From 05d77f772317de5d925301aa11bb9a880656dd05 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Thu, 15 Apr 2010 11:24:24 -0700 Subject: moved usrp1 and usrp2 fpga dirs into fpga subdirectory --- fpga/usrp1/sdr_lib/gen_sync.v | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 fpga/usrp1/sdr_lib/gen_sync.v (limited to 'fpga/usrp1/sdr_lib/gen_sync.v') diff --git a/fpga/usrp1/sdr_lib/gen_sync.v b/fpga/usrp1/sdr_lib/gen_sync.v new file mode 100644 index 000000000..d6efdba98 --- /dev/null +++ b/fpga/usrp1/sdr_lib/gen_sync.v @@ -0,0 +1,43 @@ +// -*- 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 gen_sync + ( input clock, + input reset, + input enable, + input [7:0] rate, + output wire sync ); + +// parameter width = 8; + + reg [7:0] counter; + assign sync = |(((rate+1)>>1)& counter); + + always @(posedge clock) + if(reset || ~enable) + counter <= #1 0; + else if(counter == rate) + counter <= #1 0; + else + counter <= #1 counter + 8'd1; + +endmodule // gen_sync + -- cgit v1.2.3