基于Vivado和Ego1的密码锁设计

目录
一． 引言 2
二． 实验环境 2
三． 设计原理 2
1.Verilog 基础 2
2.Vivado 软件设计平台 4
3.Ego1 硬件实验平台 4
四． 设计方案 7
1.密码锁端口预设 7
2.密码锁状态分类 9
3.密码锁开锁逻辑 10
4.密码锁修改密码设计 13
5.可视化设计 14
6.管脚约束 17
五． 实验测试与结果分析 19
1.密码锁开锁测试 19
2.修改密码测试 20
3.密码锁超时锁死测试 21
六． 设计总结 22
七． 致谢 22
“密码锁”系统设计报告

移动通信网络实验课程以软硬件结合的方式进行实践教学。完成 FPGA 基础实验后并要求自主设计一个完整的程序，并在硬件平台上实现逻辑功能。本次课程报告的设计以“密码锁”展开，在 Ego1 硬件平台上实现可操作的逻辑。具体将包括到基本的时钟及复位按钮，调节按钮及相应的 LED 灯来改变当前模式，一组
LED 流水灯倒计时设计，七段数码管分段显示及实时修改数字密码并显示当前锁的状态等。
本文转载自http://www.biyezuopin.vip/onews.asp?id=14927实验需要预先学习的知识包括Verilog HDL 语法学习，Vivado 软件使用学习，Ego1 板卡相关端口学习。
通过本次课程的学习，下面将对“密码锁”逻辑程序的具体设计流程展开说明。 具体包括实验环境，设计原理，设计方案，实验测试与结果分析，设计总结几个部分。
二． 实验环境
操 作 系 统 ：Window 10； 设计软件：Vivado 2017.4； 硬件平台：Ego1；
三． 设计原理
1.Verilog 基础
硬件描述语言(HDL)是一种用形式化方法来描述数字电路和设计数字逻辑系统的语言。它可以使数字逻辑电路设计者利用这种语言来描述自己的设计思想，然后利用电子设计自动化(EDA)工具进行仿真，再自动综合到门级电路， 再用 ASIC 或 FPGA 实现其功能。

`timescale 1ns / 1ps

module lock(
input sys_clk,  //总时钟
input rst_n,    //reset重置
//五个按钮：上下左右中
input up_button,  
input down_button,
input left_button,
input right_button,
input middle_button,
input mode,   //SW7开关控制模式
output wire ledlow,     //SW7对应的LED灯
output wire [7:0] ledbit,    //数码管显示位信息
output wire [6:0] ledshow,   //前四位数码管每段信息
output wire [6:0] ledshow2,  //后四位数码管每段信息
output reg [7:0] leddown     //8个小LED灯：流水计时
);

wire [63:0] timer;
wire [63:0] led_timer;
wire [63:0] pwd_cng_timer;
wire [63:0] jmp1;
wire [63:0] jmp2;
wire [63:0] jmp3;
wire [63:0] jmp4;
wire [63:0] jmp5;
wire [63:0] jmp6;
wire [63:0] jmp7;
wire [63:0] jmp8;
wire [63:0] main_timer;
wire [63:0] left_timer;
wire [63:0] right_timer;
wire [63:0] up_timer;
wire [63:0] down_timer;
wire [63:0] middle_timer;

reg lock_status;    //是否为锁住状态
wire load_status;   //是否为修改密码状态
wire read_status;   //是否为检验密码状态
reg succ_status;    //是否成功解锁

reg [7:0] is_jmp;   //当前选中位（实现闪烁）
reg [7:0] choose;   //指针

clock_make U1(
.sys_clk(sys_clk),
.rst_n(rst_n),
.timer(timer),
.led_timer(led_timer),
.load_status(load_status),
.read_status(read_status),
.lock_status(lock_status),
.is_jmp(is_jmp),
.pwd_cng_timer(pwd_cng_timer),
.middle_button(middle_button),
.left_button(left_button),
.right_button(right_button),
.up_button(up_button),
.down_button(down_button),
.jmp1(jmp1),
.jmp2(jmp2),
.jmp3(jmp3),
.jmp4(jmp4),
.jmp5(jmp5),
.jmp6(jmp6),
.jmp7(jmp7),
.jmp8(jmp8),
.main_timer(main_timer),
.left_timer(left_timer),
.right_timer(right_timer),
.up_timer(up_timer),
.down_timer(down_timer),
.middle_timer(middle_timer)
);

reg [7:0] numbit;    //数字显示位信息
reg [3:0] number1;   //前四位数码管数字信息
reg [3:0] number2;   //后四位数码管数字信息

