[Commit-gnuradio] r5847 - gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib

[thottelt]

Author: thottelt
Date: 2007-06-26 15:42:55 -0600 (Tue, 26 Jun 2007)
New Revision: 5847

Added:
   
gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib/cmd_reader.v
Log:
forgot cmd_reader.v

Added: 
gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib/cmd_reader.v
===================================================================
--- 
gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib/cmd_reader.v  
                            (rev 0)
+++ 
gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib/cmd_reader.v  
    2007-06-26 21:42:55 UTC (rev 5847)
@@ -0,0 +1,71 @@
+module cmd_reader(
+               //System
+               input reset,
+               input txclk,
+               input [31:0] adc_time,
+               //FX2 Side
+               output reg skip,
+               output reg rdreq,
+               input [31:0] fifodata,
+               input pkt_waiting,
+               //Rx side
+               output reg [15:0] rx_databus,
+               output reg rx_WR                
+       );
+       
+       parameter IDLE = 3'd0;  
+       parameter WAIT = 3'd1;  
+       parameter HEADER = 3'd2;        
+       parameter TIMESTAMP = 3'd3;     
+       parameter TEST = 3'd4;  
+       
+       reg [2:0] state;
+       reg done;
+       
+       always @(posedge txclk)
+               if (reset)
+                 begin
+                   state <= IDLE;
+                       skip <= 0;
+                       rdreq <= 0;
+                       rx_WR <= 0;
+                       done <= 0;
+                 end
+               else case (state)
+                       IDLE : begin
+                               //rx_WR <= 0;
+                               if (pkt_waiting)
+                                 begin
+                                       state <= WAIT;
+                                       rdreq <= 1;
+                                 end
+                       end
+                       
+                       WAIT : state <= HEADER;
+                       
+                       HEADER : begin
+                               state <= TIMESTAMP;
+                               rdreq <= 0;
+                       end
+                       
+                       TIMESTAMP : begin
+                               state <= TEST;
+                               skip <= 1;
+                       end
+                       
+                       TEST : begin
+                               skip <= 0;
+                               done <= ~done;
+                               rx_WR <= 1;
+                               rx_databus <= (done ? 16'hFEED : 16'hBEEF);
+                               
+                               if (done)
+                                       state <= IDLE;
+                       end
+
+                       default : begin
+                               state <= IDLE;
+                               $display("tx_cmd: Unknown state");
+                       end
+               endcase
+endmodule
\ No newline at end of file


Property changes on: 
gnuradio/branches/developers/thottelt/inband/usrp/fpga/inband_lib/cmd_reader.v
___________________________________________________________________
Name: svn:executable
   + *