目录
下面是设计的细节，再这里，笔者的注释都写得很清楚，因此不会啰嗦的一段段解释，只介绍关键的部分，其余的详见代码注释即可（此处建议直接看代码更好，上面的知识一个框架而已）：
设计目的与要求
1、实现2层楼的简易电梯控制系统
2、电梯有4个按键
1楼外只有向上按键（KEY0），2楼外只有向下按键（KEY1），电梯内还有2个按键分别为1楼按键(KEY2)和2楼按键(KEY3）。所有楼层外和电梯内的按键产生的信号作为给电梯的运行请求信号
3、电梯有4个指示灯（LED0、 LED1 、 LED2 、 LED3）
LED0: 按下KEY0键,若电梯不在1楼，则LED0亮
LED1: 按下KEY1键,若电梯不在2楼，则LED1亮
LED2: 电梯在2楼，按KEY2键, 则LED2亮，电梯到1楼后LED2灭
LED3: 电梯在1楼，按KEY3键, 则LED3亮，电梯到2楼后LED3灭
4、有2个数码管，分别显示当前运行状态及楼层
（1）1个数码管显示当前运行状态，电梯有三个运行状态：待机、上行、下行
待机：电梯停在1楼或2楼且无请求信号时均为待机状态
上行状态：电梯停在1楼，有KEY1或KEY3被按下，进入上行状态
下行状态：电梯停在2楼，有KEY0或KEY2被按下，进入下行状态
（2）1个数码管显示所在楼层，显示1或2；每一层楼之间的运行时间间隔为秒
5、有2个拨码开关。
（1）复位开关。向下拨动后电梯复位回到1楼
（2）启动开关。向上拨动后，按键有效，电梯正常工作
6、附加功能
（1）电梯上行时，LED11至LED7五个指示灯从左到右每隔一秒点亮一个；
电梯下行时，LED7至LED11五个指示灯从右到左每隔一秒点亮一个
（2）电梯开始上行或下行时，在最左边两个数码管上倒计时显示运行时间4.9~0.0（秒），精度为0.1秒。到达新楼层时显示0.0（秒）
设计原理及方案
先看模块之间的关系：
?
Top:顶层模块
U0 (clk_div): 时钟分频模块，产生20ms时钟
U1 (ajxd)? ：按键消抖模块
U2 (control)：控制模块，控制LED[3:0]按键灯和LEDOUT[4:0]流水灯、电梯运行状态、所处楼层以及开启和复位
U3 (displine)：动态显示模块，显示电梯所在楼层、运行状态以及4.9~0.0s倒计时计数
?RTL分析：
下面是设计的细节，再这里，笔者的注释都写得很清楚，因此不会啰嗦的一段段解释，只介绍关键的部分，其余的详见代码注释即可（此处建议直接看代码更好，上面的知识一个框架而已）：
1）按键的检测
input [3:0]col?????????? // 定义4个按键KEY0、1、2、3输入
output [3:0]row???????? //定义一行[3:0]row,
assign row[3:0]=4'b0001? //固定这一行
2）按键消抖
检测到按键[3:0]col，输入消抖模块的btn_in
module ajxd(
input [3:0]btn_in,
input btn_clk,
output [3:0]btn_out
);
reg [3:0]btn0=0;//定义了btn0寄存器
reg [3:0]btn1=0;//定义了btn1寄存器
reg [3:0]btn2=0;//定义了btn2寄存器
//按键btn_in的消抖程序
assign btn_out=(btn2&btn1&btn0)|(~btn2&btn1&btn0);//btn_out信号 每按下一次按键，只产生一个上升沿
always@ (posedge btn_clk)
begin
btn0<=btn_in;
btn1<=btn0;
btn2<=btn1;
end
endmodule
需要注意的是上面的寄存器用的是4位的，这样就能一一对应4个按键，避免后面需要例化4次按键消抖模块
2）控制模块
在控制模块中，主要的思路就是设置一个32位的[31:0]number主计数器（clk时钟为50M）,number计数250M次就是5秒、500M次就是10秒，需要控制的东西就可以在这个过程中被执行，这个执行的过程时间是忽略不计的，对整体的5秒计数是不影响的，这里只举例部分的代码作为说明，具体的可以参考附页上的代码注释说明
因为按键消抖产生的信号[3:0]btn_out相对CLK时钟周期很长，所以要想按照这个思路进行下去就得把[3:0]btn_out缩短位一个CLK周期的单稳态信号[3:0]keyout.