//锁密码字段4位
reg [3:0] pwd1;      
reg [3:0] pwd2;
reg [3:0] pwd3;
reg [3:0] pwd4;

reg [3:0] pwds;      //当前输入密码

reg [3:0] number_1;
reg [3:0] number_2;
reg [3:0] number_3;
reg [3:0] number_4;
reg [3:0] number_5;
reg [3:0] number_6;
reg [3:0] number_7;
reg [3:0] number_8;

digital_put U2(
.sys_clk(sys_clk),
.rst_n(rst_n),
.timer(timer),
.numbit(numbit),
.number1(number1),
.number2(number2),
.ledbit(ledbit),
.ledshow(ledshow),
.ledshow2(ledshow2)
);

assign ledlow = mode;
assign read_status = ~mode;
assign load_status = mode;

initial
begin
    numbit <= 8'b11111111;
    is_jmp <= 8'b00000000;
    number1 <= 4'd0;
    number2 <= 4'd0;
    number_1 <= 4'd0;
    number_2 <= 4'd0;
    number_3 <= 4'd0;
    number_4 <= 4'd0;
    number_5 <= 4'd0;
    number_6 <= 4'd0;
    number_7 <= 4'd0;
    number_8 <= 4'd0;
    pwd1 <= 4'd1;
    pwd2 <= 4'd0;
    pwd3 <= 4'd0;
    pwd4 <= 4'd0;
    pwds <= 4'd0;
    lock_status <= 1'b0;
    succ_status <= 1'b0;
    choose <= 4'b0;
end

always@(posedge sys_clk or negedge rst_n)
begin
    //初始化
    if(~rst_n)
    begin
        leddown <= 8'b11111111;
        lock_status = 1'b0;
    end
    //流水灯计时
    else if(read_status == 1'b1)
    begin
        if(led_timer == 64'd199_999_999) //49_999_999
            begin
                leddown <= 8'b11111110;
            end
            else if(led_timer == 64'd399_999_999)//99_999_999
            begin
                leddown <= 8'b11111100;
            end
            else if(led_timer == 64'd599_999_999)//149_999_999
            begin
                leddown <= 8'b11111000;
            end
            else if(led_timer == 64'd799_999_999)//199_999_999
            begin
                leddown <= 8'b11110000;
            end
            else if(led_timer == 64'd999_999_999)//249_999_999
            begin
                leddown <= 8'b11100000;
            end
            else if(led_timer == 64'd1_199_999_999)//299_999_999
            begin
                leddown <= 8'b11000000;
            end
            else if(led_timer == 64'd1_399_999_999)//349_999_999
            begin
                leddown <= 8'b10000000;
            end
            else if(led_timer == 64'd1_599_999_999)//399_999_999
            begin
                leddown <= 8'b00000000;
            end
            else if(led_timer == 64'd1_799_999_999)//449_999_999
            begin
                leddown <= 8'b11111111;
                lock_status = 1'b1;    //超时锁住
            end
        end
        
        //read_status=0 ,设置密码
        else
        begin
            leddown <= 8'b10101010;
        end
    end

always@(posedge sys_clk)
begin
    //成功解锁 -HCC
    if(succ_status == 1'b1)
    begin
        number_5 <= 4'd14;
        number_6 <= 4'd12;
        number_7 <= 4'd13;
        number_8 <= 4'd13;
    end
    else
    begin
         //未在规定时间内解锁  Fail
        if(lock_status == 1'b1)
        begin
            number_5 <= 4'd15;
            number_6 <= 4'd10;
            number_7 <= 4'd1;
            number_8 <= 4'd11;
        end
        else
        //解锁中 CALL
        begin
            number_5 <= 4'd13;
            number_6 <= 4'd10;
            number_7 <= 4'd11;
            number_8 <= 4'd11;
        end
    end
end

