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authorJosh Blum <josh@joshknows.com>2010-01-22 11:46:58 -0800
committerJosh Blum <josh@joshknows.com>2010-01-22 11:46:58 -0800
commita170b9b42345794429486dd4f3316e84ea2cc871 (patch)
tree2483dfa9eb239e3c2cec5701da6f2f5b5940d7ad /usrp1/sdr_lib/strobe_gen.v
parent320c70016f8798cb73c8d02eaa3728df48b5b3ab (diff)
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Moved usrp1 fpga files into usrp1 subdir.
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diff --git a/usrp1/sdr_lib/strobe_gen.v b/usrp1/sdr_lib/strobe_gen.v
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+// -*- verilog -*-
+//
+// USRP - Universal Software Radio Peripheral
+//
+// Copyright (C) 2003 Matt Ettus
+//
+// 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 2 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, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA
+//
+
+
+
+module strobe_gen
+ ( input clock,
+ input reset,
+ input enable,
+ input [7:0] rate, // Rate should be 1 LESS THAN your desired divide ratio
+ input strobe_in,
+ output wire strobe );
+
+// parameter width = 8;
+
+ reg [7:0] counter;
+ assign strobe = ~|counter && enable && strobe_in;
+
+ always @(posedge clock)
+ if(reset | ~enable)
+ counter <= #1 8'd0;
+ else if(strobe_in)
+ if(counter == 0)
+ counter <= #1 rate;
+ else
+ counter <= #1 counter - 8'd1;
+
+endmodule // strobe_gen