?
always@(posedge clk)
begin
if((SW0==1)&&(i==0)&&(keyin!=4'b0000)) //将长的按键信号缩短位1个CLK时钟周期
begin
keyout<=keyin;
i<=1;
end
else if((i==1)&&(keyin!=4'b0000))
begin
keyout<=4'b0000;
end
else if((i==1)&&(keyout==4'b0000)&&(keyin==4'b0000)) i<=0;
4）按键LED灯、楼层、运行状态变化
主要是靠判断[3:0]keyout是否有输出（按键被按下），同时也要判断是否有第二次按下，并且禁止第三次按下按键
5）流水灯控制
//LED11--7控制
always@(number)
begin
if (state==2'b01)
case(number)
1: LEDOUT<=5'b10000;
50000000: LEDOUT<=5'b11000;
100000000:LEDOUT<=5'b11100;
150000000:LEDOUT<=5'b11110;
200000000:LEDOUT<=5'b11111;
250000000:if(second_press==0)LEDOUT<=5'b00000;
250000002:LEDOUT<=5'b10000; //此处要特别注意必须为250M+1以上
300000000:LEDOUT<=5'b11000;
350000000:LEDOUT<=5'b11100;
400000000:LEDOUT<=5'b11110;
450000000:LEDOUT<=5'b11111;
500000000:LEDOUT<=5'b00000;
default:;
endcase
另外一个state==2’b10是对称的，此处没写出来，具体可参见附页的源代码
6）动态显示模块
在这个模块中输入了楼层[1:0]floor、运行状态[1:0]state
input clk, //50M时钟
input [1:0]floor, //从控制模块中输入楼层[1:0]floor
input [1:0]state, //从控制模块中输入运行状态[1:0]state
input EN, //从控制模块中输入使能计数4.9s~0.0秒
output reg [7:0] seg, //段码输出
output reg [3:0] dig //位码输出
倒计时计数4.9s~0.0秒采用一个10进制和一个5进制计数器级联构成，注意显示的时候小数点得加上，因此seg输出时需要注意
//10进制计数器器
reg[3:0]Q1=0;
wire cy;
always@(posedge clk_10HZ)
begin
if(EN==1)
begin
if(Q1==0)Q1<=9;
else Q1<=Q1-1;
end
else Q1<=0;
end
assign cy=((EN==1)&&(Q1==0))?1'b1:1'b0;
//5进制计数器
reg[3:0]Q2=0;
always@(posedge clk_10HZ)
begin
if(cy==1)
begin
if(Q2==0)Q2<=4;
else Q2<=Q2-1;
end
end //两个计数器已经通过cy级联
附页（源代码）
TOP
module Top(
??? input clk,? ? ? ? ? ? ? ? ?//50M时钟
??? input [3:0]col,? ? ? ? ? // 定义时钟和4个按键输入
??? input SW0,? ? ? ? ? ? ? ?//定义SW0启动开关
??? input SW11,? ? ? ? ? ? ?//定义SW11复位开关
??? output [7:0] seg,????? //段码输出
??? output [3:0] dig,????? //位码输出
??? output [3:0]row,????? // 定义行
??? output [3:0]led,????? //LED0---LED4按键灯
??? output [4:0]LEDOUT //LED11----LED7流水灯
?????????? );
??? assign row[3:0]=4'b0001;? //固定一行row3
??? wire clk_20ms;????? ????// 20ms clk
??? wire [3:0]keyin;
??? reg [3:0]keyout;? ???????//脉宽变换后的按键信号
??? wire [1:0]floor;? ???????//定义楼层
??? wire [1:0]state;???????? //定义电梯的状态
??? wire enable;
???