//左右键设置指针指向
always@(posedge sys_clk)
begin
    if(choose == 8'd0)
    begin
        if(right_timer == 64'd9_999_999)
        begin
            choose = 8'd1;
        end
    end
    else if(choose == 8'd1)
    begin
        if(left_timer == 64'd9_999_999)
        begin
            choose = 8'd0;
        end
        else if(right_timer == 64'd9_999_999)
        begin
            choose = 8'd2;
        end
    end
    else if(choose == 8'd2)
    begin
        if(left_timer == 64'd9_999_999)
        begin
            choose = 8'd1;
        end
        else if(right_timer == 64'd9_999_999)
        begin
            choose = 8'd3;
        end
    end
    else if(choose == 8'd3)
    begin
        if(left_timer == 64'd9_999_999)
        begin
            choose = 8'd2;
        end
    end
end

//上下键设置数值
always@(posedge sys_clk or negedge rst_n)
begin
    if(~rst_n)
    begin
        number_1 = 4'd0;
        number_2 = 4'd0;
        number_3 = 4'd0;
        number_4 = 4'd0;
    end
    else
    begin
        if(choose == 4'd0)
        begin
            if(up_timer == 64'd9_999_999)
            begin
                if(number_1 < 4'd9)
                begin
                    number_1 = number_1 + 1'b1;
                end
            end
            if(down_timer == 64'd9_999_999)
            begin
                if(number_1 > 4'd0)
                begin
                    number_1 = number_1 - 1'b1;
                end
            end
        end
        if(choose == 4'd1)
        begin
            if(up_timer == 64'd9_999_999)
            begin
                if(number_2 < 4'd9)
                begin
                    number_2 = number_2 + 1'b1;
                end
            end
            if(down_timer == 64'd9_999_999)
            begin
                if(number_2 > 4'd0)
                begin
                    number_2 = number_2 - 1'b1;
                end
            end
        end
        if(choose == 4'd2)
        begin
            if(up_timer == 64'd9_999_999)
            begin
                if(number_3 < 4'd9)
                begin
                    number_3 = number_3 + 1'b1;
                end
            end
            if(down_timer == 64'd9_999_999)
            begin
                if(number_3 > 4'd0)
                begin
                    number_3 = number_3 - 1'b1;
                end
            end
        end
        if(choose == 4'd3)
        begin
            if(up_timer == 64'd9_999_999)
            begin
                if(number_4 < 4'd9)
                begin
                    number_4 = number_4 + 1'b1;
                end
            end
            if(down_timer == 64'd9_999_999)
            begin
                if(number_4 > 4'd0)
                begin
                    number_4 = number_4 - 1'b1;
                end
            end
        end
    end
end

always@(posedge sys_clk or negedge rst_n)
begin
    if(~rst_n)
    //初始密码设置和初始默输入密码
    begin
        pwd1 <= 4'd2;
        pwd2 <= 4'd0;
        pwd3 <= 4'd2;
        pwd4 <= 4'd0;
        pwds <= 4'b0000;
        succ_status <= 1'b0;
    end
    else
    begin
        if(pwd1 == number_1)
        begin
            pwds[3]=1'b1;
        end
        else
        begin
            pwds[3]=1'b0;
        end
        if(pwd2 == number_2)
        begin
            pwds[2]=1'b1;
        end
        else
        begin
            pwds[2]=1'b0;
        end
        if(pwd3 == number_3)
        begin
            pwds[1]=1'b1;
        end
        else
        begin
            pwds[1]=1'b0;
        end
        if(pwd4 == number_4)
        begin
            pwds[0]=1'b1;
        end
        else
        begin
            pwds[0]=1'b0;
        end
        //未解锁状态下
        if(lock_status == 1'b0)
        begin
            //读取状态 密码正确解锁
            if(read_status == 1'b1)
            begin
                if(middle_timer == 64'd9_999_999)
                begin
                    if(pwds == 4'b1111)
                    begin
                        succ_status <= 1'b1;
                    end
                    else
                    begin
                        succ_status <= 1'b0;
                    end
                end
            end
            //非读取状态
            else
            begin
                if(load_status == 1'b1)
                begin
                    //加载状态下 设置密码---------------------------------------------
                    if(middle_timer == 64'd9_999_999)
                    begin
                        pwd1 <= number_1;
                        pwd2 <= number_2;
                        pwd3 <= number_3;
                        pwd4 <= number_4;
                        
