Squashed B200 FPGA Source. Code from Josh Blum, Ian Buckley, and Matt Ettus.

1 files changed, 165 insertions, 0 deletions

diff --git a/fpga/usrp3/lib/vita/chdr_16sc_to_12sc_tb.v b/fpga/usrp3/lib/vita/chdr_16sc_to_12sc_tb.v
new file mode 100644
index 000000000..e6f81daeb
--- /dev/null
+++ b/fpga/usrp3/lib/vita/chdr_16sc_to_12sc_tb.v
@@ -0,0 +1,165 @@
+//Purpose: to test 8 to 16 converter
+`timescale 1ns/1ps
+
+module chdr_16sc_to_12sc_tb();
+   
+   reg clk = 0;
+   reg reset = 1;
+   //generate clock
+   always #10 clk = ~clk; 
+
+   initial $dumpfile("chdr_16sc_to_12sc_tb.vcd");
+   initial $dumpvars(0,chdr_16sc_to_12sc_tb);
+   
+   //tells when to finish
+   initial
+     begin
+   	#50 reset = 0;
+   	#50000; 
+   	$finish;
+     end
+
+   //setting registers and wire
+   reg [63:0] i_tdata;
+   reg        i_tlast = 0;
+   reg        i_tvalid = 0;
+   wire       i_tready ;
+   reg [7:0]  set_addr;
+   reg [31:0] set_data;
+   reg 	      set_stb;
+   
+
+   wire [63:0] o_tdata;
+   wire        o_tlast;
+   
+   wire	       o_tvalid;
+   reg 	       o_tready;
+
+   chdr_16sc_to_12sc #(.BASE(89))dut
+     (.clk(clk), .reset(reset),
+      .set_data(set_data), .set_stb(set_stb), .set_addr(set_addr),
+      .i_tdata(i_tdata), .i_tlast(i_tlast), .i_tvalid(i_tvalid), .i_tready(i_tready),
+      .o_tdata(o_tdata), .o_tlast(o_tlast), .o_tvalid(o_tvalid), .o_tready(o_tready), .debug());
+   
+   //if you want to feed a bigger input change array sizes here
+
+   reg [63:0]  data[0:7];
+   initial $readmemh("from16_to_x.hex", data);
+
+   //test packet loop
+   task test_packet;
+      input [15:0] len;
+      input [31:0] sid;
+      reg [1:0]    index;
+      
+      begin
+	 index <= 0;
+	 @(posedge clk) ;
+	 //send header 
+   	 i_tdata = {1'b0, 1'b0, 1'b1, 1'b0, 12'h0, len + 16'd16,sid};
+	 i_tvalid <= 1;
+	 i_tlast <= 0;
+	 @(posedge clk);
+	 while (i_tready != 1)
+	   @(posedge clk);
+	 i_tdata <= {64'b0};
+   	 @(posedge clk);
+	 while (i_tready != 1)
+	   @(posedge clk);
+	 
+	 //-1 for last bit accounting
+	repeat (len[15:3] + (len[2]|len[1]|len[0]) - 1)
+	   begin
+	      i_tdata <= {data[index]}; 
+   	      index <= index+1;
+	      //while (i_tready != 1)
+		//@(posedge clk);
+	      @(posedge clk);
+	      while (i_tready != 1)
+		@(posedge clk);
+	      
+	   end
+   	 i_tlast <= 1'b1;
+	 i_tdata <= {data[index]}; 
+
+	 @(posedge clk);
+	 while (i_tready != 1)
+	   @(posedge clk);
+	 
+	 i_tvalid <= 0;
+      end
+   endtask // test_packet
+
+   //test_destination loop
+
+   task test_destination;
+      input enable;
+      input [15:0] dest_home;
+      
+      
+      begin
+         @(posedge clk);
+         
+         set_data <= {enable,dest_home};
+         set_addr <= 89;
+         set_stb <= 1;
+         
+         @(posedge clk);
+         set_stb <= 0;
+      end
+   endtask
+
+
+
+   
+   
+   //main loop	
+   initial
+     begin
+	i_tvalid <= 0;
+	o_tready <= 1;
+	
+	i_tdata <= 0;
+	
+	@(negedge reset);
+	@(posedge clk);
+	@(posedge clk);
+
+//end on line one
+//1
+	test_destination(1,16'hFEED);
+	test_packet(4, 32'hDEAD_BEEF);
+//2
+	test_destination(1,16'hFEED);
+	test_packet(8, 32'hDEAD_BEEF);
+//3
+	test_destination(1,16'hFEED);
+	test_packet(12, 32'hDEAD_BEEF);
+//4
+
+	test_destination(1,16'hFEED);
+	test_packet(16, 32'hDEAD_BEEF);
+//5
+	test_destination(1,16'hFEED);
+	test_packet(20, 32'hDEAD_BEEF);
+//6
+	test_destination(1,16'hFEED);
+	test_packet(24, 32'hDEAD_BEEF);
+
+//end on line two 
+
+//7
+
+	test_destination(1,16'hFEED);
+	test_packet(28, 32'hDEAD_BEEF);
+//8
+	
+	test_destination(1,16'hFEED);
+	test_packet(32, 32'hDEAD_BEEF);
+	
+
+     end
+
+
+
+endmodule