//例化 时钟模块
??? clk_div u0( .clk_in(clk), .clk_out(clk_20ms));
//例化 按键消抖模块
??? ajxd u1( .btn_clk(clk_20ms), .btn_in(col), .btn_out(keyin));
//例化 控制模块
??? control u2 (.clk(clk), .keyin(keyin), .SW0(SW0), .SW11(SW11), .led(led),
??????????????? .LEDOUT(LEDOUT),.enable_link(enable), .floor_link(floor), .state_link(state));
//例化 动态显示模块
??? displine u3(.clk(clk),.floor(floor),.state(state),.EN(enable), .seg(seg),.dig(dig));
endmodule
注：本代码完全由本人自主完成，所有功能都已经实现，代码中有关键的注释，各个模块之间的连接关系前面的关系框图中已展示，建议结合RTL分析图一起看能够更加轻松。另外，本代码仅供参考，切勿抄袭哦！
u0: clk_div
module clk_div(clk_in,clk_out);
????? input clk_in;
????? output reg clk_out=0;//用reg后面always中需要改变数值
???? reg[24:0] clk_div_cnt=0;
//分频为50Hz的信号
??????? always @ (posedge clk_in)
??????? begin
??????????? if (clk_div_cnt==499999)//10M分频
??????????? begin
??????????????? clk_out=~clk_out;
??????????????? clk_div_cnt=0;
??????????? end
??????????? else
??????????????? clk_div_cnt=clk_div_cnt+1;
?????? end
?endmodule
注：本代码完全由本人自主完成，所有功能都已经实现，代码中有关键的注释，各个模块之间的连接关系前面的关系框图中已展示，建议结合RTL分析图一起看能够更加轻松。
u1: ajxd
module ajxd(
??? input [3:0]btn_in,
??? input btn_clk,
??? output [3:0]btn_out
??? );?
??? reg? [3:0]btn0=0;//定义了btn0寄存器
??? reg? [3:0]btn1=0;//定义了btn1寄存器
reg? [3:0]btn2=0;//定义了btn2寄存器
? //在下面参考课件程序，自己填写对按键btn_in的消抖程序
? assign btn_out=(btn2&btn1&btn0)|(~btn2&btn1&btn0);//btn_out信号 每按下一次按键，只产生一个上升沿
????????????????????????????????????????????????????
??? always@ (posedge btn_clk)
????? begin
????????? btn0<=btn_in;
????????? btn1<=btn0;
????????? btn2<=btn1;
????? end
endmodule
注：本代码完全由本人自主完成，所有功能都已经实现，代码中有关键的注释，各个模块之间的连接关系前面的关系框图中已展示，建议结合RTL分析图一起看能够更加轻松。另外，本代码仅供参考，切勿抄袭哦！
u2: control
module control(
input clk,? ?????????????????????//50M时钟输入
input [3:0]keyin,????????????????? //消抖后的按键信号输入
input SW0,????????????????????? //SW0拨码按键输入
input SW11,???????????????????? //SW11拨码按键输入
output reg [3:0]led =0,???????????? //输出楼层led
output reg [4:0]LEDOUT=0,??????? //流水灯LED灯输出
output [1:0]floor_link,????????????? //楼层信号输出
output [1:0]state_link,????????????? //电梯运行状态信号输出
output enable_link
?????? );
?reg [3:0]keyout =0; ??????????????//变换后的按键信号
?reg [1:0]floor = 1; ???????????????//定义楼层???
?reg[1:0]state = 0; ????????????????//定义电梯的状态，00待机、01上升、10下降
?reg enable=0;???????? ??????????//定义使能2位5秒计数器
?assign floor_link = floor;
?assign state_link = state;
?assign enable_link = enable;????? ??//连接线接出去
?reg i=0;?????????????????????? ?//keyout转换标志位
?reg [3:0]first_press =0;??????? ????//第一次按下按键 变量1????
?reg [3:0]second_press =0;??????? ??//第一次按下按键 变量2
?reg? limitied_third_press =0;??? ???//禁止第三次按下，第三次按下无效
?reg flag=0;????????????????????? //计数器的标志位
?reg f1=0;????????????????????? ?//标志位 1
?reg f2=0;?????????????????????? //标志位 2
?reg [31:0]number=0;????????????? //定义一个32位的计数器
//LED控制部分
?always@(posedge clk)
??? begin???????????????
