Verilog 电子钟程序.docx
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Verilog电子钟程序
电子钟
二、电子钟
moduleclock（work_state,clock_on,clk_6MHz,clk_4Hz,in_set,display_set,clk_1024Hz,up,down,out1,out2,out3,out4,out5,out6,out7,out8,speaker）;
inputwork_state,clk_1024Hz,up,down,display_set,clk_6MHz,in_set,clock_on,clk_4Hz;
outputout1,out2,out3,out4,out5,out6,out7,out8,speaker;
wire[2:
0]in_set;
reg[3:
0]out1,out2,out3,out4,out5,out6,out7,out8;
reg[2:
0]display_state;
reg[7:
0]hour,minute,second,year,month,day,day_max;
reg[7:
0]hour_set,minute_set,second_set,day_set,month_set,year_set,day_set_max;
integercentury=20;
integeri=0;
regspeaker;
reg[7:
0]clock_hour,clock_minute,clock_second;
reg[3:
0]high,med,low;
reg[13:
0]divider,origin;
reg[7:
0]counter;
regout;
wirecarry;
//*****各初始值设置时对应的状态********//
parameterstate_yorh=3'b100,//设置年或小时对应的按键状态
state_morm=3'b010,//设置月或分对应的按键状态
state_dors=3'b001;//设置日或秒对应的按键状态
//***初始化时钟:
08年08月08日00:
00:
00*****//
initial
begin
year<=8;
year_set<=8;
month<=8;
month_set<=8;
day<=8;
day_set<=8;
hour<=0;
minute<=0;
second<=0;
clock_hour<=0;
clock_minute<=0;
clock_second<=0;
display_state<=0;
end
//******电子钟正常工作状态下/work_state等于0时,时钟处于工作状态*******//
always@（posedgeclk_1024Hz）//频率选择1024HZ
begin
if（i>=1023）
begin
i<=0;
if（work_state）
begin
second<=second_set;
minute<=minute_set;
hour<=hour_set;
day<=day_set;
month<=month_set;
year<=year_set;
end
else
begin
if（second>=59）
begin
second<=0;
if（minute>=59）
begin
minute<=0;
if（hour>=23）
begin
hour<=0;
if（day>=day_max）
begin
day<=1;
if（month>=12）
begin
month<=1;
if（year>=99）
year<=0;
else
year<=year+1;
end
else
month<=month+1;
end
else
day<=day+1;
end
else
hour<=hour+1;
end
else
minute<=minute+1;
end
else
second<=second+1;
end
end
else
i<=i+1;
end
//******数码管显示状态设置*******//
always@（posedgedisplay_set）
begin
if（display_state>=2）
display_state<=0;
else
display_state<=display_state+1;
end
//*闹钟模块设置，用clock_on控制闹钟，闹钟铃声播放时间为一分钟，可手动关闭闹钟**//
always@（posedgeclk_6MHz）
begin
if（clock_on）
begin
if（clock_hour==hour&&clock_minute==minute）
speaker<=out;
elsespeaker<=0;
end
elsespeaker<=0;
end
//*************设置时钟的初值*************************//
/*用up来触发,当down=0时,一个上升沿触发来时加1,否则减1.***/
always@（posedgeup）
begin
if（!
work_state）//时间处于正常工作状态时,使要设置的初始值保持同步
begin
second_set<=second;
minute_set<=minute;
hour_set<=hour;
day_set<=day;
month_set<=month;
year_set<=year;
end
else
begin
if（display_state==1）//当display_state==1时,则是设置年月日的初始值,否则是设置时间.
