jellyfish-powersupply/gw/test/auto_range_tb.sv

`timescale 1ns/1ps

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

//TB_DEPS: src/auto_range.v

module auto_range_tb;

  reg i_rst;
  reg i_clk;
  reg i_trigger;
  reg signed [15:0] isense;
  wire [2:0] range_sel;

  auto_range auto_range (
    .i_clk(i_clk),
    .i_rst(i_rst),
    .i_trigger(i_trigger),
    .isense(isense),
    .range_sel(range_sel)
  );

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

  initial begin
    i_rst = 1;
    isense = 0;
    i_trigger = 0;
    #10;
    i_rst = 0;
    #10;
    isense = -200;
    i_trigger = 1;
    #10;
    i_trigger = 0;

    #50;
    isense = -1048;
    i_trigger = 1;
    #10;
    i_trigger = 0;

    #50;
    isense = -1048;
    i_trigger = 1;
    #10;
    i_trigger = 0;


    #100;
    $finish;
  end

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

endmodule