??????? if((SW0==1)&&(i==0)&&(keyin!=4'b0000))????? //将长的按键信号缩短位1个CLK时钟周期的单稳态信号
??????????????? begin
????????????????? keyout<=keyin;
????????????????? i<=1;
??????????????? end
??????? else if((i==1)&&(keyin!=4'b0000))
??????????????? begin
????????????????? keyout<=4'b0000;
??????????????? end
??????? else if((i==1)&&(keyout==4'b0000)&&(keyin==4'b0000)) i<=0;
??????????????
?????????????????????????
// LED灯、楼层、运行状态变化
?????? if(keyout[0])??????? ?????????????????????????//KEY0被按下
??????????? begin
??????????????? if((first_press==0)&&(floor==2)) ??????//如果电梯在2楼且只按下一次按键KEY0
??????????????????? begin
??????????????????????? led[0]<=1;???????????????? //led[0]亮
??????????????????? ????state<=2'b10;????????????? //状态变为下降状态
??????????????????????? first_press[0]<=1;???????? ??//第一次按下标志位变为1
??????????????????????? flag <=1;????????????????? //主计数器标志位置数为1，本次操作结束，开始计数5秒
??????????????????????? enable<=1;??????????????? //使能输出，用于后面的动态显示模块的使能输入
??????????????????? end
??????????????? else if((first_press!=0)&&(state==1)&&(limitied_third_press==0))
??????????????????? begin?????????????????????? ??//如果这次按下KEY0是第二次按下，并且没有第三次按下
??????????????????????? led[0]<=1;
??????????????????????? second_press[0]<=1;???????? //第二次按下标志位置数为1
??????????????????????? limitied_third_press<=1;??? ??//第三次按下标志位置数为1
????????????????????????????????????????????
??????????????????? end
??????????????? else if(limitied_third_press) led[0]<=0;?? //第三次按下无效
???????????? end???????
?????? else if(keyout[1])
????????? begin
?????????????? if((first_press==0)&&(floor==1))
?????????????????? begin
??????????????????????? led[1]<=1;
?????????? ?????????????state<=2'b01;
??????????????????????? first_press[1]<=1;
??????????????????????? flag <=1;
??????????????????????? enable<=1;
?????????????????? end
?????????????? else if((first_press!=0)&&(state==2)&&(limitied_third_press==0))
????????????? ?????begin
??????????????????????? led[1]<=1;
??????????????????????? second_press[1]<=1;
??????????????????????? limitied_third_press<=1;??????????????????????????
?????????????????? end???????????????????
????????????? else if(limitied_third_press) led[0]<=0;????????????????????????????????????????????
??????????? end
??????? else if(keyout[2])
???????????????? begin
???????????????????? if((first_press==0)&&(floor==2))
???????????????????????? begin
???????????????????????????? led[2]<=1;
???????????????????????????? state<=2'b10;
???????????????????????????? first_press[2]<=1;
???????????????????????????? flag <=1;
???????????????????????????? enable<=1;
???????????????????????? end
???????????????? ????else if((first_press!=0)&&(state==1)&&(limitied_third_press==0))
???????????????????????? begin
???????????????????????????? led[2]<=1;
???????????????????????????? second_press[2]<=1;
???????????????????????????? limitied_third_press <=1;???????????????????????????
???????????????????????? end
???????????????????? else if(limitied_third_press) led[3]<=0;
???????????????? end???????
????????????????????????????
???????? else? if(keyout[3])
?????????????? begin
?????????????????? if((first_press==0)&&(floor==1))
?????????????????????? begin
?????????????????????????? led[3]<=1;
?????????????????????????? state<=2'b01;
?????????????????????????? first_press[3]<=1;
?????????????????????????? flag <=1;
?????????????????????????? enable<=1;
??????????????????????? end
????????????????? else if((first_press!=0)&&(state==2)&&(limitied_third_press==0))
????????????????????? begin
????????????????????????? led[3]<=1;
????????????????????????? second_press[3]<=1;
????????????????????????? limitied_third_press<=1;
????????????????????? end
???????????????? else if(limitied_third_press) led[3]<=0;?????????????????????????
????? ?????????end
//SW11复位
???????? else if((floor == 2)&&(state==2'b00)&&(SW11==0))
?????????????? begin
??????????????????? led<=0;
??????????????????? state<=2'b10;
??????????????????? flag<=1;
??????????????????? enable<=1;
?????????????? end
//标志位f1成立下进行的操作
???????? else if(f1)?????????
