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//
// Copyright 2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
module test_hbd();
reg clock;
initial clock = 1'b0;
always #5 clock <= ~clock;
reg reset;
initial reset = 1'b1;
initial #1000 reset = 1'b0;
initial $dumpfile("test_hbd.vcd");
initial $dumpvars(0,test_hbd);
reg [15:0] i_in, q_in;
wire [15:0] i_out, q_out;
reg strobe_in;
wire strobe_out;
reg coeff_write;
reg [15:0] coeff_data;
reg [4:0] coeff_addr;
halfband_decim halfband_decim
( .clock(clock),.reset(reset),.enable(),.strobe_in(strobe_in),.strobe_out(strobe_out),
.data_in(i_in),.data_out(i_out) );
always @(posedge strobe_out)
if(i_out[15])
$display("-%d",65536-i_out);
else
$display("%d",i_out);
initial
begin
strobe_in = 1'b0;
@(negedge reset);
@(posedge clock);
while(1)
begin
strobe_in <= #1 1'b1;
@(posedge clock);
strobe_in <= #1 1'b0;
repeat (`RATE)
@(posedge clock);
end
end
initial #10000000 $finish; // Just in case...
initial
begin
i_in <= #1 16'd0;
repeat (40) @(posedge strobe_in);
i_in <= #1 16'd16384;
@(posedge strobe_in);
i_in <= #1 16'd0;
repeat (40) @(posedge strobe_in);
i_in <= #1 16'd16384;
@(posedge strobe_in);
i_in <= #1 16'd0;
repeat (40) @(posedge strobe_in);
i_in <= #1 16'd16384;
repeat (40) @(posedge strobe_in);
i_in <= #1 16'd0;
repeat (41) @(posedge strobe_in);
i_in <= #1 16'd16384;
repeat (40) @(posedge strobe_in);
i_in <= #1 16'd0;
repeat (40) @(posedge strobe_in);
repeat (7) @(posedge clock);
$finish;
end // initial begin
endmodule // test_hb
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