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nhasbun/debouncer.v

Created November 1, 2017 08:18
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  1. nhasbun created this gist Nov 1, 2017.
    42 changes: 42 additions & 0 deletions debouncer.v
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    Original file line number Diff line number Diff line change
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    /**
    Descripcion,
    Modulo debouncer generico
    -----------------------------------------------------------------------------
    Author : Nicolas Hasbun
    File : debouncer.v
    Create : 2017-11-01 05:16:35
    Editor : sublime text3, tab size (2)
    -----------------------------------------------------------------------------
    */

    module debouncer(
    input clock50,
    input signal_in,
    output reg signal_out
    );

    initial signal_out = 0;

    parameter VALORMAX = 32'd100_000;
    integer contador; initial contador = 0;

    always @(posedge clock50) begin
    if (contador > VALORMAX)
    contador <= 0;
    else
    contador <= contador + 1'b1;
    end

    // SYNC CHAIN, signal_in senal async
    reg signal_in_1; initial signal_in_1 = 0;
    reg signal_in_2; initial signal_in_2 = 0;
    always @(posedge clock50) signal_in_1 <= signal_in;
    always @(posedge clock50) signal_in_2 <= signal_in_1;

    always @(posedge clock50) begin
    if(contador == 0)
    signal_out <= signal_in_2;
    end

    endmodule