[Commit-gnuradio] r7193 - usrp2/trunk/fpga/sdr_lib

[matt]

Author: matt
Date: 2007-12-15 00:43:30 -0700 (Sat, 15 Dec 2007)
New Revision: 7193

Added:
   usrp2/trunk/fpga/sdr_lib/dummy_rx.v
Log:
for debugging the rx ibs


Added: usrp2/trunk/fpga/sdr_lib/dummy_rx.v
===================================================================
--- usrp2/trunk/fpga/sdr_lib/dummy_rx.v                         (rev 0)
+++ usrp2/trunk/fpga/sdr_lib/dummy_rx.v 2007-12-15 07:43:30 UTC (rev 7193)
@@ -0,0 +1,62 @@
+
+`define DSP_CORE_RX_BASE 160
+module dummy_rx
+  (input clk, input rst,
+   input set_stb, input [7:0] set_addr, input [31:0] set_data,
+
+   input [13:0] adc_a, input adc_ovf_a,
+   input [13:0] adc_b, input adc_ovf_b,
+   
+   output [31:0] sample,
+   input run,
+   output strobe
+   );
+
+   wire [15:0] scale_i, scale_q;
+   wire [31:0] phase_inc;
+   reg [31:0]  phase;
+
+   wire [23:0] i_decim, q_decim;
+   wire [7:0]  decim_rate;
+   
+   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+0)) sr_0
+     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
+      .in(set_data),.out(phase_inc),.changed());
+   
+   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+1)) sr_1
+     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
+      .in(set_data),.out({scale_i,scale_q}),.changed());
+   
+   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+2)) sr_2
+     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
+      .in(set_data),.out(decim_rate),.changed());
+   
+   strobe_gen 
strobe_gen(.clock(clk),.reset(rst),.enable(run),.rate(decim_rate),
+                        .strobe_in(1),.strobe(strobe) );
+
+   reg [15:0] i_out, q_out;
+   assign      sample = {i_out,q_out};
+
+   always @(posedge clk)
+     if(rst)
+       i_out <= 0;
+     else if(~run)
+       i_out <= 0;
+     else if(strobe)
+       i_out <= i_out + 1;
+
+   reg                run_d1;
+   always @(posedge clk)
+     if(rst)
+       run_d1 <= 0;
+     else
+       run_d1 <= run;
+
+   always @(posedge clk)
+     if(rst)
+       q_out <= 0;
+     else if (run & ~run_d1)
+       q_out <= q_out + 1;
+       
+   
+endmodule // dsp_core_rx