diff options
Diffstat (limited to 'gr-radar-mono/src/fpga/lib/cordic_nco.v')
| -rw-r--r-- | gr-radar-mono/src/fpga/lib/cordic_nco.v | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/gr-radar-mono/src/fpga/lib/cordic_nco.v b/gr-radar-mono/src/fpga/lib/cordic_nco.v deleted file mode 100644 index b9858baf81..0000000000 --- a/gr-radar-mono/src/fpga/lib/cordic_nco.v +++ /dev/null @@ -1,54 +0,0 @@ -// -*- verilog -*- -// -// USRP - Universal Software Radio Peripheral -// -// Copyright (C) 2007 Corgan Enterprises 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 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 cordic_nco(clk_i,rst_i,ena_i,strobe_i,ampl_i,freq_i,phs_i,data_i_o,data_q_o); - input clk_i; - input rst_i; - input ena_i; - input strobe_i; - - input [15:0] ampl_i; - input [31:0] freq_i; - input [31:0] phs_i; - - output [15:0] data_i_o; - output [15:0] data_q_o; - - reg [31:0] phase_reg; - wire [31:0] phase = phase_reg + phs_i; - wire [15:0] ampl; - - always @(posedge clk_i) - begin - if (rst_i | ~ena_i) - phase_reg <= 32'b0; - else if (strobe_i) - phase_reg <= phase_reg + freq_i; - end - - assign ampl = ena_i ? ampl_i : 16'b0; - - cordic tx_cordic - (.clock(clk_i),.reset(rst_i),.enable(strobe_i), - .xi(ampl),.yi(16'b0),.zi(phase[31:16]), - .xo(data_i_o),.yo(data_q_o),.zo()); - -endmodule // cordic_nco |