??????????????? begin
??????????????????? if (floor==1)? floor <=2;
??????????????????? else floor =1;
???????????????????
??????????????????? if(second_press==0)
??????????????????????? begin
??????????????????????????? led<=0;
??????????????????????????? state <=2'b00;
??????????????????????????? flag<=0;
??????????????????????????? f1<=0;
??????????????????????????? number<=0;
??????????????????????????? first_press <=0;
??????????????????????????? enable<=0;
??????????????????????? end
??????????????????? else ?begin
??????????????????????????? case(first_press)
??????????????????????????? 4'b0001:led[0]<=0;
??????????????????????????? 4'b0010:led[1]<=0;
??????? ????????????????????4'b0100:led[2]<=0;
??????????????????????????? 4'b1000:led[3]<=0;
??????????????????????????? default:led<=0;
??????????????????????????? endcase
??????????????????????????? number<=number+1;
??????????????????????????? state<=~state;
??????????????????????????? f1<=0;???????????????????????????
??????????????????????? end
???????????????????? if (SW11==0)
????????????????????????? begin
????????????????????????? state<=2'b00;
??????????????? ??????????flag<=0;
????????????????????????? enable<=0;
????????????????????????? end
?????????????? end
?//标志位f2成立下进行的操作
?????????? else if(f2)
??????????????? begin
??????????????????? if (floor==1)? floor <=2;
??????????????????? else floor =1;
??????????????????? led<=0;
??????????????????? state<=0;
??????????????????? first_press<=0;
??????????????????? second_press<=0;
??????????????????? flag<=0;
?????????????? ?????f2<=0;
??????????????????? number<=0;
??????????????????? limitied_third_press<=0;
??????????????????? enable<=0;???????????????????????????????????????
??????????????? end
???????????????
??????????? else if (number==250000000)
?????????????????? ???begin
?????????????????????????? f1<=1;
?????????????????????????? number <= number+1;
????????????????????? end
??????????? else if (number==500000000)
???????????????????? begin
?????????????????????????? f2<=1;
?????????????????????????? number <= number+1;
???????????????????? end
??????????? else
??????????????? begin
??????????????????? if (flag)? number<= number+1;
??????????????? end?????????????
????? end
??? //LED11--7控制
??? always@(number)
??? begin
??????????? if (state==2'b01)
??????????????? case(number)
??????????????? 1:??????? LEDOUT<=5'b10000;
??????????????? 50000000: LEDOUT<=5'b11000;
??????????????? 100000000:LEDOUT<=5'b11100;
??????????????? 150000000:LEDOUT<=5'b11110;
??????????????? 200000000:LEDOUT<=5'b11111;
??????????????? 250000000:if(second_press==0)LEDOUT<=5'b00000;
???????????????
??????????????? 250000002:LEDOUT<=5'b10000;
??????????????? 300000000:LEDOUT<=5'b11000;
??????????????? 350000000:LEDOUT<=5'b11100;
??????????????? 400000000:LEDOUT<=5'b11110;
??????????????? 450000000:LEDOUT<=5'b11111;
??????????????? 500000000:LEDOUT<=5'b00000;
??????????????? default:;
??????????????? endcase
???????????
??????????? else if(state==2'b10)
??????????????? case(number)
??????????????? 1:??????? LEDOUT<=5'b00001;
??????????????? 50000000: LEDOUT<=5'b00011;
??????????????? 100000000:LEDOUT<=5'b00111;
??????????????? 150000000:LEDOUT<=5'b01111;
??????????????? 200000000:LEDOUT<=5'b11111;
??????????????? 250000000: if(second_press==0)LEDOUT<=5'b00000;
??????????????? 250000002:LEDOUT<=5'b00001;
??????????????? 300000000:LEDOUT<=5'b00011;
??????????????? 350000000:LEDOUT<=5'b00111;
??????????????? 400000000:LEDOUT<=5'b01111;
??????????????? 450000000:LEDOUT<=5'b11111;
??????????????? 500000000:LEDOUT<=5'b00000;
??????????????? default:;
??????????????? endcase??????????
