LED-Cube/debounce.v at master · ARui-tw/LED-Cube · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
// --------------------------------------------------------------------
// --------------------------------------------------------------------
// Module:debounce
//
// Author: george
//
// Description:
//
//
// --------------------------------------------------------------------
// Code Revision History :
// --------------------------------------------------------------------
// Version: |Mod. Date:   |Changes Made:
// V1.0     |2021/01/11   |Initial ver
// --------------------------------------------------------------------
//////////////////////////////sample code : debounce
module debounce (pb, clk, pb_debounce);
    input pb, clk;
    output pb_debounce;

    reg [3:0] DFF;

    always @(posedge clk) begin
        DFF[3:1] <= DFF[2:0];
        DFF[0] <= pb;
    end

assign pb_debounce = ((DFF == 4'b1111)? 1'b1 : 1'b0);

endmodule