Merged r9433:9527 from features/gr-usrp2 into trunk. Adds usrp2 and gr-usrp2 top-level components. Trunk passes distcheck with mb-gcc installed, but currently not without them. The key issue is that when mb-gcc is not installed, the build system skips over the usrp2/firmware directory, and the firmware include files don't get put into the dist tarball. But we can't do the usual DIST_SUBDIRS method as the firmware is a subpackage.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9528 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 75 insertions, 0 deletions

diff --git a/usrp2/fpga/sdr_lib/hb/hbd_tb/test_hbd.v b/usrp2/fpga/sdr_lib/hb/hbd_tb/test_hbd.v
new file mode 100644
index 000000000..01ab5e7e0
--- /dev/null
+++ b/usrp2/fpga/sdr_lib/hb/hbd_tb/test_hbd.v
@@ -0,0 +1,75 @@
+
+
+module test_hbd();
+
+   reg clock;
+   initial clock = 1'b0;
+   always #5 clock <= ~clock;
+
+   reg reset;
+   initial reset = 1'b1;
+   initial #1000 reset = 1'b0;
+   
+   initial $dumpfile("test_hbd.vcd");
+   initial $dumpvars(0,test_hbd);
+
+   reg [15:0] i_in, q_in;
+   wire [15:0] i_out, q_out;
+
+   reg 	       strobe_in;
+   wire        strobe_out;
+   reg 	       coeff_write;
+   reg [15:0]  coeff_data;
+   reg [4:0]   coeff_addr;
+   
+   halfband_decim halfband_decim 
+     ( .clock(clock),.reset(reset),.enable(),.strobe_in(strobe_in),.strobe_out(strobe_out),
+       .data_in(i_in),.data_out(i_out) );
+   
+   always @(posedge strobe_out)
+     if(i_out[15])
+       $display("-%d",65536-i_out);
+     else
+       $display("%d",i_out);
+
+   initial
+     begin
+	strobe_in = 1'b0;
+	@(negedge reset);
+	@(posedge clock);
+	while(1)
+	  begin
+	     strobe_in <= #1 1'b1;
+	     @(posedge clock);
+	     strobe_in <= #1 1'b0;
+	     repeat (`RATE)
+	       @(posedge clock);
+	  end
+     end
+
+   initial #10000000 $finish;    // Just in case...
+
+   initial
+     begin
+	i_in <= #1 16'd0;
+	repeat (40) @(posedge strobe_in);
+	i_in <= #1 16'd16384;
+	@(posedge strobe_in);
+	i_in <= #1 16'd0;
+	repeat (40) @(posedge strobe_in);
+	i_in <= #1 16'd16384;
+	@(posedge strobe_in);
+	i_in <= #1 16'd0;
+	repeat (40) @(posedge strobe_in);
+	i_in <= #1 16'd16384;
+	repeat (40) @(posedge strobe_in);
+	i_in <= #1 16'd0;
+	repeat (41) @(posedge strobe_in);
+	i_in <= #1 16'd16384;
+	repeat (40) @(posedge strobe_in);
+	i_in <= #1 16'd0;
+	repeat (40) @(posedge strobe_in);
+	repeat (7) @(posedge clock);
+	$finish;
+     end // initial begin
+endmodule // test_hb