STATE<=S4;
IF（COUNT_A_END='1'）THEN
NEXT_STATE<=S0;
ELSE
NEXT_STATE<=S4;
SHOW_A_HJC<='1';
ENDIF;
ENABLE_COUNT_A<='1';
ENDIF;
WHENOTHERS=>
NULL;
ENDCASE;
ENDPROCESS;
COUNT_KEY:
PROCESS（ENABLE_COUNT_K,CLK_HJC）IS
BEGIN
IF（ENABLE_COUNT_K='0'）THEN
COUNTER_K<=0;
COUNT_K_END<='0';
ELSIF（RISING_EDGE（CLK_HJC））THEN
IF（COUNTER_K>=KEY_TIMEOUT）THEN
COUNT_K_END<='1';
ELSE
COUNTER_K<=COUNTER_K+1;
ENDIF;
ENDIF;
ENDPROCESSCOUNT_KEY;
COUNT_ALARM:
PROCESS（ENABLE_COUNT_A,CLK_HJC）IS
BEGIN
IF（ENABLE_COUNT_A='0'）THEN
COUNTER_A<=0;
COUNT_A_END<='0';
ELSIF（RISING_EDGE（CLK_HJC））THEN
IF（COUNTER_A>=SHOW_ALARM_TIMEOUT）THEN
COUNT_A_END<='1';
ELSE
COUNTER_A<=COUNTER_A+1;
ENDIF;
ENDIF;
ENDPROCESSCOUNT_ALARM;
ENDARCHITECTURE;
--显示驱动模块，是显示新时间还是闹钟时间，还是时钟时间
LIBRAR
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