                        succ_status <= 1'b0;
                    end
                end
            end
        end
    end
end

//设置闪烁灯位置
always@(posedge sys_clk)
begin
    if(choose == 8'd0)
    begin
        is_jmp <= 8'b10000000;
    end
    else if(choose == 8'd1)
    begin
        is_jmp <= 8'b01000000;
    end
    else if(choose == 8'd2)
    begin
        is_jmp <= 8'b00100000;
    end
    else if(choose == 8'd3)
    begin
        is_jmp <= 8'b00010000;
    end
end

//闪烁与选中设置
always@(posedge sys_clk or negedge rst_n)
begin
    if(~rst_n)
    begin
        numbit <= 8'b11111111;
        number1 <= 4'd0;
        number2 <= 4'd0;
        //number_1 <= 4'd1;
        //number_2 <= 4'd2;
        //number_3 <= 4'd3;
        //number_4 <= 4'd4;
        //number_5 <= 4'd5;
        //number_6 <= 4'd6;
        //number_7 <= 4'd7;
        //number_8 <= 4'd8;
    end
    else if(timer <= 64'd249999)
    begin
        numbit = 8'b10001000;
        if(is_jmp[7] == 1'b1)
        begin
            if(jmp1 <= 50000000)
            begin
                number1 = number_1;
            end
            else
            begin
                numbit[7] = 1'b0;
            end
        end
        else
        begin
            number1 = number_1;
        end
        if(is_jmp[3] == 1'b1)
        begin
            if(jmp5 <= 50000000)
            begin
                number2 = number_5;
            end
            else
            begin
                numbit[3] = 1'b0;
            end
        end
        else
        begin
            number2 = number_5;
        end
    end
    else if(timer <= 64'd499999)
    begin
        numbit = 8'b01000100;
        if(is_jmp[6] == 1'b1)
        begin
            if(jmp2 <= 50000000)
            begin
                number1 = number_2;
            end
            else
            begin
                numbit[6] = 1'b0;
            end
        end
        else
        begin
            number1 = number_2;
        end
        if(is_jmp[2] == 1'b1)
        begin
            if(jmp6 <= 50000000)
            begin
                number2 = number_6;
            end
            else
            begin
                numbit[2] = 1'b0;
            end
        end
        else
        begin
            number2 = number_6;
        end
    end
    else if(timer <= 64'd749999)
    begin
        numbit = 8'b00100010;
        if(is_jmp[5] == 1'b1)
        begin
            if(jmp3 <= 50000000)
            begin
                number1 = number_3;
            end
            else
            begin
                numbit[5] = 1'b0;
            end
        end
        else
        begin
            number1 = number_3;
        end
        if(is_jmp[1] == 1'b1)
        begin
            if(jmp7 <= 50000000)
            begin
                number2 = number_7;
            end
            else
            begin
                numbit[1] = 1'b0;
            end
        end
        else
        begin
            number2 = number_7;
        end
    end
    else if(timer <= 64'd999999)
    begin
        numbit = 8'b00010001;
        if(is_jmp[4] == 1'b1)
        begin
            if(jmp4 <= 50000000)
            begin
                number1 = number_4;
            end
            else
            begin
                numbit[4] = 1'b0;
            end
        end
        else
        begin
            number1 = number_4;
        end
        if(is_jmp[0] == 1'b1)
        begin
            if(jmp8 <= 50000000)
            begin
                number2 = number_8;
            end
            else
            begin
                numbit[0] = 1'b0;
            end
        end
        else
        begin
            number2 = number_8;
        end
    end
end

endmodule