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127 lines
2.2 KiB
Systemverilog
Executable File
127 lines
2.2 KiB
Systemverilog
Executable File
//------------------------------------------------------------------------------
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// moving_average_tb.sv
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// Konstantin Pavlov, pavlovconst@gmail.com
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//------------------------------------------------------------------------------
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// INFO ------------------------------------------------------------------------
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// testbench for moving_average.sv module
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//
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`timescale 1ns / 1ps
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module moving_average_tb();
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logic clk200;
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initial begin
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#0 clk200 = 1'b0;
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forever
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#2.5 clk200 = ~clk200;
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end
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// external device "asynchronous" clock
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logic clk33;
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initial begin
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#0 clk33 = 1'b0;
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forever
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#15.151 clk33 = ~clk33;
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end
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logic rst;
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initial begin
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#0 rst = 1'b0;
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#10.2 rst = 1'b1;
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#5 rst = 1'b0;
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//#10000;
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forever begin
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#9985 rst = ~rst;
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#5 rst = ~rst;
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end
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end
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logic nrst;
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assign nrst = ~rst;
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logic rst_once;
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initial begin
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#0 rst_once = 1'b0;
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#10.2 rst_once = 1'b1;
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#5 rst_once = 1'b0;
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end
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logic nrst_once;
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assign nrst_once = ~rst_once;
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logic [31:0] DerivedClocks;
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clk_divider #(
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.WIDTH( 32 )
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) cd1 (
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.clk( clk200 ),
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.nrst( nrst_once ),
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.ena( 1'b1 ),
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.out( DerivedClocks[31:0] )
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);
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logic [31:0] E_DerivedClocks;
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edge_detect ed1[31:0] (
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.clk( {32{clk200}} ),
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.nrst( {32{nrst_once}} ),
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.in( DerivedClocks[31:0] ),
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.rising( E_DerivedClocks[31:0] ),
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.falling( ),
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.both( )
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);
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logic [15:0] RandomNumber1;
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c_rand rng1 (
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.clk(clk200),
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.rst(rst_once),
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.reseed(1'b0),
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.seed_val(DerivedClocks[31:0]),
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.out( RandomNumber1[15:0] )
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);
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logic start;
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initial begin
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#0 start = 1'b0;
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#100 start = 1'b1;
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#20 start = 1'b0;
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end
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// Module under test ==========================================================
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logic [15:0] seq_cntr = '0;
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logic [31:0] id = '0;
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always_ff @(posedge clk200) begin
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if( ~nrst_once ) begin
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seq_cntr[15:0] <= '0;
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id[31:0] <= '0;
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end else begin
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// incrementing sequence counter
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if( seq_cntr[15:0]!= '1 ) begin
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seq_cntr[15:0] <= seq_cntr[15:0] + 1'b1;
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end
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if( seq_cntr[15:0]<300 ) begin
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id[31:0] <= '1;
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//id[31:0] <= {4{RandomNumber1[15:0]}};
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end else begin
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id[31:0] <= '0;
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end
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end
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end
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moving_average #(
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.DEPTH( 255 ),
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.DATA_W( 32 )
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) MA (
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.clk( clk200 ),
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.nrst( nrst_once ),
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.ena( 1'b1 ),
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.id( id[31:0] ),
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.od( )
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);
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endmodule
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