begin
if（down==0）
begin
case（in_set）
state_yorh:
begin
if（year_set>=99）
year_set<=0;
else
year_set<=year_set+1;
end
state_morm:
begin
if（month_set>=12）
month_set<=1;
else
month_set<=month_set+1;
end
state_dors:
begin
if（day_set>=day_set_max）
day_set<=1;
else
day_set<=day_set+1;
end
endcase
end
else
begin
case（in_set）
state_yorh:
begin
if（year_set<=0）
year_set<=99;
else
year_set<=year_set-1;
end
state_morm:
begin
if（month_set<=1）
month_set<=12;
else
month_set<=month_set-1;
end
state_dors:
begin
if（day_set<=1）
day_set<=day_set_max;
else
day_set<=day_set-1;
end
endcase
end
end
elseif（display_state==0）
begin
if（down==0）
begin
case（in_set）
state_yorh:
begin
if（hour_set>=23）
hour_set<=0;
else
hour_set<=hour_set+1;
end
state_morm:
begin
if（minute_set>=59）
minute_set<=0;
else
minute_set<=minute_set+1;
end
state_dors:
begin
if（second_set>=59）
second_set<=0;
else
second_set<=second_set+1;
end
endcase
end
else
begin
case（in_set）
state_yorh:
begin
if（hour_set<=0）
hour_set<=23;
else
hour_set<=hour_set-1;
end
state_morm:
begin
if（minute_set<=0）
minute_set<=59;
else
minute_set<=minute_set-1;
end
state_dors:
begin
if（second_set<=0）
second_set<=59;
else
second_set<=second_set-1;
end
endcase
end
end
elseif（display_state==2）
begin
if（down==0）
begin
case（in_set）
state_yorh:
begin
if（clock_hour>=23）
clock_hour<=0;
else
clock_hour<=clock_hour+1;
end
state_morm:
begin
if（clock_minute>=59）
clock_minute<=0;
else
clock_minute=clock_minute+1;
end
state_dors:
begin
if（clock_second>=59）
clock_second<=0;
else
clock_second<=clock_second+1;
end
endcase
end
else
begin
case（in_set）
state_yorh:
begin
if（clock_hour<=0）
clock_hour<=23;
else
clock_hour<=clock_hour-1;
end
state_morm:
begin
if（clock_minute<=0）
clock_minute<=59;
else
clock_minute<=clock_minute-1;
end
state_dors:
begin
if（clock_second<=0）
clock_second<=59;
else
clock_second<=clock_second-1;
end
endcase
end
end
end
end
//**********本年度当前月的天数的计算**********//
always@（dayorday_set）//当日期变化时,则其所处月份的天数;
begin
if（month==1||month==3||month==5||month==7||month==8||month==10||month==12）
day_max<=31;
elseif（month==4||month==6||month==9||month==11）
day_max<=30;
else
begin
if（（{century,year}%400==0）||（（{century,year}%4==0）&&（{century,year}%10!
=0）））
day_max<=29;
elseday_max<=28;
end
if（month_set==1||month_set==3||month_set==5||month_set==7||month_set==8||month_set==10||month_set==12）
day_set_max<=31;
elseif（month_set==4||month_set==6||month_set==9||month_set==11）
day_set_max<=30;
else
begin
if（（{century,year_set}%400==0）||（（{century,year_set}%4==0）&&（{century,year_set}%10!
=0）））
day_set_max<=29;
elseday_set_max<=28;
end
end
//**********数码管显示模块,display_state=1时,显示年月日,否则显示时间////
always@（posedgeclk_6MHz）
begin
if（!
work_state）
begin
if（display_state==1）
begin
out8<=year%10;
out7<=year/10;
out6<=13;
out5<=month%10;
out4<=month/10;
out3<=13;
out2<=day%10;
out1<=day/10;
end
elseif（display_state==0）
begin
out8<=hour%10;
out7<=hour/10;
out6<=15;
out5<=minute%10;
out4<=minute/10;
out3<=15;
out2<=second%10;
out1<=second/10;
end
elseif（display_state==2）
begin
out8<=clock_hour%10;
out7<=clock_hour/10;
out6<=12;
out5<=clock_minute%10;
out4<=clock_minute/10;
out3<=12;
out2<=clock_second%10;
out1<=clock_second/10;
end
end
else
begin
if（display_state==1）
begin
out8<=year_set%10;
out7<=year_set/10;
out6<=13;
out5<=month_set%10;
out4<=month_set/10;
out3<=13;
out2<=day_set%10;
out1<=day_set/10;
