Lab4_DD

`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 20.04.2020 23:30:17
// Design Name:
// Module Name: Lab_4
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module convertNumToDigit
(
    input logic [4:0] num,
    output logic [7:0] digit
    );
  always_comb
    begin
        case(num)
        //012345
        4'b0000: begin digit=8'b11111100;end
        //12
        4'b0001: begin digit=8'b01100000;end
        //01346
        4'b0010: begin digit=8'b11011010;end
        //01236
        4'b0011: begin digit=8'b11110010;end
        //1256
        4'b0100: begin digit=8'b01100110;end
        //02356
        4'b0101: begin digit=8'b10110110;end
        //023456
        4'b0110: begin digit=8'b10111110;end
        //012
        4'b0111: begin digit=8'b11100000;end
        //0123456
        4'b1000: begin digit=8'b11111110;end
    endcase
    end
endmodule

module Lab_4(
    input reset,
    input clk12,
    input prm,
    output logic [7:0] digit1,
    output logic [7:0] digit10,
    output logic [7:0] digit100,
    output logic [7:0] digit1000
    );
    logic [4:0] decSec;
    logic [4:0] unSec;
    logic [4:0] decMin;
    logic [4:0] unMin;

    assign decSec = 0;
    assign unSec = 0;
    assign decMin = 0;
    assign unMin = 0;

    logic [5:0] countTick;

    assign  countTick = 0;

    always_comb
        begin
            digit1 = convertNumToDigit(unSec);
            digit10 = convertNumToDigit(decSec);
            digit100 = convertNumToDigit(unMin);
            digit1000 = convertNumToDigit(decMin);
        end

    always @(posedge clk12, posedge prm, posedge reset)
        begin
            if(reset)
                begin
                   decSec = 0;
                   unSec = 0;
                   decMin = 0;
                   unMin = 0;
                   digit1 = convertNumToDigit(unSec);
                   digit10 = convertNumToDigit(decSec);
                   digit100 = convertNumToDigit(unMin);
                   digit1000 = convertNumToDigit(decMin);
                end
             else
                begin
                    if (prm)
                        begin
                            if(clk12)
                                begin
                                    countTick = countTick + 6'b000001;
                                    if(countTick > 6'b010011)
                                        begin
                                            countTick = 0;
                                            unSec = unSec + 5'b00001;

                                            if(unSec > 5b'01001) begin decSec = decSec + 5'b00001; unSec = 0; end;
                                            if(decSec > 5b'00101) begin unMin = unMin + 5'b00001; decSec = 0; end;
                                            if(unMin > 5b'01001) begin decMin = decMin + 5'b00001; unMin = 0; end;
                                            if(decMin > 5b'00101) begin decMin = 0; end;

                                            digit1 = convertNumToDigit(unSec);
                                            digit10 = convertNumToDigit(decSec);
                                            digit100 = convertNumToDigit(unMin);
                                            digit1000 = convertNumToDigit(decMin);
                                        end
                                end
                        end
                end
        end
endmodule