end
endmodule
注：本代码完全由本人自主完成，所有功能都已经实现，代码中有关键的注释，各个模块之间的连接关系前面的关系框图中已展示，建议结合RTL分析图一起看能够更加轻松。另外，本代码仅供参考，切勿抄袭哦！
u3: displine
module displine(
??? input clk,
??? input [1:0]floor,
??? input [1:0]state,
??? input EN,
??? output reg [7:0] seg,
??? output reg [3:0] dig
????? );
????? //分频作为4进制计数器的时钟
????? reg[24:0] clk_div_cnt=0;
????? reg clk_div=0;
????? always @ (posedge clk)
????? begin
??????????? if (clk_div_cnt==25000)? //分频
??????????? begin
????????????????? clk_div=~clk_div;
????????????????? clk_div_cnt=0;
??????????? end
??????????? else
??????????? ??? clk_div_cnt=clk_div_cnt+1;
????? end
????? //分频作为10进制计数器的时钟（10HZ）??
????? reg[24:0] clk_div_10=0;
????? reg clk_10HZ=0;
??? always @ (posedge clk)
??? begin
??????? if (clk_div_10==2499999)
??????? begin
??????????? clk_10HZ=~clk_10HZ;
??????????? clk_div_10=0;
??????? end
??????? else
??????????? clk_div_10=clk_div_10 +1;
?? end
?//4进制计数器
??? reg [2:0] num=0;
??? always @ (posedge clk_div)
??? begin
??????? if (num>=3)
??????????? num=0;
??????? else
??????????? num=num+1;
??? end
?//10进制计数器器
??? reg[3:0]Q1=0;
??? wire cy;
??? always@(posedge clk_10HZ)
??? begin
??????? if(EN==1)
??????????? begin
???????????? ???if(Q1==0)Q1<=9;
??????????????? else??? Q1<=Q1-1;??????????????????
??????????? end
??????? else Q1<=0;
??? end
??? assign cy=((EN==1)&&(Q1==0))?1'b1:1'b0;
?//5进制计数器
??? reg[3:0]Q2=0;
??? always@(posedge clk_10HZ)
??? begin
??????? if(cy==1)
??????????? begin
??????????????? if(Q2==0)Q2<=4;
??????????????? else???? Q2<=Q2-1;
??????????? end
end
????? //译码器
????? always @ (num)
????? begin????
??????????? case(num)
??????????? 0:dig=4'b1110;
??????????? 1:dig=4'b1101;
??????????? 2:dig=4'b1011;
??????????? 3:dig=4'b0111;
??????????? default: dig=0;
??????????? endcase
????? end
????? //显示译码器
????? always@(num)
????? begin
????? ?? if(num == 0)
????? ?????? begin
??????????????? case(floor)
??????????????? 2'b01: seg=8'h06;
??????????????? 2'b10: seg=8'h5b;
??????????????? default: seg=0;
??????????????? endcase
??????????? end
??????? else if (num == 1)
??????????? begin
??????????????? case(state)
??????????????????????? 2'b00: seg=8'h40;
??????????????????????? 2'b01: seg=8'h01;
??????????????????????? 2'b10: seg=8'h08;
??????????????????????? default: seg=0;
??????????????? endcase???????????????
??????????? end
??????? else if (num == 2)
??????????? begin
??????????????? case(Q1)
??????????????? 4'h0: seg=8'h3f;// DP,GFEDCBA
??????????????? 4'h1: seg=8'h06;
?????????? ?????4'h2: seg=8'h5b;
??????????????? 4'h3: seg=8'h4f;
??????????????? 4'h4: seg=8'h66;
??????????????? 4'h5: seg=8'h6d;
??????????????? 4'h6: seg=8'h7d;
??????????????? 4'h7: seg=8'h07;
??????????????? 4'h8: seg=8'h7f;
??????????????? 4'h9: seg=8'h6f;
?? ?????????????default: seg=0;
??????????????? endcase
??????????? end
??????? else if (num == 3)
??????????? begin
??????????????? case(Q2)
??????????????? 4'h0: seg=8'hbf;// DP,GFEDCBA
??????????????? 4'h1: seg=8'h86;
??????????????? 4'h2: seg=8'hdb;
??????????????? 4'h3: seg=8'hcf;
??????????????? 4'h4: seg=8'he6;
??????????????? 4'h5: seg=8'hed;
??????????????? default: seg=0;
??????????????? endcase
??????????? end
????? end???
