set_main.v

`timescale 1ns / 1ps

// the main entry point
module set_main(clk,
                setting_en,
                enter_btn,
                input_val,
                seg_en,
                seg_out,
                // speaker,
                // alarm_light,
                // output_light,
                is_set_over,    //in-state varible
                num_people,
                count_seconds,
                corrcet_point,
                mistake_point);
    // input and output
    input clk,setting_en,enter_btn;//ori switch
    input [5:0] input_val;//input the number to save as reg
    output [7:0] seg_en, seg_out;
    // output speaker;
    // output [5:0] output_light;//output the input val via corr switch light
    // output reg alarm_light;
    output reg is_set_over;
    output reg [5:0] num_people,count_seconds,corrcet_point,mistake_point;
    reg display_enable;
    //
    reg [2:0] cur_set = 0;//0:without setting,1-set the number,2-set the countdown,3-set the add points,4-set the minus points
    
    //display module
    setting_tube display(clk,display_enable,input_val,seg_out,seg_en);
    
    // state machine
    always @ (posedge clk) begin
        if (setting_en == 0 && is_set_over != 1) begin
            //disable mode
            is_set_over <= 1;
            display_enable <= 0;
        end
        else if (setting_en == 1)begin
            if (cur_set == 4) begin
                //set over
                is_set_over <= 1;
                display_enable <= 0;
            end
            else begin
                //setting
                //display the input_val
                is_set_over <= 0;
                display_enable <= 1;
            end
        end
    end
    
    always @ (posedge enter_btn) begin
        if (is_set_over==0 || setting_en == 1) begin
            if (cur_set == 0) begin
                num_people = input_val;
                if (num_people>4 || num_people<2) begin
                    cur_set = 0;
                    end else begin
                    cur_set = cur_set + 1;
                end
                end else if (cur_set == 1) begin
                count_seconds = input_val;
                if (count_seconds<1) begin
                    cur_set = 1;
                    end else begin
                    cur_set = cur_set + 1;
                end
                end else if (cur_set == 2) begin
                corrcet_point = input_val;
                if (corrcet_point<1) begin
                    cur_set = 2;
                    end else begin
                    cur_set = cur_set + 1;
                end
                end else if (cur_set == 3) begin
                mistake_point = input_val;
                if (mistake_point<1) begin
                    cur_set = 3;
                    end else begin
                    cur_set = cur_set + 1;
                end
                end else if (cur_set == 4) begin
                is_set_over <= 1;
            end
        end
    end
    
    /*
     //output state light，可忽略
     always @ (posedge clk) begin
     case (cur_set)
     0: begin clk_en = 1; sw_en = 0; al_en = 0; cd_en = 0; end
     1: begin clk_en = 0; sw_en = 1; al_en = 0; cd_en = 0; end
     2: begin clk_en = 0; sw_en = 0; al_en = 1; cd_en = 0; end
     3: begin clk_en = 0; sw_en = 0; al_en = 0; cd_en = 1; end
     endcase
     end
     */
    
    
endmodule