diff options
| author | Joshua Peek <josh@joshpeek.com> | 2012-07-23 15:52:49 -0500 |
|---|---|---|
| committer | Joshua Peek <josh@joshpeek.com> | 2012-07-23 15:52:49 -0500 |
| commit | 7b6caa0f6c7603aabb5e6ed657e24aaddbeafc78 (patch) | |
| tree | ec0522eae75bb04ae73d28ae3f599682a2bfdaeb /samples/Verilog/t_button_debounce.v | |
| parent | 314f0e485227915931db361be14d308a210bedea (diff) | |
Rename samples subdirectories
Diffstat (limited to 'samples/Verilog/t_button_debounce.v')
| -rwxr-xr-x | samples/Verilog/t_button_debounce.v | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/samples/Verilog/t_button_debounce.v b/samples/Verilog/t_button_debounce.v new file mode 100755 index 0000000..0dfc0c0 --- /dev/null +++ b/samples/Verilog/t_button_debounce.v @@ -0,0 +1,70 @@ +////////////////////////////////////////////////////////////////////////////////
+// Original Author: Schuyler Eldridge
+// Contact Point: Schuyler Eldridge (schuyler.eldridge@gmail.com)
+// button_debounce.v
+// Created: 4.5.2012
+// Modified: 4.5.2012
+//
+// Testbench for button_debounce.v.
+//
+// Copyright (C) 2012 Schuyler Eldridge, Boston University
+//
+// 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.
+//
+// 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/>.
+////////////////////////////////////////////////////////////////////////////////
+`timescale 1ns / 1ps
+module t_button_debounce();
+
+ parameter
+ CLK_FREQUENCY = 66000000,
+ DEBOUNCE_HZ = 2;
+
+ reg clk, reset_n, button;
+ wire debounce;
+
+ button_debounce
+ #(
+ .CLK_FREQUENCY(CLK_FREQUENCY),
+ .DEBOUNCE_HZ(DEBOUNCE_HZ)
+ )
+ button_debounce
+ (
+ .clk(clk),
+ .reset_n(reset_n),
+ .button(button),
+ .debounce(debounce)
+ );
+
+ initial begin
+ clk = 1'bx; reset_n = 1'bx; button = 1'bx;
+ #10 reset_n = 1;
+ #10 reset_n = 0; clk = 0;
+ #10 reset_n = 1;
+ #10 button = 0;
+ end
+
+ always
+ #5 clk = ~clk;
+
+ always begin
+ #100 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ #0.1 button = ~button;
+ end
+
+endmodule
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