endmodule
注：本代码完全由本人自主完成，所有功能都已经实现，代码中有关键的注释，各个模块之间的连接关系前面的关系框图中已展示，建议结合RTL分析图一起看能够更加轻松。另外，本代码仅供参考，切勿抄袭哦！
附页（约束文件）
#时钟约束文件
set_property PACKAGE_PIN D4 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports clk]
#按键检测的约束文件
set_property PACKAGE_PIN K3 [get_ports {row[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {row[0]}]
set_property PACKAGE_PIN M6 [get_ports {row[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {row[1]}]
set_property PACKAGE_PIN P10 [get_ports {row[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {row[2]}]
set_property PACKAGE_PIN R10 [get_ports {row[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {row[3]}]
##指定KEY0、KEY1、KEY2、KEY3作为按键
set_property PACKAGE_PIN R12 [get_ports col[0]]
set_property IOSTANDARD LVCMOS33 [get_ports col[0]]
set_property PACKAGE_PIN T12 [get_ports col[1]]
set_property IOSTANDARD LVCMOS33 [get_ports col[1]]
set_property PACKAGE_PIN R11 [get_ports col[2]]
set_property IOSTANDARD LVCMOS33 [get_ports col[2]]
set_property PACKAGE_PIN T10 [get_ports col[3]]
set_property IOSTANDARD LVCMOS33 [get_ports col[3]]
##下拉列线到低电平
set_property PULLDOWN true [get_ports col[0]]
set_property PULLDOWN true [get_ports col[1]]
set_property PULLDOWN true [get_ports col[2]]
set_property PULLDOWN true [get_ports col[3]]
##显示数码管部分约束文件
set_property PACKAGE_PIN G12 [get_ports {dig[0]}]
set_property PACKAGE_PIN H13 [get_ports {dig[1]}]
set_property PACKAGE_PIN N14 [get_ports {dig[2]}]
set_property PACKAGE_PIN N11 [get_ports {dig[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {dig[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {dig[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {dig[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {dig[3]}]
set_property PACKAGE_PIN L13 [get_ports {seg[7]}]
set_property PACKAGE_PIN M14 [get_ports {seg[6]}]
set_property PACKAGE_PIN P13 [get_ports {seg[5]}]
set_property PACKAGE_PIN K12 [get_ports {seg[4]}]
set_property PACKAGE_PIN K13 [get_ports {seg[3]}]
set_property PACKAGE_PIN L14 [get_ports {seg[2]}]
set_property PACKAGE_PIN N12 [get_ports {seg[1]}]
set_property PACKAGE_PIN P11 [get_ports {seg[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {seg[0]}]
#LED部分约束文件
set_property PACKAGE_PIN P9 [get_ports {led[0]}]
set_property PACKAGE_PIN R8 [get_ports {led[1]}]
set_property PACKAGE_PIN R7 [get_ports {led[2]}]
set_property PACKAGE_PIN T5 [get_ports {led[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {led[0]}]
#LED11---LED7部分约束文件
set_property PACKAGE_PIN E3 [get_ports {LEDOUT[4]}]
set_property PACKAGE_PIN H3 [get_ports {LEDOUT[3]}]
set_property PACKAGE_PIN G5 [get_ports {LEDOUT[2]}]
set_property PACKAGE_PIN R1 [get_ports {LEDOUT[1]}]
set_property PACKAGE_PIN T2 [get_ports {LEDOUT[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LEDOUT[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LEDOUT[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LEDOUT[2]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LEDOUT[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {LEDOUT[0]}]
#SW0、SW11的约束文件
set_property PACKAGE_PIN T9 [get_ports {SW0}]
set_property PACKAGE_PIN F3 [get_ports {SW11}]
set_property IOSTANDARD LVCMOS33 [get_ports {SW0}]
set_property IOSTANDARD LVCMOS33 [get_ports {SW11}]
有什么不清楚的地方可以留言，我会定期查看并给恢复的！！！
over !? Thanks!