end
elseif（display_state==0）
begin
out8<=hour_set%10;
out7<=hour_set/10;
out6<=15;
out5<=minute_set%10;
out4<=minute_set/10;
out3<=15;
out2<=second_set%10;
out1<=second_set/10;
end
elseif（display_state==2）
begin
out8<=clock_hour%10;
out7<=clock_hour/10;
out6<=12;
out5<=clock_minute%10;
out4<=clock_minute/10;
out3<=12;
out2<=clock_second%10;
out1<=clock_second/10;
end
end
end
//*******用乐曲《梁祝》作为闹钟铃声*************//
assigncarry=（divider==16383）;
always@（posedgeclk_6MHz）
begin
if（carry）
divider<=origin;
else
divider<=divider+1;
end
always@（posedgecarry）
begin
out<=~out;//2分频产生方波信号
end
always@（posedgeclk_4Hz）
begin
case（{high,med,low}）//分频比预置
'b000000000011:
origin<=7281;
'b000000000101:
origin<=8730;
'b000000000110:
origin<=9565;
'b000000000111:
origin<=10310;
'b000000010000:
origin<=10647;
'b000000100000:
origin<=11272;
'b000000110000:
origin<=11831;
'b000001010000:
origin<=12556;
'b000001100000:
origin<=12974;
'b000100000000:
origin<=13516;
'b000000000000:
origin<=16383;
endcase
end
always@（posedgeclk_4Hz）
begin
if（counter==63）
counter<=0;//计时，以实现循环演奏
else
counter<=counter+1;
case（counter）//记谱
0:
{high,med,low}<='b000000000011;//低音“3”
1:
{high,med,low}<='b000000000011;//持续4个时钟节拍
2:
{high,med,low}<='b000000000011;
3:
{high,med,low}<='b000000000011;
4:
{high,med,low}<='b000000000101;//低音“5”
5:
{high,med,low}<='b000000000101;//发3个时钟节拍
6:
{high,med,low}<='b000000000101;
7:
{high,med,low}<='b000000000110;//低音“6”
8:
{high,med,low}<='b000000010000;//中音“1”
9:
{high,med,low}<='b000000010000;//发3个时钟节拍
10:
{high,med,low}<='b000000010000;
11:
{high,med,low}<='b000000100000;//中音“2”
12:
{high,med,low}<='b000000000110;//低音“6”
13:
{high,med,low}<='b000000010000;
14:
{high,med,low}<='b000000000101;
15:
{high,med,low}<='b000000000101;
16:
{high,med,low}<='b000001010000;//中音“5”
17:
{high,med,low}<='b000001010000;//发3个时钟节拍
18:
{high,med,low}<='b000001010000;
19:
{high,med,low}<='b000100000000;//高音“1”
20:
{high,med,low}<='b000001100000;
21:
{high,med,low}<='b000001010000;
22:
{high,med,low}<='b000000110000;
23:
{high,med,low}<='b000001010000;
24:
{high,med,low}<='b000000100000;//中音“2”
25:
{high,med,low}<='b000000100000;//持续11个时钟节拍
26:
{high,med,low}<='b000000100000;
27:
{high,med,low}<='b000000100000;
28:
{high,med,low}<='b000000100000;
29:
{high,med,low}<='b000000100000;
30:
{high,med,low}<='b000000100000;
31:
{high,med,low}<='b000000100000;
32:
{high,med,low}<='b000000100000;
33:
{high,med,low}<='b000000100000;
34:
{high,med,low}<='b000000100000;
35:
{high,med,low}<='b000000110000;//中音“3”
36:
{high,med,low}<='b000000000111;//低音“7”
37:
{high,med,low}<='b000000000111;
38:
{high,med,low}<='b000000000110;//低音“6”
39:
{high,med,low}<='b000000000110;
40:
{high,med,low}<='b000000000101;//低音“5”
41:
{high,med,low}<='b000000000101;
42:
{high,med,low}<='b000000000101;
43:
{high,med,low}<='b000000000110;//低音“6”
44:
{high,med,low}<='b000000010000;//中音“1”
45:
{high,med,low}<='b000000010000;
46:
{high,med,low}<='b000000100000;//中音“2”
47:
{high,med,low}<='b000000100000;
48:
{high,med,low}<='b000000000011;//低音“3”
49:
{high,med,low}<='b000000000011;
50:
{high,med,low}<='b000000010000;//中音“1”
51:
{high,med,low}<='b000000010000;
52:
{high,med,low}<='b000000000110;
53:
{high,med,low}<='b000000000101;//低音“5”
54:
{high,med,low}<='b000000000110;
55:
{high,med,low}<='b000000010000;//
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