diff options
Diffstat (limited to 'fpga/usrp1/sdr_lib/strobe_gen.v')
-rw-r--r-- | fpga/usrp1/sdr_lib/strobe_gen.v | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fpga/usrp1/sdr_lib/strobe_gen.v b/fpga/usrp1/sdr_lib/strobe_gen.v new file mode 100644 index 000000000..ba1a8ab28 --- /dev/null +++ b/fpga/usrp1/sdr_lib/strobe_gen.v @@ -0,0 +1,46 @@ +// -*- 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 |