jellyfish-powersupply/gw/test/mavg_tb.sv

`timescale 1ns/1ps

// SPDX-FileCopyrightText: 2025 Igor Brkic <igor@hyperglitch.com>
// SPDX-License-Identifier: GPL-3.0-or-later

//TB_DEPS: src/mavg.v

module mavg_tb;

  reg i_clk;
  reg i_rst;
  reg i_trig;
  reg signed [15:0] i_sample;
  wire signed [15:0] o_avg;

  mavg #(.WIDTH(16), .DEPTH(16)) mavg (
    .clk(i_clk),
    .rst(i_rst),
    .trig(i_trig),
    .in_sample(i_sample),
    .out_avg(o_avg)
  );

  // generate a clock
  initial begin
    i_clk = 0;
    forever #5 i_clk = ~i_clk; // 10ns clock period, 100MHz
  end

  initial begin
    i_rst = 1;
    i_sample = 0;
    #10;
    i_rst = 0;
    #10;

    for (int i = 0; i < 16; i = i + 1) begin
      i_sample = $random;
      i_trig = 1;
      #30;
      i_trig = 0;
      #10;
    end
    for (int i = 0; i < 20; i = i + 1) begin
      i_sample = 8;
      i_trig = 1;
      #10;
      i_trig = 0;
      #10;
    end

    $finish;
  end

  initial begin
    $dumpfile("build/mavg_tb.vcd");
    $dumpvars(0, mavg_tb);
  end

endmodule